9-2. Power Supply Bo
a
rd F
a
ilure Check.
Service M
a
nu
a
l
Model No.:
St
a
te:No picture
First,check c
a
bles
w
hich connect
w
ith PSU,then check
a
s
f
ollo
w
s
Check input volt
ag
e
volt
ag
e: +5VSB----POWER ON(2.6V) -----+12V
St
a
te:No sound
First,check c
a
bles
w
hich connect
w
ith PSU,then check
a
s
f
ollo
w
s
1) Check input volt
ag
e
a
s NO picture
2) Check spe
a
ker output
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spe
a
ker.
PWR-ON/OFF-GPIO46
V203
3904
1
2
3
4
5
6
7
CNA1
TJC3-7A
R214
100R
C209
0.1uF
R225
10K
PW_ON/OFF-INV
R213
33K
R212
2.2K
R215
NC
5VMst
+3.3VDD
+12V
5VMst
PW_ON/OFF-INV
PWR_ON/OFF
PW-ON/OFF-INV
AMP-Lout+
AMP-Lout+
AMP-Lout+
AMP-Lout+
R251 82R
AMP_LIN
C93
470n
AMP_RIN
R129
22K
C96
470n
C107
330p
R140
22K
CA85
1000u/25V
AMP-Rout+
R120
47K
MUTE_TDA8932
C121
0.1u
C91
470n
C92
470n
CA18
47uF/16V
R102
22K
L1
600(4.5X3.2)
C81
0.1u
CA81
470u/35V
CA84
470u/35V
R107
10R
L31
600(4.5X3.2)
C95
0.1u
C100
0.1u
VCC-AU
C161
0.1u
R253 82R
C106
330p
R293
10R
C151
470P
1
2
3
5
4
L36
47uh
C159
47n
C160
330n
AMP-Rout-
CA83
1000u/25V
C146
0.1u
AMP-Lout-
C117
15n
R220
10R
R92
22K
C123
470P
C108
0.1u
R123
12K
C116
0.1u
VSSD/HW
1
BOOT2
21
IN2P
15
VSSD/HW
17
VSSD/HW
16
IN1P
2
POWERUP
6
VDDA
8
CGND
7
DIAG
4
IN2N
14
VSSA
9
IN1N
3
ENGAGE
5
VDDP2
20
HVPREF
11
OSCREF
10
HVP2
19
INREF
12
DREF
18
NC
13
OUT2
22
VSSP2
23
STAB2
24
STAB1
25
VSSP1
26
OUT1
27
BOOT1
28
VDDP1
29
HVP1
30
OSCIO
31
VSSD/HW
32
DP
33
A1
TDA8932BTW/33BTW
C118
15n
R127
22K
C129
47n
C140
330n
1
2
3
5
4
L34
47uh
C109
0.1u
R180
39K
C112
0.1u
R128
22K
AMP-Lout+
AMP-Rout+
1
2
3
4
CNC2
CON4-2.5MM
AMP-Rout-
AMP-Lout-
AMP-Lout+
57
L32/42F6
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