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- Block Diagram
- Circuit Diagrams
  - Main Pwb Circuit Diagram (1/3)
  - Main Pwb Circuit Diagram (2/3)
  - Main Pwb Circuit Diagram (3/3)
  - Av Selector Pwb Circut Diagram
  - Pip Pwb Circuit Diagram
  - Crt Socket Pwb Circuit Diagram
  - Front Control and Front Av Input Pwb Circuit Diagrams
- Pattern Diagrams
  - Main Pwb Pattern
  - Av Selector Pwb Pattern
  - Crt Socket Pwb Pattern
  - Pip Pwb Pattern
  - Front Control and Front Av Input Pwb Patterns
- Channel Chart (Us)
- Channel Chart (Ca)
  - Block Diagram
  - Circuit Diagrams
    
    Main Pwb Circuit Diagram
    
    Pip Pwb Circuit Diagram
    
    Crt Socket Pwb Circuit Diagram
    
    Lf Pwb Circuit Diagram
  - Pattern Diagrams
    
    Main Pwb Pattern
    
    Av Selector Pwb Pattern
    
    Crt Socket and Pip Pwb Patterns
    
    Front Control, Front Av Input and Lf Pwb Patterns
  - Channel Chart (Us/Ca)
    
    Parts List
    
    Exploded View Parts List
    
    Crt Socket Pw Board Ass'y
    
    Front Av Input Pw Board Ass'y
    
    Front Control Pw Board Ass'y
    
    Av Selector Pw Board Ass'y
    
    Lf Pw Board Ass'y
    
    Pip Pw Board Ass'y
  - Remote Control Unit Parts List (Rm-C301G-2A)
  - Rand Av-27D502 /S
    
    Important Safety Precautions
    
    Important Safeguards
  - Quick Setup
  - Basic Operation
  - Cable and VCR Connections
  - Connecting to a DVD Player
  - Connecting to an External Amplifier
  - Connecting to a Camcorder
  - Connecting to JVC AV Compu Link
  - Remote Control
    
    Remote Control Basics
    
    Changing the Batteries
  - Remote Programming
  - VCR Codes
  - DVD Codes
  - Onscreen Menus
  - Using the Guide
  - The Onscreen Menus
  - Plug in Menu
    
    I N T Ro D U C T I O
    
    L a N G U a G
    
    Auto Tuner Setup
    
    Auto Clock Set
    
    Manual Clock Set
    
    F I N I S
  - Channel Summary
  - V- C H I
    
    Directions to Set Us V-Chip Ratings
    
    Setting Us V-Chip Ratings
    
    Setting Ratings with the V-Chip Button
    
    Movie Ratings
    
    Unrated Programs
    
    Set Lock Code
  - Picture Settings
    
    Tint
    
    Color
    
    P I C T U
    
    Bright
    
    Detail
    
    Noise Muting
    
    Set Video Status
  - Sound Settings
    
    Bass
    
    Treble
    
    Balance
  - General Items
    
    On/Off Timer
    
    TV Speaker
    
    V2 Component-In
    
    Closed Caption
  - Button Functions
  - M E N
  - Exit and PIP off
  - Display
  - Video Status
  - Sleep Timer
  - Hyper Surround
  - Muting
  - R E T U
  - I N P U
  - VCR Buttons
  - DVD Buttons
  - TV/CATV Switch
  - VCR/DVD Switch
  - L I G H
    
    O N / M O V
    
    S W a
    
    Channel
    
    S O U Rc
  - Troubleshooting
  - Warranty
  - Authorized Service Centers
  - Search Codes
  - S P E C I F I C a T I O N
  - Safety Precautions
  - Features
  - Main Difference List
  - How to Identify Models
  - Functions
  - Specific Service Instructions
  - Service Adjustments
  - Parts List
  - Exploded View
  - Printed Wiring Board Parts List
    
    Main Pw Board Ass'y
    
    Crt Socket Pw Board Ass'y
    
    Front Control Pw Board Ass'y
    
    Front Av Input Pw Board Ass'y
    
    Pip Pw Board Ass'y
    
    Av Selector Pw Board Ass'y
  - Remote Control Unit Parts List(Rm-C301G-2A)
  - Difference Parts List between Av-27D502

Quick Links

SERVICE MANUAL

CONTENTS

SPECIFICATIONS ....................................................................................................................................2

SAFETY PRECAUTIONS ........................................................................................................................3

FEATURES ..............................................................................................................................................5

MAIN DIFFERENCE LIST ........................................................................................................................6

HOW TO IDENTIFY MODELS ..................................................................................................................6

FUNCTIONS .............................................................................................................................................7

SPECIFIC SERVICE INSTRUCTIONS ....................................................................................................8

SERVICE ADJUSTMENTS ....................................................................................................................12

STANDARD CIRCUIT DIAGRAM (APPENDIX) .................................................................................. 2-1

PARTS LIST ...........................................................................................................................................31

