SLV-GA35MK2, SLV-GA36, SLV-GA45AV, SLV-GA55MK2, SLV-GA59, SLV-GF85MK2, SLV-GF86, SLV-SA34 - Sony VCR Service Manual (repair manual). Page 38

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5-4
5-4 E
5-5.
SER
V
O/SYSTEM  CONTR
OL  MICR
OPR
OCESSOR  PIN  FUNCTION (MA-366  BO
ARD  IC101)
Pin No.
Pin Name
I/O
Function
1
REC PRF
I
E
rasing protection tab
. cassette in detection
2
D
 GND
Digital circuit g
round
3
KEY 1
I
Function k
e
y analog v
o
ltage input 1
4
KEY 2
I
Function k
e
y analog v
o
ltage input 2
5
KEY 3
I
Function k
e
y analog v
o
ltage input 3
6
KEY 4
I
Function k
e
y analog v
o
ltage input 4
7
S
 SENS
I
Supply end sensor signal input
8
V
 SWP ADJ
I
V
ideo s
w
itching position adjustment
9
A
 SWP ADJ
I
A
udio s
w
itching position adjustment
10
MESECAM DET
I
MESECAM detect signal input 
“H
” :
 MESECAM
11
V ENV
I
V
ideo pla
ybac
k signal en
v
e
lope
12
A ENV
I
H
iFi audio pla
ybac
k signal en
v
e
lope
13
T SENS
I
T
ak
e-up end sensor signal input
14
NC
Not used
15
AN +5V
Analog circuit g
round
16
RESET
I
Reset signal input
17
REC P
O
“L
” :
 output when REC pause mode
18
P
A
L
O
“H
” :
 P
AL/MESECAM (video b
loc
k
 control signal output)
19
A
U
 MUTE
O
“H
” :
 audio mute signal output
20
NTSC
O
“H
” :
 NTSC (video b
loc
k control signal output)
21
KILL IN
I
Color killer detect signal input
22
VCC (+5V)
P
o
w
e
r supply
23
AF SWP
O
AF s
w
itching pulse output
24
RF SWP
O
RF s
w
itching pulse output
25
CAP 
VS
O
Capstan error signal output
26
DR
UM 
VS
O
D
rum motor error signal output
27
QVD
O
Quasi 
VD pulse output
28
NC
Not used
29
SECAM
O
SECAM CONT SECAM 
“L
30
NC
Not used
31
CTL+
I/O
CTL head signal input/output
32
CTL
I/O
CTL head signal input/output
33
VSS GND SER
V
O
Ser
v
o
 circuit g
round
34
CTL AMP 1
I
CTL Amp
. control (Gain set)
35
CTL AMP 2
I
CTL Amp
. control (Gain set)
36
CTL AMP 3
I
CTL Amp
. control (Gain set)
37
CTL AMP OUT
O
CTL Amp
. output (F
or chec
k)
38
DR
UM FG
I
D
rum FG Schmidt amp
. input
39
DR
UM PG
I
D
rum PG Schmidt amp
. input
40
CAP FG
I
Capstan FG Schmidt input
41
+5V SER
V
O
Ser
v
o
 circuit po
w
e
r supply
42
+5V OSD
OSD circuit po
wer supply
43
VIDEO IN
I
V
ideo signal input
44
VREF
I
Ref
erence bias and clamp bias po
wer pin
45
VIDEO OUT
O
V
ideo signal output
46
CHAR.BIAS
Not used
47
AFC LPF
I
AFC LPF pin input
48
AFC OSC
I
AFC oscillator pin input
49
VSS OSD
OSD circuit g
round
50
DOSC IN
I
OSD dot cloc
k oscillator (input)
Pin No.
