Hitachi C21-RF80S Service Manual
Hitachi C21-RF80S - 21" CRT TV Manual
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Hitachi C21-RF80S manual content summary:
- Hitachi C21-RF80S | Service Manual - Page 1
C21-RF80S/SN/SNT Destination Code O81 O51 751 19* 201 433 98* 121 3P31 Chassis CAUTION: 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 - Hitachi C21-RF80S | Service Manual - Page 2
- Hitachi C21-RF80S | Service Manual - Page 3
TECHNICAL SPECIFICATION -3- - Hitachi C21-RF80S | Service Manual - Page 4
TECHNICAL SPECIFICATION -4- - Hitachi C21-RF80S | Service Manual - Page 5
E CHASSIS BLOCK DIAGRAM -5- - Hitachi C21-RF80S | Service Manual - Page 6
IC BLOCK DIAGRAM IC 121 (Universal HI-FI Audio Processor) TDA9859 IC 161 (BTL Audio Amplifier) TDA8944J -6- - Hitachi C21-RF80S | Service Manual - Page 7
IC BLOCK DIAGRAM IC 401 (Vertical Deflection Booster) STV9302A -7- - Hitachi C21-RF80S | Service Manual - Page 8
IC BLOCK DIAGRAM IC 501(Video Output Amplifier) TDA6107Q 7 IC 601 (Power Switch) KA5Q0765RTH -8- - Hitachi C21-RF80S | Service Manual - Page 9
IC BLOCK DIAGRAM IC 602 (Photo Transistor ) TLP621 TLP621 1 4 2 3 1:ANODE 2:CATHODE 3:EMITTER 4:COLLECTOR IC 653 & IC 181& IC 652 (Regulators) L7800 Series INPUT 1 REFERENCE VOLTAGE CURRENT GENERATOR SERIES PASS ELEMENT OUTPUT 2 SOA PROTECTION STARTING CIRCUIT REFERENCE VOLTAGE - Hitachi C21-RF80S | Service Manual - Page 10
IC BLOCK DIAGRAM IC 701 ( TV Signal Processor-Teletext ) TDA93XXPS/N2/5I -10- - Hitachi C21-RF80S | Service Manual - Page 11
IC BLOCK DIAGRAM IC 861 (Digital TV Sound Demodulator/Decoder) TDA9874AH -11- - Hitachi C21-RF80S | Service Manual - Page 12
TRANSISTOR MARK PNP PNP NPN NPN NPN PNP NPN C1815 B421 C2703 C2482 C2230 A1013 A966 EC B EC B EC B EC B EC B PNP PNP NPN PNP EC B NPN EC B NPN C2717 C2216 C2120 B420 B774 A1015 EC B EC B EC B ECB B EC B EC L7808 INPUT OUTPUT GND C1651C BC E L7812 INPUT OUTPUT GND - Hitachi C21-RF80S | Service Manual - Page 13
MAIN PCB TOP LAYER -13- - Hitachi C21-RF80S | Service Manual - Page 14
MAIN PCB BOTTOM LAYER -14- - Hitachi C21-RF80S | Service Manual - Page 15
AV TERMINALS PCB LAYOUT Side AV Terminals PCB Layout Control Panel PCB Layout Remote Control Unit PCB Layout -15- - Hitachi C21-RF80S | Service Manual - Page 16
and don t touch any components, which should not be touched. Please disconnect the power plug form the wall outlet before servicing. For safety reasons, all components replaced should be identical with BOM. Before alignment, ensure the TV set has heat run for at least 30 minutes and degauss the CRT - Hitachi C21-RF80S | Service Manual - Page 17
SERVICE ADJUSTMENTS General Adjustment Enter factory mode Press SOUND MODE , RECALL , CH I/II keys on remote control unit to enter factory mode. Press 0-9 numeric keys to enter factory menu. Select the item using the P+ and P - keys and adjust using the + and Press - Hitachi C21-RF80S | Service Manual - Page 18
SERVICE ) Normally, this TV can auto adjust white balance, but for some CRT maybe need to adjust white balance manually. Set BRIGHTNESS and CONTRAST negative terminal to GND. Enter the AGC item in factory mode by the REMOTE CONTROL. Method: Press key SOUND MODE , RECALL , CH I/II to enter factory - Hitachi C21-RF80S | Service Manual - Page 19
