Philips DVP721VR Service Manual

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Specifications (2 pages)

User manual (41 pages)

Owner's manual (40 pages)

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Table of Contents

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DVD-VCR

Service

Service Manual

SECTION 1 SUMMARY

PRODUCT SAFETY SERVICING GUIDELINES FOR

VIDEO PRODUCTS

SERVICING PRECAUTIONS

SERVICE INFORMATION FOR EEPROM IC SETTING

SPECIFICATIONS

1-5

SECTION 2 CABINET & MAIN CHASSIS

EXPLODED VIEWS

1. CABINET AND MAIN FRAME SECTION

2. PACKING ACCESSORY SECTION

SECTION 3 ELECTRICAL

OVERALL BLOCK DIAGRAM

VCR PART

ELECTRICAL ADJUSTMENT PROCEDURES

ELECTRICAL TROUBLESHOOTING GUIDE

1. POWER(SMPS) CIRCUIT

2. SYSTEM/KEY CIRCUIT

3. SERVO CIRCUIT

4. Y/C CIRCUIT

5. HI-FI CIRCUIT

6. TUNER/IF CIRCUIT

BLOCK DIAGRAMS

1. POWER(SMPS) BLOCK DIAGRAM

2. TU/IF, NICAM & A2 BLOCK DIAGRAM

3. VPS BLOCK DIAGRAM

4. Y/C BLOCK DIAGRAM

5. HI-FI BLOCK DIAGRAM

6. SYSTEM BLOCK DIAGRAM

CIRCUIT DIAGRAMS

1. POWER(SMPS) CIRCUIT DIAGRAM 1

2. POWER(SMPS) CIRCUIT DIAGRAM 2

3. TU/IF, NICAM & A2 CIRCUIT DIAGRAM

4. A/V CIRCUIT DIAGRAM

5. HI-FI CIRCUIT DIAGRAM

6. SCART(JACK) CIRCUIT DIAGRAM

7. SYSTEM CIRCUIT DIAGRAM

• WAVEFORM & VOLTAGE SHEET

• CIRCUIT VOLTAGE CHART

Published by LG-KC 0429 Service AV Systems

Version 1.2

PRINTED CIRCUIT DIAGRAMS 3-50

1-1

1. MAIN P.C.BOARD (VCR+DVD)_SOLDER SIDE

2. MAIN P.C.BOARD (VCR+DVD)_COMPONENT SIDE

1-2

3. SMPS P.C.BOARD

1-3

1-4

DVD PART

ELECTRICAL TROUBLESHOOTING GUIDE

1. SYSTEM OPERATION FLOW

2-1

2. SYSTEM TEST FLOW

2-2

DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING

2-2

1. SYSTEM 27MHZ CLOCK, RESET, FLASH R/W SIGNAL

2-3

2. SDRAM CLOCK

3. TRAY OPEN/CLOSE SIGNAL

3-1

4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)

3-2

5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)

6. LASER POWER CONTROL RELATED SIGNAL

3-3

(NO DISC CONDITION)

3-4

7. DISC TYPE JUDGEMENT WAVEFORM

3-4

8. FOCUS ON WAVEFORM

3-7

9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)

3-8

10. TRACKING CONTROL RELATED SIGNAL

3-9

3-15

11. MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT(SPDIF)

3-18

12. MT1389 VIDEO OUTPUT WAVEFORM

3-20

13. MT1389 AUDIO OUTPUT TO AUDIO DAC

3-20

14. AUDIO OUTPUT FROM AUDIO DAC

3-22

BLOCK DIAGRAMS

3-23

1. OVERALL BLOCK DIAGRAM

3-24

2. SERVO BLOCK DIAGRAM

3-26

3. MPEG & MEMORY BLOCK DIAGRAM

3-28

4. VIDEO & AUDIO BLOCK DIAGRAM

3-30

CIRCUIT DIAGRAMS

3-30

1. SYSTEM CIRCUIT DIAGRAM

3-32

2. RF & DSP SERVO CIRCUIT DIAGRAM

3-34

3. AV/JACK CIRCUIT DIAGRAM

3-36

• CIRCUIT VOLTAGE CHART

3-38

3-40

SECTION 4 MECHANISM (D-37) OF VCR PART

3-42

3-44

SECTION 5 MECHANISM OF DVD PART

SECTION 5 MECHANISM OF DVD P

3-46

SECTION 6 SPARE PARTS LIST

Printed in the Netherlands

DVP721VR/00/02/05/14

(SYSTEM CHECKING)