COLOR TELEVISION

AV-27D502

BASIC CHASSIS

AV-27D502

No. 51797

Mar. 2001

Chapters

Table of Contents

Summary of Contents for JVC AV-27D502/R

Page 1: Table Of Contents
AV-27D502 SERVICE MANUAL COLOR TELEVISION BASIC CHASSIS AV-27D502 AV-27D502 CONTENTS SPECIFICATIONS ............................2 SAFETY PRECAUTIONS ........................3 FEATURES ..............................5 MAIN DIFFERENCE LIST ........................6 HOW TO IDENTIFY MODELS ........................6 FUNCTIONS .............................7 SPECIFIC SERVICE INSTRUCTIONS ....................8 SERVICE ADJUSTMENTS ........................12 ¤ STANDARD CIRCUIT DIAGRAM (APPENDIX) .................. 2-1 PARTS LIST ............................31 No.
Page 2: Specifications
AV-27D502 SPECIFICATIONS Items Contents Dimensions (W × H × D) 29-5/8” × 23-1/4” × 19-1/2” / 75.2cm × 59.1cm × 49.4cm ················································································································································································································ Mass 71.3 Ibs/32.4kg ················································································································································································································ TV RF System CCIR(M) ················································································································································································································ Color Sound System NTSC, BTSC System (Multi Channel Sound) ················································································································································································································...
Page 3: Safety Precautions
AV-27D502 SAFETY PRECAUTIONS 1. The design of this product contains special hardware, many circuits 10. Isolation Check and components specially for safety purposes. For continued pro- (Safety for Electrical Shock Hazard) tection, no changes should be made to the original design unless After re-assembling the product, always perform an isolation check authorized in writing by the manufacturer.
Page 4 AV-27D502 REPLACEMENT OF CHIP COMPONENT CAUTIONS 1. Avoid heating for more than 3 seconds. 2. Do not rub the electrodes and the resist parts of the pattern. 3. When removing a chip part, melt the solder adequately. 4. Do not reuse a chip part after removing it. SOLDERING IRON 1.
Page 5: Features
AV-27D502 FEATURES • • Full-square CRT (cathode ray tube) reproduces fine textured pic- Component input terminal for talking best advantage of Component ture in every detail. Video Signal. • • Audio Video input terminal. (S-input ×2, V-input ×2) C bus control utilizes single chip ICs. •...
Page 6: Main Difference List
AV-27D502 MAIN DIFFERENCE LIST Model AV-27D502 AV-27D502 Part name MAIN PWB SAC-1507A-M2 SAC-1506A-M2 CRT SOCKET PWB SAC-3507A-M2 SAC-3506A-M2 PICTURE TUBE A68ADT25X01 A68QDN891X001 HOW TO IDENTIFY MODELS The difference between AV-27D502 and AV-27D502 is in the PICTURE TUBE. As the result of the difference in PICTURE TUBE, the MAIN PWB also differ. Model AV-27D502 AV-27D502...
Page 7: Functions
AV-27D502 FUNCTIONS FRONT PANEL MENU CHANNEL VOLUME POWER ON TIMER OPERATE MENU CHANNEL POWER VOLUME REMOTE CONTROL UNIT FRONT PANEL DOOR OPENED (RM-C301G-2A) INPUT3 TV CATV POWER VIDEO L/MONO-AUDIO-R CHANNEL ON/MOVE INPUT3 VIDEO/AUDIO TERMINAL SOURCE FREEZE SWAP INPUT VIDEO STATUS REAR PANEL DISPLAY 100+...
Page 8: Specific Service Instructions
AV-27D502 SPECIFIC SERVICE INSTRUCTIONS DISASSEMBLY PROCEDURE REMOVING THE REAR COVER REMOVING THE SPEAKER • 1. Unplug the power supply cord. After removing the rear cover. 2. Remove the 12 screws marked A as shown in Fig.1. 1. Remove the 4 screws marked K as shown in Fig.1. 3.
Page 9 AV-27D502 PICTURE TUBE FRONT CABINET SPEAKER K (x4) CRT SOCKET PWB FRONT AV INPUT PWB AV SELECTOR PWB J (x2) PIP PWB CLAW (x3) CHASSIS BASE CLAW K (x4) FRONT CONTROL MAIN PWB STOPPER SPEAKER LF PWB REAR COVER (x4) STOPPER (x12) Fig.1...
Page 10 AV-27D502 MEMORY IC REPLACEMENT 1. Memory IC This model use a memory IC. This memory IC stores data for proper operation of the video and deflection circuits. When replacing, be sure to use an IC containing this (initial value) data. 2.
Page 11 AV-27D502 TABLE 1 (System Constant setting) Setting item Setting content Setting value AV-27F802 AV-32F802 AV-36F802 AV-27F702 AV-32F702 AV-36D502 AV-32D502 AV-27D502 AV-36F702 MODEL AV-27D502 AV-32D302 AV-36D302 AV-32D202 AV-36D202 AV-36230 AV-32230 AV-36260 AV-32260 AV-27260 PURITY V-CHIP CAN V-CHIP TABLE 2 (User setting value) Setting item Setting value 1.
Page 12: Service Adjustments
AV-27D502 SERVICE ADJUSTMENTS ADJUSTMENT PREPARATION: 1. You can make the necessary adjustments for this unit with either the remote control unit or with the adjustment equipment and parts as given below. 2. Adjustment with the remote control unit is made on the basis of the initial setting values, however, the new setting values which set the screen to its optimum condition may differ from the initial settings.
Page 13 AV-27D502 ADJUSTMENT LOCATIONS FRONT CONTROL PWB FRONT AV INPUT PWB POWER MENU FRONT FRONT LINE FILTER MAIN PWB CN006 FRONT CN007 FRONT IC702 IC701 CPU CN004 F901 Q511 125V 5A Heatsink R507 J601 CN005 TU001 TU001 UPPER : FOCUS AV SELECTOR PWB LOWER : SCREEN FRONT CRT SOCKET PWB...
Page 14 AV-27D502 BASIC OPERATION OF SERVICE MENU 1. TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 2. SERVICE MENU ITEMS In general, basic setting (adjustments) items or verifications are performed in the SERVICE MENU. • PICTURE .......
Page 15 AV-27D502 SERVICE MENU (MAIN MENU) SCREEN PICTURE MODE SERVICE MENU PICTURE SOUND THEATER OTHERS LOW LIGHT HIGH LIGHT RF AFC1 RF AFC2 VCO(CW) I2C BUS CTRL SELECT SELECT 1. BRIGHT 99999999 OPERATE BY EXIT BY EXIT BY STATUS HIGH LIGHT MODE SOUND MODE OTHERS MODE HIGH LIGHT...
Page 16 AV-27D502 (4) Setting method SETTING ITEM 1) UP / DOWN key of the MENU Select the SETTING ITEM. 2) LEFT / RIGHT key of the MENU Setting (adjust) the SETTING VALUE of the SETTING ITEM. When the key is released the SETTING VALUE will be stored (memorized). 3) EXIT key Returns to the previous screen.
Page 17 AV-27D502 INITIAL SETTING VALUE OF SERVICE MENU 1. Adjustment of the SERVICE MENU is made on the basis of the initial setting values; however, the new setting values which set the screen in its optimum condition may differ from the initial setting. 2.
Page 18 AV-27D502 Setting (Adjustment) item Variable range Initial setting value R Y GAIN 000 / 001 CMP R Y GA 000 / 001 G Y PHASE 000 / 001 CMP G Y PH 000 / 001 CD MATRIX 000 — 003 CMP CD MAT 000 —...
Page 19 AV-27D502 Setting (Adjustment) item Variable range Initial setting value H EHT 000 — 007 BTM PIN 000 — 031 V BLK LOW 000 — 003 V BLK UP 000 — 003 CAPTION IN 000 / 001 H BLK 000 / 001 SCREEN 000 / 001 ACB SW...
Page 20 AV-27D502 • SOUND MODE Setting (Adjustment) item Variable range Initial setting value NOISE DET. 000 / 001 IN LEVEL 000 — 063 FH MONITOR 000 / 001 STEREO VCO 000 — 063 PILOT CAN. 000 / 001 FILTER 000 — 063 LOW SEP.
Page 21 AV-27D502 • OTHERS MODE Setting (Adjustment) item Variable range Initial setting value OSD POS. 000 — 007 CCD POS. 000 — 015 EOSEL 000 / 001 MENU COLOR 000 — –030 –010 MENU PICT. 000 — –030 –010 MENU BRI. 000 —...
Page 22 AV-27D502 • LOW LIGHT MODE Setting (Adjustment) item Variable range Initial setting value R CUTOFF 0 — 255 G CUTOFF 0 — 255 B CUTOFF 0 — 255 • HIGH LIGHT MODE Setting (Adjustment) item Variable range Initial setting value R DRIVE 0 —...
