Hitachi C21-RF80S - 21" CRT TV Service Manual
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Hitachi C21-RF80S - 21" CRT TV Service Manual

3p31 chassis
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SERVICE MANUAL
PAL/SECAM/NTSC
CAUTION:
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
OCT 2003 Digital Media System Group, Hitachi Asia Ltd.
Before servicing this chassis, it is important that the
service technician read the Important Safety Note
in this Service Manual.
COLOUR TELEVISION
Number : 0009E
SC
C21-RF80S/SN/SNT
Destination Code
O81
O51
19*
201
98*
121
3P31
Chassis
"
751
433
"

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Summary of Contents for Hitachi C21-RF80S - 21" CRT TV

  • Page 1 Before servicing this chassis, it is important that the " " service technician read the Important Safety Note in this Service Manual. SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT COLOUR TELEVISION OCT 2003 Digital Media System Group, Hitachi Asia Ltd.

  • Page 3: Technical Specification

    TECHNICAL SPECIFICATION...
  • Page 4 TECHNICAL SPECIFICATION...

  • Page 5: Chassis Block Diagram

    CHASSIS BLOCK DIAGRAM...

  • Page 6: Ic Block Diagram

    IC BLOCK DIAGRAM IC 121 (Universal HI-FI Audio Processor) TDA9859 IC 161 (BTL Audio Amplifier) TDA8944J...
  • Page 7 IC BLOCK DIAGRAM IC 401 (Vertical Deflection Booster) STV9302A...
  • Page 8 IC BLOCK DIAGRAM IC 501(Video Output Amplifier) TDA6107Q IC 601 (Power Switch) KA5Q0765RTH...
  • Page 9 IC BLOCK DIAGRAM IC 602 (Photo Transistor ) TLP621 TLP621 1:ANODE 2:CATHODE 3:EMITTER 4:COLLECTOR IC 653 & IC 181& IC 652 (Regulators) L7800 Series REFERENCE VOLTAGE INPUT SERIES OUTPUT PASS ELEMENT CURRENT GENERATOR PROTECTION ERROR REFERENCE STARTING AMPLIFIER VOLTAGE CIRCUIT THERRMAL PROTECTION...
  • Page 10 IC BLOCK DIAGRAM IC 701 ( TV Signal Processor-Teletext ) TDA93XXPS/N2/5I -10-...
  • Page 11 IC BLOCK DIAGRAM IC 861 ( Digital TV Sound Demodulator/Decoder) TDA9874AH -11-...

  • Page 12: Transistor Mark

    TRANSISTOR MARK N P N P N P N P N N P N P N P N P N P N P N P N N P N P N P P N P N P N P N P C1651C I N P U T I N P U T...
  • Page 13 MAIN PCB TOP LAYER -13-...
  • Page 14 MAIN PCB BOTTOM LAYER -14-...
  • Page 15 AV TERMINALS PCB LAYOUT Side AV Terminals PCB Layout Control Panel PCB Layout Remote Control Unit PCB Layout -15-...

  • Page 16: Service Adjustments

    SERVICE ADJUSTMENTS ALIGNMENT INSTRUCTION (3P31) Before Servicing The TV Set The main power is 100~240V 50/60HZ . Please be careful when you are servicing. Don t short any two soldering points, which should not be shorted and don t touch any components, which should not be touched.

  • Page 17: Focus Adjustment

    SERVICE ADJUSTMENTS General Adjustment Enter factory mode CH I/II SOUND MODE RECALL Press keys on remote control unit to enter factory mode. Press 0-9 numeric keys to enter factory menu. Select the item using the keys and adjust using the keys.
  • Page 18 SERVICE ADJUSTMENTS Receive 60HZ cross hatch pattern. Press PIC. MODE key to set picture in STANDARD mode. Adjust VSLOPE to obtain half of the crosshatch. Adjust VSCOR to obtain picture s best vertical pin cushion. Adjust VSHIFT to obtain picture s vertical center at the center of CRT screen in factory mode.
  • Page 19 SERVICE ADJUSTMENTS Service items This appendix shows information about service items that are available. The table lists all possible available service items. CH I/II 1.Press SOUND MODE RECALL keys on remote control unit to enter factory mode. 2.Press the Direct key buttons on the remote control unit specified in the table to access directly into the respective items when in factory mode.
  • Page 20 SERVICE ADJUSTMENTS -20-...
  • Page 21 SERVICE ADJUSTMENTS -21-...
  • Page 22 SERVICE ADJUSTMENTS -22-...