Subject to modification

DVP721VR

3-50

3-52

3-54

3-56

3-57

3-63

3-65

3-66

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3-69

3-70

3-71

3-72

3-73

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3-81

3-73

3-85

4-1

ART

5-1

6-1

3139 785 30712

Table of Contents

Chapters

Table of Contents

Troubleshooting

Summary of Contents for Philips DVP721VR

Page 1 DVD-VCR DVD-VCR DVD-VCR DVD-VCR DVP721VR DVP721VR DVP721VR DVP721VR DVP721VR/00/02/05/14 DVP721VR/00/02/05/14 DVP721VR/00/02/05/14 DVP721VR/00/02/05/14 Service Service Service Service Service Service Service Service Service Service Service Service Service Manual Service Manual Service Manual Service Manual PRINTED CIRCUIT DIAGRAMS 3-50 PRINTED CIRCUIT DIAGRAMS 3-50...
Page 2 CONTENTS SECTION 1 ..SUMMARY SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..MECHANISM OF VCR PART SECTION 5 ..MECHANISM OF DVD PART SECTION 6 .
Page 3 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS ..1-2 SERVICING PRECAUTIONS .................. 1-3 SERVICE INFORMATION FOR EEPROM IC SETTING ........1-4 SPECIFICATIONS ....................1-5...
Page 4: Product Safety Servicing Guidelines For Video Products
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, SUBJECT : X-RADIATION NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC- 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER- TURER’S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY SONNEL COVER THE SUBJECT OF X-RADIATION.
Page 5: Servicing Precautions
SERVICING PRECAUTIONS CAUTION : Before servicing the VCR+DVD covered by this Electrostatically Sensitive (ES) Devices service data and its supplements and addends, read and fol- Some semiconductor (solid state) devices can be damaged low the SAFETY PRECAUTIONS. NOTE : if unforeseen cir- easily by static electricity.
Page 6: Service Information For Eeprom Ic Setting
2. EEPROM WRITED COMPLETE SCREEN - Writes data on EEPROM by using REMOCON MODEL NAME HEX BINARY "OK". DVP721VR/00 OPT1 00000000 - If completing the option data screen with a menu OPT2 00000000 key, Powering Off is automatically done and the option edit screen is arranged.
Page 7: Specifications
SPECIFICATIONS General Power requirements AC 220-230V, 50Hz Power consumption Dimensions (approx.) 430 X 78.5 X 265 mm (w/h/d) Mass (approx.) 4.06 kg Operating temperature 5°C to 35°C (41°F to 95°F) Operating humidity 5 % to 90 % Timer 24 hours display type RF Modulator UHF 22-68 (Adjustable) System...
Page 8 SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ........................2-2 1. Cabinet and Main Frame Section ...................2-2 2. Packing Accessory Section ....................2-3...
Page 9 EXPLODED VIEWS 1. Cabinet and Main Frame Section...
Page 10: Packing Accessory Section
2. Packing Accessory Section 810 CABLE ASS'Y, RF CABLE, COAXIAL PLUG ASS'Y 1WAY(YELLOW) PLUG ASS'Y 2WAY(RED/WHITE) 813 PLUG ASS'Y 1WAY(BLACK) BATTERY 821 SCART CABLE REMOCON INSTRUCTION ASSEMBLY PACKING PACKING BOX CARTON OPTIONAL PARTS...
Page 11: Table Of Contents
SECTION 3 ELECTRICAL CONTENTS OVERALL BLOCK DIAGRAM DVD PART ......3-2 VCR PART ELECTRICAL TROUBLESHOOTING GUIDE .................3-56 ELECTRICAL ADJUSTMENT 1. SYSTEM OPERATION FLOW ......3-56 PROCEDURES ............3-3 2. SYSTEM TEST FLOW ..........3-57 ELECTRICAL TROUBLESHOOTING DETAILS AND WAVEFORMS ON SYSTEM GUIDE ................3-4 TEST AND DEBUGGING ........3-63 1.
Page 12 OVERALL WIRING DIAGRAM...
Page 13: Vcr Part
VCR PART ELECTRICAL ADJUSTMENT PROCEDURES 1. Servo Adjustment 1) PG Adjustment • Test Equipment a) OSCILLOSCOPE C) PAL MODEL : PAL SP TEST TAPE b) NTSC MODEL : NTSC SP TEST TAPE • Adjustment And Specification MODE MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION V.Out PLAY...
Page 14: Electrical Troubleshooting Guide
ELECTRICAL TROUBLESHOOTING GUIDE 1. Power(SMPS) CIRCUIT NO 5.3VA. Is the D113 Replace the D113. normal? Replace the F101. Is the F101 normal? (Use the same Fuse) Is the D108 Replace the D108. normal? Is the BD101 Replace the normal? BD101. Is the D107 Replace the D107.
Page 15 NO 5VT. No 3.3V. (TO DVD) Is the Vcc(5.3V) sup- Check or Replace Is there about 3.7V Check or Replace plied to Q163 Emittor? the D118 at the IC152 pin1? the D111 Is the Q164 Base Check the TIMER “H” Is there about 3.3V~5V Check the PWR CTL “H”?
