Read Sony CFD-Z500 / CFD-Z501 / CFD-Z550 Service Manual online
BATTERY board
POWER board
BACK-UP board
REC SW board
SENSOR board
(CFD-Z550)
(CFD-Z550)
CD MOTOR board
CD board
MAIN board
CONTROL board
– 15 –
– 16 –
5-2. CIRCUIT BOARDS LOCATION
5-1. IC PIN DESCRIPTION
• IC801 CXP83620-008Q (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
C-SCOR
I
CD SCOR input
2
RMC
I
Sircs receiver input
3
MOTOR-CONT
O
Motor control signal output
4
NC
—
Contact to pin 78.
5
C-SEN1
I
CD SENSE-1 input
6
C-SEN2
I
CD SENSE-2 input
7
C-SQCK
O
CD Sub-Q read clock output
8
C-SQSO
I
CD Sub-Q data input
9
C-RST
O
CD reset output
10
C-CLK
O
CD serial clock output
11
C-LAT
O
CD serial latch output
12
C-DATA
O
CD serial data output
13
REC
I
Tape record signal input L: REC
14
ST-IN
I
Stereo signal input
15
NC
—
Not used.
16
FM/AM
O
Radio band output
17
NC
—
Not used.
18
V-LAT
O
Volume latch output
19
V-DATA
O
Volume data output
20
V-CLK
O
Volume clock output
21
C-DOOR
I
CD door open/close switch input L: Close
22
P-CON
O
System power control output
23 – 25
KEY-1 – 3
I
Key input
26
VH
I
Operation voltage detection input
27
INIT
O
Initial set signal output
28
VERSION
I
Mode set pin
29
VM
I
Voltage detection input
30
RST
I
System reset input
31
EXTAL
I
Oscillation input (4.19 MHz)
32
XTAL
O
Oscillation output (4.19 MHz)
33
VSS
—
GND
34
VL
O
LCD drive port ON/OFF output
35 – 37
VLC-3 – 1
O
LCD drive voltage terminal
38 – 41
COM0 – 3
O
LCD drive common output
42 – 59
SEG0 – 17
O
LCD drive segment output
60 – 65
NC
—
Not used.
66
A-MUTE
O
Audio mute output H: Mute
67
SOUND
O
Graphic equalizer on/off signal output
68
C-MUTE
O
CD block mute output H: Mute
69
TAPE
O
Tape function output H: Tape
70
RADIO
O
Tuner function output H: Radio
71
CD
O
CD function output L: CD
72
VDD
—
Power supply pin (+5 V)
73
TX
O
Oscillation output (150 kHz)
74
TEX
I
Oscillation input (150 kHz)
75
NC
—
Not used.
76
ISS-A
O
Not used.
77
ISS-B
O
Not used.
78
NC
—
Contact to pin 4.
79
TC-PLAY
I
Tape play switch input L: Tape
80
REGCK
I
Regulator check signal input H: ON
SECTION 5
DIAGRAMS
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