Read Sony CDX-MP80 Service Manual online
18
CDX-MP80
• IC501 MB90574CPMT-G-397-BNDE1 (SYSTEM CONTROL) (MAIN BOARD) (US, Canadian model)
• IC501 MB90574CPMT-G-398-BNDE1 (SYSTEM CONTROL) (MAIN BOARD) (AEP, UK model)
• IC501 MB90574CPMT-G-398-BNDE1 (SYSTEM CONTROL) (MAIN BOARD) (AEP, UK model)
Pin No.
Pin Name
I/O
Pin Description
1 – 4
NC
O
Not used. (Open)
5
ATT
O
System mute control signal output
6
SYS RST
O
System reset signal output
7
NC
O
Not used. (Open)
8
VCC
—
Power supply pin (+5 V)
9
AMP ATT
O
Power amplifier mute signal output
10
T.ROM SDA
I/O
Tuner unit EEPROM data input/output
11
T.ROM SCK
O
Tuner unit EEPROM clock output
12
NOSE SW/RX
I
Nose SW detect signal input
13
TX
O
Flash CPU write-in data output
14
BUS ON
O
BUS ON control signal output
15
BEEP
O
Beep signal output
16
TEL ATT
I
Telephone mute detect signal input
17
UNI SI
I
SONY BUS data input
18
UNI SO
O
SONY BUS data output
19
UNI CLK
O
SONY BUS clock output
20 – 23
NC
O
Not used. (Open)
24
SIRCS
I
Wireless remote data input
25 – 30
NC
O
Not used. (Open)
31
E VOL ATT
O
Electronic volume mute signal output
32
NC
O
Not used. (Open)
33
VSS
—
Ground pin
34
C
—
Condenser pin for voltage stabilizer
35
CDON IN
I
CD On signal input
36
NC
O
Not used. (Open)
37
FSW SFT
O
OSC frequency shift signal output for DC/DC converter
38
DVCC
—
Power supply pin (+5 V)
39
DVSS
—
Ground pin
40, 41
NC
O
Not used. (Open)
42
AVCC
—
Power supply pin (+5 V)
43
AVRH
—
Power supply pin (+5 V)
44
AVRL
—
Ground pin
45
AVSS
—
Ground pin
46
KEY IN0
I
Key input 0
47
TEMP
I
Tempareture detect signal input
48
RC IN0
I
Rotary commander input 0
49
FP-I DET
I
Front panel motor current detect signal input
50
QUAL
I
Tuner noise detction signal input (AEP, UK model)
51
TR-I DET
I
Tray motor current detect signal input
52
MPTH
I
Tuner multi-pass detect signal input (AEP, UK model)
53
VSM
I
S-meter voltage detect signal input
54
VCC
—
Power supply pin (+5 V)
55
AMP ON
O
AMP ON control signal output
56
NS MASK
O
Tuner noise masking control signal output
57
DDC ON
O
DC/DC converter power control signal output
58
OPEN SENS
I
Tray open detection signal input
59
CLOSE SENS
I
Traay close detect signal input
60
LED ON
O
Tray illumination ON signal output
61
T CLOSE
O
Tray loading motor output
62
T OPEN
O
Tray loading motor output
63
VSS
—
Ground pin
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