Page 16 No 8V (TO DVD) No 33VT Check or Replace Check or Replace Is there about 13V Is the Vcc(33V) supplied at the IC151 pin1? to Q161 Emitter? the D110. the D113. Is there about 3.3V~5V Check the PWR CTL“H” Is the Q173 Base Check the TIMER CTL“H”...
Page 17: System/Key Circuit
2. SYSTEM/KEY CIRCUIT (1) AUTO STOP Auto Stop Does the SW25 waveform Check the Drum Motor appear at the IC501 signal. Pin105? Do T/UP Reel Pulses Do the T-UP Reel Pulses Does 5.0V appear at the appear at the Q514 appear at the IC501 Pin49? RS501? Base terminal ?
Page 18: Servo Circuit
3. SERVO CIRCUIT (1) Unstable Video in PB MODE Unstable Video in PB Mode. Does the Noise level of the screen change periodically? Do the CTL pulses appear Is adjusting the height of at the IC501 Pin8? the CTL Head accurate? Does the CFG waveform Readjust the height of the appear at the IC501...
Page 19 2. SERVO CIRCUIT (3) When the Capstan Motor doesn’t run, When the Capstan Motor doesn’t run, Refer to “SMPS(CAPSTAN/12Volt) Does 12VA appear at the PMC01? Trouble Shooting”. Does 2.8V appear at the PMC01? Check the PMC01 and the Capstan Does the PWM signal appear at the IC501 Pin108? Motor Ass’y.
Page 20 (4) KEY doesn’t working KEY doesn’t working. Is 5V applied to the IC501 Refer to “SMPS 5.3VA Pin36? Trouble Shooting”. Does LED or FLD change Replace the defective when a function button is switches. pressed? 3-10...
Page 21: Y/C Circuit
4. Y/C CIRCUIT (1) No Video in EE Mode, No Video in EE Mode Does the Video signal Check the 19Pin of Tuner. appear at the IC301 Pin48? Is 5V applied to the IC301 Check the 5.0VT, 5.3VA Pins18, 24, 42, 55, 72, 91? Line.
Page 22 3. Y/C CIRCUIT (2) When the Y(Luminance) signal doesn’t appear on the screen in PB Mode, Is 5.0VT, 5.3VA applied to the Check the line of the 5.0VT, 5.3VA Line. (Power Circuit) IC301 Pins24, 42, 55, 72, 91? Is the I C Bus siganl applied Refer to ‘SYSTEM I C BUS...
Page 23 3. Y/C CIRCUIT (3) When the C(Color) signal doesn’t appear on the screen in PB Mode, Is 5.0VT/5.3VA applied to the Check the line of the 5.0VT/ 5.3VA Line. (Power Circuit) IC301 Pins24, 42, 55, 72, 91. Is the Color Rotary signal Check the Color Rotary applied to the IC301 Circuit.
Page 24 3. Y/C CIRCUIT (4) When the Video signal doesn’t appear on the screen in REC Mode, Is the EE signal normal? Check EE Mode. Is 5.0VT/5.3VA applied to the Check the line of the 5.0VT/ IC301 Pins24,42,55,72,91? 5.3VA Line.(Power Circuit) Does PB Mdoe operate Check PB Mode.
Page 25: Hi-Fi Circuit
5. Hi-Fi CIRCUIT (A) No Sound(EE Mode) No Sound. Check the TU Audio of IC801 Check the IC751 Pins30, 31. Pins2, 3. Check the DVD Audio of IC801 Check the DVD Audio OUT. (JK902 DVD_A_L_L/R). Pins4, 5. Check the AV1 Audio of IC801 Check the Scart1 Jack.
Page 26 3. Y/C CIRCUIT (B) Hi-Fi Playback PB mode No Sound. Check the Vcc of IC801 Check Power 5.0V, 12VT. (Pins34, 40) Check the Hi-Fi Selection switch. Check IC501 Pin106 (A.H/SW) (IC801 Pin41) and the Tape quality. Is the RF Envelope at IC801 Pin44 over 2Vp-p? Check IC801 Pin42(Data), Check the parts of µ-COM...
Page 27 Hi-Fi REC. It can’t be recorded Hi-Fi Audio signal. Check Vcc of IC801.(Pins34, 40) Check Power 5V, 12VT. Check ports of µ-COM. Check IC801 Pin42(Data), Pin43(CLOCK). (IC501 pins 59, 60) Check Audio input signal of IC801 Do Audio signals appear at IC801 Pins2, 3(TU.A.), 4, 5(DVD.A.), Pins16, 17? 6, 7(AVI.A.), 8, 9(AV2.A.), 10, 11(AV3.A.).
Page 28: Tuner/If Circuit
6. Tuner/IF CIRCUIT (A) No Picture on the TV screen No picture on the TV screen Does the Video signal at Is 33VT applied to TU701 Check 33VT line. the TU701 Pin19. Pin17? Is 5VT applied to TU701 Check 5VT line. Pin4? Does the Clock signal Check the lIC Clock Signal...
Page 29 (B) No Sound No Sound. Check the Vcc of IC751 Pins1, 11, 19, Check 5.0V Line. 22, 33. Check the Tuner SiF signal at IC751 Check the Tuner SIF of TU701 Pin22. Pin2. Check the oscillator of IC751 Pins5, 6. Replace X751 Check the IIC Clock and Data at IC751 Check the Audio of IC751 Pins30, 31.
Page 30: Block Diagrams
SMOOTING BLOCK (Q161,R154,R155 (D113,C132,R119) Q173,R174,R177) 5VT S/W BLOCK 5.0VT FEED-BACK PHOTO COUPLER (Q163,C162,R173, Y-CAP BLOCK TIMER’H’ R176,R175,Q164) (IC102) R112,R113, C110 8V REG BLOCK C133,R114. R115.R116 (D114,IC151,R170, Y-CAP BR BL R117) C154) C111 ERROR (BK)(WH) (IC103) Combi PHILIPS VPC8007P1K's 3-20 3-21...