Page 23 AV-27D502 ADJUSTMENTS B1 POWER SUPPLY Measuring Item Test point Adjustment part Description instrument Check of DC Voltmeter R507 C504 1. Receive a black-and-white signal. side (B1) 2. Connect the DC Voltmeter to R507 C504 side (B1) and Q511 heatsink B1 POWER SUPPLY Q511 3.
Page 24 AV-27D502 ADJUSTMENT OF WHITE BALANCE Measuring Item Test point Adjustment part Description instrument WHITE Signal No.1 BRIGHT Note : BALANCE generator Set VIDEO STATUS to “STANDARD”. (Low Light) R CUTOFF Adjustment G CUTOFF 1. Receive a black-and-white signal.(Color off) B CUTOFF 2.
Page 25 AV-27D502 Measuring Item Test point Adjustment part Description instrument No.8 P R DR Notes: Signal HIGH LIGHT generator No.10 P B DR • Proceed to the following this adjustment after having completed the adjustments of LOW LIGHT WHITE BALANCE and HIGH LIGHT WHITE WHITE BALANCE for the main picture.
Page 26 AV-27D502 ADJUSTMENT OF DEFLECTION Measuring Item Test point Adjustment part Description instrument V CENTER and Signal No.68 V CENTER Note: generator No.78 TRAPEZ Proceed to the following this adjustment after having completed the TRAPEZIUM Adjustment adjustments of SUB BRIGHT and SUB CONTRAST. 1.
Page 27 AV-27D502 ADJUSTMENT OF CHROMA Measuring Item Test point Adjustment part Description instrument SUB COLOR Signal TP-B No.3 COLOR Notes: • Proceed to the following this adjustment after having completed the adjustment generator TP-E( Oscilloscope [CRT SOCKET adjustment of CONTRAST. Remote PWB] •...
Page 28 AV-27D502 ADJUSTMENT OF MTS CIRCUIT Measuring Item Test point Adjustment part Description instrument No.2 IN LEVEL 1. Select the No.2 IN LEVEL of the SOUND MODE. MTS INPUT LEVEL 2. Verify that the No.2 IN LEVEL is set at its initial setting value. check Signal [MPX]...
Page 29 AV-27D502 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT 1. HIGH VOLTAGE HOLD DOWN CIRCUIT After repairing the high voltage hold down circuit shown in Fig. 1. This circuit shall be checked to operate correctly. 2. CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT (1) Turn the POWER SW ON.
Page 30 AV-27D502 SELF CHECK FUNCTIONS 1. Outline This model has self check functions given below. When a malfunction has been detected, the POWER is turned off and the LED flashes to inform of the failure . The malfunction is detected by the signal input state of the control line connected to the microcomputer. 2.
Page 31 JVC SERVICE & ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP. Head office : 1700 Valley Road, Wayne, New Jersey 07470 (973)315-5000 East Coast : 10 New Maple Avenue, Pine Brook, New Jersey 07058 (973)396-1000 Midwest 705 Enterprise St. Aurora, Illinois 60504...
Page 33: Standard Circuit Diagram
AV-27D502 AV-27D502 AV-27D502 STANDARD CIRCUIT DIAGRAM q NOTE ON USING CIRCUIT DIAGRAMS • 1. SAFETY Type No indication : Ceramic capacitor The components identified by the symbol and shading are : Mylar capacitor critical for safety. For continued safety replace safety critical : Metalized mylar capacitor components only with manufactures recommended parts.
Page 34 AV-27D502 CONTENTS SEMICONDUCTOR SHAPES ..........................2-2 BLOCK DIAGRAM ..............................2-3 CIRCUIT DIAGRAMS ..............................2-5 MAIN PWB CIRCUIT DIAGRAM (1/3) ........................2-5 MAIN PWB CIRCUIT DIAGRAM (2/3) ........................2-7 MAIN PWB CIRCUIT DIAGRAM (3/3) ........................2-9 AV SELECTOR PWB CIRCUT DIAGRAM ......................
Page 35: Block Diagram
AV-27D502 AV-27D502 BLOCK DIAGRAM MAIN PWB CRT SOCKET PWB R, G, B TU001 TUNER R, G, B CF021 SCL0 SCL0 4.5MHz SDA0 SDA0 VIDEO/Y TRAP J601 COM_Y RGB DRIVE IC101 COMPONENT COM_CB CF041 COM_CR VIDEO-IN 4.5MHz BPF 1 CHIP DECODER VC_R VIDEO/Y VC_G...
Page 36: Circuit Diagrams
AV-27D502 AV-27D502 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/3) MAIN PWB ASS'Y SGC-1002A-M2 (AV-27D502 SGC-1001A-M2 (AV-27D502 J601 QNN0349-002 R610 R140 5.6k R237 C601 D606 ∗4 3.9k Q131 Q233 C136 C131 R601 ∗1 R136 C135 ∗1 LC601 47/25 R231 C233 8.8V 10/16 D605 IC101...
Page 37: Main Pwb Circuit Diagram (2/3)
AV-27D502 AV-27D502 MAIN PWB CIRCUIT DIAGRAM (2/3) J810 QNS0001-001 COMPULINK MAIN PWB ASS`Y COMPULIN CN00C SGC-1002A-M2 (AV-27D502 R827 R769 6.8k SGC-1001A-M2 (AV-27D502 3.0V 3.6V Q701 D810 ∗2 2.4V MTZJ5.6B-T2 R740 R772 IC621 LA4485 AUDIO AMP K941 QQR0621-002Z CONTROL CONTROL R737 CN0SS 2.2k 5.0V...
Page 38: Main Pwb Circuit Diagram (3/3)
AV-27D502 AV-27D502 MAIN PWB CIRCUIT DIAGRAM (3/3) CN0PW QMPD200-200-JC POWER CORD AC120V 60Hz CN0PW R998 2.7M QRZ9041-275 F901 QMF51U1-5R0-J8 VA901 FC901 ERZV10V621CS IC421 IC421 IC421 LA7841 CEMG002-001Z V.OUT ! C997 AC125V QCZ9052-102 R999 D423 55Vp-p(v) 32Vp-p(v) C901 THERMAL PROTECTION QFZ9067-104 (120 1/2W) D958 R431...
Page 39: Av Selector Pwb Circut Diagram
AV-27D502 AV-27D502 AV SELECTOR PWB CIRCUIT DIAGRAM R558 Y551 IN1/OTH PiP Video SW(IC502) BA7649A IC504 IC504 R552 R501 (CTL A) (CTL B) (CTL C) Q513 R520 SV1/OTH 0.9Vp-p(H) 0.55Vp-p(H) SEL_3 SEL_4 SEL_5 ∗4 R525 R526 R527 IC503 Q502 J501 D501 R553 1.8k SWITCH...
Page 40: Pip Pwb Circuit Diagram
AV-27D502 AV-27D502 PIP PWB CIRCUIT DIAGRAM AFT2 QQL244K-4R7Z L101 0.22 QQLZ014-R22 R103 C103 9V_VC L113 SF101 R101 C006 CE42589-201 5.6k R1/2 47/25 C101 0.01 TUNER Q101 R115 TU001 ADRS LOCK C105 R104 C104 QAU0228-001 R102 0.01 0.01 SCL SDA 1.8k TUNER R117 R008...
Page 41: Crt Socket Pwb Circuit Diagram
AV-27D502 CRT SOCKET PWB CIRCUIT DIAGRAM TP-B ∗ V01 Y003 R362 1.5k R1/2 PICTURE TUBE QRZ0111-152 R365 L353 OMR2 148.8V R369 Q353 PICTURE TUBE 2.6V 2SC4544-LB R372 B.OUT Q356 2.3V R375 C356 R353 470p TP-R SK351 R368 C353 R356 R359 QNZ0537-001 1.8k SOCKET...
Page 42: Front Control And Front Av Input Pwb Circuit Diagrams
AV-27D502 FRONT CONTROL AND FRONT AV INPUT PWB CIRCUIT DIAGRAMS -FRONT CONTROL- IC701 GP1U281Q REMOCON D701 RECEIVER (RED) SLR-342VR3F POWER VOL+ VOL- MENU R708 R707 1.5k 3.3k C701 S701 R709 S706 S705 S704 S703 S702 47/25 Q701 QSW0619 1.7V QSW0619 QSW0619 QSW0619 QSW0619...
Page 43: Pattern Diagrams
AV-27D502 AV-27D502 PATTERN DIAGRAMS CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, MAIN PWB PATTERN REPLACE ONLY WITH SAME TYPE AND RATED FUSE (S) AND ROHM'S MFR'S TYPE CP(S). W331 W610 LC601 K941 J601 R531 W655 W628 LC602 Y002 W825 R537 D521 D534 W612...
Page 44: Av Selector Pwb Pattern
AV-27D502 AV-27D502 AV SELECTOR PWB PATTERN R229 R230 R231 W220 C237 C251 R242 C244 L251 C243 L201 C241 C242 R245 C232 R246 R236 Q219 R247 R248 R269 C204 C262 R216 FRONT W197 R265 R270 C214 W274 Q262 R566 W060 C263 W317 C212 W105...
Page 45: Crt Socket Pwb Pattern
AV-27D502 AV-27D502 CRT SOCKET PWB PATTERN PIP PWB PATTERN FRONT R372 W082 W005 R352 Q101 C101 W011 R104 PIP TUNER/IF W083 R358 R117 W003 W093 C103 R111 R353 W053 C391 C006 R355 R113 W094 R359 Y001 R370 C355 L101 L352 R369 SF101 R373...
Page 46: Front Control And Front Av Input Pwb Patterns
AV-27D502 AV-27D502 FRONT CONTROL AND FRONT AV INPUT PWB PATTERNS - FRONT CONTROL - MENU VOL- VOL+ POWER POWER LED FRONT S702 S701 S703 S705 S706 S704 D701 R705 IC701 R707 R708 CKF1531-B01-1 MARK CN007 WATO 01.06.13 UL MARK R709 C701 W003 - FRONT AV INPUT -...
Page 47: Channel Chart (Us)
AV-27D502 CHANNEL CHART (US) MODE CHANNEL MODE CHANNEL TUNER TUNER BAND BAND BAND BAND CATV REAL DISP. CATV REAL DISP. W+35 W+36 W+37 W+38 W+39 W+40 W+41 W+42 W+43 W+44 W+45 W+46 W+47 W+48 W+49 W+50 W+51 W+52 W+53 W+54 W+55 W+56 W+57...
Page 48: Channel Chart (Ca)
AV-27D502 CHANNEL CHART (CA) MODE CHANNEL MODE CHANNEL TUNER TUNER BAND BAND BAND BAND CATV REAL DISP. CATV REAL DISP. W+35 W+36 W+37 W+38 W+39 W+40 W+41 W+42 W+43 W+44 W+45 W+46 W+47 W+48 W+49 W+50 W+51 W+52 W+53 W+54 W+55 W+56 W+57...