  • Page 23: Purity And Convergence Adjustment

    PURITY AND CONVERGENCE ADJUSTMENT COLOUR PURITY ADJUSTMENT (1) Before colour purity adjustment,warm up the TV set over 15 minutes and fully degauss. (2) Receive pure white signal in AV status and press PIC.MODE key to set picture in DYNAMIC mode. (3) Loosen the clamp screw of the deflection yoke and pull the deflection yoke towards the purity magnet.

  • Page 24: Operation Instructions

    OPERATION INSTRUCTIONS SETUP Insert The Batteries Remove the battery cover by pressing it and sliding it down. Insert the two 1.5V (AAA size) batteries making sure the polarity (+ or -) of the batteries matches the polarity marks inside the unit. Replace the battery cover by sliding it in until you hear a click sound.

  • Page 25: Control Location

    CONTROL LOCATION FUNCTIONAL PARTS Front View of TV Set 1. Power Switch 2. Power Indicator 3. Remote Sensor 4. Side Panel 5. Speakers 6. Program Down / Up Button 7. Volume Down / Up Button 8. Sleep Button 9. Menu Button 10.

  • Page 26: Input And Output Terminals

    INPUT AND OUTPUT TERMINALS Rear View of TV Set 1. AV OUT Terminals 2. AV IN 1 Terminals 3. YCbCr IN Terminals(YUV) 4. S-Video In Terminal 5. Antenna Input Socket (75 Ohm) 6. AC Power Cord YCbCr IN AV OUT AV IN 1 VIDEO VIDEO...
  • Page 27 REMOTE CONTROLLER FUNCTIONS Remote Control Unit POWER ON / STANDBY button Press this button to switch on the TV when at standby mode or vice versa. Press any number 0-9, buttons will also switch on the TV from standby mode. SLEEP button SOUND SLEEP...

  • Page 28: Remote Controller Functions

    REMOTE CONTROLLER FUNCTIONS Remote Control Unit MUTE button Press once to mute the sound. Press again to restore the sound volume. RECALL button Press this button to display the settings on the screen. (e.g. Channel number, system) SOUND SOUND MODE button SLEEP SYS.
  • Page 29 REMOTE CONTROLLER FUNCTIONS Remote Control Unit MENU button Press this button to enter the menu screens for various optional adjustable settings. TV/AV button Press this button to switch between TV broadcasts and AV input programs. YCbCr S-VIDEO SOUND SLEEP SYS. CH I/II SOUND MENU button Press this button to enter into the [SOUND]...

  • Page 30: Teletext Operations

    REMOTE CONTROLLER FUNCTIONS TELETEXT OPERATIONS For models with Teletext function only. This page shows the function of the buttons on the remote control unit when in Teletext mode. TV/TEXT button Press this button to enter Teletext mode. Press this button the second time to superimpose the teletext page over the TV SOUND programme.

  • Page 31: Sub Title Button

    REMOTE CONTROLLER FUNCTIONS HOLD button Press this button to hold the Teletext page on display to prevent the page from changing. Press again to release the hold state. SOUND SLEEP SYS. CH I/II SUB PAGE button Some Teletext pages may contain several sub-pages which are automatically paged RECALL in a certain cycle by the TV station.

  • Page 32: Menu Screens

    ON SCREEN DISPLAYS SOUND SLEEP SYS. CH I/II RECALL MENU SCREENS SOUND MODE PIC. AV/TV MODE This TV set allows you to adjust any settings by selecting from the menu screens. --/--- --/--- LANG. SOUND PIC. SETUP TUNE U.N.L REVEAL HOLD SUBPAGE Press the...

  • Page 33: On-Screen Displays

    ON SCREEN DISPLAYS This menu allows you to adjust the sound settings according to your [SOUND] menu preference. Press the MENU button 2 times or press SOUND button directly. SOUND VOLUME BASS TREBLE BALANCE Select the desired item using the buttons.
  • Page 34 ON SCREEN DISPLAYS This menu allows you to adjust the various setup functions. [SETUP] menu MENU Press the button 4 times or press SETUP button SETUP directly. LANGUAGE ENGLISH BACKGROUND CHILD LOCK Select the desired item using the buttons. Use the buttons to adjust the settings.

  • Page 35: Exchange] Menu

    ON SCREEN DISPLAYS This menu allows you to arrange channel numbers by [EXCHANGE] exchanging between 2 preset channel numbers. menu Press the MENU button 6 times. EXCHANGE PROGRAM Select the first PROGRAM item using the buttons. PROGRAM EXCHANGE Use the buttons to select the channel number you want to exchange from.

  • Page 36: Mechanical Assembly

    MECHANICAL ASSEMBLY REAR COVER REMOVAL 1.Remove screws from the rear cover as shown in Figure 1. 2.Remove the rear cover. CHASSIS REMOVAL 1.Remove the rear cover (refer to REAR COVER REMOVAL instructions ). 2.Discharge the picture tube anode (2nd anode lead )to the dag coating (picture tube grounding lead). 3.Disconnect the degaussing coil (KE),picture tube socket, deflection yoke connector (KDY),speaker connectors (KL and KR)and 2nd anode lead .

