Sony CDX-GT25MPW - Troubleshooting; General Troubleshooting; Demonstration Mode Issues; Display Issues

CDX-GT25MPW/GT30MP/GT250MP/GT257ME/GT300MP/GT303MP
CDX-GT25MPW/GT30MP/GT250MP/GT257ME/GT300MP/GT303MP
1515
SECTION 4
DIAGRAMS
4-1. BLOCK DIAGRAM – MAIN Section –
28
26
21
14
13
12
5
3
1
15
16
7
9
6
AU_LCH
AU_RCH
MEC_LOAD
MEC_EJECT
CDON_1500MV
MEC_INSW
MEC_LIMIT
DEC_INT
DEC_XMUTE
AU_8V
VDD_3.3V
BU_+3.3V
DR_+6V
R-CH
R-CH
R-CH
R-CH
R-CH
AUDIO+8.5V
BU+3.3V
SERVO+3.3V
R-CH
9
AUX_LCH
7
AUX_RCH
DEC_SO
24
20
22
DEC_SO
DEC_SCK
DEC_SI
DRV_ON
DRV_ON
37
DEC_SCK
23
DEC_SI
22
MEC_LOAD
38
2
MEC_DSW
MEC_EJECT
39
24
DEC_STBY
25
DEC_RST
CDON_1500MV
40
MEC_INSW
42
MEC_LIMIT
43
MEC_DSW
44
DEC_INT
45
DEC_XMUTE
BU+3.3V
49
CD_ZDET
51
CD_XCCE
52
DEC_SSTBY
53
DEC_RST
54
MEC_SELFSW
75
FW_TXD
31
CNVSS
9
FW_BUSY
34
FW_RXD
32
FW_CLK
33
VOUT
1
VIN
2
10
4
FMIN1
3
FMIN2
4
TU_LCH
8
AUX_GND
ELECTRONIC VOLUME
IC302
J1
(ANTENNA)
PHASE LOCKED LOOP
(PLL)
IC001
L6
FM MIX
L2
CN701
CD
MECHANISM
UNIT
(MG-101Y)
I2C BUS CONTROLLED
POWER AMP/MULTIPLE
VOLTAGE REGULATOR
IC301
SYSTEM CONTROL
IC401 (1/2)
RESET
IC403
CN802
3
TU_RCH
6
CD_LCH
5
CD_RCH
R-CH (FRONT)
R-CH (REAR)
BATT
R-CH
8
9
18
SCL
19
SDA
16
XTAL1
15
XTAL2
LOUT
ROUT
J901
AUX
X1
4MHz
5
3
OUT-FL+
OUT-FL–
9
7
OUT-RL+
OUT-RL–
27
R-CH
ANT-REM
35
VP
BATT
20
VP1
6
VP2
30
AUDIO+B
31
33
SERVO+3.3V
MECHA+6V
34
PANEL+B
R-CH (REAR/SUB)
35
33
OUT_FRCH
OUT_RRCH
R-CH
30
OUT_ SLCH
31
OUT_SRCH
4
I2C_SCK
AUDIO +8.5V
SERVO+3.3V
MECHA+6V
PANEL+B
2
I2C_SIO
16
BEEP
22
STB
25
DIAG
7
10
12
11
16
1
9
2
4
3
6
37
38
I2C_SCK
I2C_SIO
I2C_SCK
I2C_SIO
I2C_SCK
I2C_SIO
I2C_SCK
I2C_SIO
I2C_SCK
I2C_SIO
29
I2C_SCK
30
I2C_SIO
58
ATT
28
BEEP
60
AMPSTB
59
DIAG
19
BU_IN
12
IN-FL
FL+
FL–
L
R
RL+
RL–
FR+
FR–
RR+
RR–
ANT-REM
BATT
ACC
RU MODEL
34
OUT_FLCH
11
IN-RL
32
OUT_RLCH
12
RESET
57
ACC_IN
ACC DETECT
Q805
+3.3V REG
IC402
MUTE
Q103
29
AMP-REM
5
AMP-REM
1
AMRFIN
REAR/SUB
D306
FU601
13
TEL-ATT
56
TELATT
TEL-ATT
DETECT
Q806
37
BU+B
BU+5V
J301
-1
-2
AUDIO
OUT
BU+3.3V
BATT
54
BACK-UP
CHECK
D806,807,Q802,807,808
MECHA+6V
3.3V
6
3
FLASH_W
BUSY
7
CLK
2
RESET
RXD
5
1
4
TXD
CN401
FLASH
PROGRAMMING
BU+3.3V
BU+5V
17
23
CD_ZDET
CD_XCCE
4
MEC_SELFSW
MUTE
Q104
MUTE DRIVE
Q303,304
MUTE
Q102
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