Page 49 JVC SERVICE & ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP. Head office : 1700 Valley Road, Wayne, New Jersey 07470 (973)317-5000 East Coast : 10 New Maple Avenue, Pine Brook, New Jersey 07058 (973)396-1000 Midwest 705 Enterprise St. Aurora, Illinois 60504...
Page 51 AV-27D502 AV-27D502 AV-27D502 STANDARD CIRCUIT DIAGRAM q NOTE ON USING CIRCUIT DIAGRAMS • 1. SAFETY Type No indication : Ceramic capacitor The components identified by the symbol and shading are : Mylar capacitor critical for safety. For continued safety replace safety critical : Metalized mylar capacitor components only with manufactures recommended parts.
Page 52 AV-27D502 CONTENTS SEMICONDUCTOR SHAPES ..........................2-2 BLOCK DIAGRAM ..............................2-3 CIRCUIT DIAGRAMS ..............................2-5 MAIN PWB CIRCUIT DIAGRAM ..........................2-5 MAIN, FRONT CONTROL AND FRONT AV INPUT PWB CIRCUT DIAGRAMS ........2-9 PIP PWB CIRCUIT DIAGRAM ............................ 2-11 AV SELECTOR PWB CIRCUT DIAGRAM ......................
Page 53: Block Diagram
AV-27D502 AV-27D502 BLOCK DIAGRAM CRT SOCKET PWB R, G, B TU001 R, G, B TUNER CF021 4.5MHz SCL0 SCL0 TRAP SDA0 SDA0 IC101 RGB DRIVE J601 COM_Y COM_CB CF041 COMPONENT 1 CHIP DECODER COM_CR 4.5MHz BPF VIDEO-IN VC-R VC-G VC-B CNMPX V.
Page 54: Circuit Diagrams
AV-27D502 AV-27D502 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM COMPONENT VIDEO INPUT CNMD1 MAIN PWB ASS’Y SAC-1506A-M2 INPUT2 ( AV-27D502 SAC-1507A-M2 ( AV-27D502 CNOL1 X 8.8V 8.7V 4.0V 4.3V 3.3V 3.7V ( NOT USED ) 13.2V 8.7V 0.6V 7.2V R287 4.9V 0.4V 3.6V 0V 3.6V...
Page 55 AV-27D502 AV-27D502 MAIN PWB CIRCUIT DIAGRAM IC401 60Vp-p(V) 0.6V IC401 -13.7V 2.4V 2.4V 13.8 -10.7V 32Vp-p(V) 14.7V 0.7V 1.3V R403 0.82 R404 0.7V FOR ADJ. CONNECTOR CRT SOCKET PWB 5.0V 5.0V 5.0V FR524 4.7 2W FR QRX029J-4R7 FR523 4.7 2W FR QRX029J-4R7 21.6V Q511...
Page 56 AV-27D502 AV-27D502 MAIN , FRONT CONTROL AND FRONT AV INPUT PWB CIRCUIT DIAGRAMS MAIN PWB ASS’Y SAC-1506A-M2 5.0V 3.7V 3.0V ( AV-27D502 2.4V SAC-1507A-M2 FRONT VIDEO, AUDIO ( AV-27D502 INPUT 3.9V INPUT3 3.9V SAC-8602A-M2 FRONT AV INPUT PWB ASS’Y AV SELECTOR 4.1V 0V 0V 4.9V...
Page 57: Pip Pwb Circuit Diagram
AV-27D502 AV-27D502 PIP PWB CIRCUIT DIAGRAM 2.4V 31.5V 8.7V 4.9V 0.6V 0.6V PIP PWB ASS’Y SAC0P502A-M2 4.9V 1.7V Q303 1.1V 2.5Vp-p(H) NOTE 2SC2412K/QR/-X 1SS133-T2 BUS WIRE NON MOUNT MAIN PWB No.51797 2-11 2-12 No.51797...
Page 58 AV-27D502 AV-27D502 AV SELECTOR PWB CIRCUIT DIAGRAM IC501 IC201 IC201 2.1Vp-p(H) 0.68Vp-p(H) 1.4Vp-p(H) IC501 1.4V 1.9Vp-p(H) IC501 4.9V 1.0Vp-p(H) 8.7V 4.9V 2.9V INPUT1 8.7V 8.7V 4.2V 3.5V 3.5V 8.1V 8.7V 3.4V 1.7V 5.2V 3.5V 5.9V 2.9V 4.6V V 4.4V 3.9V V 0V 4.4V 3.9V...
Page 59: Crt Socket Pwb Circuit Diagram
AV-27D502 CRT SOCKET PWB CIRCUIT DIAGRAM PICTURE TUBE 154.9V 8.7V 8.3V SOCKET 159.1V Y002 8.6V MAIN PWB 8.3V 159.8V MAIN PWB 8.8V 8.3V Q351 Q352 Q353 110Vp-p ( H ) 130Vp-p ( H ) 116Vp-p ( H ) CRT SOCKET PWB ASS’Y 8.2V SAC-3506A-M2 ( AV-27D502 SAC-3507A-M2 ( AV-27D502...
Page 60: Lf Pwb Circuit Diagram
AV-27D502 LF PWB CIRCUIT DIAGRAM BRAIDED MAIN WIRE ISOLATED ( NEUTRAL ) LIVE LF PWB ASS’Y SAC-9503A-M2 NOTE BUS WIRE NON MOUNT 2-16 No.51797...
Page 61: Pattern Diagrams
AV-27D502 AV-27D502 PATTERN DIAGRAMS CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD , MAIN PWB PATTERN TP-91B ( B1 ) REPLACE ONLY WITH SAME TYPE AND RATED FUSE ( S ) AND TP-E ROHM’S MFR’S TYPE CP ( S ) . FRONT No.51797 2-17...
Page 62: Av Selector Pwb Pattern
AV-27D502 AV-27D502 AV SELECTOR PWB PATTERN FRONT No.51797 2-19 2-20 No.51797...
Page 63: Crt Socket And Pip Pwb Patterns
AV-27D502 AV-27D502 CRT SOCKET AND PIP PWB PATTERNS CRT SOCKET FRONT No.51797 2-21 2-22 No.51797...
Page 64: Front Control, Front Av Input And Lf Pwb Patterns
AV-27D502 AV-27D502 FRONT CONTROL , FRONT AV INPUT AND LF PWB PATTERNS FRONT CONTROL FRONT FRONT AV INPUT FRONT FRONT No.51797 2-23 2-24 No.51797...
Page 65: Channel Chart (Us/Ca)
AV-27D502 CHANNEL CHART (US) MODE CHANNEL MODE CHANNEL TUNER TUNER BAND BAND BAND BAND CATV REAL DISP. CATV REAL DISP. W+35 W+36 W+37 W+38 W+39 W+40 W+41 W+42 W+43 W+44 W+45 W+46 W+47 W+48 W+49 W+50 W+51 W+52 W+53 W+54 W+55 W+56 W+57...
Page 66 AV-27D502 CHANNEL CHART (CA) MODE CHANNEL MODE CHANNEL TUNER TUNER BAND BAND BAND BAND CATV REAL DISP. CATV REAL DISP. W+35 W+36 W+37 W+38 W+39 W+40 W+41 W+42 W+43 W+44 W+45 W+46 W+47 W+48 W+49 W+50 W+51 W+52 W+53 W+54 W+55 W+56 W+57...
Page 67 JVC SERVICE & ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP. Head office : 1700 Valley Road, Wayne, New Jersey 07470 (973)315-5000 East Coast : 10 New Maple Avenue, Pine Brook, New Jersey 07058 (973)396-1000 Midwest 705 Enterprise St. Aurora, Illinois 60504...
Page 68 AV-27D502 PRELIMINARY SERVICE MANUAL COLOR TELEVISION BASIC CHASSIS AV-27D502 AV-27D502 CONTENTS SAFETY PRECAUTIONS SERVICE ADJUSTMENTS ¤ OPERATING INSTRUCTIONS (APPENDED) ¤ STANDARD CIRCUIT DIAGRAM (APPENDED) No. 51797B COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD. Oct. 2001...
Page 69 AV-27D502 SAFETY PRECAUTIONS 1. The design of this product contains special hardware, many circuits 10. Isolation Check and components specially for safety purposes. For continued pro- (Safety for Electrical Shock Hazard) tection, no changes should be made to the original design unless After re-assembling the product, always perform an isolation check authorized in writing by the manufacturer.
Page 70 AV-27D502 SERVICE ADJUSTMENTS These models (with A mark) were changed chassis from AV-27D502 (AC chassis). This content describes only items which differ from those of the base models SERVICE MANUAL. Please refer to the AV-27D502 SERVICE MANUAL (No.51797 issued Mar. 2001). ADJUSTMENT STEP ■...
Page 71 JVC SERVICE & ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP. Head office : 1700 Valley Road, Wayne, New Jersey 07470 (973)317-5000 East Coast : 10 New Maple Avenue, Pine Brook, New Jersey 07058 (973)396-1000 Midwest 705 Enterprise St. Aurora, Illinois 60504...
Page 72: Parts List
AV-27D502 PARTS LIST CAUTION q The parts identified by the symbol are important for the safety . Whenever replacing these parts, be sure to use specified ones to secure the safety . q The parts not indicated in this Parts List and those which are filled with lines --- in the Parts No. columns will not be supplied . q P.
Page 73: Exploded View Parts List
! V01 A68ADT25X01 Inc. DY(AV-27D502 ! V01 A68QDN891X001 Inc. DY(AV-27D502 QMPD200-200-JC POWER CORD CN90PW Within LF PWB LC30191-002A-A REMOCON WINDOW CM48006-007-C JVC MARK LC20217-005A-A CONTROL KNOB A48457-4-S SPRING WJY0016-001A BRAIDED WIRE WJY0013-004A BRAIDED WIRE CEBSS12D-04KJ2 SPEAKER (x2) SP01, SP02 LC10883-001C-A...
Page 74 AV-27D502 EXPLODED VIEW CRT SOCKET PWB FRONT AV INPUT PWB PIP PWB T1502 FRONT CONTROL MAIN PWB LF PWB AV SELECTOR No. 51797...
Page 75 AV-27D502 PRINTED WIRING BOARD PARTS LIST (AV-27D502 MAIN PW BOARD ASS'Y (SAC-1507A-M2) ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local RESISTOR RESISTOR R1522 NRSA63J-561X MG R 560Ø 1/16W R1001 NRSA63J-473X MG R 47kØ...
Page 76 AV-27D502 ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local RESISTOR CAPACITOR R1917 QRK126J-332X 3.3kØ 1/2W C1393-95 NCB21HK-104X C CAP. 0.1µF 50V K C1401 NDC21HJ-152X C CAP. 1500pF R1918 QRE121J-222Y 2.2kØ 1/2W C1403 NCB21HK-273X...
Page 77 AV-27D502 ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local CAPACITOR DIODE C1938 QETM1EM-228 E CAP. 2200µF 25V M D1910 MA700A-T2 SI.DIODE ! D1911 RGP10J-5025-T3 SI.DIODE C1939 QCB32HK-152Z C CAP. 1500pF 500V K ! D1912 RGP10J-5025-T3...
Page 78: Crt Socket Pw Board Ass'y
AV-27D502 FRONT CONTROL PW BOARD ASS'Y (SAC-8502A-M2) ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local OTHERS RESISTOR K1916-17 QQR0582-001Z BEADS CORE R8702 NRSA63J-472X MG R 4.7kØ 1/16W K1931-33 QQR0582-001Z BEADS CORE R8703 NRSA63J-153X MG R...
