Sony CDX-GT450U / CDX-GT457UE / CDX-GT500U / CDX-GT500US / CDX-GT505U / CDX-GT50UMS Service Manual ▷ View online
CDX-GT50UMS/GT450U/GT457UE/GT500U/GT500US/GT505U
25
IC401 BD3467FV-E2 (MAIN Board (3/3))
BUS_LCH 1
INPUT SELECTOR
(2 SINGLE-END AND 4 STEREO ISO)
MUTE
MAIN GAIN
ADJUST
SUB GAIN
ADJUST
I2C
BUS
LOGIC
2ND ORDER LOW-PASS FILTER
INPUT GAIN
AU_OUT_SL
40
BUS_RCH 2
TU_LCH 3
TU_RCH 4
AUX_LCH 5
AUX_GND 6
AUX_RCH 7
ISO
GND
AMP
ISO
GND
AMP
DP1 8
DN 9
DP2 10
ISO
GND
AMP
ISO
GND
AMP
EP1 11
EN 12
EP2 13
ISO
GND
AMP
ISO
GND
AMP
FP1 14
FN1 15
ISO
GND
AMP
FN2 16
FP2 17
NCO 18
NCO 19
NCO 20
ISO
GND
AMP
AU_OUT_SR
39
AU_OUT_RL
38
AU_OUT_RR
37
AU_OUT_FL
36
AU_OUT_FR
35
AU_IN_FR
34
AU_OUT_LCH
28
AU_OUT_RCH
27
VCC (8.5V)
26
AU_IN_FL
33
AU_IN_RR
32
AU_IN_RL
31
AU_IN_SUB
30
NCO
29
FADER
ATT
FADER
ATT
FADER
ATT
FADER
ATT
FADER
ATT
FADER
ATT
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
+
+
VCC
FIL
25
GND
24
I2C_SIO
23
I2C_SCK
22
MUTE
21
CDX-GT50UMS/GT450U/GT457UE/GT500U/GT500US/GT505U
26
• IC Pin Function Description
MAIN BOARD (2/3) IC501 R5F3650KBDZ99FA (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
LCD_SO
O
Serial data output for LCD driver
2
LCD_CLK
O
Serial clock signal output for LCD driver
3
NOSE_SW
I
Front panel detach detect signal input (Fixed at L in this set)
4
SIRCS
I
SIRCS signal input
5
UNISO
O
SONY BUS serial data output (Not used in this set)
6
UNISI
I
SONY BUS serial data input (Fixed at L in this set)
7
UNISCK
O
SONY BUS serial clock signal output (Fixed at L in this set)
8
BYTE
I
External data bus width select signal input (Connect to VSS in this set)
9
CNVSS
I
Flash writer IF (CNVSS) signal input (L: normally operation, H: fl ash write)
10
XIN
I
Low speed operation clock signal input (32.768 kHz)
11
XOUT
O
Low speed operation clock signal output (32.768 kHz)
12
RESET
I
System reset signal input
13
OSCOUT
O
High speed operation clock signal output (7.92 MHz)
14
VSS
—
Ground
15
OSCIN
I
High speed operation clock signal input (7.92 MHz)
16
VCC1
—
Power supply pin (+3.3 V)
17
NMI
I
Non-maskable interrupt signal input (Fixed at H in this set)
18
RC_IN1
I
Rotary commander shift key signal input
19
BUIN
I
Backup power supply detect signal input
20
SYSRST
O
System reset signal output
21
BUS_ON
O
VBUS power control signal output (Not used in this set)
22
MC_RX
I
MC-BUS communication MECHA (CMX-101Z) TX signal input
23
NCO
O
Not used. (Open)
24
MC_TX
O
MC-BUS communication MECHA (CMX-101Z) RX signal output
25
NCO
O
Not used. (Open)
26
SYNC_OUT
O
DD converter frequency control signal output
27
NCO
O
Not used. (Open)
28
BEEP
O
Beep signal output for the power amplifi er IC
29
I2C_SCK
O
IIC communication serial clock signal output
30
I2C_SIO
I/O
IIC communication serial data input/output
31
FW_TXD
O
Flash writer IF (serial data) output
32
FW_RXD
I
Flash writer IF (serial data) input
33
FW_CLK
I
Flash writer IF (serial clock) signal input
34
FW_BUSY
O
Flash writer IF (busy) signal output
35, 36
NCO
O
Not used. (Open)
37
CD_ON
I
CD mechanism servo power supply control request signal input
38
CDM_ON
I
CD mechanism deck power supply control request signal input
39
WAKE_UP
O
CD mechanism deck micon wake up signal output
40
Z_MUTE
I
Z mute signal input
41
EPM
O
EPM signal output (Fixed at L in this set)
42
MODELNAME_SEL0
I
Model name select signal input 0 (Fixed at L in this set)
43
MODELNAME_SEL1
I
Model name select signal input 1 (Fixed at L in this set)
44
MODELNAME_SEL2
I
Model name select signal input 2 (Fixed at L in this set)
45
MODELNAME_SEL3
I
Model name select signal input 3 (Fixed at L in this set)
46
CE
O
CE signal output (Fixed at H in this set)
47
NCO
O
Not used. (Open)
48
SA_DATAIN
I
Paradisso spectrum analyzer serial data input
49
SA_CLKOUT
O
Paradisso spectrum analyzer serial clock signal output
50
USBON
O
USB over current detect IC control signal output
51
VBUS_ON
I
VBUS power supply control signal input (L: VBUS OFF, H: VBUS ON)
52
USB_OVR
I
USB over current detect signal input
53
EXTATT_XEN
O
L is sent when electronic volume IC has the status of CD/USB (H is sent when it has the
status of other source) (Not used in this set)
status of other source) (Not used in this set)
54, 55
NCO
O
Not used. (Open)
56
TELATT
I
Telephone attenuator detect signal input (AEP, UK, Russian model)
57
ACC_IN
I
Accessory power supply detect signal input
58
ATT
O
Audio mute control signal output
CDX-GT50UMS/GT450U/GT457UE/GT500U/GT500US/GT505U
27
Pin No.
