Sony CMT-M80V / HCD-M80 Service Manual ▷ View online
49
HCD-M80
•
CONTROL BOARD IC601 M30620MCN-A12FP (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
VIDEO SEL
O
Not used
2
RDS-DATA
I
Serial data input from the RDS decoder No t used
3
LCD RS
O
Reset signal output to the liquid crystal display “L”: reset
4
SIRCS
I
Sircs remote control signal input
5
LCD DATA
O
Serial data output to the liquid crystal display
6
LCD STB
O
Strobe signal output to the liquid crystal display
7
LCD SCK
O
Serial data transfer clock signal output to the liquid crystal display
8
BYTE
—
Not used
9
CNVSS
—
Not used
10
XCIN
I
Sub system clock input terminal (32.768 kHz)
11
XCOUT
O
Sub system clock output terminal (32.768 kHz)
12
RESET
I
System reset signal input “L”: reset
For several hundreds msec. after the power supply rises, “L”: is input, then it changes to “H”
For several hundreds msec. after the power supply rises, “L”: is input, then it changes to “H”
13
XOUT
O
Main system clock output terminal (16 MHz)
14
VSS
—
Ground terminal
15
XIN
I
Main system clock input terminal (16 MHz)
16
VCC
—
Power supply terminal (+3.3V)
17
NMI
O
Not used
18
RDS-INT
I
Serial data transfer clock signal input from the RDS decoder No t used
19
SYSCS
I
Chip select signal input from the MPEG video/audio decoder
20
AC-CUT
I
AC cut signal input “L”: AC cut on
21
ST-MUTE
O
Tuner muting on/off control signal output terminal Not used
22
ST-CE
O
Chip enable signal output to the tuner unit
23
ST-DOUT
O
Serial data output to the tuner unit
24
PWM3
O
Not used
25
ST-DIN
I
Serial data input from the tuner unit
26
PWM2
O
Not used
27
ST-CLK
O
Serial data transfer clock signal output to the tuner unit
28
PWM1
O
Not used
29
IIC-CLK
I
IIC data transfer clock signal input terminal Not used
30
IIC-DATA
I
IIC data input terminal Not used
31
TXD1
O
Serial data output terminal Not used
32
RXD1
I
Serial data input terminal Not used
33
V-MUTE
O
Video muting on/off control signal output to the video amplifier “H”: muting on
34
FM ON/STEREO
O
FM power on/off control signal output terminal “H”: FM power on Not used
35
SYSOUT
O
Serial data output to the MPEG video/audio decoder
36
SYSIN
I
Serial data input from the MPEG video/audio decoder
37
SYSCLK
I
Serial data transfer clock signal input from the MPEG video/audio decoder
38
B PLAY
I
Head position detect switch input terminal “L”: forward direction, “H”: reverse direction
39
TC-MUTE
O
Line muting on/off control signal output to the recording/playback equalizer amplifier
“H”: muting on
“H”: muting on
40
TUNER ON
O
Power supply on/off control signal output for the tuner section (+9.5V)
“H”: tuner power on
“H”: tuner power on
41
REC-MUTE
O
Recording muting on/off control signal output to the recording/playback equalizer amplifier
“L”: muting on
“L”: muting on
42
LED1
O
LED drive signal output of the standby indicator “H”: LED on
50
HCD-M80
Pin No.