Page 79: Lf Pw Board Ass'y
AV-27D502 LF PW BOARD ASS'Y (SAC-9503A-M2) ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local RESISTOR CAPACITOR R9997 QRE121J-5R6Y 5.6Ø 1/2W C0330 NCB31HK-103X C CAP. 0.01µF 50V K ! R9998 C0331 NCB21HK-104X C CAP.
Page 80 AV-27D502 ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local RESISTOR CAPACITOR R0241 NRSA63J-821X MG R 820Ø 1/16W C0160 NCB21HK-104X C CAP. 0.1µF 50V K C0205 QETN1HM-476Z E CAP. 47µF 50V M R0242 NRSA63J-474X MG R...
Page 81: Remote Control Unit Parts List (Rm-C301G-2A)
AV-27D502 ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local DIODE D0504 MTZJ10C-T2 ZENER DIODE D0509-12 MTZJ10C-T2 ZENER DIODE D0514-19 MTZJ10C-T2 ZENER DIODE D0521 MTZJ10C-T2 ZENER DIODE TRANSISTOR Q0211-12 2SC2412K/QR/-X SI.TRANSISTOR Q0218 2SC2412K/QR/-X SI.TRANSISTOR...
Page 82: Rand Av-27D502 /S
AV-27D502 DIFFERENCE PARTS LIST BETWEEN AV-27D502 AND AV-27D502 The picture tubes used for the models AV-27D502 and AV-27D502 are difference. The electrical parts are also difference according to the PICTURE TUBE. In the DIFFERENCE PARTS LIST BETWEEN AV-27D502 and AV-27D502 , only difference points between these models are written.
Page 83 AV-27D502 PACKING PACKING PARTS LIST ! Ref.No. Part No. Part Name Description Local CP30055-001-A TOP COVER CP30056-008-A POLY BAG RM-C301G-2A RC HAND UNIT LCT0903-001A-A INST BOOK BT-51020-1Q REGISTER CARD BT-52004-1Q WARRANTY CARD LC10367-002B-A CUSHION ASSY 4pcs in 1set LC10181-020A-A PACKING CASE CM36616-001-A CORNER LABEL 2pcs in 1set...
Page 84 AV-27D502 No. 51797...
Page 85 For models: AV-36D502 AV-36D302 AV-36D202 COLOR TELEVISION AV-32D502 USER'S GUIDE AV-32D302 AV-32D202 AV-27D502 Illustration of AV-32D502 and RM-C301G IMPORTANT NOTE TO THE CUSTOMER In the spaces below, enter the model and serial number of your television (located at the rear of the television cabinet). Staple your sales receipt or invoice to the inside cover of this guide.
Page 86: Important Safety Precautions
Do not attempt to repair it yourself or remove the rear cover. Changes or modifications not approved by JVC could void the warr a n t y. * When you don’t use this TV set for a long period of time, be sure to disconnect both the power plug from the AC outlet and antenna for your safety.
Page 87: Important Safeguards
IMPORTANT SAFEGUARDS CAUTION: Please read and retain for your safety. Electrical energy can perform many useful functions. This TV set has been engineered and manufactured to assure your personal safety. But improper use can result in poten- tial electrical shock or fire hazards. In order not to defeat the safeguards incorporated in this TV set, observe the following basic rules for its installation, use and servicing.
Page 88 7 An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal.
Page 89 13 For added protection of the TV set during a lightning storm or when the TV set is to be left unattended for an extended period of time, unplug it from the wall outlet and disconnect the antenna. This will prevent damage to product due to lightning storms or power line s u rg e s .
Page 90 Unpacking Your Television Thank you for your purchase of a JVC Color Television. Before you begin setting up your new television, please check to make sure you have all of the following items. In addition to this guide, your television...
Page 91: Quick Setup
The right and left buttons will turn the volume up or down. These buttons are also marked with four arrows and are also used with JVC's onscreen menu system. You will need to use these buttons later in the Quick Setup.
Page 92 Quick Setup 2 Step Two - Making Basic Connections Next you will need to connect your television to an antenna or cable system. The most basic antenna/cable connection is shown below. For more detailed connections, such as ones where a cable box is required, see pages 11 to 13.
Page 93 Your Quick Setup is now complete. You can now begin watching your television, or you can continue on in this guide for more information on connecting audio/video devices, programming your remote control, or using the JVC onscreen menu system to customize your television viewing experience. The Quick Setup...
Page 94 Hyper Surround ... . . 41 Connecting to JVC AV Compu Link . . . 16 Muting ....4 1 B B E.
Page 95: Cable And Vcr Connections
Connections Cable and VCR Connections There are three basic types of antenna or cable connections: • If you have an antenna or have a cable system that does not require you use a cable box to select channels, please refer to Diagram #1. •...
Page 96 Connections Cable and VCR Connections - Continued Diagram #2 Illustration of AV-32D502 1) Connect the antenna or cable TV wire from the wall outlet, in to the RFInput of the cable box. 2) Connect an RF cable from the RF Output of the cable box, in to the RF Input on the back of the VCR.
Page 97 Connections Cable and VCR Connections - Continued Diagram #3 Illustration of AV-32D502 1) Connect the antenna or cable TV wire from the wall outlet, in to the RFInput of the two-way splitter. 2) Connect an RFcable from the one of the RFOutputs on the splitter, in to the cable box RF I n p u t . 3) Connect an RFcable from the Cable Box Output, in to the VCR R FI n p u t .
Page 98: Connecting To A Dvd Player
Connections Connecting to a DVD player Illustration of AV-32D502 1) Connect Green cable out from DVDplayer “Y”Component Output, in to T V“ Y ” Component Input. 2) Connect Blue cable out from DVDplayer “P ”Component Output, in to T V“ P ”Component Input.
Page 99: Connecting To An External Amplifier
Connections Connecting to an External Amplifier Illustration of AV-32D502 1) Connect the white audio cable from the T V ’s Left Audio Output jack to the A m p l i f i e r’s Left Audio Input jack. 2) Connect the red audio cable from the T V ’s Right Audio Output jack to the A m p l i f i e r’s Right Audio Input jack.
Page 100: Connecting To Jvc Av Compu Link
• The AV Compu Link cable has a male 3.5 mm (mono) plug on each end. • If your JVC-brand V C R has “ A Code/B Code Remote Control Switching” (see your V C R ’s instruction book), using V C R A Code will switch the T V to input 1.
Page 101: Remote Control
Tap the CH+ or CH- button to move through the channels one channel at a time. • To move rapidly through the channels using JVC’s Hyperscan feature, press and hold CH+ or CH-. The channels will zip by at a rate of five channels per second.
Page 102: Remote Programming
Remote Programming Setting the CATV, VCR and DVD Codes You can program your remote to operate your cable box, satellite receiver, VCR or DVD player by using the instructions and codes listed below. If the equipment does not respond to any of the codes listed below or to the code search function, use the remote control supplied by the manufacturer.
Page 103: Vcr Codes
Remote Programming VCR codes The remote control is programmed with VCR codes for power on, power off, play, stop, fast-forward, rewind, pause, record, channel up, and channel down operation. 1) Find the VCR brand from the list of codes shown below. 2) Slide the first 2-way selector switch to “TV”...
Page 104: Dvd Codes
Remote Programming DVD codes The remote control is programmed with DVD codes for power on, power off, play, stop, fast-forward, rewind, previous chapter, next chapter, tray open/close, and still/pause operation. 1) Find the DVD player brand from the list of codes shown below. 2) Slide the first 2-way selector switch to “TV”...
Page 105: Onscreen Menus
Onscreen Menus Using the Guide Certain symbols are used throughout this guide to help you learn about the features of your new television. The ones you will see most frequently are: Up and Down arrows mean press the C + or C - buttons.
