Read Sony HCD-GX20 / MHC-GX20 Service Manual online
36
HCD-GX20
5-15. IC Pin Function Description
• IC601 LC876662W-5Z15 Master Control (PANEL Board)
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 to 41
42 to 45
46
47 to 54
55
to
65
66
67
68
69
70
71
72
73
74
75
76
77
78
I/O
O
O
O
O
O
O
I
I
I
–
I
I
O
–
I
O
–
I
I
O
I
I
I
I
I
I
I
I
I
O
O
–
O
O
I
I
I
I
I
I
–
O
O
O
O
I
I
Pin Name
PWR LED
P.S.RELAY
SYS MUTE
CD MOTOR +
CD MOTOR –
CD RWC
VR ENCODER B
VR ENCODER A
BU1924/FLASH DATA
FLASH R/W
RESET
XT1
XT2
VSS
CF1
CF2
VDD1
TAPE A: STAT
TAPE B: STAT
VACS
SPEANA IN L
SPEANA IN R
KEY INPUT 0
KEY INPUT 1
KEY INPUT 2
PWR SW, DISP SW
REMOCON IN
PWR DOWN
BU1924 CLK
G12 to G01
P01 to P04
VDD
P05 to P11
P12 OP. OUT 10(SW11)
to
P22 OP. OUT 00(SW01)
OPTION SW INPUT
CD CLOSE
CD DRF
CD WRQ
CD BUSY
(PIC UP/DOWN)SW
CD NUMBER SENSOR
VDD
CD MUTE
CD SLED (+)
CD SLED (–)
CD RESET
HEAD PHONE SENSOR
TUNER TUNED
Description
PWR LED control signal output
Standby relay control signal output
System muting signal output
CD changer motor control signal output
CD changer motor control signal output
Read/write control signal output
Volume signal input from the rotary encoder
Volume signal input from the rotary encoder
Data input from the RDS decoder IC
Fixed at “H”
Reset input
Connection for a crystal resonator
Connection for a crystal resonator
Ground
Connection for a ceramic resonator
Connection for a ceramic resonator
Power sypply
TAPE A switches signal input
TAPE B switches signal input
VACS control signal output
Spectrum analyzer signal input
Spectrum analyzer signal input
Function key input
Function key input
Function key input
POWER switch or DISP switch key input
Data input from the remote control receiver
Power down signal input
Clock input from the RDS decoder IC
FL tube grid signal ouput
FL tube segment signal ouput
Power supply
FL tube segment signal ouput
FL tube segment signal ouput or switch signal output
Switch signal input
CD tray close switch signal input
RF level detection signal input
Subcode Q standby signal input
CD BU up/down switch signal input
Table address sensor switch signal input
Power supply
CD audio muting signal output
Sled motor control signal output
Sled motor control signal output
CD reset signal output
Headphone detection signal input
Tuning a frequency signal input
Click on the first or last page to see other HCD-GX20 / MHC-GX20 service manuals if exist.