Sony CDX-GT320 / CDX-GT32W / CDX-GT370 / CDX-GT370S Service Manual ▷ View online
29
CDX-GT32W/GT320/GT370/GT370S
• IC PIN DESCRIPTIONS
• IC501 MB90F045PF-G-9058-SPE1 (SYSTEM CONTROL) (MAIN BOARD (3/4))
Pin No.
Pin Name
I/O
Pin Description
1
AREASEL0
I
Destination function setting pin 0
2
AREASEL1
I
Destination function setting pin 1
3
AREASEL2
I
Destination function setting pin 2
4
AREASEL3
I
Destination function setting pin 3
5
BEEP
O
BEEP signal output to power amplifier
6
CYRIL_SEL
I
Cyril correspondence discrimination signal input “L”: No correspondence
7
NOSE_SW
I
Front panel attachment detect signal input “L”: Panel on, “H”: Panel off
8
DIAG
I
Status signal input from power amplifier
9
VOLATT
O
Electronic volume attenuate control signal output
10
NCO
O
Not used. (Open)
11
VSS
—
Ground pin
12
TUATT
O
Tuner mute control signal output
13
NSMASK
O
Noise mask signal output Not used in this set. (Open)
14
SA OUT
O
Serial data signal output for electronic volume spectrum analyzer
15
SA CLK
O
Serial clock signal output for electronic volume spectrum analyzer
16 to 22
NCO
O
Not used. (Open)
23
VCC5
—
Power supply pin (+3.3V)
24
EEP_SIO
I/O
EEPROM bus serial data signal input/output
25
EEP_CKO
O
EEPROM bus serial clock signal output
26
AMPSTB
O
Stand-by signal output to power requlation
27
LCD_CE
O
Chip enable signal output to LCD driver
28
LCD_SO
O
Serial data signal output to LCD driver
29
LCD_CKO
O
Serial clock signal output to LCD driver
30
RDS ON
O
RDS (radio data system) ON signal output Not used in this set. (Open)
31
RE-IN0
I
Rotary encoder signal input 0
32
RE-IN1
I
Rotary encoder signal input 1
33
I2C_CKO
O
I2C bus serial clock signal output
34
I2C_SIO
I/O
I2C bus serial data signal input/output
35
DAVDD
—
A/D converter power supply pin (+3.3V)
36
AVRH
—
A/D converter external reference power supply pin (+3.3V)
37
DAVSS
—
A/D converter Ground pin
38
QUALITY
I
Noise detect signal input
39
VSM
I
S-meter voltage detect signal input
40
KEYIN1
I
Key signal input 1
41
KEYIN0
I
Key signal input 0
42
VSS
—
Ground pin
43
RC_IN0
I
Rotary commander key signal input Not used in this set. (Pull up)
44, 45
NCO
O
Not used. (Open)
46
SA IN
I
Serial data signal input for electronic volume spectrum analyzer
47, 48
NCO
O
Not used. (Open)
49
MD0
I
Operation mode setting pin 0 (Pull up)
50
MD1
I
Operation mode setting pin 1 (Pull up)
51
MD2
I
Operation mode setting pin 2 (Pull down)
52
KEYACK
I
Key acknowledgment detect signal input
53
TU_ATTIN
I
Tuner mute zero cross detect signal input Not used in this set. (Pull down)
54
BUIN
I
Back-up power supply detect signal input
55
NCO
O
Not used. (Open)
56
DAVN
I
RDS data block synchronized detect signal input Not used in this set. (Pull down)
30
CDX-GT32W/GT320/GT370/GT370S
57
NCO
O
Not used. (Open)
58
UNISI
I
S-BUS data signal input
59
UNISO
O
S-BUS data signal output
60
UNISCK
O
S-BUS clock signal output
61
NCO
O
Not used. (Open)
62
ILLUMI SEL
I
Illumination voltage setting signal input “H”: 10.4 V, “L”: 9.0 V
63
NCO
O
Not used. (Open)
64
SIRCS
I
Remote control signal input
65 to 67
NCO
O
Not used. (Open)
68
FLASH_W
I
Memory mode select signal input Not used in this set. (Pull up)
Normally “H” input: Single chip mode, after reset “L”: Flash write mode
69, 70
NCO
O
Not used. (Open)
71
RC_IN1
I
Rotary commander shift key signal input Not used in this set. (Pull up)
72
ACC_IN
I
Accessory power supply detect signal input
73
TESTIN
I
Test mode detect signal input Not used in this set. (Pull up)
74
TELATT
I
Telephone attenuate detect signal input Not used in this set. (Pull down)
75
NCO
O
Not used. (Open)
76
AD_ON
O
A/D converter power supply control signal output
77
RESET
I
System reset signal input
78
NCO
O
Not used. (Open)
79
XOUT
O
Low speed operation clock signal output (32.768 kHz)
80
XIN
I
Low speed operation clock signal input (32.768 kHz)
81
VSS1
—
Ground pin
82
OSCIN
I
High speed operation clock signal input (18.432 MHz)
83
OSCOUT
O
High speed operation clock signal output (18.432 MHz)
84
VCC3
—
Power supply pin (+3.3 V)
85
DEMOSEL
I
DEMO select signal input “H”: DEMO on, “L”: DEMO off
86
ATT
O
Audio mute control signal output
87
BUSON
O
BUS ON signal output
88
SYSRST
O
System reset signal output
89 to 92
NCO
O
Not used. (Open)
93
Z-MUTE
I
CD zero cross mute detect signal input
94
B OUT SEL
I
Black out with/without discrimination select signal input “H”: Black out
95, 96
NCO
O
Not used. (Open)
97
DIM_SEL
I
Dimmer select signal input “H”: Dimmer, “L”: No dimmer
Not used in this set. (Pull down)
98
CD_ON
I
CD mechanism servo power supply control request signal input
99
CDM_ON
I
CD mechanism deck power supply control request signal input
100
COL_SW
I
Illumination color select signal input Not used in this set. (Pull down)
“H”: Two colors selection/initial slave, amber, “L”: Color/slave, amber
Pin No.