Pin Name
I/O
Description
43
TC-RELAY
O
Recording/playback selection signal output to the tape section
“L”: playback mode, “H”: recording mode
“L”: playback mode, “H”: recording mode
44
LED2
O
LED drive signal output terminal Not used
45
LED3
O
LED drive signal output of the DSG (Dynamic Sound Generator) indicator “H”: LED on
46
LED4
O
LED drive signal output of the TAPE indicator “H”: LED on
47
LED5
O
LED drive signal output of the CD SYNCHRO indicator “H”: LED on
48
LED6
O
LED drive signal output of the CD indicator “H”: LED on
49
LED7
O
LED drive signal output of the TUNER indicator “H”: LED on
50
HEAD PHONE
DETECT
I
Headphone jack connection detection signal input
“L”: no connected, “H”: headphone connected
“L”: no connected, “H”: headphone connected
51
BACK LIGHT
O
Power on/off control signal output for the liquid crystal display back light “H”: power on
52
VOLUME B
O
Not used
53
VOLUME A
O
Not used
54
SYSRQ
O
Request signal output to the MPEG video/audio decoder
55
1-4
O
Not used
56
SYSOK
O
Acknowledge signal output to the MPEG video/audio decoder
57
TUNED
I
Tuning detection signal input from the tuner unit “L”: tuned
58
B TRG
O
Trigger plunger on/off control signal output “H”: plunger on
59
CAPM-CNT1
O
Capstan/reel motor on/off control signal output “H”: motor on
60
SYSRST
O
Reset signal output to the MPEG video/audio decoder “L”: reset
61
XTSL
O
Not used
62
VCC
—
Power supply terminal (+3.3V)
63
SOFT-TEST
O
Output terminal for the software test Not used
64
VSS
—
Ground terminal
65
CD-POWER
O
Power supply on/off control signal output for the CD/video CD system “H”: power on
66
CD MUTE
O
CD muting on/off control signal output “H”: muting on
67
LOAD-OUT
I
Motor drive signal (open direction) output
68
LOAD-IN
I
Motor drive signal (close direction) output
69
OPEN
I
Disc tray open/close detect switch input terminal “L”: disc tray open, “H”: disc tray close
70
CLOSE
I
Disc tray open/close detect switch input terminal “L”: disc tray close, “H”: disc tray open
71
BASS A
O
Not used
72
BASS B
O
Not used
73
DISPLAY KEY
I
Display key input terminal Not used
74
POWER KEY
I
Power key input terminal
75
PC POWER
I
Not used
76
TREBLE A
O
Not used
77
TREBLE B
O
Not used
78
MDM POWER
O
Not used
79
DA MUTE/
INPUT SEL
O
Not used
80
ALC
O
Automatic limiter control signal output to the recording/playback equalizer amplifier
“L”: limiter on
“L”: limiter on
81
LINE-MUTE
O
Audio line muting on/off control signal output “H”: muting on
82
STBY-RELAY
O
Main system power supply on/off control signal output “H”: power on
83
FAN CONTROL
O
Fan motor control signal output terminal Not used
84
STK-POWER
O
Power on/off control signal output to the power amplifier “H”: power on
51
HCD-M80
Pin No.
Pin Name
I/O
Description
85
HEAD PHONE
MUTE
O
Headphone muting on/off control signal output terminal Not used
86
AMP-CE
O
Chip enable signal output to the electrical volume
87
AMP-DATA
O
Serial data output to the electrical volume
88
AMP-CLK
O
Serial data transfer clock signal output to the electrical volume
89
STK MUTE
O
Muting on/off control signal output to the power amplifier “H”: muting on
90
B SHUT
I
Tape end detect switch input terminal “H” input when the tape end detected
91
B HALF/REC
I
Half detect (side A and B) switch and cassette in detect switch input terminal (A/D input)
92
MODEL-IN
I
Model setting terminal
93
SPEC-IN
I
Destination setting terminal
94, 95
KEY2, KEY1
I
Key input terminal (A/D input)
96
AVSS
—
Ground terminal (for analog system)
97
KEY3
I
Key input terminal (A/D input)
98
VREF
O
Reference voltage (+3.3V) input terminal (for analog system)
99
AVCC
—
Power supply terminal (+3.3V) (for analog system)
100
DC-DETECT
I
Protect on/off control signal input from the speaker protect circuit “L”: protect on
52
HCD-M80
7-1. PANEL (SIDE) SECTION
SECTION 7
EXPLODED VIEWS
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• Abbreviation
EA
: Saudi Arabia model
SP
: Singapore model
TH
: Thai model
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
1
#1
#1
#1
#1
#1
#1
#1
#6
2
chassis (lower) section
front panel section
3
top panel section
not supplied
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
4-238-706-01 PANEL (SIDE) (L) (SILVER)
1
4-238-706-11 PANEL (SIDE) (L) (WHITE)
2
4-243-443-01 SCREW (CHASSIS) (+BTP) (4X8)
3
4-238-707-01 PANEL (SIDE) (R) (SILVER)
3
4-238-707-11 PANEL (SIDE) (R) (WHITE)
#1
7-685-547-14 SCREW +BTP 3X10 TYPE2 N-S
#6
7-685-546-14 SCREW +BTP 3X8 TYPE2 N-S
The components identified by
mark 0 or dotted line with mark
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
Click on the first or last page to see other CMT-M80V / HCD-M80 service manuals if exist.