  • Page 37: Replacement Parts List

    REPLACEMENT PARTS LIST -37-...

  • Page 38: Electrical Parts List

    ELECTRICAL PARTS LIST FOR REFERENCE ONLY The components shown in page 38-53 serve as a reference. It is not meant for ordering of components for servicing purposes. Do not quote any components from these lists. Circuit N o Part No Description 013PAST001A0M MAIN ASSEMBLY (AUTO INSERT)
  • Page 39 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description R380 YZ4100AB1030T0 CARBON FILM RESISTOR 10K OHM 1/16-1/6W +/-5% (TAPE TYPE) R645 YZ4100AB1030T0 CARBON FILM RESISTOR 10K OHM 1/16-1/6W +/-5% (TAPE TYPE) R646 YZ4100AB1030T0 CARBON FILM RESISTOR 10K OHM 1/16-1/6W +/-5% (TAPE TYPE) R648 YZ4100AB1030T0 CARBON FILM RESISTOR 10K OHM 1/16-1/6W +/-5% (TAPE TYPE)
  • Page 40 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description R728 YZ4100AB3320T0 CARBON FILM RESISTOR 3.3K OHM 1/16-1/6W+/-5% (TAPE TYPE) R735 YZ4100AB3320T0 CARBON FILM RESISTOR 3.3K OHM 1/16-1/6W+/-5% (TAPE TYPE) R737 YZ4100AB3320T0 CARBON FILM RESISTOR 3.3K OHM 1/16-1/6W+/-5% (TAPE TYPE) R741 YZ4100AB3320T0 CARBON FILM RESISTOR 3.3K OHM 1/16-1/6W+/-5% (TAPE TYPE)
  • Page 41 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description C721 YZ4300AF101CT0 CERAMIC CAPACITOR 100PF 50V +/-5% (TAPETYPE) C722 YZ4300AF101CT0 CERAMIC CAPACITOR 100PF 50V +/-5% (TAPETYPE) C879 YZ4300AF101CT0 CERAMIC CAPACITOR 100PF 50V +/-5% (TAPETYPE) C880 YZ4300AF101CT0 CERAMIC CAPACITOR 100PF 50V +/-5% (TAPETYPE) C308 YZ4300AF102CT0 CERAMIC CAPACITOR 0.001uF 50V +/-5% (TAPE TYPE)
  • Page 42 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description C472 YZ4300AM471DT0 CERAMIC CAPACITOR 470PF 500V +/-10% (TAPE TYPE) C473 YZ4300AM471DT0 CERAMIC CAPACITOR 470PF 500V +/-10% (TAPE TYPE) C476 YZ4300AM471DT0 CERAMIC CAPACITOR 470PF 500V +/-10% (TAPE TYPE) C603 YZ4300AR102ET0 CERAMIC CAPACITOR 0.001uF 1KV +/-20%(TAPE TYPE ) C604 YZ4300AR102ET0...
  • Page 43 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description C805 YZ4300BF105ET0 ELECTROLYTIC CAPACITOR 1uF 50V +/-20% (TAPE TYPE) C809 YZ4300BF105ET0 ELECTROLYTIC CAPACITOR 1uF 50V +/-20% (TAPE TYPE) C810 YZ4300BF105ET0 ELECTROLYTIC CAPACITOR 1uF 50V +/-20% (TAPE TYPE) C843 YZ4300BF105ET0 ELECTROLYTIC CAPACITOR 1uF 50V +/-20% (TAPE TYPE) C845 YZ4300BF105ET0...
  • Page 44 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description C372 YZ4300MG223DT0 MYLAR CAPACITOR 0.022uF 100V +/-10% (TAPE TYPE) C373 YZ4300MG223DT0 MYLAR CAPACITOR 0.022uF 100V +/-10% (TAPE TYPE) C374 YZ4300MG223DT0 MYLAR CAPACITOR 0.022uF 100V +/-10% (TAPE TYPE) C403 YZ4300MG333DT0 MYLAR CAPACITOR 0.033uF 100V +/-10% (TAPE TYPE) C408 YZ4300MG333DT0...
  • Page 45 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description Q172 YZ4600A10150T0 TRANSISTOR 2SA1015Y\2PA1015 (TAPE TYPE) Q171 YZ4600C18150T0 TRANSISTOR 2SC1815Y/2PC1815 (TAPE TYPE) Q173 YZ4600C18150T0 TRANSISTOR 2SC1815Y/2PC1815 (TAPE TYPE) Q301 YZ4600C18150T0 TRANSISTOR 2SC1815Y/2PC1815 (TAPE TYPE) Q351 YZ4600C18150T0 TRANSISTOR 2SC1815Y/2PC1815 (TAPE TYPE) Q352 YZ4600C18150T0 TRANSISTOR 2SC1815Y/2PC1815 (TAPE TYPE)
  • Page 46 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description W233 YZ5900G4010600 COPPER JUMPER 0.6MM DIA. L=40mm W234 YZ5900G4010600 COPPER JUMPER 0.6MM DIA. L=40mm W241 YZ5900G4010600 COPPER JUMPER 0.6MM DIA. L=40mm W301 YZ5900G4010600 COPPER JUMPER 0.6MM DIA. L=40mm W302 YZ5900G4010600 COPPER JUMPER 0.6MM DIA.
  • Page 47 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description W543 YZ5900G4010600 COPPER JUMPER 0.6MM DIA. L=40mm W544 YZ5900G4010600 COPPER JUMPER 0.6MM DIA. L=40mm W545 YZ5900G4010600 COPPER JUMPER 0.6MM DIA. L=40mm W546 YZ5900G4010600 COPPER JUMPER 0.6MM DIA. L=40mm W547 YZ5900G4010600 COPPER JUMPER 0.6MM DIA.
  • Page 48 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit N o Part No Description R473 YZ4100DG010001 METAL OXIDE FILM RESISTOR 1 OHM 1W 5% R612 YZ4100DG047001 METAL OXIDE FILM RESISTOR 4.7 OHM 1W +/-5% R466 YZ4100DG102001 METAL OXIDE FILM RESISTOR 1K OHM 1W+/-5% R467 YZ4100DG103001 METAL OXIDE FILM RESISTOR 10K OHM 1W+/-5%...
  • Page 49 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description IC861 YZ4706D9874044 I.C. TDA9874A PHILIPS (DIGITAL TV SOUNDDEMODULATOR/DECODER) QFP44 PACKAGE IC181 YZ4707L7805003 I.C. L7805CV IC653 YZ4707L7805003 I.C. L7805CV IC652 YZ4707L7808003 I.C. L7808CV SGS (STABILIZING) IC401 YZ4707S9302007 I.C. STV9302A SGS (VERTICAL DEFLECTION SYSTEM W/FLYBACK GENERATOR) IC703 YZ4709KA33VT02 I.C.
  • Page 50 ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Description YZ4100AD1810T0 CARBON FILM RESISTOR 180 OHM 1/4W +/-5% (TAPE TYPE) YZ4100AD2210T0 CARBON FILM RESISTOR 220 OHM 1/4W +/-5% (TAPE TYPE) YZ4100AD3310T0 CARBON FILM RESISTOR 330 OHM 1/4W +/-5% (TAPE TYPE) YZ4100AD4710T0 CARBON FILM RESISTOR 470 OHM 1/4W +/-5% (TAPE TYPE) YZ4100AD4720T0...

