Hitachi C21-TF641S, C21-TF641SN, C21-TF641ST, C21-TF641SNT, C21-TF651S 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 ...………………...…………….……………………………………………

…

2

PRODUCT SAFETY NOTICE …………...…………….………...……………...…………….………

…

2

REMOTE CONTROL UNIT ……………..………...…………….……………………………………

…

3

GENERAL OPERATIONS GUIDE .………………...…………….……………………………………

…

4

CIRCUIT DESCRIPTION …………...…………….……………………………………………………

…

5

ADJUSTMENT INSTRUCTIONS ……………………...…………….…………………………………

6

REPLACEMENT PARTS LIST …………………...…………….………………………………………

…

12

MARCH 2005 Hitachi Consumer Products ( THAILAND ) , Ltd.

HITACHI

SERVICE MANUAL

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

COLOR TELEVISION

HCPT

T1 Chassis

C21-TF641S/SN/ST/SNT
C21-TF651S/SN/ST/SNT
C21-TF751S/SN/ST/SNT
C21-TF571S/SN/ST/SNT

T1-001

HITACHI

1 2 3 4 5 6 78

A

B

C

D

8

7654321

D

C

B

A

Title

Number RevisionSize

A3

Date: 12-May-2005 Sheet of
File: F:\DESIGN DOCUMENT\T1\circuit diagram\21 inch flat\T1 ES4.ddbDrawn By:

MITSUBISHI ELECTRIC ENGINEERING
PWB-MAIN TOP

B

8V

TU5V

SDA1
SCL1

TV-V

MPX-L

MPX-R

CBIN
CRIN

S-SW

L-OUT
R-OUT

TV/YIN

EXT/CIN

SW-R

SW-L

YUV-SW

TV-A

MON-V

AV
AV.Sch

ACL

FBT12V

FBP

V-RAMP

V-RAMP F/B

H-OUT

VIF

EXT/CIN
TV/YIN

CBIN
CRIN

TV-V

R
G

B
VSYNC
HSYNC

CLKCN

FSTBLK

RESET

FSC

PONCN

MONITOR

SCL1
SDA1

MCU5.7

SCL2

SDA2

4.5M-H

RFAGC

X-RAY1

BT

X-RAY2

X-RAY1

TV-A

AFT

STBY12V

STBY15V

TU5V

P-ACL

8V

MON-V

TU8V

FBT27V

SIF

ACL_OFF

TEXT VCC

VCJ
VCJ.Sch

S-MUTE

R
G
B
VSYNC
HSYNC

SDA2
SCL2

CLKCN
FSTBLK

RESET
FSC
PONCN

MONITOR

STBY15V

4.5M-H

P-ACL

S-SW

SCL1
SDA1

X-RAY1

MCU5.7

X-RAY2

50/60

YUV-SW

ALARM

AFT

2-H

STBY12V

ACL_OFF

MICON
MICON.Sch

ACL

H-OUT

B4

FBT12V

FBP

V-RAMP

V-RAMP F/B

50/60

X-RAY1

OE

DEFL
DEFL.Sch

B4

STBY15V

L-OUT
R-OUT

S-MUTE

STBY12V

ALARM

FBT27V
FBT12V

TEXT VCC

POWER
POWER.Sch

TU5V

VIF

RFAGC

BT

SDA1
SCL1

FBT12V

2-H

4.5M-H

SCL2

SDA2

SW-L

SW-R

MPX-L

MPX-R

R-OUT

L-OUT

TU8V

SIF

TU
TU.Sch

SDA2
SCL2

SDA1
SCL1

SCL2

SDA2

SDA1

SCL1

SCL1

SDA1

OE

TEXT
TEXT.Sch

1 2 3 4 5 6 78

A

B

C

D

8

7654321

D

C

B

A

Title

Number RevisionSize

A2

Date: 12-May-2005 Sheet of
File: F:\DESIGN DOCUMENT\T1\circuit diagram\21 inch flat\T1 ES4.ddbDrawn By:

R249

2.2K
R250

2.2K
R251

2.2K

C245

16V 100

C244

0.01

R247
10K

R246
10K

R245

1/2W 10K

C249

0.01

D213
HZS5C1

R248
120K

C247

50V 1

C248

Poly 0.018

R244

6.8K

C242
50V 1

C243

0.01

R231

R252

2.2K

C236

0.01

R233
100

R234
100

L202
no use

R229
no use

IN1SW2GND3O14O2

5

X202
K7252M

D210

R223

2.2K

R240
56K

R224
1K

R220

3.3K

R221
1K

C221
2200P

C229

0.01

C223
22 CH

C233

Poly 0.1

C232
2700P

C226
Poly 0.22

C225
Poly 0.22

C227

0.1 R230
22K

C234
50V 1

C215
220P CH

C202

0.1

C203

0.1

X201

4.43MHz

Q202
2SC2236-O,Y

Q206

C218
16V 47

C252
50V 10

C217
10V 470

C250
16V 100

C246 no use

R243
27K

R215
10K

C220
25V 1000

R217
3W 22

D208
EU2A

D209

R216
1W 560

D206
HZS9A2

D207

C219
10V 470

R257
3W 390

R209
47K

C216

0.1

R210
47K

R211

2.2K

C214

0.015

C213
50V 1

R208

6.8K

C211

0.01

C208

0.01

L201
33

C207 180P CH

C206

0.01

C209

10V 470

C201

10V 470

R20275R201

75

ACL

STBY15V

FBP

V-RAMP
V-RAMP F/B

H-OUT

VIF

EXT/CIN
TV/YIN

CBIN
CRIN

TV-V

R
G

B
VSYNC
HSYNC

CLKCN
FSTBLK

RESET
FSC

PONCN

MONITOR

SCL1
SDA1

MCU5.7

123456789

1011121314

15

TEXT P.W.B. ASSY

SCL2
SDA2

4.5M-H

R228
1/2W 10M

RFAGC

C222
50V 1

X-RAY1

D205
HZS12C1

D203

D204

D211

D212
EU2A

C239
160V 1

R238
1W 4.7K

BT

R239
22K-F

R241
15K-F

R242
33K F

C241
50V 1U

X-RAY2

X-RAY1

R253
10K

MITSUBISHI ELECTRIC ENGINEERING
VCJ

B

TP99TP98

3

TV-A

C240
no use

AFT

MMF

TP13

K217
no use

K219
no use

K220

Q207
2SC2236-O,Y

C253

50V 10
C251
16V 100

R258
3W 270

R255
100

R254
100

STBY12V

STBY12V

K223

TU5V

K221
no use

R259
100

R260
100

R261
100

D214
D215
D216

R232
1M

C238
*
C237
*

R213
22K

R212
22K

K207

D201
no use

D202
no use

C204
no use

C205
no use

R204
100

R203
100

C235
no use

MMF

MMF

C231
no use

C230
no use

C224
50V 0.47

R227
no use

MMF

C228

0.22

MMF

R214
100

TP201

K208

K209

R207
no use

R226
330

R222
680

R225
*R218

470*

R219
*

K212
*

R206
no use

R205
no use

R262
no use

R263
no use

R264
no use

R266
no use

R265
no use

R267
no use

R268
no use

R269
no use

R271
no use

R270
no use

R272
no use

R273
no use

C254
no use

R274
no use

P-ACL

D217
no use

D218
no use

Q210
no use

Q208
no use

Q209
no use

MMF

8V

R235
no use

R236
no use

K203

K204

K206

K205

K201
no use
K202
no use

C210

50V 1

C212 50V 1

K218

C257

0.01

K213
*
K214
*
K215
*
K216
*

K224

MON-V

2Vpp

FBT12V

C256

0.01

C255
16V 100

TU8V

K281

K280

K279

Q203
*

K272
*

R276
820*

SIF

C258
180P*

R275
100*

ACL_OFF

D219

105C

105C

105C

L203
10

K275
*

K273
*

R277
220

D220

HZS9A2

R278
no use

K282

K105
no use

K277

TEXT VCC

no us

e

no us

e

D214A

D216A

D215A

C234A Poly 0.022*

AFC FILTER7V.RAMP F/B6V.RAMP OUT5SIF Vcc4VIF Vcc3AFT OUT2VRAMP CAP

1

DEF GND8LOGIC GND9FBP IN10H OUT11DEF Vcc12VDD DECOUPLING13R OUT14G OUT15B OUT

16

HVCOF/B

17

MONITOR OUT

18

INV FBP OUT

19

V PULSE OUT

20

B IN

21

G IN

22

R IN

23

FAST BLK

24

ACL/ABCL

33

MCU5.7V OUT

32

VIF IN(1)

63

IF AGC FILTER

62

VIF IN(2)

64

CLK CONTROL

25

PAL ID FILTER

61

VIF APC FILTER

60

RF AGC OUT

59

VIF GND

57

VIF VIDEO OUT

58

SDA

26

SIF GND

56

VIF VCO F/B

55

FM DIRECT OUT

54

AUDIO BYPASS

52

SECAM PLL F/B

53

SCL

27

INTER CARRIER OUT

48

SECAM BELL F/B

51

SIF MIXER F/B

50

5.7V REG OUT

49

P-ON CONTROL

28

DRIVE GND

35

CHROMA APC FILTER

37

Cb IN

45

Cr IN

46

8.7V REG OUT

47

FSC OUT

29

X-TAL4.43

34

EXT/C IN

38

VREG Vcc

42

DDS FILTER

43

Hi Vcc

44

MCU RESET

30

Y SW OUT

31

VIDEO/CHROMA GND

36

DRIVE Vcc

39

VIDEO/CHROMA Vcc

40

TV/Y IN

41

I201
M61262BFP

Q201

2SA1993-E,F

E202
CON05

12345

no use

!

!

!

!

1 2 34

A

B

C

D

4

321

D

C

B

A

Title

Number RevisionSize

A4

Date: 12-May-2005 Sheet of
File: F:\DESIGN DOCUMEN T\T1\circuit diagram\21 inch flat\T1 ES4.ddbDrawn By:

1

2

3

4

5

6

7

8

9

10

11

12

13

NICAM P.W.B. ASSY

IF11-10+30V

9NC8

+5V7NC6SDA5SCL4ADRS

3

VC Mon.2AGC

1

U101
ENV59K05G3

R105
27K

C103
50V 10

C104
no use

C105

no use

R108
100

R109
100

R106

4.7K

TP11

R107
no use

R101
no use

C101

6.3V 1000
C107

50V 22

D101
HZS33-1

L102
100

C108
2200P

R102
100

Q101
2SC1906

R103

4.7K

R110

1.5K

R111
22

R104
560

L101

1.2

C102

0.01

TU5V

VIF

RFAGC

BT

SDA1
SCL1

FBT12V

2-H

4.5M-H

SCL2

SDA2

MITSUBISHI ELECTRIC ENGINEERING
TUNER

B

1

SW-L

SW-R

MPX-L

MPX-R

130mAMAX

4mAMAX

TP12A

R-OUT
L-OUT

C106
no use

TO AUDIO OUT

TO AV-SW

FROM AV-SW

K101

K177

C109
no use

L103
no use

TU8V

R112
no use

Axial type is required.

TP12B

SIF

K146
no use

K276
no use

K138
no use

L104

100

C106A
Poly 0.01

Connect with Pin of Tuner packageConnect with Pin "-" of C106