items that are available. The table lists all possible available service items. 1.Press SOUND MODE , RECALL , CH I/II 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 - Hitachi C21-RF80S | Service Manual - Page 20
SERVICE ADJUSTMENTS -20- - Hitachi C21-RF80S | Service Manual - Page 21
SERVICE ADJUSTMENTS -21- - Hitachi C21-RF80S | Service Manual - Page 22
SERVICE ADJUSTMENTS -22- - Hitachi C21-RF80S | Service Manual - Page 23
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) - Hitachi C21-RF80S | Service Manual - Page 24
unit for a long time. Precautions when using the remote control unit Do not drop the remote control unit. Do not subject the remote control unit to physical shocks. Keep the remote control unit dry. Wetting it may cause the unit to malfunction. Replace the batteries with new ones when operation of - Hitachi C21-RF80S | Service Manual - Page 25
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. Mute Button 11. TV/AV Button 8 9 6 7 10 11 To turn the TV power ON 5 3 21 - Hitachi C21-RF80S | Service Manual - Page 26
. Precautions when connecting to other equipment When using external equipment with this TV set, please read the instruction manual of the external equipment. Switch off all power supplies to the equipment and TV set before connection. Always ensure that the input and output terminals are correctly - Hitachi C21-RF80S | Service Manual - Page 27
CONTROLLER FUNCTIONS Remote Control Unit 1234 SOUND SLEEP SYS. CH I/II 123 RECALL 456 SOUND MODE 789 PIC. MODE TV/AV 0 --/--- LANG. SOUND REVEAL PIC. U.N.L SETUP TUNE HOLD SUBPAGE TV/TEXT MIX CLOCK GAME LST-CH TYPE SUBTITLE CANCEL P 5 6 MENU 6 INDEX 5 P CLE-9XX 1 POWER - Hitachi C21-RF80S | Service Manual - Page 28
REMOTE CONTROLLER FUNCTIONS Remote Control Unit 7 MUTE button Press once to mute the sound. Press 7 123 mode. USER SPEECH RECALL 8 456 12 SOUND MODE 9 789 MUSIC THEATER PIC. MODE TV/AV 10 0 --/--- 11 Sound Mode Description USER User preset sound mode. LANG. SPEECH Low treble - Hitachi C21-RF80S | Service Manual - Page 29
REMOTE CONTROLLER FUNCTIONS Remote Control Unit SOUND SLEEP SYS. CH I/II 123 RECALL 456 SOUND MODE 789 PIC. MODE TV/AV 14 0 --/--- LANG. 16 17 15 19 SOUND REVEAL PIC. U.N.L SETUP TUNE HOLD SUBPAGE TV/TEXT MIX CLOCK GAME LST-CH TYPE SUBTITLE CANCEL P 18 21 20 MENU INDEX 13 P - Hitachi C21-RF80S | Service Manual - Page 30
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. 1 TV PIC. SETUP TUNE REVEAL U.N.L HOLD SUBPAGE 4 COLOUR buttons 1 TV/TEXT CLOCK GAME LST-CH MIX TYPE SUBTITLE - Hitachi C21-RF80S | Service Manual - Page 31
REMOTE CONTROLLER FUNCTIONS 9 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 10 SUB PAGE button 123 RECALL 456 SOUND MODE 789 PIC. MODE TV button Some TV channels transmit - Hitachi C21-RF80S | Service Manual - Page 32
the settings. 4 Press the MENU button 6 times or press PIC. button to exit to TV mode. Selected Items Functions BRIGHTNESS Adjust brightness level. CONTRAST Adjust contrast level. COLOUR Adjust colour intensity. SHARPNESS HUE*2 Adjust sharpness level. Adjust the hue towards red(+)or green - Hitachi C21-RF80S | Service Manual - Page 33
the channel number for REMIND TIME activation. NOTE *1 All the timer functions will only be effective if the power of the TV set is switched off using the remote control unit. If the power is switched off by the power button on the TV set or a power failure occurs, the timer will be reset. -33- - Hitachi C21-RF80S | Service Manual - Page 34