Page 31: Tu/If, Nicam & A2 Block Diagram
2. Tu/IF, NICAM & A2 BLOCK DIAGRAM 3. VPS BLOCK DIAGRAM Combi PHILIPS VPC8007P1K's 3-22 3-23...
Page 32: Y/C Block Diagram
4. Y/C BLOCK DIAGRAM (PB MODE) (REC MODE) Combi PHILIPS VPC8007P1K’s 3-24 3-25...
Page 33: Hi-Fi Block Diagram
EU1 A.IN 'L' EU1 A.IN 'R' EU2.A.OUT.L EU2 A.IN 'L' EU2 A.IN 'R' AV2 A.IN 'L' EU2.A.OUT.R AV2 A.IN 'R' SCART 2 NORMAL AUDIO OUT(To AVCP) MODULATOR A.OUT (To Tu) NORMAL AUDIO IN(From AVCP) AUDIO INPUT BLOCK Combi PHILIPS VPC8007P1K's 3-26 3-27...
Page 34: System Block Diagram
6. SYSTEM BLOCK DIAGRAM LD(+) LD(-) L/M CONTROL R525, R526 2fsc R524, R514, R518, R516, R589, C577, C576, L501, Q504 Combi PHILIPS VPC8007P1K's 3-28 3-29...
Page 35: Circuit Diagrams
2. Voltages are DC-measured with a digital voltmeter MODIFIED OR ALTERED WITHOUT PERMISSION IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. FROM THE PHILIPS ELECTRONICS CORPORATION. PERFORMANCE IMPROVEMENT CHANGES INTO ALL COMPONENTS SHOULD BE REPLACED ONLY THE SET IS NOT DELAYED UNTIL THE NEW SERVICE WITH TYPES IDENTICAL TO THOSE IN THE ORIGI- No power.
Page 36: Power(Smps) Circuit Diagram 2
2. POWER(SMPS) CIRCUIT DIAGRAM 2 3-32 3-33...
Page 37: Tu/If, Nicam & A2 Circuit Diagram
3. TU/IF, NICAM & A2 CIRCUIT DIAGRAM EE MODE(VIDEO) TU MODE (AUDIO) 3-34 3-35...
Page 38: A/V Circuit Diagram
4. A/V CIRCUIT DIAGRAM IC301 Pin 69, 68 are defective. PB and Recording is failed. (IC301 doesn’t operate.) IC301 Pin70 is defective. Q305 is defective. PB COLOR Signal disappear. EE, PB Screen doesn’t appear. D301or IC301 Pin 80 REC is defective. IC301 Pin 84 is defective.
Page 39: Hi-Fi Circuit Diagram
5. Hi-Fi CIRCUIT DIAGRAM IC801 Pins42, 43 aredefective. All Audio is not appear. 44 Pin is defective. Hi-Fi Audio is not appear. 3-38 3-39...
Page 40: Scart(Jack) Circuit Diagram
6. SCART(JACK) CIRCUIT DIAGRAM 3-40 3-41...
Page 41: System Circuit Diagram
7. SYSTEM CIRCUIT DIAGRAM µ-COM will not operate. SW is defective. Reset is defective. X502 is defective. Key service dead. Set dead. CLOCK SETTING will not operate. IC504 is defective. X501 is defective. RC501 is defective. R/C will not operate. VCR will not operate.
Page 42: Waveform & Voltage Sheet
WAVEFORM & VOLTAGE SHEET _ C301 Osc oscope Waveform _ C501 Waveform Photographs @ @ @ @ @ @ @ @ @ @ h e ? @ @ ? h e ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h e ? @ @ ? h e ? @ ( M e ? I ' @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g ? @ @ @ @ @ @ @ h e W 2 @ 6 X ? f W 2 @ 6 X ? e ? @ @ @ f ? @ @ @ e ? W 2 @ @ @ 6 X g ? @ @ ? @ @ f ? W 2 @ @ 6 X ? e ? @ @ ? ? W 2 @ g ? @ H ? W 2 6 K V @ @ 5 e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g ? @ @ @ @ @ @ @ h ? W &...
Page 43: Circuit Voltage Chart
• CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. I C 2 0 1 4.85 V 4.85 V 4.75 V 1.73 V 1.67 V 2.51 V 1.86 V 0.004 V...
Page 44 MODE PIN NO. 5.6 V 5.58 V 5.59 V Q301 COLECTOR 0.004 V 0.006 V BASE 0.01 V 0.013 V 0.79 V Q802 5.6 V 5.58 V 5.59 V 5.54 V 5.5 V 5.5 V EMITER 0.003 V 0.004 V 0.005 V BASE 0.7 V...
Page 45: Printed Circuit Diagrams
PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD (VCR+DVD)_SOLDER SIDE LOCATION GUIDE 3-50 3-51...
Page 46: Component Side
2. MAIN P.C.BOARD (VCR+DVD)_COMPONENT SIDE LOCATION GUIDE 3-52 3-53...
Page 47: Smps P.c.board
3. SMPS P.C.BOARD NOTES) Warning NOTES) Parts that are shaded are critical NOTES) With respect to risk of fire or NOTES) electricial shock. LOCATION GUIDE 3-54 3-55...
Page 48: Dvd Part
DVD PART ELECTRICAL TROUBLESHOOTING GUIDE 1. System operation flow Power On 1. 8032 initializes SERVO, DSP & RISC registers 2. Write RISC code to SDRAM 3. Reset RISC Show LOGO Tray Closed? Tray Close to Closed position SLED at Inner Side? SLED Moves to Inner Position 1.
Page 49: System Test Flow
2. SYSTEM Test flow TEST Check the AC Voltage Replace power PCBA or Power PCBA(110V or 220V) AC transformer. Switch on the Power PCBA Is the DC Voltage Repair or Replace Power PCBA outputs OK? (5V,1.8V,3.3V,8V,12V) Make sure the main PCBA don't short on VCCs and switch it on.
