Sony WX-GT77UI / WX-GT78UI / WX-GT78UIM Service Manual ▷ View online
WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
21
21
13
16
4
C
10
D
L
11
12
9
15
A
F
K
6
14
8
I
B
7
2
J
5
3
E
H
G
1
3
2
MAIN BOARD (1/3)
2
3
MAIN BOARD (2/3)
IC B/D
IC B/D
IC B/D
0
0
3
0
0.1
0
3.2
3.2
1.1
1.6
3.3
1.8
1.5
1.6
3.2
3.1
3.1
3.3
0
0
0
0
0
3.2
3.3
3.3
3.2
0.5
0
3.2
3.2
3.2
3.2
3.2
0.3
3
3.1
0
3
3
3.2
0
0
3
3.3
3.2
3.3
0
0
3
3
3.3
3.3
3
0
0
0
3.3
0
0
3.3
3.2
2.6
3.1
3.1
3.2
3
3.3
1.9
1.1
1.1
3
0
0
0
1.6
3.3
3.2
0
3
0
3.3
0
3.3
0
3.2
3
5.1
5.1
5.1
3.3
5.1
5.1
5.1
0.1
0
1.3
3.2
3.3
2.6
0.9
5
0.7
5
14.3
4.1
4.1
14.4
14.4
14.4
14.4
14.3
12.9
0.5
4.1
1.3
0.7
7
14.4
14.4
12.9
4.1
4.1
0
3
5.1
5.1
5.1
0.7
5.1
5.1
EXCEPT
US MODEL
US MODEL
D803
1
C803
1
C807
10V
100
C817
10V
100
C822
0.1
C801
0.1
C804
0.1
C810
0.1
C814
0.1
C815
0.1
C820
0
R217
0
R202
0
R523
0.01
C205
0.01
C202
0.01
C209
0.01
C509
16V
10
C201
0
R216
0
R215
0
R203
0
R809
0
R822
0
R204
0
R524
100k
R201
100k
R808
100k
R502
100k
R503
100k
R517
R505
100k
100k
R520
100k
R521
100k
R522
100k
R536
100k
R538
100k
R539
R547
100k
R545
100k
R543
100k
1k
R513
1k
R515
1k
R816
1k
R821
1k
R827
1k
R825
1k
R826
1SS355WTE-17
D804
1SS355WTE-17
D502
1SS355WTE-17
D505
10k
R819
10k
R818
10k
R815
10k
R514
10k
R516
4.7k
R519
RT1N141C-TP-1
Q802
RT1N141C-TP-1
Q805
220k
R563
16V
22
C204
L201
L202
470
R533
470
R534
470
R535
L203
1000p
C510
1000p
C511
1000p
C513
100
R205
100
R208
100
R512
100
R565
100
R525
100
R527
100
R207
100
R529
100
R541
100
R550
100
R558
10V
100
C208
BAT54ALT1G
D201
R
T1P141C-TP-1
Q804
2A
F801
56k
R801
56k
R802
56k
R814
8
7
6
5
4
3
2
1
TPS40200DRG4
IC801
RC
SS
COMP
FB
GND
DR
V
ISNS
VCC
1.5k
R805
470p
C805
470p
C806
470p
C819
68k
R806
15p
C809
1500p
C808
330k
R810
MAZ8120GMLS0
D801
MA24D5000BS0
D802
0.5%
R811
82k
0.5%
100k
R812
0.5%
22k
R813
10V
330
C813
MAZ8056GMLS0
6
5
4
3
2
1
D
D
G
S
D
D
RSQ035P03TR
Q803
8765
4
3
2
1
TPS2051BDRG4
IC802
GND
IN
IN
/EN
/OC
OUT
OUT
OUT
8765
4
3
2
1
TC7WH123FU(TE12R)
IC803
A
B
CLR
GND
Q
Cx
Rx/Cx
VCC
2.2k
R820
32.768kHz
X502