preset receivable broadcast stations. NOTE *1 If CHILD LOCK is set to ON, you can access the TV by remote control unit only. You may keep the remote control unit out of reach to prevent children from any unauthorized access to the TV. *2 In AV mode, only COLOUR SYS will be displayed in [TUNE] menu - Hitachi C21-RF80S | Service Manual - Page 35
number you want to exchange to. 4 Select EXCHANGE and press the + or buttons to activate the exchange command. 5 Press the MENU button to exit to TV mode. NOTE *1 [EXCHANGE] menu is not available in AV mode. -35- - Hitachi C21-RF80S | Service Manual - Page 36
it out. PICTURE TUBE REMOVAL 1.Remove the chassis (refer to CHASSIS REMOVAL instructions). 2.Place the front frame face down on a soft surface. 3.Remove lift the picture tube out of the front frame. 4.Install a replacement picture tube & properly install the degaussing coil and picture tube grounding - Hitachi C21-RF80S | Service Manual - Page 37
REPLACEMENT PARTS LIST ! -37- - Hitachi C21-RF80S | Service Manual - Page 38
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 013PAST001A0M R309 YZ4100AB1000T0 R801 YZ4100AB1000T0 R829 YZ4100AB1000T0 R861 YZ4100AB1000T0 - Hitachi C21-RF80S | Service Manual - Page 39
ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No R380 YZ4100AB1030T0 R645 YZ4100AB1030T0 R646 YZ4100AB1030T0 R648 YZ4100AB1030T0 R704 YZ4100AB1030T0 R705 YZ4100AB1030T0 R706 YZ4100AB1030T0 R707 YZ4100AB1030T0 R729 YZ4100AB1030T0 R812 YZ4100AB1030T0 R813 YZ4100AB1030T0 R833 - Hitachi C21-RF80S | Service Manual - Page 40
ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No R728 YZ4100AB3320T0 R735 YZ4100AB3320T0 R737 YZ4100AB3320T0 R741 YZ4100AB3320T0 R742 YZ4100AB3320T0 R834 YZ4100AB3320T0 R845 YZ4100AB3320T0 R846 YZ4100AB3320T0 R322 YZ4100AB3910T0 R385 YZ4100AB3930T0 R411 YZ4100AB3930T0 R355 - Hitachi C21-RF80S | Service Manual - Page 41
ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No C721 YZ4300AF101CT0 C722 YZ4300AF101CT0 C879 YZ4300AF101CT0 C880 YZ4300AF101CT0 C308 YZ4300AF102CT0 C309 YZ4300AF102CT0 C310 YZ4300AF102CT0 C311 YZ4300AF102CT0 C315 YZ4300AF102CT0 C366 YZ4300AF102CT0 C401 YZ4300AF102CT0 C402 - Hitachi C21-RF80S | Service Manual - Page 42
ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No C472 YZ4300AM471DT0 C473 YZ4300AM471DT0 C476 YZ4300AM471DT0 C603 YZ4300AR102ET0 C604 YZ4300AR102ET0 C605 YZ4300AR102ET0 C606 YZ4300AR102ET0 C643 YZ4300AR471DT0 C644 YZ4300AR471DT0 C645 YZ4300AR471DT0 C303 YZ4300BC106ET0 C307 - Hitachi C21-RF80S | Service Manual - Page 43
ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No C805 YZ4300BF105ET0 C809 YZ4300BF105ET0 C810 YZ4300BF105ET0 C843 YZ4300BF105ET0 C845 YZ4300BF105ET0 C863 YZ4300BF105ET0 C324 YZ4300BF225ET0 C328 YZ4300BF225ET0 C339 YZ4300BF225ET0 C755 YZ4300BF225ET0 C873 YZ4300BF225ET0 C874 - Hitachi C21-RF80S | Service Manual - Page 44
ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No C372 YZ4300MG223DT0 C373 YZ4300MG223DT0 C374 YZ4300MG223DT0 C403 YZ4300MG333DT0 C408 YZ4300MG333DT0 C618 YZ4300MG333DT0 C660 YZ4300MG333DT0 C130 YZ4300MG682DT0 C131 YZ4300MG682DT0 C127 YZ4300MG683DT0 C134 YZ4300MG683DT0 D172 - Hitachi C21-RF80S | Service Manual - Page 45
ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No Q172 YZ4600A10150T0 Q171 YZ4600C18150T0 Q173 YZ4600C18150T0 Q301 YZ4600C18150T0 Q351 YZ4600C18150T0 Q352 YZ4600C18150T0 Q353 YZ4600C18150T0 Q354 YZ4600C18150T0 Q640 YZ4600C18150T0 Q702 YZ4600C18150T0 Q812 YZ4600C18150T0 Q813 - Hitachi C21-RF80S | Service Manual - Page 46
ELECTRICAL PARTS LIST FOR REFERENCE ONLY Circuit No Part No W233 YZ5900G4010600 W234 YZ5900G4010600 W241 YZ5900G4010600 W301 YZ5900G4010600 W302 YZ5900G4010600 W311 YZ5900G4010600 W312 YZ5900G4010600 W321 YZ5900G4010600 W331 YZ5900G4010600 W332 YZ5900G4010600 W411 YZ5900G4010600 W412 - Hitachi C21-RF80S | Service Manual - Page 47
0.6MM DIA. L=40mm COPPER JUMPER 0.6MM DIA. L=40mm COPPER JUMPER 0.6MM DIA. L=40mm COPPER JUMPER 0.6MM DIA. L=40mm COPPER JUMPER 0.6MM DIA. L=40mm MAIN ASSEMBLY (MANUAL INSERT) METAL OXIDE FILM RESISTOR 1 OHM 1W 5% -47- - Hitachi C21-RF80S | Service Manual - Page 48
BUS SERIAL EEPROM DIP PACKAGE I.C. TLP621 TOSHIBA (PHOTO TRANSISTOR) I.C.TDA8944J PHILIPS(BRIDGE TIED LOAD(BTL)AUDIO AMPLIFIER 2X7W STEREO)DBS17 I.C TDA9367PS-N2-5 PHILIPS FULL SYSTEM TV SIGNAL PROCESSOR-TELE.DECODER+QSS I.C. TDA9859 PHILIPS (UNIVERSAL HI-FI AUDIO PROCESSOR FOR - Hitachi C21-RF80S | Service Manual - Page 49
TV ) (TAPE TYPE) I.C. KA5Q0765RTH-YDTU FAIRCHILD (FAIRCHILD POWER SWITCH) I.C. KA431Z FAIRCHILD (ADJUSTABLE REGULATOR) TO-92 DIA. L=40mm CRT BOARD ASSEMBLY FOR 3P31 (MANUAL INSERT) CERAMIC CAPACITOR 0.001uF 2KV +/-10% -2-108 E/E 15-18KV FOR 21"-29" CONTROL ASSEMBLY FOR 3P31 CARBON FILM RESISTOR 1.5K OHM - Hitachi C21-RF80S | Service Manual - Page 50
WHITE VERTICAL TYPE Y/C SOCKET SPLIT COVER TYPE FOR 5N AV I/O ASSEMBLY RCA JACK/YC/YUV FOR 3P31 (MANUAL INSERT) CARBON FILM RESISTOR 100 OHM 1/4W +/-5% (TAPE TYPE) CERAMIC CAPACITOR 0.01uF 50V +80-20% 16V +/-20%(TAPE TYPE) INFRARED RECEIVER MODULE HS0038B 38KHz FOR PCM REMOTE CONTROL SYSTEMS -50- - Hitachi C21-RF80S | Service Manual - Page 51
COIL 29uH 10mm FOR 14"-21" TV DEGAUSSING COIL FOR 21" TV L=1560mm T=50 220VAC 21" SEG-HITACHI COLOR PICTURE T UBE A51JSY63X13(C) 21" TV) HOUSING 05 + 400mm WIRE X 4 1=RED 3=BLUE4=YELLOW 5=GREEN UL1015 AWG22 COPPER JUMPER 0.6MM DIA. L=40mm NON COMMON PARTS FOR 3P31 MAIN POWER SWITCH SDDF-3-03 W/LOCK - Hitachi C21-RF80S | Service Manual - Page 52
3 X 14 X 1.2 MM 4 RUBBER WASHER - DIA. 6 X 22 X 2 MM CABINET COLOUR MATCH - METAL SILVER GREY #MSG001 1 FORNT CABINET - METAL SILVER GREY #MSG001 (3P31) ENG 1 BACK CABINET - DARK GREY #DG001 1 CONTROL KEY KNOB - METAL SILVER GREY #MSG001 1 POWER KNOB METAL SILVER GREY #MSG001 1 INSULATOR RING - DIA - Hitachi C21-RF80S | Service Manual - Page 53
KA 2.6 X 8 (BLACK) PRINTING PARTS 1 CARTON BOX (C21-RF80) ENG 1 BACK LABEL (C21-RF80) ENG 3 QC PASSED LABEL (WHITE) 1 QC PASSED LABEL (GOLD) 2 SERIAL NO.LABEL 1 INSTRUCTION BOOKLET "HITACHI" 3P31 RC09ENG 1 NAME PLATE - ALUMINIUM "HITACHI" BRIGHTSILVER (SMALL) 0.0285 ADHESIVED TAPE (TRANSPARENT) (50M - Hitachi C21-RF80S | Service Manual - Page 54
- Hitachi C21-RF80S | Service Manual - Page 55
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SERVICE
MANUAL
PAL/SECAM/NTSC
CAUTION:
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.
SC
Number : 0009E
3P31
Chassis
"
"
C21-RF80S/SN/SNT
Destination Code
O81
O51
751
19*
201
433
98*
121