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Power Supply Board Failure Check - Haier HL46XSL2 Service Manual

Mtk 5305 chassis
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Service Manual
Model No.: HL46XSL2

9-2. Power Supply Board Failure Check.

State:No picture
First,check cables which connect with PSU,then check as follows
Check input voltage
voltage: +5VSB----POWER ON(2.6V) -----+12V
+12V
CN10 Power
1
1
3
3
5VSTB
5
5
7
7
9
9
11
11
+3.3VDD
PWR_ON/OFF
R225
NC/10K
PWR-ON/OFF-GPIO46
First,check cables which connect with PSU,then check as follows
1) Check input voltage as NO picture
2) Check speaker output
speaker.
C133
NC
I2S_MCLK
R349
22
2
I2S_MCLK
I2S_SCLK
R346
22
2
I2S_SCLK
I2S_LRCLK
R334
22
2
I2S_LRCLK
I2S_SD0
R332
22
2
I2S_SD0
1,2,9,14
M_SCL
1,2,9,14
M_SDA
HP_MUTE_AMP
C116
100pF
C146
4.7nF
L76
+3.3AVDD
R306
RST_AMP
2
RST_AMP
50
+12V
2
2
4
4
6
6
8
R350
8
10
R341
10
12
12
R232
10K
R215
10K
C209
R213
0.1uF
NC/10K
L31
+12V
600(4.5X3.2)
CA84 470uF/35V
C140
1uF
C118
1uF
C131
0.1uF
C100
0.1uF
U54
C134
C135
C136
NC
NC
NC
27
XTI
28
BICKI
29
LRCKI
30
STA559BW
SDI
R335
22
34
SCL
R338
22
33
SDA
R363
NC/0R
23
PDN
R253
2.2K
25
PLL_FILTER
C117
680pF
26
PLL_GND
FB/2A
C255
100nF
5
VCC_REG
4
VSS
C161
100nF
15
VDD
14
GND_REG
10K
32
INT_LINE
R329
100
31
RST
C254
2.2uF
PB-ADJUST
100
PW_ON/OFF-INV
100
PB-ON/OFF
5VSTB
R212
2.2K
R214
PW_ON/OFF-INV
100
V203
3904
+3.3AVDD
+3.3AVDD
R107
3.3R
L74
FB/2A
C106
10uF
C107
10uF
C78
0.1uF
C160
0.1uF
C79
0.1uF
L33
13
OUT1A
C240
330pF/25V
R364
22
L34
10
OUT1B
L35
9
OUT2A
C281
330pF/25V
R360
22
L36
6
OUT2B
OUT3A
18
OUT3A/DDX3A
OUT3B
17
OUT3B/DDX3B
TW
20
TWARN/OUT4A
EAPD
19
EAPD/OUT4B
State:No sound
CN27
Speaker
AMP-Lout+
1
AMP-Lout-
2
AMP-Rout-
3
AMP-Rout+
4
22uH
AMP-Rout+
R494
12
C244
R362
12
100nF/25V
C291
100nF/25V
C262
100nF/25V
C258
R558
12
22uH
100nF/25V
R534
12
AMP-Rout-
22uH
AMP-Lout+
R493
12
C282
R359
12
100nF/25V
C286
100nF/25V
C284
100nF/25V
C283
R492
12
22uH
100nF/25V
R554
12
AMP-Lout-
C121
470nF
C123
470nF

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