Page 50 RESET or Power On. Check connection lines between FLASH Flash Memory operates Show LOGO? & MT1389 and the FLASH access time properly? whether is suitable or not. Check connection lines between SDRAM SDRAM works properly? & MT1389 and the SDRAM is damaged. MT1389 VIDEO outputs Check the related circuit of MT1389.
Page 51 Does the SLED move Motor Driver STBY Check the connection line of to inner side when it is at Pin is High? STBY signal. outter position? Is FMSO DC Level higher Check the related circuit of than 1.4V? FMSO. SL+ and SL- output Check the amp circuit on motor properly? driver.
Page 52 Check the laser power circuit Laser turns on when LD01 or LD02 output on MT1336 and connecting to reading disc? properly? power transistor. Collector voltage of Check the related circuit on power transistor is OK? laser power transistor Check cable connection between transistor ouput and pick-up head.
Page 53 Proper signals on Check connections between Focus ON OK? A,B,C,D of MT1389 MT1389 and pick-up head. Check the FOSO connection on Check FEO signal MT1389 and motor driver. on MT1389 Check FOSO signal on MT1389 Check the related Normal TEO Signal on Track On OK? circuit on MT1389 MT1389?
Page 54 Normal Audio output Audio DAC received Check connection between MT1379 when disc playback? correct data stream? &Audio DAC. Normal Audio DAC Check the related out? circuit of Audio DAC. Check Audio filter,amplify,mute circuit. Communications between Normal IR.VFD & Front Check communication lines on IR.VFD Front pannel key &...
Page 55: Details And Waveforms On System Test And Debugging
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1. SYSTEM 27MHz CLOCK, RESET, FLASH R/W SIGNAL 1) MT1389 main clock is at 27MHz(X501) 1.0V, 27MHz FIG 1-1 2) MT1389 reset is low active 5.2VA PWR_CTL M_RESET(FRONT) RESET Time FIG 1-2 3-63...
Page 56 3) RS232 waveform during procedure(Downloading) FIG 1-3 4) Flash R/W enable signal during download(Downloading) FIG 1-4 3-64...
Page 57: Sdram Clock
2. SDRAM CLOCK DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V FIG 2-1 3. TRAY OPEN/CLOSE SIGNAL 1) Tray open/close waveform TRIN TROUT TROPEN TRCLOSE FIG 3-1 3-65...
Page 58: Sled Control Related Signal (No Disc Condition)
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) FMSO(2.0V/1.4V/1.0V) STBY(3.3V) SL+(4.7V/4.0V/2.6V) SL-(5.3V/4.0V/3.0V) FIG 4-1 5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION) FOSO(1.5V/1.4V/1.3V) F+(4.0V/3.6V/3.2V) F-(4.0V/3.6V/3.2V) FIG 5-1 3-66...
Page 59: Laser Power Control Related Signal(No Disc Condition)
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION) MDI1(0V/180mV) LD01(5.0V//3.5V) LD02(5.0V/3.6V) FIG 6-1 7. DISC TYPE JUDGEMENT WAVEFORM FIG 7-1 (DVD) 3-67...
Page 60 FIG 7-2 (DVD) FIG 7-3 (CD) 3-68...
Page 61: Focus On Waveform
FIG 7-4 (CD) 8. FOCUS ON WAVEFORM FOSO FIG 8-1 (DVD) 3-69...
Page 62: Spindle Control Waveform (No Disc Condition)
FOSO FIG 8-2 (CD) 9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION) DMSO(1.4V/1.8V) SP-(3.6V/2.4V) SP+(3.6V/4.8V) FIG 9-1 3-70...
Page 63: Tracking Control Related Signal(System Checking)
10. TRACKING CONTROL RELATED SIGNAL(System checking) TRSO FIG 10-1(DVD) TRSO FIG 10-2(CD) 3-71...
Page 64: Mt1389 Audio Optical And Coaxial Output(Spdif)
11. MT1389 AUDIO OPTICAL AND COAXIAL OUTPUT(SPDIF) FIG 11-1 12. MT1389 VIDEO OUTPUT WAVEFORM 1) 100% FIG 12-1 3-72...
Page 65: Mt1389 Audio Output To Audio Dac
2) COMPOSITE VIDEO SIGNAL FIG 12-2 13. MT1389 AUDIO OUTPUT TO AUDIO DAC FIG 13-1 3-73...
Page 66: Audio Output From Audio Dac
14. AUDIO OUTPUT FROM AUDIO DAC FIG 14-1 3-74...
Page 67: Block Diagrams
BLOCK DIAGRAMS 1. Overall Block Diagram CVBS 3-75...
Page 68: Servo Block Diagram
2. SERVO Block Diagram 3-76...
Page 69: Mpeg & Memory Block Diagram
3. MPEG & MEMORY Block Diagram 3-77...
Page 70: Video & Audio Block Diagram
4. VIDEO & AUDIO Block Diagram 3-78...
Page 72: Circuit Diagrams
CIRCUIT DIAGRAMS 1. SYSTEM CIRCUIT DIAGRAM 3-79 3-80...
Page 73: Rf & Dsp Servo Circuit Diagram
2. RF & DSP SERVO CIRCUIT DIAGRAM 3-81 3-82...
Page 74: Av/Jack Circuit Diagram
3. AV/JACK CIRCUIT DIAGRAM 3-83 3-84...
Page 75 • CIRCUIT VOLTAGE CHART MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY STOP PLAY PIN NO. PIN NO. PIN NO. PIN NO.
