Sony SLV-ED22KR / SLV-ED22PL / SLV-ED22TW / SLV-ED55KR / SLV-ED55PL / SLV-ED88TW / SLV-ED99KR / SLV-ED99PL / SLV-ED99TW Service Manual ▷ View online
4-7
MA-377
VIDEO, AUDIO, I/O,
SERVO/SYSTEM CONTROL,
TUNER, MODE CONTROL
SERVO/SYSTEM CONTROL,
TUNER, MODE CONTROL
GK-12 (ED99KR)
(ZWEITON)
(ZWEITON)
RF-048 (ED22TW/ED88/ED99TW)
(TUNER)
(TUNER)
FJ-26
(ED55/ED99)
(FRONT IN)
(ED55/ED99)
(FRONT IN)
DS-92
(MODE CONTROL)
(MODE CONTROL)
POWER BLOCK
(PSM17-501)
(POWER SUPPLY)
(PSM17-501)
(POWER SUPPLY)
KK-24
(EASY TIMER, SEARCH)
(EASY TIMER, SEARCH)
MF-321
(POWER SWITCH)
(POWER SWITCH)
(
)
MA-377 BOARD
CN031
H-4
CN051
E-2
CN071
A-1
CN072
A-1
CN104
J-12
CN201
B-9
CN202
D-11
CN204
B-9
CN331
B-4
CN332
B-5
CN401
J-13
CN411
J-1
CN600
G-1
CN702
B-12
CN701
G-13
CN901
C-11
D001
F-6
D071
C-1
D101
F-1
D102
F-2
D151
G-7
D401
J-8
D403
F-11
D651
F-1
D701
C-12
D703
F-12
D901
A-1
IC031
I-2
IC101
H-6
IC141
I-8
IC142
I-7
IC201
C-9
IC202
D-6
IC291
E-9
IC360
A-8
IC451
I-6
IC651
E-11
IC652
D-1
IC653
F-1
IC701
G-13
Q001
F-1
Q002
F-10
Q003
F-6
Q153
F-4
Q172
G-9
Q174
H-10
Q191
H-7
Q192
H-7
Q202
C-10
Q203
D-6
Q206
B-7
Q210
D-7
Q211
D-7
Q337
A-6
Q338
A-6
Q339
A-6
Q372
B-5
Q373
B-5
Q374
B-4
Q375
C-6
Q376
C-5
Q380
C-5
Q381
C-4
Q701
C-13
Q702
F-12
Q704
H-12
Q706
E-12
Q707
D-12
Q901
B-2
Q902
D-11
Q903
D-12
Q904
B-2
SLV-ED22/ED55/ED88/ED99
4-9
4-10
MA-377 (VIDEO, AUDIO) SCHEMATIC DIAGRAM
• See page 4-5 for printed wiring board.
– Ref. No.: MA-377 board; 1,000 series –
VIDEO, AUDIO
MA-377 (1/7)
:ED22
:EXCEPT ED22
:EXCEPT ED22
:ED22
:EXCEPT ED22
:EXCEPT ED22
ED88/ED99
ED55
ED22/ED55
:ED22
:EXCEPT ED22
EXCEPT ED22
:EXCEPT ED22
:ED22
EXCEPT ED22
ED22/ED55
ED55/ED99:PL
ED55
ED99
EXCEPT ED99
ED99
NO MARK:REC/PB MODE
R:REC MODE
P:PB MODE
R:REC MODE
P:PB MODE
2.6
2.5
2.3
4.1
1.9
1.8
2.7
2.5
4.9
2.9
2.3
1.8
4.9
1.1
0.2
0.2
4.6
4.6
B+
14
13
14 15
16
B+
0.4
2
2.5
4.9
2
4.9
4.9
3
4.9
0.1
4.9
3
2.8
2.8
1.9
2.8
2
1.4
2.1
3
1.9
2.2
2.7
3
2.3
2
R3.3/P0.6