  • Page 51: Electrical Parts List

    LINEAR COIL 29uH 10mm FOR 14"-21" TV H602 YZ480008156000 DEGAUSSING COIL FOR 21" TV L=1560mm T=50 220VAC YZ500351010B02 21" SEG-HITACHI COLOR PICTURE T UBE A51JSY63X13(C) (NORTH) DIA. 29.1 mm T450 YZ510604100000 HORIZONTAL DRIVE TRANSFORME R FOR LOW VOLTAGE T601 YZ511506400103...

  • Page 52: Mechanical Parts List

    MECHANICAL PARTS LIST FOR REFERENCE ONLY Part No Description AP0021N61000 ALL MECHANICAL PARTS YZ030121N61001 POLYFOAM END CAP. R & L (TOP & BOTTOM) YZ40400005500 POLYBAG (PEARL SPONGE) (PO) W/PE W105 XH100cm YZ40409014003 POLYBAG 9" X 14" X 0.04 MM (PO) W/PE YZ100521990001 JACK PLATE BRACKET - BLACK (HIPS) YZ100721N61001...
  • Page 53 INSTRUCTION BOOKLET "HITACHI" 3P31 RC09ENG YZ90200033701 NAME PLATE - ALUMINIUM "HITACHI" BRIGHTSILVER (SMALL) YZ132082180001 0.0285 ADHESIVED TAPE (TRANSPARENT) (50M/RL) YZ152382180001 STAPLE (SILVER) RC093P313700 HANDSET - 37 KEYS #877C (3P31) OVERSEAS YZ0801UM4AAA07 BATTERY UM-4AAA (DESAY) YZ0806RC090001 HANDSET - 37 KEYS FOR (3P31) #877C "HITACHI" -53-...

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