Page 76 SECTION 4 MECHANISM (D-37) OF VCR PART CONTENTS POSITION DRAWING OF DECK DECK MECHANISM ADJUSTMENT MECHANISM PARTS • Fixtures and tools for service ....4-12 1. Check of Mechanism Assembly Mode ..4-13 • Top View............4-1 2. Previous Preparation for • Bottom View ..........4-1 Deck Adjustment ........4-14 3.
Page 77: Top View
POSITION DRAWING OF DECK MECHANISM PARTS • Top View Order Of Dis- Ref. Posi assembled Part Fixing Type Draw- tion Parts firstly ings Disassembled 1 Drum Assembly 3 screws 2 Plate Top 2 hooks 3 Holder Assembly CST 6 chasses 4 Gear Assembly Rack F/L 1 hook 2,3,4...
Page 78 DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Drum Assembly Cable Flat (Fig. A-1-1) (S1) (S1) (S1) Cap, FPC Holder FPC Fig. A-1 Cautions in assembly of FPC 1. Disassembly of Drum Assembly (Figure A-1) 1) Separate cable flat from the Drum FPC and the Capstan Motor.
Page 79 DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Plate Top (Fig. A-2-1) (B') Holder Assembly CST (Fig. A-2-2) Arm Assembly F/L (Fig. A-2-5) Lever Assembly S/W (Fig. A-2-6) (H4) Opener Door (Fig. A-2-4) (H3) Gear Assembly Rack F/L (Fig. A-2-3) Fig. A-2...
Page 80: Disassembly Of Gear Assembly
DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM 2. Disassembly of Plate Top (Fig. A-2-1) 4. Disassembly of Gear Assembly Rack F/L (Fig. A-2-3) 1) Separate the right part while leaning back the (B) part of 1) Separate the hook (H3) while leaning ahead the hook (3) the plate top toward the arrow direction.
Page 81 DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Arm Assembly Cleaner (Fig. A-3-3) (H5) Gear Wheel (Fig. A-3-2) Base Assembly A/C Head Motor Assembly L/D (S5) (Fig. A-3-5) (Fig. A-3-1) Head F/E (C1) (Fig. A-3-4) (S4) Fig. A-3 8. Motor Assembly L/D (Fig. A-3-1) 10.
Page 82 DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Arm Assembly Tension (Fig. A-4-2) (H7) Reel T (Fig. A-4-3) Reel S (Fig. A-4-3) Spring Tension Brake Assembly T Spring Tension (Fig. A-4-1) (H8) (H6) Fig. A-4 13. Brake Assembly T (Fig. A-4-1) 15. Reel S/Reel T (Fig. A-4-3) 1) Release the spring tension from the lever spring hook 1) Disassemble the reel S/ reel T while holding it up (com- (H6).
Page 83 DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Opener Lid (Fig. A-5-2) Arm Assembly Pinch (Fig. A-5-3) Base Assembly P4 (Fig. A-5-1) (H9) Arm T/up (Fig. A-5-4) Chassis Fig. A-5 16. Base Assembly P4 (Fig. A-5-1) 18. Arm Assembly Pinch (Fig. A-5-3)) 1) Release the (A) part of the base assembly P4 from the 1) Hold the arm assembly pinch up.
Page 84 DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Suppoter Capstan (Fig. A-6-1) Belt Capstan (Fig. A-6-2) Motor Capstan (Fig. A-6-3) Washer(W1) Clutch Assembly D37 (Fig. A-6-5) (L1) (L1) Lever F/R (Fig. A-6-4) Chassis (S6) Fig. A-6 20. Supporter, Capstan (Fig. A-6-1) 22. Lever F/R (Fig. A-6-4) 1) Turn the supporter and Capstan by 90 deg.
Page 85 DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM (H10) (H11) Gear Sector Gear Cam (Fig. A-7-3) (Fig. A-7-2) (W2) Washer (W2) Brake Assembly Capstan Gear Cam Hole(B) (Fig. A-7-4) Plate Slider (L2) Gear Drive (Fig. A-7-5) (Fig. A-7-1) Gear Drive Hole(A) Lever Tension (Fig.
Page 86 DECK MECHANISM DISASSEMBLY Gear assembly P2 Hole Gear assembly P3 Hole Gear Assembly P3 (Fig. A-8-2) Gear Assembly P2 (Fig. A-8-1) (H13) (H12) Lever Tension Boss Plate slider Hole(B) (H14) Base Loading (Fig. A-8-5) Chassis Base Assembly P3 (Fig. A-8-4) Base Assembly P2 (Fig.
Page 87 DISASSEMBLY AND ASSEMBLY OF DECK MECHANISM Base Tension (Fig. A-9-1) Arm Assembly Idler Jog (Fig. A-9-2) Chassis Fig. A-9 34. Base Tension (Fig. A-9-1) 35. Arm assembly Idler Jog (Fig. A-9-2) 1) Release the (A) part of the base tension from the 1) Push both (B), (C) parts in Fig.
Page 88: Fixtures And Tools For Service
DECK MECHANISM ADJUSTMENT • Fixtures and Tools for Service 1. Cassette Torque Meter 2. Alignment tape 3. Torque gauge SRK-VHT-303(Not SVC part) Part No NTSC:DTN-0001 600g.Cm ATG Part No:D00-D006 PAL:DTN-0002 Part No:D00-D002 4. Torque gauge adaptor 5. Post height adjusting driver 6.
Page 89: Mechanism Assembly Mode Check
DECK MECHANISM ADJUSTMENT 1. Mechanism Assembly Mode Check Purpose of adjustment : To make tools normally operate by positioning tools accurately. Fixtures and tools used VCR (VCP) status Checking Position • Eject Mode • Blank Tape (empty tape) • Mechanism and Mode Switch (with cassette withdrawn) 1) Turn the VCR on and take the tape out by pressing the 4) Undo the screw fixing the deck and the main frame, and...