R2.6/P3
R1.9/P1.3
R1.9/P1.3
4.9
2.4
2.4
2.5
2.5
2.5
2.8
2.6
0
2.5
2.2
1.3
2.4
R0/P3.8
2.4
2.5
2.4
2.4
4.9
R0.1/P2.2
R0.1/P2.2
R0.1/P2.2
R0.1/P2.2
R0.1/P2.2
0.3
4.9
0.1
0
2.5
4.9
0.1
0
R3.6/P2
2.7
4.5
2.4
1.8
2.3
2.1
2.8
2.8
4.7
4.7
R1/P2.6
0
4.7
4.7
4.7
2.1
3.1
3
0.1
2.3
2.1
1.9
2.8
2.4
0.1
R2.7/P1
1
3
4
5
6
7
8
2
11
12
11
10
9
B+
B+
B+
B+
B+
B+
B+
B+
1.6
0
1.6
4.9
4.9
1.6
2.3
4.9
0
5
1.2
0
B+
2.5
:ED22:KR,PL
:ED22:TW/ED55/ED88
:ED22:TW/ED55/ED88
ED22/
ED55/
ED88
ED55/
ED88
EXCEPT ED22
:ED22
:EXCEPT ED22
:EXCEPT ED22
:EXCEPT ED22
:ED22
:ED22
:ED22
:EXCEPT ED22
:ED22
:EXCEPT ED22
:ED22
:EXCEPT ED22
:EXCEPT ED22
:ED22
:ED22/ED55
:ED88/ED99:TW
ED22/ED55/ED88/ED99:TW
ED99:KR,PL
ED99:TW,KR
ED99:KR
:ED22:TW/ED88/ED99:TW
:EXCEPT ED22:TW/ED88/ED99:TW
:EXCEPT ED22:TW/ED88/ED99:TW
0.01u
C249
*
L202
*
C203
0.1u
C228
0.01u
C261
2.2u
C251
JL217
50V
4.7u
C229
2700p
C358
JL223
JL213
0.01u
C215
0.01u
C294
47k
R364
0.022u
C231
JL216
JL225
*
R212
CL303
R216
100
4P
CN202
1
HF ADJ
2
PB RF
3
V.SWP
4
GND
6p
C226
2.2u
C201
IC201
HA118217NF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
*
C230
R351
3900
100
R214
0.022u
C221
0.01u
C369
50V
4.7u
C290
JL212
100
R215
15k
R360
16V
10u
C238
0.01u
C239
LA7277M-TLM
IC291
1
C OUT
2
Y OUT
3
Y SYNC
4
V OUT
5
VCC
6
FIL ADJ
7
MONI 1
8
MONI 2
9
CLK
10
DATA
11
MAIN OFF
12
SUB
13
SUB
14
SUB
15
SUB
16
GND
17
REG
18
Y IN
19
MCOR 3
20
C IN
1u
C258
JL221
27k
R354
4700
R218
*
C202
0.1u
C241
0.47u
C220
0.1u
C235
2.2u
C248
CL291
15k
R366
10u
C356
50V
JL205
1.5M
R365
0.01u
C237
JL360
0.033u
C206
16V
22u
C362
0.022u
C354
1u
C253
8200
R299
3.579693MHz
X202
0.1u
C233
270p
C252
2200p
C256
50V
1u
C365
2.2u
C292
JL211
1k
R289
150k
R352
6800
R205
16V
10u
C245
JL202
JL204
*
R359
0.1u
C351
50V
4.7u
C223
22u
C355
16V
*
C211
*
C204
10k
R291
*
R202
15k
R363
4700p
C217
0.01u
C246
*
C207
27k
R356
10k
R296
50V
4.7u
C298
0.01u
C295
JL227
2.2u
C225
0.22u
C247
UN2213-TX
Q203
0.1u
C208
47k
R367
JL210