Pin Name
I/O
Description
59
DIAG
I
Condition signal input from power amp IC
60
AMPSTB
O
Standby signal output for power regulator IC
61
CYRIL_SEL
I
Cyril correspondance discrimination signal input (L: No correspondance) (Fixed at L in this
set)
set)
62
VCC2
—
Power supply pin (+3.3 V)
63
NCO
O
Not used. (Open)
64
VSS
—
Ground
65
ILLUMI SEL
I
Key illumination voltage setting signal input
66
COLSW SEL
I
Key illumination color change function signal input
67
NCO
O
Not used. (Open)
68
B-OUT SEL
I
Black out function setting signal input (L: without black out function)
69
AREASEL3
I
Destination setting pin 3 (Fixed at L in this set)
70
AREASEL2
I
Destination setting pin 2
71
AREASEL1
I
Destination setting pin 1
72
AREASEL0
I
Destination setting pin 0
73
R/S SW SEL
I
REAR/SUB select setting signal input (L: No switched) (Fixed at H in this set)
74, 75
NCO
O
Not used. (Open)
76
INITCOL_SEL
I
Key illumination initial color setting signal input
77, 78
NCO
O
Not used. (Open)
79, 80
DEBUG_1, DEBUG_2
O
Not used. (Open)
81
RE-IN1
I
Rotary encoder signal input 1
82
RE-IN0
I
Rotary encoder signal input 0
83 to 90
NCO
O
Not used. (Open)
91
KEYACK0
I
Key acknowledge detect signal input (Rotary commander)
92
KEYACK1
I
Key acknowledge detect signal input (Front panel)
93
NCO
O
Not used. (Open)
94
KEYIN1
I
Key signal input 1
95
KEYIN0
I
Key signal input 0
96
AVSS
—
Ground for A/D converter
97
RC_IN0
I
Rotary commander key signal input
98
AVRH
—
A/D converter external reference power supply pin (+3.3 V)
99
AVDD
—
A/D converter power supply pin (+3.3 V)
100
LCD_CE
O
Chip enable signal output for LCD driver
28
CDX-GT50UMS/GT450U/GT457UE/GT500U/GT500US/GT505U
not supplied
not supplied
FU601
not supplied
not supplied
not supplied
not supplied
#1
#1
#1
#3
#4
#4
#5
#5
#3
#2
#1
MG-101N-188
A
B
B
1
2
3
4
6
A
5
front panel section
SECTION 5
EXPLODED VIEWS
1
X-2547-883-1 PANEL
ASSY,
SUB
2
3-042-244-11 SCREW
(T)
3
X-2547-583-1 LOCK
ASSY
(T)
4
3-376-464-11 SCREW (+PTT 2.6X6), GROUND POINT
5
A-1785-262-A MAIN BOARD, COMPLETE (E,MX,IND)
5
A-1785-263-A MAIN BOARD, COMPLETE (EA)
5
A-1785-265-A MAIN BOARD, COMPLETE (AEP,UK)
5
A-1785-266-A MAIN BOARD, COMPLETE (GT457UE)
5
A-1785-267-A MAIN BOARD, COMPLETE (AR)
5
A-1785-580-A MAIN BOARD, COMPLETE (GT450U:RU)
6
1-776-527-11 CORD (WITH CONNECTOR) (ISO) (POWER) (AR)
6
1-831-838-11 CORD (WITH CONNECTOR) (ISO) (POWER)
(AEP,UK,RU)
6
1-833-762-11 CONNECTION CORD FOR AUTOMOBILE
(POWER) (for Maruti Suzuki:Gasoline car)
(GT50UMS)
6
1-833-974-21 CONNECTION CORD FOR AUTOMOBILE
(POWER)
(E,EA,MX/GT505U)
6
1-834-307-11 CONNECTION CORD FOR AUTOMOBILE
(POWER) (for Maruti Suzuki:Diesel car)
(GT50UMS)
FU601
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) 10A
#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
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
Note:
• -XX and -X mean standardized parts, so
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Items marked “*” are not stocked since
they are seldom required for routine ser-
vice. Some delay should be anticipated
when ordering these items.
vice. Some delay should be anticipated
when ordering these items.
• The mechanical parts with no reference
number in the exploded views are not sup-
plied.
plied.
• Color Indication of Appearance Parts Ex-
ample:
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet’s Color
• Accessories are given in the last of the
electrical parts list.
5-1. MAIN SECTION
The components identifi ed by mark 0
or dotted line with mark 0 are critical for
safety.
Replace only with part number specifi ed.
or dotted line with mark 0 are critical for
safety.
Replace only with part number specifi ed.
• Abbreviation
RU
RU
: Russian model
AR :
Argentina
model
EA
: Saudi Arabia model
MX
: Mexican model
IND
: Indian model
Click on the first or last page to see other CDX-GT450U / CDX-GT457UE / CDX-GT500U / CDX-GT500US / CDX-GT505U / CDX-GT50UMS service manuals if exist.