Pin Name
I/O
Pin Description
31
CDX-GT32W/GT320/GT370/GT370S
SECTION 6
EXPLODED VIEWS
1
X-2179-121-1 PANEL ASSY, SUB
2
2-583-939-01 SCREW (+B 2X4)
3
X-2179-691-1 LOCK ASSY
4
2-348-996-01 SCREW (+PTT 2.6X6), GROUND POINT
5
A-1309-177-A MAIN BOARD, COMPLETE (GT32W/GT320)
5
A-1309-235-A MAIN BOARD, COMPLETE (GT370/GT370S)
6
2-345-298-01 PLATE (TU), GROUND
7
1-833-974-31 CONNECTION CORD FOR AUTOMOBILE
(POWER)
FU601
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
TU1
A-3220-960-B TUNER UNIT (TUX-032) (GT370/GT370S)
TU1
A-3220-961-B TUNER UNIT (TUX-032) (GT32W/GT320)
#1
7-685-792-09 SCREW +PTT 2.6X6 (S)
#2
7-685-790-01 SCREW +PTT 2.6X4 (S)
#3
7-685-793-09 SCREW +PTT 2.6X8 (S)
#4
7-685-794-09 SCREW +PTT 2.6X10 (S)
#5
7-685-134-19 SCREW +P 2.6X8 TYPE2 NON-SLIT
#6
7-621-284-40 SCREW +P 2.6X10
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
NOTE:
•
The mechanical parts with no reference
number in the exploded views are not supplied.
number in the exploded views are not supplied.
•
Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
•
Abbreviation
CND
CND
: Canadian model
•
-XX and -X mean standardized parts, so
they may have some difference from the
original one.
they may have some difference from the
original one.
•
Color Indication of Appearance Parts
Example :
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
•
Accessories are given in the last of this parts list.
6-1.
MAIN SECTION
R
R
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque 0 sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
marque 0 sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
not supplied
not supplied
FU601
not supplied
TU1
not supplied
not supplied
#1
#1
#1
#3
#4
#4
#4
#6
#5
#3
#2
#1
MG-101TC-188//C
A
A
B
B
1
2
3
4
7
6
A
5
32
CDX-GT32W/GT320/GT370/GT370S
51
A-1309-182-A PANEL COMPLETE ASSY, FRONT (GT32W)
51
A-1309-229-A PANEL COMPLETE ASSY, FRONT (GT320)
51
A-1309-237-A PANEL COMPLETE ASSY, FRONT (GT370)
51
A-1309-245-A PANEL COMPLETE ASSY, FRONT (GT370S)
52
X-2178-983-1 BUTTON ASSY (S)
53
3-251-320-01 EMBLEM (NO. 2.5), SONY
54
X-2179-122-1 PANEL (SV) ASSY, FRONT (GT32W)
54
X-2179-123-1 PANEL (SV) ASSY, FRONT (GT320)
54
X-2179-124-1 PANEL (SV) ASSY, FRONT (GT370)
54
X-2179-125-1 PANEL (SV) ASSY, FRONT (GT370S)
55
X-2186-575-1 KNOB (VOL) (SV) ASSY
56
2-349-626-01 SPRING (RELEASE)
57
1-780-533-11 CONDUCTIVE BOARD, CONNECTION
58
3-214-226-11 ILLUMINATOR (LCD)
59
3-214-215-01 PANEL, BACK
60
3-250-543-91 SCREW (+B P-TITE M2)
J901
1-820-624-11 SMALL TYPE JACK (VERTICAL) (AUX)
LCD901 1-802-508-11 DISPLAY PANEL, LIQUID CRYSTAL
(GT32W/GT320)
LCD901 1-802-509-11 DISPLAY PANEL, LIQUID CRYSTAL
(GT370/GT370S)
RE901
1-479-902-21 ENCODER, ROTARY (PUSH SELECT/VOLUME)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
6-2.
FRONT PANEL SECTION
LCD901
not supplied
not supplied
not supplied
not supplied
(KEY board)
(KEY board)
not supplied
not supplied
not supplied
not supplied
51
52
53
54
55
56
57
58
59
60
60
RE901
J901
Click on the first or last page to see other CDX-GT320 / CDX-GT32W / CDX-GT370 / CDX-GT370S service manuals if exist.