*
C212
470
R319
1u
C224
JL224
50V
1u
C361
*
R208
JL291
0.1u
C289
JL201
JL214
BA7653AF-E2
IC202
1
IN1
2
INS
3
IN2
4
NC
5
IN3
6 VCC
7 OUT
8 GND
18k
R355
0.22u
C291
0.1u
C236
JL208
10u
C360
16V
100uH
L351
0.01u
C260
R361
0
1u
C216
1200p
C357
2200p
C255
16V
10u
C296
0.1u
C222
JL203
UN2213-TX
Q206
*
C210
4700p
C257
JL222
4700
R207
0.01u
C299
JS291
*
C213
JL207
*
C205
50V
4.7u
C364
JL228
2.2u
C259
10k
R350
4700p
C254
50V
4.7u
C353
JL215
0.1u
C240
50V
4.7u
C359
50V
3.3u
C209
50V
1u
C366
1500
R206
0.1u
C242
27k
R204
JL206
JL226
JL292
12uH
L204
R211
0
*
C214
50V
3.3u
C243
0
R357
120
R353
*
L205
11P
CN201
1
LP CH2
2
LP COM
3
LP CH1
4
SP CH2
5
SP COM
6
SP CH1
7
FE
8
FE
9
AUDIO CH1
10
AUDIO COM
11
AUDIO CH2
16V
47u
C352
JL209
6P
CN204
1
LP CH2
2
LP COM
3
LP CH1
4
SP CH2
5
SP COM
6
SP CH1
2.2M
R219
10uH
L206
16V
47u
C234
150p
C227
W001
0
JS203
4700
R368
0.01u
B
C244
10uH
L207
JS202
0
CL290
CL292
CL293
CL294
CL295
CL296
CL297
CL298
CL299
CL231
CL230
Q211
2SD601A-QRS-TX
1k
R224
470
R223
470
R222
33p
C262
47uH
L215
UN2213-TX
Q210
10uH
L214
1k
R225
120k
R226
470
R228
2.2u
C218
100
R294
100
R295
1000p
C219
JS201
0
AU_GND
PB_A_HEAD
REC_A_HEAD
LINE_IN2_L
SW5V
AUDIO_OUT
L2_VIDEO
L3_VIDEO
VIDEO_OUT
GND
NORMAL_AU
NA_HF_OUT
AUDIO_CH1
AF_ENV
AUDIO_CH2
AUDIO_COM
SDT
ACK
MESEC
APC
CSYNC
QVD
VOUT
VCLK
VDAT
RFSWP
RFENV
INS
SDA
SCK
NAPB
NTSC
AMUTE
1
A
LINE_IN3L(SAT)
L1_VIDEO
27p
C264
10uH
L211
CL203
L208
0
L209
0
L210
0
JS362
0
AN_GND
V16
V64
VV35
VV37
VV21
VV26
VV37
VV26
VV21
V50
VV46
VV44
VV46
VV44
HC36
HC37
HC35
HA21
AV2
HA22
V51
VV35
H44
V17
HT42
HT43
VS1
VS3
VS1
VS3
HA21
HA22
H44
HC37
HC36
HC35
V16
A99
A4
HT43
HT42
AV2
V84
V81
VR63
VR62
V52
V51
V50
V17
V97
V64
CN1
VR63
A4
V97
A99
V84
V81
V52
HA21
VR62
CN1
MA-377 BOARD(7/7)
(SEE PAGE 4-23)
MA-377 BOARD(2/7)
(SEE PAGE 4-13)
MA-377 BOARD(2/7)
(SEE PAGE 4-13)
(SEE PAGE 4-17)
MA-377 BOARD(4/7)
(SEE PAGE 4-13)
MA-377 BOARD(2/7)
(SEE PAGE 4-19)
MA-377 BOARD(5/7)
(SEE PAGE 4-21)
