Sony WX-GT77UI / WX-GT78UI / WX-GT78UIM Service Manual ▷ View online
WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
25
25
1
A
B
C
D
E
F
G
2
3
4
5
6
7
8
9
10
11
12
13
14
B
SUB BOARD CN3
1-879-272- (11)
11
KEY BOARD (SIDE B)
FB1
FB2
FB3
JAC1
AUX
S1
PUSH DIAL
SELECT
(VOLUME)
Q40
Q41
Q42
Q43
C2
C6
C7
C9
D7
D8
R100
R101
R102
IC2
40
21
61
60
41
1
1
3
2
1
1
2
3
5
4
17
20
80
R10
R1
1
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R26
R29
R30
R31
R32
R33
BCE
BCE
BCE
B E
C
R1
R37
R3
R38
R39
R5
R6
R7
R8
R9
R40
R46
R48
R49
R50
R51
R52
R53
R54
R57
R58
R56
R60
R61
R62
R62
R64
R65
R66
R69
R68
R70
R72
R73
R74
R76
R77
R78
R78
R80
R81
R82
R84
R85
R86
R88
R89
CN1
R90
R95
R96
R98
R99
C10 C11
C12
C15
IC1
IC1
(Page 22)
4-10. PRINTED WIRING BOARD – KEY Section (2/2) –
•
: Uses unleaded solder.
Ver. 1.1
WX-GT77UI/GT78UI/GT78UIM
WX-GT77UI/GT78UI/GT78UIM
26
26
16
G
H
2
13
7
5
17
8
J
11
E
B
I
K
14
1
F
3
4
6
A
10
12
15
9
D
C
B
CN3
BOARD
SUB
2.5
2.5
2.5
5
5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
5.6
5.5
0
3
3.1
0.3
5.7
1.7
3.4
5.6
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
5.5
0.1
0.8
9
0
0.1
0.8
0.1
0.8
*
4
*
2
(GT78UI/GT78UIM)
3
1
*
*
(GT77UI)
2
*
1
*
4
*
(GT77UI)
(GT78UI/GT78UIM)
(GT78UI/GT78UIM)
(GT77UI)
(GT77UI)
(GT78UI/GT78UIM)
3
*
*
3
*
4
*
2
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
*
4
4
4
*
4
*
4
*
4
*
1
*
*
*
2
2
2
*
*
2
2
*
*
2
*
*
22
2
*
*
2
**
2
2
*
2
2
*
RESET
ILL+B
LCD-CLK
LCD-DATA
LCD-CE
SIRCS
KEY-IN1
KEY-IN0
KEY-IN0
RE-1
RE-0
RE-0
BLUE
AMBER
KEY-GND
D-GND
AUX-R
AUX-GND
AUX-L
LC75876WH-US-E
IC2
1
P3/S3
2
P4/S4
3
P5/S5
4
P6/S6
5
P7/S7
6
P8/S8
7
S9
S9
8
S10
9
S1
1
10
S12
11
S13
12
S14
13
S15
14
S16
15
S17
16
S18
17
S19
18
S20
19
S21
20
S22
21
S23
22
S24
23
S25
24
S26
25
S27
26
S28
27
S29
28
S30
29
S31
30
S32
31
S33
32
S34
33
S35
34
S36
35
S37
36
S38
37
S39
38
S40
39
S41
40
S42
41
S43
42
S44
43
S45
44
S46
45
S47
46
S48
47
S49
48
S50
49
S51
50
S52
51
S53
52
S54
53
S55
54
S56
55
S57
56
S58
57
S59
58
S60
59
S61
60
S62
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
S3
S4
S5
S6
S7
S8
S9
S10
S1
1
S12
S15
S20
S2
S21
S18
S19
S16
S17
5.6K
R22
3.9K
R20
3.3K
R18
2.2K
R16
1.8K
R14
1.5K
R11
1.2K
R9
1K
R7
1K
R5
820
R3
1.5K
R12
2.2K
R17
1.8K
R15
1K
R6
3.3K
R19
5.6K
R23
1.2K
R10
3.9K
R21