Pin Name
I/O
Function
51
DOSC OUT
O
OSD dot cloc
k oscillator (output)
52
2FSC OUT
O
OSD 2fsc oscillator ter
minal (output)
53
2FSC IN
I
OSD 2fsc oscillator ter
minal (input)
54
C SYNC
I
Composite Sync signal input
55
MESECAM OUT
O
“H
” :
 MESECAM (video b
loc
k
 control signal output)
56
SHARP 1
O
“H
” :
 Activ
e (SHARPNESS control)
57
SHARP 2
O
“H
” :
 Activ
e (SHARPNESS control)
58
CHR
OMA 1
O
“H
” :
 Activ
e (CHR
OMA control)
59
CHR
OMA 2
O
“H
” :
 Activ
e (CHR
OMA control)
60
CHR
OMA 3
O
“H
” :
 Activ
e (CHR
OMA control)
61
CHR
OMA 4
O
“H
” :
 Activ
e (CHR
OMA control)
62
MODE 1
I
Mechanism section CAM encoder input (data 1)
63
MODE 2
I
Mechanism section CAM encoder input (data 2)
64
MODE 3
I
Mechanism section CAM encoder input (data 3)
65
MODE 4
I
Mechanism section CAM encoder input (data 4)
66
CAP PWM
O
Capstan PWM output
67
CAP R
V
S
O
Capstan re
v
e
rse control signal 
“L
” :
 when re
ve
rse
68
TEST
I
F
ix
ed to ground
69
32kHz OUT
Not used
70
32kHz IN
Not used (Fix
ed to +5V)
71
VSS (SYS)
Ground
72
10MHz IN
I
System cloc
k ter
m
inal (10MHz)
73
10MHz OUT
O
System cloc
k ter
m
inal (10MHz)
74
END LED
O
T
op/End LED ON/OFF control
75
D
ANCE 4 LED
O
““
L”
 :
 On, 
“H
” :
 Off (LED)
76
CASSETTE IN LED
O
““
L”
 :
 On, 
“H
” :
 Off (Cassette in LED)
77
D
ANCE 3 LED
O
““
L”
 :
 On, 
“H
” :
 Off (LED)
78
D
ANCE 2 LED
O
““
L”
 :
 On, 
“H
” :
 Off (LED)
79
D
ANCE 1 LED
O
““
L”
 :
 On, 
“H
” :
 Off (LED)
80
PO
WER R LED
O
““
H
” :
 Standb
y,
 “
L”
 :
 P
o
wer on (ON/ST
ANDBY LED)
81
PO
WER G LED
O
““
L”
 :
 Standb
y,
 “
H
” :
 P
o
wer on (ON/ST
ANDBY LED)
82
REMOCON
I
Remote control signal (SIRCS) input
83
TV/O
THER
I
“Connect LINE-1 select 
“H
” :
 Other
“L
” : 
T
V
84
SYNCHR
O REC LED
O
““
H
” :
 On, 
“L
” :Off (SYNC REC LED)
85
SECAM DET
I
SECAM DET IN.
 SECAM 
“H
86
PICTURE LED
O
“H
” :
 Activ
e (RESOLUTION CONTR
OL 
II
 LED)
87
REC LED
O
““
H
” :
 On, 
“L
” :Off (REC LED)
88
T REEL
I
T
ak
e-up reel FG input
89
S REEL
I
Supply reel FG input
90
HiFi LED
O
““
H
” :
 On, 
“L
” :Off (HiFi LED)
91
HiFi L LED
O
““
H
” :
 On, 
“L
” :Off (Lch LED)
92
TV/VTR
O
RF output 
TV/VTR select
93
HiFi R LED
O
““
H
” :
 On, 
“L
” :
 Off (Rch LED)
94
SHARPNESS PWM
O
V
ideo IC shar
pness v
o
ltage
9
5
CAM
O
“CAM motor control 
“H
” :
 F
o
rw
ard, 
“M
” :
 Br
ak
“L
” :
 Re
v
e
rse
96
CAP QR
O
Capstan step dr
iving
97
AF CLK
O
I2C-b
us cloc
k (HiFi)
98
AF D
A
T
A
O
I2C-b
us data (HiFi)
99
V CLK
O
I2C-b
us cloc
k (Video)
100
V D
A
T
A
O
I2C-b
us data (Video)
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