MA-377 BOARD(6/7)
(SEE PAGE 4-17)
MA-377 BOARD(4/7)
(SEE PAGE 4-17)
MA-377 BOARD(4/7)
MA-377 BOARD (1/7)
(JIG)
LP CH2
SP CH2
SP CH1
LP CH1
AUDIO CH1
AUDIO CH2
SP CH2
LP CH2
LP CH1
SP CH1
05
11
14
3
7
5
9
I
D
G
C
J
H
F
E
B
4
10
6
16
15
12
8
2
13
17
18
K
L
IC201
VIDEO REC/PB AMP
VIDEO INPUT SELECT
Y/C PROCESS
NORMAL AUDIO PROCESS
SYNC SEP OUT
AV TAB
AV TAB
AV TAB
CCD C-IN
CCD GND
CCD TAB
CCD Y-IN
CCD TAB
CCD TAB
CCD Y-OUT
CCD TAB
CCD MODE COUNT IN
CCD VCC
CCD C-OUT
AV TAB
AV TAB
AV TAB
LINE IN1
CCD CLK IN
SQ IN
Y OUT
VIDEO 0UT FBC
COLOR IN
PB C-OUT
VIDEO OUT ALC
CCD CONT
C-CCD FB-IN
LEVEL DET
C-CCD DRIVE
VCC
IIC CLK
IIC DA
T
A
KILLER OUT
2fsc VCO DET
LC-VCO
DO OUT
GND
CCD SIG 2fsc OUT
CR-DET
3.58 X-tal IN
ACC DET
X-tal OSC OUT
REC APC
3.584/.43 Xtal IN
PB APC/REC AFC
MESECAM DET
SEP C IN
PB C OUT
SP/EP
DRUM FF IN
CK DET
DISCRI
ENV OUT
GND
SP CH2(+)
SP CH2(-)
SP CH1(-)
SP CH1(+)
VCC
SP CH2(+)
SP CH2(-)
SP CH1(-)
SP CH1(+)
AUDIO ALC FILTER
AUDIO VCC
S/VHS
REC Y+C OUT
MUTE
AUDIO PB
EQ OUT
EQ OUT
AUDIO PB IN (-)
AUDIO PB IN (+)
AUDIO PB EP SW
AUDIO REC OUT
AUDIO GND
B.G.
AUDIO LINE IN3
AUDIO LINE IN2
AUDIO LINE IN1
AUDIO BYP
ASS
AUDIO LINE OUT
VCC
MAIN EM OUT(REC)
S-DET
E-PEAK
G-EQ
CLAMP DRIVE
MAIN CLAMP IN
ME FBC(REC)
APL(PB)
Y
-CCD DRIVE
ME ALC/PB FM AGC
Y
-CCD CLAMP
Y
-CCD LPF OUT
CCD ADJ
FROM Y
-CCD
GND
LINE IN3
AGC DET
LINE IN2
MAIN DEEM IN(PB)
MAIN EM IN(REC)
MAIN DEEM OUT(PB)
CHECK
22p
150p
*C214
*R202
220
470
470
INVERTER
82uH
100uH
*L205
4700p
0.01u
*C202,C205
0.01u
2200p
*C203,C204
24p
*C230
39p
*R208
IC202
VIDEO INPUT
SELECT
REC TRAP
SWITCH
SWITCH
BUFFER
Q203
PAL/NTSC SWITCH
PAL/NTSC SWITCH
IC291
ARC
AUDIO
PB
CHROMA
VIDEO SIGNAL
SIGNAL PATH
Y/CHROMA
SIGNAL
Y
REC
9
7
8
6
3
4
5
2
1
0
4700
*R212
10uH
220uH
*L202
33p
*C210,C211
22p
0.01u
*C212,C213
22p
12k
10k
*R359
68k
47k
0.01u
*C207
0.1u
• Waveforms
MA-377 BOARD (1/7)
MA-377 BOARD (1/7)
1
IC201
ia
REC/PB
5.3 Vp-p (H)
2
IC201
ih
,
il
REC