0.5%
10k
R528
0.5%
10k
R530
MAZ8068GMLS0
D503
100k
R551
100k
R553
100k
R552
100k
R559
100k
R554
100k
R567
100k
R570
4.7k
R518
1/2W
1%
0.012
R803
1/2W
1%
0.012
R804
47uH
L801
1
4
3
3
2
10uH
L803
68uH
L802
1
4
3
3
2
6
5
4
3
2
1
D
D
G
S
D
D
TPC6108(T5RSONYF
,M
Q801
6
5
4
3
2
1
D
D
G
S
D
D
TPC6108(T5RSONYF
,M
Q806
4.7k
R564
100
R540
100
R537
0
R562
0.01
C505
0.01
C512
1
C506
0.01
C514
CAM003
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
28P
CN201
NCO
NCO
SYS_RST
BU_3.3V
BU_GND
NCO(FLASH_W)
VBUS_ON
Z_MUTE
VBUS_CHECK
D_GND
TXD(MC-BUS)
RXD(MC-BUS)
MECHA_8.5V
USB_GND
DR_6V
DR_GND
CD_ON
CDM_ON
AU_ATT
AU_LCH
AU_GND
AU_RCH
A_GND
A_3.3V
EJECT_OK
OPEN_REQ
BU_CHECK
WAKE_UP
0.01
C203
JL017
JL014
JL020
JL019
JL019
JL004
JL015
JL012
JL025
JL028
JL003
JL023
JL001
JL013
JL021
JL008
JL018
JL006
JL009
JL026
JL005
JL024
JL007
JL022
JL002
JL010
JL016
JL011
JL027
JL054
JL055
JL056
JL057
JL055
JL056
JL057
JL050
JL051
JL052
JL053
JL051
JL052
JL053
JL058
JL059
RT1N141C-TP-1
Q502
1
2
3
4
5
6
7
8
8P
CN501
RESET
CLK
NCO
RX
TX
3.3V
F_WRITE
GND
CLK
NCO
RX
TX
3.3V
F_WRITE
GND
RT1P141C-TP-1
Q501
RT1P141C-TP-1
Q201
1SS355WTE-17
D202
RT1N141C-TP-1
Q503
4.7k
R557
4.7k
R556
1000p
C507
1000p
C508
0.5%
10k
R526
0.5%
10k
R532
100k
R566
L501
1k
R214
1k
R213
0
R212
560p
C206
560p
C207
0
R209
16V
120
C802
1k
R531
7.92MHz
X501
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
IC501
MB90F883AHPF-GE1-387A
CYRIL_SEL
B-OUT_SEL
COL_SW
ILLUMI_SEL
DOOR_SW
DOOR_IND
NOSE_SW
NCO
NCO
NCO
RE_IN0
RE_IN1
X_OUT
X_IN
VCC
VSS
C
UNISI
UNISO
UNISCK
NCO
I2C_SIO
I2C_SCK
NCO
ACC_IN
TEL_A
TT
AT
T
BUS_ON
SYS_RST
CD_ON
CDM_ON
AVCC
AVRH
RC_IN1
AVSS
NCO
VSM
SA_IN
KEY_IN1
KEY_IN0
RC_IN0
NCO
NCO
VSS
KEY_ACK0
KEY_ACK1
NCO
LCD_CE
LCD_SO
LCD_SCK
MD2
MD1
MD0
RESET
AREA_SEL2
AREA_SEL1
AREA_SEL0
W
AKE_UP
MC_RX
MC_TX
CLK
Z_MUTE
ILL_IN
TEST
VCC
VSS
NCO
AMP_STB
DIAG
EJECT_OK
SA_OUT
SA_CLK
F_AUX
TU_A
TT
CD_MUTE
RDS_ON
FLASH_EN0
FLASH_EN1
USB_ON
DD_ON
XFLASH
NCO
BU_CHECK
DAVN
NCO
NCO
NCO
V-BUS_ON
USB_OVR
VCC
VSS
OSC_IN
OSC_OUT
NCO
SIRCS
NCO
BEEP
ZAPPIN_BEEP
