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HITACHI
HITACHI
SERVICE MANUAL
CAUTION :
Before servicing this chassis, it is important that the service techician reads the " Safety Precaution "
and " Product Safety Notices " in this Service Manual.
CONTENTS
SAFETY PRECAUTIONS ..............................................................................................
PRODUCT SAFETY NOTICE .........................................................................................
REMOTE CONTROL UNIT ..........................................................................................
GENERAL OPERATIONS GUIDE ...................................................................................
CIRCUIT DESCRIPTION ..............................................................................................
ADJUSTMENT INSTRUCTIONS ..................................................................................
REPLACEMENT PARTS LIST ........................................................................................
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
MARCH 2005
COLOR TELEVISION
Hitachi Consumer Products ( THAILAND ) , Ltd.
HCPT
C21-TF641S/SN/ST/SNT
C21-TF651S/SN/ST/SNT
C21-TF751S/SN/ST/SNT
C21-TF571S/SN/ST/SNT
T1 Chassis
T1-001
2
2
3
4
5
6
12
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Summary of Contents for Hitachi C21-TF641S
- Page 1 PRODUCT SAFETY NOTICE …………...…………….………...……………...…………….………… REMOTE CONTROL UNIT ……………..………...…………….……………………………………… GENERAL OPERATIONS GUIDE .………………...…………….……………………………………… CIRCUIT DESCRIPTION …………...…………….……………………………………………………… ADJUSTMENT INSTRUCTIONS ……………………...…………….………………………………… REPLACEMENT PARTS LIST …………………...…………….………………………………………… SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT. COLOR TELEVISION MARCH 2005 Hitachi Consumer Products ( THAILAND ) , Ltd.
- Page 2 TU8V TU.Sch SDA2 SDA2 SCL2 VCJ.Sch SCL2 RFAGC RFAGC TU8V SDA1 SDA1 X-RAY1 SCL1 SCL1 STBY12V 4.5M-H MICON FBT12V MCU5.7 MICON.Sch RESET RESET PONCN PONCN TU5V TU5V SCL1 SCL1 50/60 SDA1 SDA1 S-MUTE R-OUT CLKCN CLKCN L-OUT FSTBLK FSTBLK X-RAY1 X-RAY2 AV.Sch VSYNC...
- Page 3 K201 no use K202 ACL_OFF no use EXT/CIN TU8V R278 TV/YIN K277 no use C202 R204 K207 D203 K203 R207 CBIN X-RAY1 no use R216 CRIN 1W 560 R203 C203 STBY15V K204 C219 D206 10V 470 C201 R201 R202 HZS9A2 D209 D219 105C...
- Page 4 NICAM P.W.B. ASSY R-OUT TO AUDIO OUT L-OUT MPX-R TO AV-SW MPX-L 4.5M-H SW-R FROM AV-SW SW-L K138 no use FBT12V U101 L104 ENV59K05G3 SDA2 SCL2 TU8V R112 no use R102 R103 R104 L101 C102 K146 4.7K 0.01 TP12A TP11 no use K177 R101...
- Page 5 I801 C801 C802 SAA5264PS/M3/0448 no use no use R801 R811 4.7K 4.7K P20/PWM R802 R812 K803 K804 4.7K 4.7K Q804 P21/PWM0 R803 R813 2SK2541 no use 4.7K P22/PWM1 R814 R804 E801 4.7K SCL2 P23/PWM2 R805 R808 4.7K 4.7K Q805 SDA2 P24/PWM3 R806 R809...
- Page 6 SPEAKER SPEAKER E901 I901 LA42152 ALARM TEXT VCC FBT12V K222 FBT27V no use R904 10K S-MUTE C908 R905 C905 C902 50V 10 50V 1 105C Poly 2200P C903 105C 35V 47 R901 C907 R914 R903 105C no use C909 50V 1 2.7K R908 R909...
- Page 7 R370 R385 When circuit A is used, don't use circuit B. 2.2K 2.2K D351 R365 R371 R386 Also used in B HSM2838 L351 C366 C367 L352 R352 16V 100 1.8K 50V 0.47U 25mA Max C352 C395 47 CH C368 0.01 R392 0.01 C358...
- Page 8 FUNC VOL+ VOL- TV/VIDEO S701 S702 S703 S704 S705 S706 S707 S708 C701A DC701 I701 HZS7C2 C701 6.3V 47 C702 C705 K704 16V 100 R702 R703 R704 R705 R706 R707 R707A 0.01 RK702 E702 D703 R701 X701 I702 L=340mm E703 HZS7A3 M37160Mx-xxxFP K705...
- Page 9 XR01 GP1UM281QK DR01 SLR-37VC3F ER01 Title Size Number Revision Date: 12-May-2005 Sheet of File: F:\DESIGN DOCUMENT\T1\circuit diagram\21 inch flat\T1 ES4.ddb Drawn By:...
- Page 10 I501 LA78040N TX for alighment E501 K505 no use E502 3 Wire 4J C503 R504 no use R529 1/8W no use 250V 470K C502 D501 R501 35V 100 HEATER EU2A V-RAMP C510 R514 0.47 1/2W 1.5 FBT27V R503 R535 C510A C506 T501 R502...
- Page 11 For 21" MODEL E651 K651 L651 no use E502 R683 R682 R681 L663 2W 12K 2W 12K 2W 12K 100U R693 R697 1/2W 560 1/8W 18K L662 100U R692 R696 1/2W 560 1/8W 18K L661 K652 100U E202 R691 R695 1/2W 560 1/8W 18K R671...
- Page 12 EP404 YKC21-5071 AV1-IN SP901 FRONT FUNC VOL+ VOL- TV/VIDEO AAPY2211 SP701 SP702 SP703 SP704 SP705 SP706 MAINS-SW EVQ11A05R EVQ11A05R EVQ11A05R EVQ11A05R EVQ11A05R EVQ11A05R RP702 RP703 RP704 RP705 RP706 RP707 2.2K FP901 EP903 EP902 EP403 EP702 Title Size Number Revision Date: 12-May-2005 Sheet of File:...
- Page 13 YUV-SW CBIN CRIN MPX-L MPX-R K403 TU5V K401 C401 I401 16V 100 M52791FP MON-V C412 50V 0.47 TUIN TV-V C409 0.01 C413 D451 50V 10 V2IN LTIN TV-A no use K186 C414 K131 50V 10 L2IN K451 K404 * R456 D452 C415 K402...