Page 90: Torque Measuring
DECK MECHANISM ADJUSTMENT 2. Previous Preparation for Deck Adjustment (Preparation to load the VCR (VCP) with cassette tape not inserted) 1) Take the power cord from the consent. If doing so, proceeding to the stop mode is done. In this 2) Separate the top cover and the plate assembly top.
Page 91: Guide Roller Height Adjustment
DECK MECHANISM ADJUSTMENT 4. Guide Roller Height Adjustment Purpose of adjustment : To ensure that the bottom surface of the tape can travel along with the tape lead line of the lower drum by constantly and adjusting and maintaining the height of the tape. 4-1.
Page 92 DECK MECHANISM ADJUSTMENT 5. Audio/Control (A/C) Head Adjustment Purpose of adjustment : To ensure that audio and control signals can be recorded and played according to the contract tract by constantly maintaining distance between tape and head, and tape tension between the P3 post and the P4 post.
Page 93 DECK MECHANISM ADJUSTMENT 5-2. Tape Path Check between Pinch Roller and travel it stably to ensure there is no crumbling or fold- ing of the tape. Take up Guide (Check in the Rev Mode) 1) Check the tape pass status between the pinch roller and 2) Check there is folding of the tape at the bottom or top the take-up guide.(Check there is crumpling of the tape of the take-up guide in cutting-off the REV mode...
Page 94 DECK MECHANISM ADJUSTMENT 7. Adjustment after Drum Assembly (Video Heads) Purpose of adjustment : To adjust and stabilize the height change, X-distance change, etc depending on the guide roller after assembling the drum. Fixtures and tools used Connection position VCR (VCP) status Adjustment position •...
Page 95 PROTECTION, MAINTENANCE AND CHECK OF VIDEO FUNCTION 1. Checking Points prior to Repair Following abnormal phenomena may be repaired by removal of foreign materials and oil supply. Check oiling is required at the checking set or cleaning status is complete. Determine that necessity of checking and repair the set exists after checking the using period of the set together with the user.
Page 96: Essential Check And Repair
PROTECTION, MAINTENANCE AND CHECK OF VIDEO FUNCTION 2. Essential Check and Repair 4. Tools for Check and Repair Recording density of the video is far higher than the audio. (1) Grease: Floil G-3114 (KANTO) or equivalent grease Therefore video parts are very precise so as to allow only (Green) error of 1/1000mm or so in order to maintain compatibility (2) Grease: Kanto G-754, PL-433 (Yellow)
Page 97 PROTECTION, MAINTENANCE AND CHECK OF VIDEO FUNCTION 5-2) Grease Applications (2) Regular Grease Application Apply grease to the designated application position (1) Grease Application Method every 500 hour. Apply grease by using a cloth swab or brush. Care must be exercised so that excess quantity should not be used.
Page 98 PROTECTION, MAINTENANCE AND CHECK OF VIDEO FUNCTION Lever, F/R, Base, Tension GEAR AY, P2 & P3 PL-433 LEVER, F/R BASE, TENSION Clutch Contact Part (PL-433, Yellow) Tension Arm Party Hinge Part (PL-433, Yellow) 4-22...
Page 99: Deck Mechanism
MECHANISM TROUBLESHOOTING GUIDE 1.Deck Mechanism No Auto Rewind operates. Is output of the end sensor “H”? “H”: 3.5V or less “L”: 0.7V –1V or less Is the end sensor Vcc applied at Check the Syscon power supply. Replace the end sensor. Is voltage at both ends of the Replace the LED.
Page 100 MECHANISM TROUBLESHOOTING GUIDE Auto Stop operates. (PLAY/CUE/REV) Check the assembly mode. Check the spring pinch. Does the pinch roller attached to the Capstan shaft turn in opera- Is output of the DFG, DPG Replace the drum motor. tion of the Play/Cue/Rev. normal? Does the T/UP or the supply Check the Servo, Syscon.
Page 101 MECHANISM TROUBLESHOOTING GUIDE No tape winding is done in play. Is the pinch roller attached to the Check the assembly mode? Capstan shaft in operation of play? Does the T/up reel operate? Is the Capstan belt hung? Hang the Capstan belt. Check the clutch and the idler Does the Capstan motor turn? assembly.
Page 102: Front Loading Mechanism