SYNC_OUT
NCO
NCO
BU_CHECK
DAVN
NCO
NCO
NCO
V-BUS_ON
USB_OVR
VCC
VSS
OSC_IN
OSC_OUT
NCO
SIRCS
NCO
BEEP
ZAPPIN_BEEP
SYNC_OUT
NCO
27p
C503
33p
C504
L204
1k
R568
1k
R509
0
R211
0.01
C824
C823
0.01
SER
VO+3.3V
A-GND
+B
8.5V
MECHA+6V
AT
T
DIAG
STB
RESET
A-GND
A-GND
3.3V
VBUS
DOOR-IND
CD-LCH
CD-RCH
HOT_GND
ACC_IN,BEEP_C,ILL_IN, RC_IN0,RC_IN1,TEL_A
TT
BUS_ON,SYS_RST
,BU_CHECK,
UNISCK,UNISI,UNISO
I2C_SCK_C,I2C_SIO_C
I2C_SCK_C,I2C_SIO_C
DA
VN,RDS_ON,VSM
R507
100k
C811
82k
0.5%
RESET
100k
R544
WAKE_UP
UNISO
UNISCK
RE_IN1
BUS_ON
CDM_ON
LCD_SO
LCD_SCK
W
AKE_UP
Z_MUTE
SA_DA
SA_CLK
DAVN
VBUS_ON
RE_IN0
LCD_CE
CD_ON
KEY_IN0
KEY_IN1
KEY_IN1
BU_CHECK
I2C_SCK_C
ILL_IN
EJECT_OK
EJECT_OK
CDM_ON
VBUS_ON
Z_MUTE
ACC_IN
MC_RX
MC_TX
BU_CHECK
RC_IN1
SA_OUT
RC_IN0
SIRCS
UNISI
I2C_SIO_C
BEEP_C
TEL_A
TT
MC_RX
MC_TX
ZAPPIN_BEEP
CD_ON
VSM
SYS_RST
DOOR_SW
SYSTEM CONTROL
IC501
USB POWER CONTROL SWITCH
IC802
DC/DC CONVERTER
IC801
IC803
MAIN BOARD
(3/3)
DOOR_SW
,KEY_IN0,KEY_IN1,
LCD_CE,LCD_SCK,LCD_SO, RE_IN0,RE_IN1,SIRCS
CD
UNIT
MECHANISM
(2/2)
(MG-101Z)
Q501-503
FLASH
PROGRAMMING
BUFFER
CD MUTE
USB POWER
CONTROL
USB POWER SWITCH
Q801
Q803
SWITCHING REGULATOR
DC/DC CONVERTER CONTROL
VOLTAGE
Q804,805
DETECT
+5V REG
Q806
SA_CLK,SA_DA,SA_OUT
,
ZAPPIN_BEEP
PROGRAMMING
FLASH
( )
4-6. SCHEMATIC DIAGRAM – MAIN Section (3/3) –
• See page 17 for Waveforms. • See page 30 for IC Block Diagrams. • See page 31 for IC Pin Function Description of IC501.
(Page 19)
(Page 20)
WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
22
22
1
A
B
C
D
E
F
G
H
2
3
4
5
6
7
8
9
10
11
12
13
14
S13
OFF
D255,256,
S250
D252,254
(CD SLOT-L)
D251
D252
D253
D254
D255
D256
;
D257,258,
S13
D251,253
(CD SLOT-R)
D257 D258
R251
R252
R253
R255
R256
R257
R259
R260
R261
R262
TP1
TP2
TP3
TP4
TP5 TP6
TP7
TP8
TP8
TP9
R4
TP10
TP11
TP12
TP13
TP14
TP15
TP16
TP17
TP18
TP19
CN2
CN3
1
17
1
18
B
KEY BOARD CN1
A
MAIN BOARD CN902
1-879-273- (11)
11
1-879-273-
(11)
11
SUB BOARD (SIDE A)
SUB BOARD (SIDE B)
S250
4-7. PRINTED WIRING BOARD – SUB Section –
•
: Uses unleaded solder.
