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SLV-EX5/EX8S/EX9S
Q Q
3 7 6 3 1 5 1 5 0
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 –
1
2
3
4
MA-377 BOARD (2/7)
A
FL96
D_OUT
FL97
D_IN
10
FL95
CLK
MA-377 BOARD(7/7)
B
FL90
(SEE PAGE 4-24)
CS
FUNC_KEY2
C
3
SDA
MA-377 BOARD(1/7)
SCK
(SEE PAGE 4-10)
11
SDA
MA-377 BOARD(4/7)
SCK
D
(SEE PAGE 4-18)
HT56
HT57
T98
PLLCLK
T100
PLLDAT
T99
ENABLE
E
12
T06
AFT
MA-377 BOARD(5/7)
T17
SW2
(SEE PAGE 4-20)
T61
TV/VTR
T01
SW1/F.MONO
V18
MAIN/SAP
T19
TUNER_MUTE
V67
SECON
F
T E
L
1 3 9 4 2 2 9 6 5 1 3
25
MA-377 BOARD(7/7)
(SEE PAGE 4-24)
V65
APC
V54
CSYNC
G
V27
QVD
V43
2
VOUT
V62
MA-377 BOARD(1/7)
VCLK
V63
(SEE PAGE 4-10)
VDAT
V24
RFSWP
V13
RFENV
H
B+
13
V45
MA-377 BOARD(6/7)
OSO
(SEE PAGE 4-22)
I
L171
H23
22uH
AFSWP
H14
AFENV
V18A
14
A92
RECP
MA-377 BOARD(4/7)
R172
A21
(SEE PAGE 4-17)
V43
100
NAPB
A91
FULERA
C32
CTL-
J
C31
CTL+
5
A79
AMUTE
MA-377 BOARD(1/7)
V18A
(SEE PAGE 4-10)
NTSC
15
V75
MA-377 BOARD(6/7)
PCO
(SEE PAGE 4-22)
K
16
B+
MA-377 BOARD(6/7)
SW5V
(SEE PAGE 4-22)
05
w w w
SYSTEM CONTROL
MA-377 (2/7)
5
6
7
8
B+
0
T01
SW1/F.MONO
AN GND
2
APC ERROR
5
S4
R104
ETR 1
68
R110
10k
5
FUNC KEY2
2.5
R103
TU AFT
1k
T06
5
S7
C106
FUNC KEY1
0.01u
R105
4.9
10k
POWER FAIL
5
S9
ETR 2
3.5
EX5/
*R101
DEST
EX8S
4.7k
:EX5
R101
M11
5
10k
:EX8S
*
S SENS
5
M12
T SENS
R102
R0/P3.6
V13
10k
VIDEO RF
H14
R0.2/P3.1
AU RF
R129
R130
5
C105
100k
1k
UN5V
0.1u
C113
4.7
C112
0.1u
RESET
0.22u
0
T17
JL115
SW2/SAP.BILL.OUT
5
V18
PAL/MAIN/SAP
0
T19
OSD MIX/TUNER_MUTE
SP
JL116
R5/P0
RESET
A21
NA PB
S82
JS101
B+
5
REMOCON
VCC
S9
C101
H23
R106
0
3
ETR2
JL127
S4
0.1u
AF SWP
2.8
ETR1
R111
22k
V24
RF_SWP
S7
R107
2.7
FUNC_KEY1
C103
1k
CAP-VS
0.22F
M25
2.7
5.5V
DRUM_VS
M26
0.1
V27
QVD
R108
10k
R109
C ROTARY
1k
JL128
C104
H AMP SW
470u
C31
10V
COMP
JL191
3
C32
R2.8/P2.4
R174
680
R171
Q174
0
1k
UN2211-TX
BLUE BACK
R175
2.5
SWITCH
470
1.8
B+
2.5
Q172
C172
2SB709A
-QRS-TX
56p
VIDEO
BUFFER
L172
C171
22uH
0.1u
R177
4700
B+
JS171
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4-13
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9
10
11
12
B+
R121
1k
C107
3300p
R115
470
JL118
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