Page 106: Plug In Menu
Plug In Menu Introduction The Plug In Menu comes up automatically when you first turn on the TV after plugging it in. The Plug In Menu helps you to get your TV ready to use by letting you set your preferences for: •...
Page 107: Auto Clock Set
Plug In Menu Auto Clock Set Before you use any of your TV’s timer functions, you must first set the clock. You may precisely set your clock using the XDS time signal broadcast by most Public Broadcasting stations. To set the clock using the XDS signal: Enter the channel number of your local PBS station Press M...
Page 108: Manual Clock Set
Finish option to save your settings. To FINISH To save settings and exit • You can change the preferences you set in the Plug In Menu at any time using the regular JVC onscreen menu system. NOTES: You will have to reset the clock after a power interruption. You must set the clock before operating...
Page 109: Channel Summary
Channel Summary Channel Summary Channel Summary allows you to customize the line-up of channels received by your TV. You can add or delete channels from the line-up or prevent any unauthorized viewers from watching any or all 181 channels. Press the M b u t t o n E N U To CHANNELSUMMARY...
Page 110: V- C H I
V-Chip Your TV is equipped with V-Chip technology which enables TV Parental Guidelines (for United States and Canada) and Movie (MPAA) Guideline controls. V-Chip technology allows you to pro- gram your TVto receive, or not to receive, programs based on content according to the guidelines. Programs which exceed the ratings limits you set will be blocked.
Page 111 V-Chip US V-Chip Ratings U.S. PARENTAL RATING SYSTEMS P rograms with the following ratings are appropriate for childre n . TV Y is Appropriate for All Children. Programs are created for very young viewers and should be suitable for all ages, including children ages 2 - 6.
Page 112: Setting Us V-Chip Ratings
V-Chip Setting US V-Chip Ratings Press the M button To V-CHIP To operate (Lock icon will appear) Press Z to access the V-Chip menu V-CHIP ON OFF SET US TV RATINGS SET MOVIE RATINGS SET CANADIAN RATINGS ENG SET CANADIAN RATINGS FRE UNRATED VIEW BLOCK FINISH To turn V-Chip ON or OFF...
Page 113: Setting Ratings With The V-Chip Button
V-Chip Setting ratings with the V-Chip button To access Rating information about a certain program, press the V-C button while viewing that program. A display like this will appear: PROGRAM IS RATED : TV-PG - V If you decide you want to block this category of viewing, press "0" while the above screen is visible, and all programs from that category will be blocked.
Page 114: Movie Ratings
V-Chip Movie Ratings NR - Not Rated. This is a film which has no rating. In many cases these films were imported from countries which do not use the MPA A ratings system. Other NRfilms may be from amateur producers who didn’t intend to have their film widely released.
Page 115 V-Chip Canadian V-Chip Ratings E - Exempt. Exempt programming includes: news, sports, documentaries and other information programming, talk shows, music videos, and variety programming. C – Programming Intended for Children. Violence Guidelines: There will be no realistic scenes of violence. Depictions of aggressive behavior will be infrequent and limited to portrayals that are clearly imaginary, comedic or unrealistic in nature.
Page 116: Unrated Programs
V-Chip Unrated Programs Notes About Unrated Programs: Unrated programming refers to any programming which does not contain a rating signal. Programming on television stations which do not broadcast rating signals will be placed in the “Unrated Programming" category. Examples of Unrated programs: Emergency Bulletins Locally Originated Programming News...
Page 117: Set Lock Code
V-Chip Set Lock Code Channel Guard and V-Chip settings are protected by a four-digit Lock Code. Your TV comes pre-set with a Lock Code of "0000". You may change the code to any four-digit number you wish. To change the Lock Code, follow the steps below. Press the M b u t t o n E N U...
Page 118: Picture Settings
Picture Settings Tint Tint allows you to adjust the levels of red and green in your TV picture. Press the M b u t t o n E N U To TINT To increase the levels of green To increase the levels of red To move to the next setting Color The color function lets you make all the colors in the TV picture appear either more vivid or subtle.
Page 119: Noise Muting
Picture Settings Noise Muting This feature inserts a blank blue screen over channels which are not broadcasting or are too weak to be received clearly. Press the M b u t t o n E N U To NOISE MUTING To turn Noise Muting ON or OFF •...
Page 120: Sound Settings
Sound Settings Bass You can increase or decrease the level of low-frequency sound in the T V ’s audio with the Bass adjustment. Press the M b u t t o n E N U To BASS To increase the bass To decrease the bass To move to the next setting Treble...
Page 121: General Items
General Items On/Off Timer The On/Off timer lets you program your television to turn itself on or off. You can use it as an alarm to wake up, to help you remember important programs, or as a decoy when you're not home. Press the M b u t t o n E N U...
Page 122: Tv Speaker
General Items TV Speaker If your TV is connected to a stereo system, you can turn off the T V speakers and listen to the audio through your stereo. Press the M b u t t o n E N U To TV SPEAKER TV SPEAKER To turn the TV's speakers ONor OFF...
Page 123: V2 Component-In
General Items V2 Component-In Get the best quality video from your DVD player by using this setting and the DVD inputs at the rear of the television. Set either to YES for component input (for DVD) or to NO for composite video input (for a regular VCR).
Page 124: Button Functions
Button Functions Menu The M button allows you to access JVC’s onscreen menu system. Press M to activate the E N U E N U onscreen menu system. • See individual topics (like “Sound Settings) for specific information on using menus.
Page 125: Video Status
Button Functions Video Status The V button gives you a choice of three TV picture display settings, including a IDEO TATUS display of your own preferences. Standard - Resets the picture display to the factory settings. Choice - Displays the setting levels you specified on the "Set Video Status" Menu (see page 35). Theater - Gives a rich, film-like look to video.
Page 126: R E T U
Button Functions BBE high definition audio adds natural, clear and extraordinary sound quality to any program. Turn BBE On or Off using the BBE button. 100+ Button Use the 100+ button to directly access channels above Channel 99. For example to move to channel 124, p r e s s100+, 2 (two), 4 (four).
Page 127: Vcr Buttons
Move the selector switch to V C R to operate. • The remote is preset with the code 000 to control JVC-brand VCR’s. For any other manufacturer’s brand VCR, please see the code chart and instructions on page 19.
Page 128: O N / M O V
Button Functions - PIP P I P displays two separate pictures on screen. Your television has 2-Tuner PIP, meaning you can view pictures from two different channels simultaneously. Aspecial set of PIPcontrol buttons are located on the upper part of the remote control. Descriptions of each button appear on this page. The PIP feature is ava i l a ble on series D502 models only.
Page 129: S W A
Button Functions - PIP Freeze Use the F button to lock a single, still image onto the PIP window. REEZE • If PIP is off when F is pressed, a snapshot of the main screen is taken and placed in the REEZE PIPwindow.
Page 130: Troubleshooting
Troubleshooting...
Page 131: Warranty
