Read Sony CDX-C680 / CDX-C780 Service Manual online
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• IC501 MB90574PFV-G-123-BND (SYSTEM CONTROL) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
SEKOUT
O
SEEK OUT output
2
AF-SEEK
O
AF SEEK output (Not used in this set.)
3
WIDE
O
WIDE/NARROW select output
4
ST-MONO
I/O
Use a thing both as ST-IND display input and force MONO output.
5
TUNMUTE
O
Tuner mute output
6
FM-ON
O
FM ON output
7
TU-ON
O
Tuner ON output
8
VCC
—
Power supply pin (+5 V)
9
CSV-RST
O
Audio composition IC reset output (Not used in this set.)
10
BUSON
O
Bus ON control output
11
SYSRST
O
System reset output
12
DOORSW
I
Door OPEN/CLOSE detection input
13
LCDSO
O
LCD serial data output
14
LCDCKO
O
LCD serial clock output
15
BEEP
O
BEEP output
16
LCDCE
O
LCD chip enable output
17
UNISI
O
Serial data input
18
UNISO
O
Serial data output
19
UNICKIO
I/O
Serial clock input/output
20
SD-IN
I
Signal detector input
21
CSV-SO
O
Audio composition serial data output (Not used in this set.)
22
CSV-CKO
O
Audio composition serial clock output (Not used in this set.)
23
CSV-CE
O
Audio composition chip enable output (Not used in this set.)
24
SIRCS
I
Remote commander input
25
PLLSI
I
PLL data input
26
PLLSO
O
PLL data output
27
PLLCKO
O
PLL clock output
28
PLLCE
O
PLL chip enable output
29
ILL-ON
O
Illumination power control output
30
DIMMER
I/O
Dimmer control input/output
31
TIRIND
O
TIR indicator control output (Not used in this set.)
32
LCDINH
O
LCD blank display control output
33
VSS
—
GND
34
C
—
Power stabilization capacitor pin
35
AD-ON
O
Power control output of A/D conversion.
36, 37
RE-IN0, 1
I
Rotary encoder input 0, 1
38
DVCC
—
D/A converter VREF input
39
DVSS
—
GND of D/A converter.
40
NCO
O
Not used.
41
LCDANG
O
LCD view angle alignment output
42
AVCC
—
Analog power supply pin (+5 V)
43
AVRH
—
A/D converter VREF+ input
44
AVRL
—
A/D converter VREF- input
45
AVSS
—
Analog GND
46, 47
KEYIN0, 1
I
Key input 0, 1
48
RC-IN0
I
Rotary commander input 0
49
DSTSEL0
I
Destination select input 0 (Fixed at “L” in this set.)
50
DSTSEL1
I
Destination select input 1 (Fixed at “L” in this set.)
51
DSTSEL2
I
Destination select input 2 (Fixed at “H” in this set.)
52
MTP
I
Tuner multi-pass input (Not used in this set.)
53
VSM
I
S-Meter voltage detection input
54
VCC
—
Power supply pin (+5 V)
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