40 mVp-p (H)
3
IC201
ul
PB
720 mVp-p (H)
4
IC201
uk
PB
640 mVp-p (H)
5
IC201
ua
REC/PB
608 mVp-p (3.58 MHz) (NTSC)
6
IC201
y;
REC/PB
320 mVp-p (H)
7
IC201
tk
REC/PB
REC: 512 mVp-p (H)
PB : 584 mVp-p (H)
8
IC201
t;
REC/PB
4.6 Vp-p (H)
9
IC201
e;
REC/PB
1.1 Vp-p (H)
0
IC201
wh
REC/PB
REC: 512 mVp-p (H)
PB : 584 mVp-p (H)
qa
IC201
qk
,
ql
,
wd
REC/PB
REC: 472 mVp-p (H)
PB : 504 mVp-p (H)
PB : 504 mVp-p (H)
qs
IC201
wa
REC/PB
392 mVp-p (H)
qd
IC291
w;
PB
152 mVp-p (H)
qf
IC291
4
,
qk
REC
2.1 Vp-p (H)
qg
IC291
qk
PB
1.9 Vp-p (H)
4-11
4-12
qh
IC291
4
PB
2.2 Vp-p (H)
MA-377 BOARD (2/7)
1
IC101
wd
REC/PB
5.2 Vp-p (25 Hz)
2
IC101
wf
REC/PB
5.2 Vp-p (25 Hz)
3
IC101
ea
REC/PB
5.2 Vp-p (25 Hz)
4
IC101
es
REC/PB
5.5 Vp-p (25 Hz)
5
IC101
ek
REC/PB
4.8 Vp-p (301.2 Hz)
6
IC101
el
REC/PB
4.8 Vp-p (25 Hz)
7
IC101
r;
REC/PB
4.7 Vp-p (757.6 Hz)
8
IC101
rd
REC/PB
2.2 Vp-p (H)
9
IC101
rg
REC/PB
2.2 Vp-p (H)
q;
IC101
tf
REC/PB
4.1 Vp-p (H)
qa
IC101
yh
REC/PB
5.1 Vp-p (H)
qs
IC101
yl
REC/PB
2.6Vp-p (32.768 kHz)
qd
IC101
ud
REC/PB
4.3 Vp-p (10 MHz)
SLV-ED22/ED55/ED88/ED99
4-13
4-14
MA-377 (SYSTEM CONTROL) SCHEMATIC DIAGRAM
• See page 4-5 for printed wiring board.
• See page 4-12 for Waveforms.
– Ref. No.: MA-377 board; 1,000 series –
SYSTEM CONTROL
MA-377 (2/7)
4.6
4.6
5
5.1
4.8
5
5
4.9
5
2.6
2
2.5
0
0
5
2.5
1.8
R0.1/P11.8
5
R0/P1
2.2
0.1-5
5
4.7
0
5
2.7
5
0
0.1-5
0
4.4
0
0.5
0.2
4.8
0.2
5
5
5
0
2.4
*
5
1
*
1.5
2.7
2.7
4.7
4.6
0
2.6
4.6
4.6
0.3
2.3
5
1.1
2.3
1.1
1.5
2.5
2.3
2.3
1.3
4.9
2.5
4.9
2.4
2.4
2.4
2.4
0.3
2.4
R2.8/P2.4
R2.1/P2.4
5
0
0
0.1
2.7
5
2.7
R5/P0
3
0
1
2.8
5
5
R0.2/P3.1
5
2.5
5
R0/P3.6
5
5
4.7
3.5
4.9
5
2
0
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
B+
1
2
3
4
5
6
7
8
9
11
10
12
13
:ED22:TW/ED88/ED99:TW
:ED99:KR
:ED22:KR,PL/ED55/ED99:PL
:ED88
:ED55
:ED22:TW
:ED22:KR,PL
:ED22:KR,PL
:ED99:KR
ED99
ED88/ED99
*:IMPOSSIBLE TO MEASURE THE
VOLTAGE AT THE MARKED POINTS.
VOLTAGE AT THE MARKED POINTS.