JVC Factory Service Center, the name and location which will be given to you by the toll free number.
Page 132 THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILTY, IS LIMITED TO THE DURATION OF THE EXPRESS WARRANTY HEREIN. JVC SHALL NOT BE LIABLE FOR THE LOSS OF USE OF THE PRODUCT, INCONVENIENCE, OR ANY OTHER DAMAGES,WHETHER DIRECT, INCIDENTAL OR CONSEQUENTIAL (INCLUD-...
Page 133: Authorized Service Centers
To prevent electrical shock, do not open the cabinet. There are no user serviceable parts inside. Please refer to qualified service personnel for repairs. Accessories To purchase accessories for your JVC product, please call toll free: 1 (800) 882-2345 or on the web at www.JVC.com For service in Canada...
Page 134: Search Codes
Search Codes Cable/Satellite Search Codes Function: 1) Slide the first 2-Way Mode Selector switch to CATV. 2) Press the TV P and R + buttons. Hold for at least three seconds and release. OWER ETURN 3) Press TV P , see if the CATV or Satellite box responds. OWER 4) If there was a response, press R +.
Page 135 Specifications Specifications subject to change without notice.
Page 136 JVC COMPANY OF AMERICA JVC CANADA, INC. Division of JVC Americas Corp. 21 Finchdene Square 1700 Valley Road Scarborough, Ontario Wayne, New Jersey, 07470 Canada, M1X 1A7...
Page 137 AV-27D502 SERVICE MANUAL COLOR TELEVISION BASIC CHASSIS AV-27D502 AV-27D502 CONTENTS SPECIFICATIONS ............................2 SAFETY PRECAUTIONS ........................3 FEATURES ..............................4 MAIN DIFFERENCE LIST ........................5 HOW TO IDENTIFY MODELS ........................5 FUNCTIONS .............................6 SPECIFIC SERVICE INSTRUCTIONS ....................7 SERVICE ADJUSTMENTS ........................12 ¤ STANDARD CIRCUIT DIAGRAM (APPENDIX) .................. 2-1 PARTS LIST ............................31 No.
Page 138: S P E C I F I C A T I O N
AV-27D502 SPECIFICATIONS Items Contents Dimensions (W × H × D) 29-5/8” × 23-1/4” × 19-1/2” / 75.2cm × 59.1cm × 49.4cm ················································································································································································································ Mass 71.3 Ibs/32.4kg ················································································································································································································ TV RF System CCIR(M) ················································································································································································································ Color Sound System NTSC, BTSC System (Multi Channel Sound) ················································································································································································································...
Page 139: Safety Precautions
AV-27D502 SAFETY PRECAUTIONS 1. The design of this product contains special hardware, many circuits 10. Isolation Check and components specially for safety purposes. For continued pro- (Safety for Electrical Shock Hazard) tection, no changes should be made to the original design unless After re-assembling the product, always perform an isolation check authorized in writing by the manufacturer.
Page 140: Features
AV-27D502 FEATURES • • Full-square CRT (cathode ray tube) reproduces fine textured pic- Component input terminal for taking best advantage of Component ture in every detail. Video Signal. • • Audio Video input terminal. (S-input ×2, V-input ×2) C bus control utilizes single chip ICs. •...
Page 141: Main Difference List
AV-27D502 MAIN DIFFERENCE LIST Model AV-27D502 AV-27D502 Part name MAIN PWB SGC-1002A-M2 SGC-1001A-M2 CRT SOCKET PWB SGC-3002A-M2 SGC-3001A-M2 PICTURE TUBE A68ADT25X01 A68QDN891X001 HOW TO IDENTIFY MODELS The difference between AV-27D502 and AV-27D502 is in the PICTURE TUBE. As the result of the difference in PICTURE TUBE, the MAIN PWB also differ. Model AV-27D502 AV-27D502...
Page 142: Functions
AV-27D502 FUNCTIONS FRONT PANEL MENU CHANNEL VOLUME POWER ON TIMER OPERATE MENU CHANNEL POWER VOLUME REMOTE CONTROL UNIT FRONT PANEL DOOR OPENED (RM-C301G-2A) INPUT3 TV CATV POWER VIDEO L/MONO-AUDIO-R CHANNEL ON/MOVE INPUT3 VIDEO/AUDIO TERMINAL SOURCE FREEZE SWAP INPUT VIDEO STATUS REAR PANEL DISPLAY 100+...
Page 143: Specific Service Instructions
AV-27D502 SPECIFIC SERVICE INSTRUCTIONS DISASSEMBLY PROCEDURE REMOVING THE REAR COVER REMOVING THE SPEAKER • 1. Unplug the power supply cord. After removing the rear cover. 2. Remove the 12 screws marked A as shown in Fig.1. 1. Remove the 4 screws marked H as shown in Fig.1. 3.
Page 144 AV-27D502 PICTURE TUBE FRONT CABINET SPEAKER H (x4) CRT SOCKET PWB FRONT AV INPUT PWB AV SELECTOR PWB G (x2) PIP PWB CLAW MAIN PWB (x3) CHASSIS BASE CLAW H (x4) FRONT CONTROL SPEAKER REAR COVER (x4) A (x9) (x3) Fig.1 No.
Page 145 AV-27D502 MEMORY IC REPLACEMENT 1. Memory IC This model use a memory IC. This memory IC stores data for proper operation of the video and deflection circuits. When replacing, be sure to use an IC containing this (initial value) data. 2.
Page 146 AV-27D502 TABLE 1 (System Constant setting) Setting item Setting content Setting value AV-36230A AV-27D502A AV-32D502A AV-36D302A AV-32D302A AV-36D502A MODEL AV-27D502A AV-32D202A AV-36D202A AV-27260A AV-32230A AV-36260A AV-32260A V-CHIP CAN V-CHIP TABLE 2 (User setting value) Setting item Setting value 1. Use remote controller keys POWER CHANNEL CH-02...
Page 147 AV-27D502 REPLACEMENT OF CHIP COMPONENT CAUTIONS 1. Avoid heating for more than 3 seconds. 2. Do not rub the electrodes and the resist parts of the pattern. 3. When removing a chip part, melt the solder adequately. 4. Do not reuse a chip part after removing it. SOLDERING IRON 1.
Page 148: Service Adjustments
AV-27D502 SERVICE ADJUSTMENTS ADJUSTMENT PREPARATION 1. You can make the necessary adjustments for this unit with either the remote control unit or with the adjustment equipment and parts as given below. 2. Adjustment with the remote control unit is made on the basis of the initial setting values, however, the new setting values which set the screen to its optimum condition may differ from the initial settings.
Page 149 AV-27D502 ADJUSTMENT LOCATIONS FRONT CONTROL PWB FRONT AV INPUT PWB POWER MENU FRONT FRONT MAIN PWB CN007 FRONT IC702 IC701 CPU F901 125V 5A CN004 Q511 Heatsink S421 J601 CN005 TU001 TU001 UPPER : FOCUS AV SELECTOR PWB LOWER : SCREEN FRONT CN006 CRT SOCKET PWB...
Page 150 AV-27D502 BASIC OPERATION OF SERVICE MENU 1. TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 2. SERVICE MENU ITEMS In general, basic setting (adjustments) items or verifications are performed in the SERVICE MENU. • PICTURE .......
Page 151 AV-27D502 SERVICE MENU (MAIN MENU) SCREEN PICTURE MODE SERVICE MENU PICTURE SOUND THEATER OTHERS LOW LIGHT HIGH LIGHT RF AFC1 RF AFC2 TU2 VCO I2C BUS CTRL SELECT SELECT 1. BRIGHT 99999999 OPERATE BY EXIT BY EXIT BY STATUS HIGH LIGHT MODE SOUND MODE OTHERS MODE HIGH LIGHT...
Page 152 AV-27D502 (4) Setting method SETTING ITEM 1) UP / DOWN key of the MENU Select the SETTING ITEM. 2) LEFT / RIGHT key of the MENU Setting (adjust) the SETTING VALUE of the SETTING ITEM. When the key is released the SETTING VALUE will be stored (memorized). 3) EXIT key Returns to the previous screen.
Page 153 AV-27D502 INITIAL SETTING VALUE OF SERVICE MENU 1. Adjustment of the SERVICE MENU is made on the basis of the initial setting values; however, the new setting values which set the screen in its optimum condition may differ from the initial setting. 2.