1K
R8
0.001
C2
470
R37
470
R38
470
R39
IC1
TSOP4840SB1
1
OUT
2
GND
3
Vcc
300
R26
220
R29
100
R30
100
R1
1M
R32
D8
0.47
C7
0.1
C11
0.1
C12
SO-194S-WM-SD-T
D44
SO-194S-WM-SD-T
D45
SO-194S-WM-SD-T
D47
SO-194S-WM-SD-T
D46
NESW505CT
-AST
D50
NESW505CT
-AST
D48
2.2
C9
D_GND
KEY_GND
NESW505CT
-AST
D49
1.5K
R53
1.5K
R50
1.5K
R49
1.5K
R54
1.5K
R52
1.5K
R51
820
R48
820
R46
1.2K
R60
1.2K
R64
1.2K
R68
1.2K
R72
1.2K
R80
1.2K
R84
1.2K
R76
1.2K
R88
1.2K
R56
0.022
C10
0.1
C6
2.2K
R97
10K
R98
10K
R100
JAC1
Q42
KTC3875
820
R40
Q40
KTC3875
ESD-GND
D87
SMLE12BC7TT86NT
D71
SMLE12BC7TT86NT
D80
SMLE12BC7TT86NT
D84
SMLE12BC7TT86NT
D83
SMLE12BC7TT86NT
D75
SMLE12BC7TT86NT
D79
SMLE12BC7TT86NT
D72
SMLE12BC7TT86NT
D76
SMLE12BC7TT86NT
D68
SMLE12BC7TT86NT
D67
SMLE12BC7TT86NT
D64
SMLE12BC7TT86NT
D63
SMLE12BC7TT86NT
D60
SMLE12BC7TT86NT
D55
SMLE12BC7TT86NT
D56
SMLE12BC7TT86NT
D59
SMLE12BC7TT86NT
D88
D86
D85
D77
D74
D73
D78
D82
D65
D66
D69
D70
D61
D58
D62
D57
D81
0
R95
DTC623TK
Q41
R58
R57
R74
R73
R70
R77
R90
R81
R89
R82
R85
R78
R62
R61
R86
R69
R66
R65
CN1
17P
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
0.022
C15
1K
R13
HZC6.2
D7
120
R33
1.2K
R31
D52
SMLE12BC7TT86NT
D54
Q43
KTC3875
10K
R102
S22
LCD1
1
1
1
2
3
4
5
5
5
6
7
8
9
10
10
11
12
13
14
15
15
16
17
18
19
20
20
21
22
23
24
25
25
26
27
28
29
30
30
31
32
33
33
34
34
35
35
36
37
38
39
40
40
41
42
43
44
45
45
46
47
48
49
50
50
51
52
53
54
55
55
56
57
58
59
60
60
61
62
63
64
65
65
66
66
S1
A
C
B
C
B
D
E
6
7
R99
R101
S7
S8
S9
S10
S1
1
S12
S13
S14
S15
S16
S17
COM1
S67
S66
S65
S64
S63
S62
S61
S60
S59
S58
S57
S55
S54
S53
S52
S51
S49
S48
S47
S46
S45
S44
S43
S42
S41
S6
S7
S8
S9
S10
S1
1
S12
S13
S14
S15
S16
S17
S21
S22
S23
S25
S26
S27
S28
S29
S30
S31
S32
S33
S34
S35
S36
S37
S38
S39
S40
S56
S24
COM4
COM2
COM3
S43
S44
S45
S46
S47
S48
S49
S51
S52
S53
S54
S55
S56
S57
S58
S59
S60
S61
S62
S63
S64
S65
S66
COM1
COM2
COM3
COM4
S67
S64
S65
S66
COM1
COM2
COM3
COM4
S67
S23
S24
S25
S26
S27
S28
S29
S30
S31
S32
S33
S34
S35
S36
S37
S38
S39
S40
S41
S42
S6
S22
S21
RESET
SOURCE
1
2
3/REP
4/SHUF
5/DM+
6/PAUSE
MODE
BTM
EQ3
ZAP
ALBM/
SEEK+
BLUE
GREEN/AMBER
DIMMER
BLINK
KEY BOARD
DISPLAY CONTROL
IC2
IC1
REMOTE CONTROL
SIGNAL RECEIVER
LIQUID CRYSTAL DISPLAY PANEL
SRC/
PRESET
+
SEEK-
PRESET
ALBM/
-
/SCRL
DSPL
SELECT
PUSH DIAL