NO MARK:REC/PB MODE
R:REC MODE
P:PB MODE
P:PB MODE
0
ED22/
ED55/
ED88/
ED99:KR
ED55/
ED88/
ED99:KR
:ED22:KR,PL/ED55/
ED99:KR,PL
:ED22:TW/ED88/ED99:TW
ED99:KR,PL
:ED22:TW/ED88/ED99:TW
JL120
1k
R159
JL126
47k
R120
470
R115
3300p
C107
10k
R128
JL129
47k
R118
47k
R116
JL121
RECP
470k
R151
MM1256AFBE
IC141
1
GND
2
NC
3
NC
4
NC
5
VCC 2
6
OUT 2
7
VCC 1
8
OUT 1
10k
R127
AFENV
JL128
20p
C111
47k
R125
1k
R117
NTSC
15uH
L152
16V
10u
C194
16V
10u
C153
16V
22u
C195
JL191
1k
R171
R122
1M
120p
C196
39p
C158
OSO
1k
R154
AFSWP
IC101
SW1/F.MONO
1
AN GND
2
APC ERROR
3
ETR 1
4
FUNC KEY2
5
TU AFT
6
FUNC KEY1
7
POWER FAIL
8
ETR 2
9
DEST
10
S SENS
11
T SENS
12
VIDEO RF
13
AU RF
14
UN5V
15
RESET
16
SW2/SAP.BILL.OUT
17
PAL/MAIN/SAP
18
OSD MIX/TUNER_MUTE
19
SP
20
NA PB
21
VCC
22
AF SWP
23
RF_SWP
24
CAP-VS
25
DRUM_VS
26
QVD
27
C ROTARY
28
H AMP SW
29
COMP
30
CTL+
31
CTL-
32
VSS(SERVO)
33
CTL AMP1
34
CTL AMP2
35
CTL AMP3
36
CTL AMP OUT
37
DRUM FG
38
DRUM PG
39
CAP FG
40
VCC(SERVO)
41
VCC(OSD)
42
VIDEO IN
43
V REF
44
VIDEO OUT
45
CHAR BIAS
46
AFC LPF
47
AFC OSD
48
VSS(OSD)
49
D OSC IN
50
D OSC OUT
51
4 fsc IN
52
4 fc OUT
53
C SYNC
54
REC PRF
55
IIC DATA
56
IIC CLOCK
57
DRUM QR
58
PB
59
AF REC P
60
TV/VTR
61
IIC CLK(VIDEO)
62
IIC DATA(VIDEO)
63
BLUE BACK
64
APC PWM
65
CAP TRQ PWM
66
SECAM ON/STEREO_OUT
67
TEST
68
(OUT) 32kHz
69
(IN) 32kHz
70
VSS
71
(IN) 10MHz
72
(OUT) 10MHz
73
END LED
74
P CONT
75
RR CLK
76
RR DATA
77
OSD SELECT
78
AUDIO MUTE
79
WRITE CONT
80
IN SEL
81
REMOCON
82
CAM
83
MODE 1
84
MODE 2
85
MODE 3
86
MODE 4
87
T REEL
88
S REEL
89
FLD CS
90
FULL ERASE
91
REC P
92
CAP RVS
93
CAP QR
94
S CLOCK_O
95
S IN_0
96
S OUT_O
97
PLL CLOCK
98
TU ENABLE
99
PLL DA
T
A
100
10MHz
X101
NAPB
0.022u
C193
12p
C165
CTL-
50V
4.7u
C154
UN2211-TX
Q174
AMUTE
CL101
0.01u
C155
1k
R194
22uH
L171
56p
C172
180k
R192
680
R174
22k
R156
100
R152
0.1u
C171
JL115
CTL+
1800
R153
470
R175
1SS119-25TD
D151
22uH
L172
JL124
22k
R111
1M
R155
2SB709A
-QRS-TX
Q172
100
R172
15p
C108
UN2211-TX
Q171
1M
R193
39p
C157
JL117
10k
R110
10k
R102
15p
C109
PLLDAT
68
R104
4700
R177
470
R113
100p
C156
470
R114
PLLCLK
0.1u
C105
10k
R108
SDA
10k
R105
0.01u
C106
50V
4.7u
C152
ENABLE
470p
C191
3300p
C197
22uH
L151
JL116
AFT
SW2
1k
R103
*
R101
PCO
*
IC142
1
NC
2
NC
3
NC
4
NC
5
D
ATA
6
CLK
7
WRITE CONT
8
NC
2SD601A-QRS-TX
Q191
47p
C192
JL192
SW1/F.MONO
JS101
470
R112
1k
R107
JS191
SCK
JL127
1k
R109
0.22u
C112
0
JS151
2.2u
C151
0
R106
10k
R165
0.22F
C103
5.5V