(Page 25)
(Page 18)
Ref. No. Location
• Semiconductor Location
Ref. No. Location
D251
B-13
D252
B-3
D253
B-13
D254
B-3
D255
B-2
D256
B-2
D257
B-13
D258
B-13
Ver. 1.1
WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
23
23
7
5
10
C
D
B
2
11
6
E
8
A
9
4
3
1
F
BOARD
CN902
A
MAIN
B
KEY
CN1
BOARD
*
1
(GT78UI/GT78UIM)
(GT77UI)
(GT78UI/GT78UIM)
2
(GT77UI)
*
*
3
(GT77UI)
(GT78UI/GT78UIM)
1
*
*
2
2
*
*
1
3
*
*
1
*
1
*
3
*
3
*
3
KEY_GND
S250
ESD_GND
0
R262
R256
R257
R253
R252
1.2K
R251
1.8K
R255
D256
D254
D253
D252
SMLE12BC7TT86TN
D255
SMLE12BC7TT86TN
D251
SMLE12BC7TT86TN
CN3
17P
123456789
10
11
12
13
14
15
16
17
820
R4
S13
LCD-LED_GND
D258
R260
D257
SMLE12BC7TT86TN
R261
1.8K
R259
CN2
18P
123456789
10
11
12
13
14
15
16
17
18
TP1
TP2
TP10
TP3
TP5
TP6
TP7
TP8
TP9
TP11
TP13
TP14
TP15
TP4
TP12
TP16
TP17
TP18
TP19
AUX_L
AUX_GND
AUX_R
RESET
LCD-CLK
LCD-DATA
LCD-CE
LCD-CE
SIRCS
KEY-IN1
KEY-IN1
RE0
RE1
(CD SLOT L)
DOOR_IND(NC)
DOOR_SW
+B(LCD-LED)
SIRCS
KEY0
LCD_DATA
RE1
RE0
RE0
LCD_CLK
LCD_CE
KEY1
GND(KEY)
AUX_L
AUX_GND
AUX_R
GND(LCD_LED)
GND(LCD_LED)
GND(LCD_LED)
RST
SIRCS
RE-0
ILL+B
D-GND
AMBER
LCD-CE
RE-1
RESET
KEY-GND
AUX-L
BLUE
KEY-IN0
LCD-DATA
AUX-GND
KEY-IN1
LCD-CLK
AUX-R
OFF
SUB BOARD
D252,254
D251,253
(CD SLOT R)
D255,256
D257,258
OFF
680
SML-D12D8WT86SQ
D253,254,256,258
1.2k
R252,253
SML-D12P8WT86SJ
1.5k
1k
1k
R256,257,260,261
SIRCS
LCD-DATA
RE1
RE0
RE0
LCD-CLK
LCD-CE
KEY-IN1
AUX_L
AUX_GND
AUX_R
RESET
4-8. SCHEMATIC DIAGRAM – SUB Section –
(Page 20)
(Page 26)
Ver. 1.1
WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
24
24
1
A
B
C
D
E
F
G
2
3
4
5
6
7
8
9
10
11
12
13
14
S10
S11
S12
D75,77,S12
1
D76,78,S11
2
D71,73,S5
EQ3
D67,69,S4
BTM
D64,66,S2
MODE
D63,65,S15
SRC/SOURCE
D87,88,S16
D68,70,S3
DSPL/SCRL
D60,62,S18
.SEEK +
D52,54,S21
D72,74,S6
ZAP
RESET
D59,61,S20
D44-47
D56,58,
S19
VOL
ILLUMINATION
ALBM/
PRESET
–
D55,57,S17
ALBM/
PRESET
+
D79,81,S10
3/REP
D83,85,S8
5/DM+
D84,86,S7
6/PAUSE
D80,82,S9
4/SHUF
(LCD BACK LIGHT)
S15
LCD1
LIQUID CRYSTAL DISPLAY PANEL
S16
S17
S18
S19
S20
S21
S22
D44
D45
D46
D47
D48
D49
D50
D52
D54
D55
D56
D57
D58
D59
D60
D61
D62
D63
D64
D65
D66
D67
D68
D69
D70
D71
D72
D73
D74
D75
D76
D77
D78
D79
D80
D81
D82
D83
D84
1
33
66º
34
D85
D86
D87
D88
S2
S3
S4
S5
S6
S7
S8
S9
N
SEEK–
1-879-272- (11)
11
KEY BOARD (SIDE A)
(LCD BACK LIGHT)
(LCD BACK LIGHT)
4-9. PRINTED WIRING BOARD – KEY Section (1/2) –
•
: Uses unleaded solder.
Ref. No. Location
• Semiconductor Location
Ref. No. Location
Ref. No. Location
Ref. No. Location
Ref. No. Location
(D7)
E-4
(D8)
E-5
D44
D-13
D45
E-13
D46
D-12
D47
E-12
D48
C-3
D49
D-3
D50
F-3
D52
F-10
D54
F-11
D55
C-12
D56
D-13
D57
C-12
D58
D-13
D59
E-12
D60
D-11
D61
E-12
D62
D-11
D63
B-8
D64
C-9
D65
B-8
( ): SIDE B
D66
C-9
D67
E-9
D68
D-9
D69
E-9
D70
D-9
D71
F-9
D72
G-9
D73
F-9
D74
G-9
D75
B-3
D76
C-2
D88
C-11
(IC1)
G-12
(IC2)
D-6
(Q40)
C-3
(Q41)
E-3
(Q42)
D-3
(Q43)
E-3
D77
B-3
D78
C-2
D79
D-2
D80
E-2
D81
D-2
D82
E-2
D83
F-2
D84
G-3
D85
F-2
D86
G-3
D87
C-10
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