Page 154 AV-27D502 Initial setting value Setting (Adjustment) item Variable range AV-27D502 AV-27D502 R Y GAIN 000 / 001 CMP R Y GA 000 / 001 G Y PHASE 000 / 001 CMP G Y PH 000 / 001 CD MATRIX 000 — 003 CMP CD MAT 000 —...
Page 155 AV-27D502 Initial setting value Setting (Adjustment) item Variable range AV-27D502 AV-27D502 H EHT 000 — 007 BTM PIN 000 — 031 V BLK LOW 000 — 003 V BLK UP 000 — 003 CAPTION IN 000 / 001 H BLK 000 / 001 SCREEN 000 / 001...
Page 156 AV-27D502 • SOUND MODE Initial setting value Setting (Adjustment) item Variable range AV-27D502 AV-27D502 NOISE DET. 000 / 001 IN LEVEL 000 — 063 FH MONITOR 000 / 001 STEREO VCO 000 — 063 PILOT CAN. 000 / 001 FILTER 000 —...
Page 157 AV-27D502 • OTHERS MODE Initial setting value Setting (Adjustment) item Variable range AV-27D502 AV-27D502 OSD POS. 000 — 007 CCD POS. 000 — 015 EOSEL 000 / 001 MENU COLOR 000 — –030 –010 MENU PICT. 000 — –030 –010 MENU BRI.
Page 158 AV-27D502 • LOW LIGHT MODE Setting (Adjustment) item Variable range Initial setting value R CUTOFF 0 — 255 G CUTOFF 0 — 255 B CUTOFF 0 — 255 • HIGH LIGHT MODE Setting (Adjustment) item Variable range Initial setting value R DRIVE 0 —...
Page 159 AV-27D502 ADJUSTMENTS B1 POWER SUPPLY Measuring Item Test point Adjustment part Description instrument DC Voltmeter B1 (pin 1) 1. Receive a black-and-white signal. Check of B1 POWER GND (pin 3) 2. Connect the DC Voltmeter between B1 and GND (between pin 1 [B1 connector and 3 of the B1 connector).
Page 160 AV-27D502 ADJUSTMENT OF WHITE BALANCE Measuring Item Test point Adjustment part Description instrument WHITE Signal No.1 BRIGHT Note : BALANCE generator Set VIDEO STATUS to “STANDARD”. (Low Light) R CUTOFF adjustment Remote G CUTOFF 1. Receive a black-and-white signal.(Color off) control unit B CUTOFF 2.
Page 161 AV-27D502 Measuring Item Test point Adjustment part Description instrument No.8 P R DR Notes: Signal HIGH LIGHT generator No.10 P B DR • Proceed to the following this adjustment after having completed the adjustments of LOW LIGHT WHITE BALANCE and HIGH LIGHT WHITE WHITE BALANCE for the main picture.
Page 162 AV-27D502 ADJUSTMENT OF DEFLECTION Measuring Item Test point Adjustment part Description instrument Signal No.71 V POSI Note: V POSITION and V SIZE generator No.66 V SIZE Proceed to the following this adjustment after having completed the adjustments of SUB BRIGHT and SUB CONTRAST. adjustment Remote S1421(V CENTER SW)
Page 163 AV-27D502 ADJUSTMENT OF CHROMA Measuring Item Test point Adjustment part Description instrument SUB COLOR Signal TP-B No.3 COLOR Notes: • Proceed to the following this adjustment after having completed the adjustment generator TP-E( [CRT SOCKET adjustment of CONTRAST. Oscilloscope PWB] •...
Page 164 AV-27D502 ADJUSTMENT OF MTS CIRCUIT Measuring Item Test point Adjustment part Description instrument No.2 IN LEVEL 1. Select the No.2 IN LEVEL of the SOUND MODE. MTS INPUT Remote LEVEL 2. Verify that the No.2 IN LEVEL is set at its initial setting value. control unit check Signal...
Page 165 AV-27D502 HOW TO CHECK THE HIGH VOLTAGE HOLD DOWN CIRCUIT 1. HIGH VOLTAGE HOLD DOWN CIRCUIT After repairing the high voltage hold down circuit shown in Fig. 1. This circuit shall be checked to operate correctly. 2. CHECKING OF THE HIGH VOLTAGE HOLD DOWN CIRCUIT (1) Turn the POWER SW ON.
Page 166 AV-27D502 SELF CHECK FUNCTIONS 1. Outline This model has self check functions given below. When a malfunction has been detected, the POWER is turned off and the LED flashes to inform of the failure . The malfunction is detected by the signal input state of the control line connected to the microcomputer. 2.
Page 167 JVC SERVICE & ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP. Head office : 1700 Valley Road, Wayne, New Jersey 07470 (973)317-5000 East Coast : 10 New Maple Avenue, Pine Brook, New Jersey 07058 (973)396-1000 Midwest 705 Enterprise St. Aurora, Illinois 60504...
Page 168: Parts List
AV-27D502 PARTS LIST CAUTION q The parts identified by the symbol are important for the safety . Whenever replacing these parts, be sure to use specified ones to secure the safety . q The parts not indicated in this Parts List and those which are filled with lines --- in the Parts No. columns will not be supplied . q P.
Page 169 ! V01 A68ADT25X01 Inc. DY(AV-27D502 ! V01 A68QDN891X001 Inc. DY(AV-27D502 QMPD200-200-JC POWER CORD CN10PW Within MAIN PWB LC30191-002A-A REMOCON WINDOW CM48006-007-C JVC MARK LC20217-005B-A CONTROL KNOB A48457-4-S SPRING WJY0016-001A BRAIDED WIRE WJY0013-004A BRAIDED WIRE CEBSS12D-04KJ2 SPEAKER (x2) SP01, SP02 LC10883-001C-A...
Page 170: Exploded View
AV-27D502 EXPLODED VIEW CRT SOCKET PWB FRONT AV INPUT PWB MAIN PWB PIP PWB T1502 FRONT CONTROL AV SELECTOR No. 51797C...
Page 171: Printed Wiring Board Parts List
AV-27D502 PRINTED WIRING BOARD PARTS LIST (AV-27D502 MAIN PW BOARD ASS’Y(SGC-1002A-M2) ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local RESISTOR RESISTOR R1001 NRSA63J-473X MG R 47kØ 1/16W R1511 QRE121J-220Y 22Ø 1/2W R1002 NRSA63J-0R0X...
Page 172 AV-27D502 ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local RESISTOR CAPACITOR R1856 QRX039J-6R8 MF R 6.8Ø C1281 QFV71HJ-474Z MF CAP. 0.47µF ! R1857 QRL029J-270 OM R 27Ø C1282 QETN1CM-227Z E CAP. 220µF 16V M ! R1858...
Page 173 AV-27D502 ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local CAPACITOR DIODE C1856-57 QETN1CM-107Z E CAP. 100µF 16V M D1501 RH3G-F1 SI.DIODE ! C1901 ! D1502 QFZ9067-104 MM CAP. 0.1µF RU3AM-LFC4 SI.DIODE ! C1902 QFZ9067-473...
Page 174: Crt Socket Pw Board Ass'y
AV-27D502 ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local OTHERS IC1101 TB1253AN I.C(M) W1795 NRSA63J-0R0X MG R 0.0Ø 1/16W ! IC1421 LA7841 I.C(MONO-ANA) W1797-98 NRSA63J-0R0X MG R 0.0Ø 1/16W IC1621 LA4485 I.C(MONO-ANA) W1804...
Page 175: Front Control Pw Board Ass'y
AV-27D502 FRONT CONTROL PW BOARD ASS’Y(SGC-8501A-M2) PIP PW BOARD ASS’Y(SGC0P001A-M2) ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local RESISTOR RESISTOR R8702 NRSA63J-472X MG R 4.7kØ 1/16W R0001-02 NRSA63J-103X MG R 10kØ...
Page 176: Av Selector Pw Board Ass'y
AV-27D502 ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local CAPACITOR RESISTOR C0323 QETN1HM-106Z E CAP. 10µF 50V M R0089 NRSA63J-562X MG R 5.6kØ 1/16W C0324-25 NCB31HK-103X C CAP. 0.01µF 50V K R0090 NRSA63J-563X MG R...
Page 177 AV-27D502 ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local RESISTOR CAPACITOR R0542 NRSA63J-821X MG R 820Ø 1/16W C0255 NDC31HJ-390X C CAP. 39pF R0543-44 NRSA63J-182X MG R 1.8kØ 1/16W C0261 NRSA63J-222X MG R 2.2kØ...
Page 178: Remote Control Unit Parts List(Rm-C301G-2A)
AV-27D502 ! Symbol No. ! Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local OTHERS J0501 QNZ0454-001 PIN JACK J0502 QNZ0531-001 AV JACK J0503 QNN0348-001 PIN JACK W0060 NRSA63J-0R0X MG R 0.0Ø 1/16W W0105 NRSA63J-0R0X MG R 0.0Ø...
Page 179: Difference Parts List Between Av-27D502
AV-27D502 DIFFERENCE PARTS LIST BETWEEN AV-27D502 AND AV-27D502 The picture tubes used for the models AV-27D502 and AV-27D502 are difference. The electrical parts are also difference according to the PICTURE TUBE. In the DIFFERENCE PARTS LIST BETWEEN AV-27D502 and AV-27D502 , only difference points between these models are written.
Page 180 AV-27D502 PACKING PACKING PARTS LIST ! Ref.No. Part No. Part Name Description Local CP30055-001-A TOP COVER CP30056-008-A POLY BAG RM-C301G-2A RC HAND UNIT LCT0903-001B-A INST BOOK BT-51020-1Q REGIST CARD (AV-27D502 BT-51028-1Q REGIST CARD (AV-27D502 BT-52004-1Q WARRANTY CARD LC10367-002B-A CUSHION ASSY 4pcs in 1set LC10181-020A-A PACKING CASE...

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JVC AV-27D502/R Service Manual

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