1k
R164
220k
R142
2SD601A-QRS-TX
Q153
10k
R157
220k
R144
0.1u
C168
0.01u
C141
4700
R161
0.1u
C143
10k
R162
0.01u
C142
10V
470u
C104
470k
R143
0.22u
C167
0.1u
C101
15p
C161
7p
C162
17.734475MHz
X151
10k
R158
JL118
47k
R119
JL119
JL123
32.768kHz
X102
JL122
20p
C110
1k
R163
JL125
1k
R121
100k
R129
0.1u
C113
1k
R130
JL100
47k
R191
UN2211-TX
Q192
JS171
5P
CN104
1
GND
2
DATA
3
CLK
4
RESET
5
WRITE CONT
10k
R131
JL131
JL134
JL135
10k
R123
JL132
JL133
0
R166
0
R167
VCLK
APC
QVD
VOUT
CSYNC
INS
VDAT
RFSWP
RFENV
SW5V
FUNC_KEY2
D_IN
CLK
CS
D_OUT
REMOCON
ETR2
ETR1
CAM
DRUM_VS
DRUM_FG
DRUM_PG
CAP_RVS
CAP_FG
CAP_QR
CAP_VS
CAP_TRG_PWM
MODE_4
MODE_3
MODE_2
MODE_1
T_REEL
S_REEL
S_SENS
T_SENS
P.CONT
REC_PRF
DRUM_QR
END_LED
UN5V_BCAP
1
A
UN5V
FUNC_KEY1
FULERA
SCK
SDA
SCK
SDA
TV/VTR
MAIN/SAP
TUNER_MUTE
SECON
0
JS104
DGND
M25
M11
M12
M39
M88
M89
M93
M94
M26
T01
T06
HT56
HT57
S7
FL96
FL95
FL90
A79
V54
V62
FL97
M83
M84
M85
M86
M87
S82
M40
M38
A21
A79
A92
V18A
H14
V45
A91
A92
C31
C32
V63
T17
T17
T98
T01
T06
T100
T99
T100
T99
T98
V13
A21
H23
V24
V27
V65
V18A
S4
S9
V43
V75
M55
M58
M74
T19
H14
V67
HT56
HT57
V65
V62
V54
V24
V81
V13
V63
V27
FL96
FL97
FL95
FL90
M12
M89
M84
M85
M86
M11
M88
M87
M66
M25
M94
M40
M93
M39
M38
M26
M83
H23
S82
S9
S4
C32
M66
V75
HT56
M74
M58
M55
V45
HT57
V81
C31
S7
V43
A91
HT56
HT57
T61
V18
T19
V67
T61
V18
RESET
E
9
5
19
C
16
13
11
14
15
3
17
7
F
2
05
G
12
B
8
I
10
D
6
MA-377 BOARD (2/7)
K
4
J
H
18
MA-377 BOARD(7/7)
(SEE PAGE 4-24)
(SEE PAGE 4-20)
MA-377 BOARD(5/7)
(SEE PAGE 4-10)
MA-377 BOARD(1/7)
(SEE PAGE 4-22)
MA-377 BOARD(6/7)
(SEE PAGE 4-17)
MA-377 BOARD(4/7)
(SEE PAGE 4-10)
MA-377 BOARD(1/7)
(SEE PAGE 4-22)
MA-377 BOARD(6/7)
MA-377 BOARD(6/7)
(SEE PAGE 4-22)
MA-377 BOARD(3/7)
(SEE PAGE 4-15)
(SEE PAGE 4-15)
MA-377 BOARD(3/7)
CHECK
(WRITER JIG)
IC101
SERVO/SYSTEM CONTROL
IC141
POWER FAIL DET
IC142
EEP ROM
(SEE PAGE 4-24)
MA-377 BOARD(7/7)
10
OSD
HD6433977R-TW
HD6433977RC75F
HD6433977RC74F
1.2k
2.7k
2.7k
10k
6.8k
22k
*R101
VIDEO
BUFFER
BLUE BACK
SWITCH
INVERTER
Q191,192
AUDIO DUB
25
(SEE PAGE 4-10)
MA-377 BOARD(1/7)
3
11
(SEE PAGE 4-18)
MA-377 BOARD(4/7)
12
2
13
14
5
15
16
PWM-DC CONV
Q153
18
RESET PULSE GENERATOR
17
Ref.signal
Drum phase servo
Capstan speed servo
REC
REC/PB
Capstan servo(speed and phase)
Drum speed servo
SIGNAL PATH
PB
Drum servo(speed and phase)
Y/CHROMA
VIDEO
SIGNAL
SIGNAL PATH
PB
M24C02-WMN6T
MM1256AFBE
*IC142
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