Samsung SGH-C250 Service Manual page 28

Flow Chart of Troubleshooting
D(1)
D(0)
CP_WEN
YMU_EN
A(0)
CP_OEN
CLK13M_YMU
YMU_IRQ
MEM_RST
AUDIO_PA_SPK_P
SPK_P
AOUTAP
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25 24 23 22 21
33
G
26
D1
27
D0
28
/WR
29 SDIN
U106
30
SYNC
31
SCLK
32
SDOUT
34
G
2 3 4 5
1
VBAT
R141
C137
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19
20 18 17
36
G
16
15
SPVDD
14
EQ3
13
EQ2
12
EQ1
11 C180 R176
HPOUT-R
HPOUT-L/MONO 10
35
G
6 7 8 9
C138
VCCD_2.9V
R146
C142
C141
U104
1 V+ 10
NO2
2 NO1 9
COM2
3 IN2 8
COM1
4 IN1 7
NC2
5 NC1 GND 6
GND
11
3-14
VBAT
R174 150K
R175
C179
C181
AUDIO_PA_SPK_N
SPK_N
AUDIO_SEL
R140
AOUTAN
R144