R123
10k
5
WRITE CONT
0
JL119
AUDIO MUTE
5
JL120
OSD SELECT
JL121
RR DATA
JL122
RR CLK
5
JL123
P CONT
X101
2.4
10MHz
END LED
R122
*
1M
13
(OUT) 10MHz
*
(IN) 10MHz
JL124
C109
VSS
C110
1
(IN) 32kHz
1.5
JL125
(OUT) 32kHz
12
C111
TEST
X102
5
32.768kHz
IC101
SECAM ON/STEREO_OUT
2.7
JL126
CAP TRQ PWM
2.7
SERVO/SYSTEM CONTROL
APC PWM
11
OSD
0
JL129
BLUE BACK
IC101
4.7
HD6433977RC76F
IIC DATA(VIDEO)
4.6
Q
Q
IIC CLK(VIDEO)
3
7
TV/VTR
0
AF REC P
JL100
PB
1
2.6
DRUM QR
4.6
IIC CLOCK
2
4.6
IIC DATA
5
REC PRF
0.3
D151
10
C SYNC
5
2.3
4 fc OUT
8
7
2.3
4 fsc IN
9
1.1
R155
6
D OSC OUT
1M
4
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
JS151
0
L152
R154
CL101
15uH
1k
C196
120p
C157
C161
C158
39p
39p
15p
C195
22u
16V
C192
C153
C154
C194
47p
10u
4.7u
10u
16V
16V
50V
R193
C193
1M
C152
0.022u
4.7u
50V
JL192
B+
NO MARK:REC/PB MODE
R:REC MODE
P:PB MODE
*:IMPOSSIBLE TO MEASURE THE
VOLTAGE AT THE MARKED POINTS.
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2
4
8
9
9
13
14
15
16
B+
A79
M74
R144
220k
B+
C108
15p
15p
JS104
20p
0
B+
R142
R143
220k
470k
20p
V67
C142
0.01u
R163
1k
V63
8
7
6
5
R159
1k
V62
6
3
1
5
1
T61
5
0
8
9
M58
R166
0
HT57
R167
0
HT56
M55
1SS119-25TD
1
2
3
4
V54
R156
22k
R158
R162
10k
10k
C165
Q153
12p
B+
2SD601A-QRS-TX
5
R161
4700
2.6
V65
C168
0.1u
2
R165
10k
R164
C167
1k
0.22u
Q153
M74
PWM-DC CONV
X151
17.734475MHz
M58
M55
C162
7p
V45
HT56
HT57
R131
10k
SIGNAL PATH
Drum speed servo
B+
Drum phase servo
SIGNAL PATH
Drum servo(speed and phase)
VIDEO
Capstan speed servo
SIGNAL
Y/CHROMA
Capstan servo(speed and phase)
m
PB
Ref.signal
c o
.
4-14
2
8
9
9
17
18
19
M83
CAM
M26
DRUM_VS
M38
DRUM_FG
M39
DRUM_PG
M93
CAP_RVS
M40
CAP_FG
M94
CAP_QR
17
M25
CAP_VS
M66
MA-377 BOARD(3/7)
CAP_TRG_PWM
(SEE PAGE 4-15)
M87
MODE_4
M86
MODE_3
M85
MODE_2
M84
MODE_1
M88
T_REEL
M89
S_REEL
M11
S_SENS
M12
T_SENS
C143
0.1u
8
7
6
5
IC141
2
4
9
8
2
9
9
POWER FAIL DET
RESET PULSE GENERATOR
IC142
EEP ROM
1
2
3
4
B+
B+
UN5V_BCAP
B+
UN5V
END_LED
18
MA-377 BOARD(3/7)
DRUM_QR
(SEE PAGE 4-15)
REC_PRF
DGND
P.CONT
CN104
5P
1
GND
JL131
2
DATA
JL132
CHECK
CLK
3
(WRITER JIG)
JL133
4
RESET
JL134
5
WRITE CONT
JL135
REC
REC/PB
PB
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