Sony RMT-V267B, Service Manual

Page: 63 / 91

5-3
5-6. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS
(MA-360 BOARD IC161)
Pin No.
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
Pin Name
RF SWP
AF REC P
AF REC
QVD
AUTO PRESET
FE ON
N.C
L.LINK
CAM 2
N.C
TA MUTE
N.C
N.C
N.C
CIN (REC PRF)
AV CONT
N.C
MODE 4
MODE 3
MODE 2
MODE 1
ENV SW
S IN 0
S OUT 0
S CLK
ASURA CS
SERVO
CAP TRQ PWM
N.C
CAP RVS
A MUTE
T/E LED
CAP STOP
FULL ERS
N.C
I2C DATA
N.C
I2C CLOCK
MP
ASURA RESET
GND
XTAL
EXTAL
N.C
DRUM PG
DRUM FG
CAP FG
NICOL ON
CBC POWER
F MONO
I/O
O
O
O
O
O
O
O
I
O
I
I
I
I
I
I
I
O
I
I
O
O
O
O
O
O
O
I/O
I/O
—
I
—
O
I
—
I
I
I
O
O
O
Function
RF switching pulse output.
“H” when HiFi audio REC.
“H” output when HiFi audio
recording.
Quasi VD pulse output.
“H” during auto preset.
Flying erase ON/OFF.
Not used.
Laser Link control out.
Cam motor control.
Not used.
Tuner audio mute. H: Mute
Not used.
Not used.
Not used.
Erasing protection tab, cassette in
detection signal input.
Not used.
Not used.
Cam encoder signal input.
Cam encoder signal input.
Cam encoder signal input.
Cam encoder signal input.
Video envelope mode detect signal
(SP or EP)
Serial communication signal.
Serial communication signal.
Serial communication signal.
Servo/system control microcomputer
chip select signal.
Not used.
PWM output for capstan torque
control.
Not used.
Capstan reverse control “L” when
reverse.
“H” when audio mute.
Tape top /end sensors driver.
Capstan stop signal output.
Full erase control.
Not used.
Serial communication data.
Not used.
Serial communication clock.
Ground.
System reset signal.
Ground.
System clock (16 MHz).
System clock (16 MHz).
Ground.
Drum PG input.
Drum FG input.
Capstan FG input.
NICOL control signal out.
Cable box control signal out.
Forced mono.
Pin No.
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
Pin Name
SW2
GND
VDD
VDD
N.C
AV ADJ
N.C
N.C
AF ENV
RF ENV
T SENS
S SENS
VDD
AMP VSS
CTL HEAD (Y)
CTL HEAD (X)
HEADL (+)
HEADL (–)
CTL FAMPI (+)
CTL FAMPI (–)
CTL AGND
CTL SAMPI
CTL FAMPO
AMP VDD
ANOUT
S REEL FG
T REEL FG
CAP DA
DRM DA
N.C
N.C
VSYNC
N.C
18 V_CONT
24 V_CONT
TEX
TX
VSS
VDD
VDD
FAST SEARCH
HA SWP
C ROT
POWER SAVE CONT
POWER SAVE C+
MOD CONT
SP
TV/VTR
STEP PLS
AF SWP
I/O
O
—
I
I
—
I
—
—
I
I
I
I
I
—
I/O
I/O
O
O
I
I
O
I
O
I
O
I
I
O
O
—
I
O
O
—
I
I
O
O
O
O
O
O
O
O
O
O
Function
Not used.
Ground.
UNSW 5 V.
UNSW 5 V.
Ground.
Adjustment mode.
Ground.
Ground.
HiFi audio playback signal envelope.
Video playback signal envelope.
Take-up end sensor.
Supply end sensor.
UNSW 5 V.
Ground.
CTL signal I/O.
CTL signal I/O.
CTL signal.
CTL signal.
CTL first AMP input.
CTL first AMP input.
Ground.
CTL second AMP input.
CTL first AMP output.
5 V.
Control signal output for check pin.
Supply reel FG input.
Take-up reel FG input.
Capstan error D/A output.
Drum error D/A output.
UNSW 5 V.
Ground.
Composite sync signal input.
Not used.
18 V control, when the high speed
mode.
24 V control, when the high speed
mode.
Not used.
Not used.
Ground.
UNSW 5 V.
UNSW 5 V.
CTL level control signal “L” when
high speed mode.
Video head switching pulse signal
output.
Color rotate pulse signal output.
Not used.
Not used.
Not used.
Tape speed mode control signal “L”
when SP mode.
TV/VTR control signal output.
Step pulse “H” when capstan step
driving.
AF switching pulse output.