(VOLUME)
AUX
EQ3
6/PAUSE
2
DSPL
1
ZAP
5/DM+
3/REP
/SCRL
MODE
BTM
4/SHUF
-
SEEK-
ALBM/
PRESET
PRESET
SEEK+
SRC/
ALBM/
+
SOURCE
LED DRIVE
Q40,43
LED DRIVE
Q41,42
D56,58
D60,62
(VOL ILLUMINATION)
D44-47
D48-50
(LCD BACK LIGHT)
D55,57
D59,61
D63,65
D67,69
D71,73
D75,77
D79,81
D83,85
D87,88
D52,54
D84,86
D80,82
D76,78
D72,74
D68,70
D64,66
SML-D12P8WT86SJ
D57,58,61,62,65,66,69,70,73,74,77,78,81,82,85,86
SML-D12D8WT86SQ
680
1.2k
1.2k
R61,62,65,66,69,70,73,74,77,78,81,82,85,86,89,90
680
750
750
R57,58
SML-D12P8WT86SJ
SML-310DTT86
SML-310DTT86
D54,88
FB1
FB2
FB3
10K
4.7K
DI
CL
CE
S63
S64
S65
S66
S64
S65
S66
COM1
COM2
COM3
COM4
COM2
COM3
COM4
S67
VDD
VDD1
VDD2
VDD2
VSS
S68/OSCI
INH
CE
CL
CL
DI
P1/S1
P2/S2
P2/S2
MA2J1
110GLS0
CE
DI
CL
4-11. SCHEMATIC DIAGRAM – KEY Section –
(Page 23)
Ver. 1.1
WX-GT77UI/GT78UI/GT78UIM
27
• IC Block Diagrams
IC301 TDA8588AJ/N2/R1 (MAIN Board (1/3))
MUTE
MUTE
ENABLE
LOGIC
STANDBY/
MUTE
BATTERY
DETECTION
CHIP DETECT/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
SWITCH
REGULATOR
SWITCH
REFERENCE
VOLTAGE
LOADDUMP
PROTECTION
TEMPERATURE
PROTECTION
BACK-UP
SWITCH
REGULATOR
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
TAB
OUT-FL–
OUT-FL+
OUT-RL–
OUT-RL+
IN-RL
S-GND
IN-RR
OUT-RR+
OUT-RR–
OUT-FR+
OUT-FR–
DIAG
ANT-REM
AMP-REM
SERVO-3.3V
MECH-6V
VP
BU+B
I2C_SIO
I2C_SCK
VP2
P-GND1
SVR
IN-FL
IN-FR
BEEP
P-GND3
VP1
STB
P-GND4
RST
CRES
AUDIO+B
(8.5V)
(8.5V)
GND
PANEL+B
CBU
FL
RL
RR
VP
FR
I
2
C BUS
WX-GT77UI/GT78UI/GT78UIM
28
IC601 BA8271F-E2 (MAIN Board (1/3))
IC001 TEF6607T/V4/S470,518 (MAIN Board (2/3))
1
2
3
4
5
5
6
7
8
9
10
14
13
12
11
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS_ON
RST
BATT
CLK
VREF
GND
VCC
RST
BUS_IN
CLK_IN
BU_CHECK
BUS_IN
CLK_IN
BU_CHECK
DATA_IN
DATA_OUT
DATA_I/O
AMRFIN 1
AMRFDEC 2
FMIN2 3
FMIN1 4
LOUT 8
ROUT 9
MPXOUT 13
RSSI 14
XTAL2 15
XTAL1 16
GNDAUD 10
GNDRF 5
VCC2 6
AMRFAGC 7
AMIFAGC2 11
MPXIN 12
AMSELOUT2
32
AMSELOUT1
31
AMIFAGC1
30
AMSELIN2
29
PLL
25
VCODEC
24
VREF
20
SDA
19
SCL
18
GNDD
17
GND
23
AMSELIN1
28
TEST
27
PLLREF
26
VCC1
22
VREGSUP
21
AM
TUNER
FM
TUNER
OUTPUT
PLL
TUNING
SYSTEM
I2C BUS
POWER
SUPPLY
STEREO DECODER
HIGH CUT
SOFT MUTE
NOISE BLANKER
SIGNAL
IMPROVEMENT
CONTROL
BANDWIDTH
CONTROL
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