MECHANISM TROUBLESHOOTING GUIDE 2. Front Loading Mechanism No cassette insert is done. Does the lever assembly Is the lever assembly switch Add or replace the lever switch operate? spring normal? assembly switches spring. Does the CST IN switch Replace the F/L switch. operate normally? Is the Vcc of the main P.C.B assembly?
Page 103 MECHANISM TROUBLESHOOTING GUIDE No safe adherence of tape is done. Is cassette insert done? Does the opener lid operate? Replace the opener lid. Does the gear rack F/L operate? Replace the gear rack F/L. Does the opener door operate? Check the assembly status of the Does the arm assembly F/L operate? opener door.
Page 104 EXPLODED VIEWS 1. Front Loading Mechanism Section 4-28...
Page 105 EXPLODED VIEWS 2. Moving Mechanism Section (1) OPTIONAL PART 4-29...
Page 106 EXPLODED VIEWS 3. Moving Mechanism Section (2) 4-30...
Page 108 SECTION 5 MECHANISM OF DVD PART CONTENTS 5. Frame Assembly Up/Down ....5-4 DECK MECHANISM PARTS 6. Belt Loading........5-4 LOCATIONS 7. Gear Pulley ........5-4 8. Gear Loading ........5-4 • Top View..........5-1 9. Guide Up/Down.........5-4 • Top View(without Tray Disc) ....5-1 • Bottom View ...........5-1 10.
Page 109 DECK MECHANISM PARTS LOCATION • Top View (With Tray) Procedure Disass Fig- Parts Fixing Type embly Starting No. Holder 2 Screws, Clamp 2 Locking Tabs Clamp Assembly Disc 1, 2 Plate Clamp 1, 2, 3 Magnet Clamp 1, 2, 3, 4 Clamp Upper Tray Disc 1, 6...
Page 110 DECK MECHANISM DISASSEMBLY Fig. 5-1 Fig. 5-2 1. Holder Clamp (Fig. 5-1) 2. Tray Disc (Fig. 5-2) 1) Release 2 Screws(S1). 1) Insert and push a Driver in the emergency eject 2) Unhook 2 Locking Tabs(L1). hole(A) at the right side, or put the Driver on the 3) Lift up the Holder Clamp and then separate it from the Lever(B) of the Gear Emergency and pull the Lever(B) Base Main.
Page 111 DECK MECHANISM DISASSEMBLY Fig. 5-3 3. Base Assembly Sled (Fig. 5-3) 3-3. Gear Assembly Rack 1) Release the Scerw(S3) 1) Release 4 Screw(S2). 2) Disconnect the FFC Connector(C1) 4. Rubber Rear (Fig. 5-3) 3-1. Gear Assembly Feed 3-2. Gear Middle...
Page 112 DECK MECHANISM DISASSEMBLY Fig. 5-4 5. Frame Assembly Up/Down (Fig. 5-4) 8. Gear Loading (Fig. 5-4) 9. Guide Up/Down (Fig. 5-4) Note 1) Move the Guide Up/Down in direction of arrow(A) as Put the Base Main face down(Bottom Side) Fig.(A) 1) Release the Screw(S4) 2) Push the Locking Tab(L5) down and then lift up the 2) Unlock the Locking Tab(L3) in direction of arrow and...
Page 114 EXPLODED VIEWS 1. Deck Mechanism Exploded View 024A 024B 024A 011A 015A 015B 015C...
Page 116 MECHANICAL & ACCESSORIES PARTS LIST SET & PACKAGING PARTS (FOR PAGES 2-2 TO 2-3) 9965 000 25644 SPRING, COIL TENSION - D37 9965 000 25549 VCR MECHANISM 9965 000 25550 DVD MODULE 9965 000 19315 CAPSTAN 9965 000 25645 MOTOR, CAPSTAN F2QVB66 SANKYO 9965 000 25539 PANEL ASSEMBLY, FRONT 9965 000 25668...
Page 117 ELECTRICAL PARTS LIST POWER SUPPLY BOARD ASSEMBLY MAIN BOARD ASSEMBLY MISCELLANEOUS MISCELLANEOUS 9965 000 25560 CASE ASSEMBLY F101 4822 070 31602 FUSE 1600MA 250 V 5.2X20 T101 9965 000 25558 TRANSFORMER,SMPS[COIL] CS501 9965 000 25563 SWITCH MPU12970MLB0 ES501 9965 000 25564 HOLDER ASSY VCR DECK/MECHA END V101 9965 000 19235...
Page 118 ELECTRICAL PARTS LIST CAPACITORS L704 9965 000 18646 10M K 6X6 L5 TP C5G1 9965 000 25561 ELCAP 1000UF 6.3V M FM C945 9965 000 25562 ELCAP 3900PF D 100V 5% L705 9965 000 18646 10M K 6X6 L5 TP L7V1 9965 000 18641 100M K 6X6 L5 TP...
Page 119 ELECTRICAL PARTS LIST DIODES ZD601 9965 000 25615 UZ-5.6BSC 26MM Q163 4822 130 63766 KTA1273Y (ALTERNATIVE) ZD602 9965 000 25615 UZ-5.6BSC 26MM Q163 9965 000 25598 STB1277LY-AT TP ZD603 9965 000 25615 UZ-5.6BSC 26MM Q164 4822 130 10491 KTC3875S-GR-T1 ZD801 9965 000 25616 Z02W7.5V Q173...

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Dvp721vr/02 Dvp721vr/00 Dvp721vr/05 Dvp721vr/14

Philips DVP721VR Service Manual

Section 1 Summary

Section 3 Electrical

Overall Block Diagram

Vcr Part

Electrical Adjustment Procedures

Electrical Troubleshooting Guide

Block Diagrams

Circuit Diagrams

Printed Circuit Diagrams

DVD Part

Electrical Troubleshooting Guide

Details and Waveforms on System Test and Debugging

Block Diagrams

System Circuit Diagram

Quick Links

Chapters

Troubleshooting

Related Manuals for Philips DVP721VR

Summary of Contents for Philips DVP721VR

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Table of Contents