Samsung SGH-P408 Service Manual page 20

SG H- P408 F low Chart of Troubleshooting
U400
R401
12
10 1
AOUTAP NO2 V+
9 NO1 2
SPK1 P COM 2
8 3
IN2 COM 1
7 4
NC2 IN1
YMU_SPK1P
6 5
GND NC1
C409
R407
1UF
10K
MICI N
R409
MICOUT
56K
C410
VCCA
NC
R411
680
C416
C415
33UF
NC
C417
R413
AUXI N
10K
1UF
R415
56K
AUXOUT
C418
NC
VCCA
R418
18K
R420
10K
VCC D
R400
100K
R402
12
AOUTAN
SPK1N
AUDIO_AMP_EN
YMU_SPK1 N
C400
100N F
CP_OEN
MAIN_MI C
C42 0
C411
8PF
33PF
R410
2.2K
R412
2.2K
VCCD
R41 9
1K
Q400
EAR_SWITC H
3
2
1
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25 24 23 22 21 20 19
26
D(1) D1
27
D(0) D0
28
CP_WEN /WR
29
U401
/CS
YMU_EN
30
A(0) A0
31
/RD
32
IOVDD
C405
NC
1 2 3 4 5 6 7
C40 7
220PF
CLK13M_YMU
YMU_LED
YMU_IRQ
RST
C413
1NF
AOUTBN
JACK_IN
AOUTB P
C4018 C4019
1NF 1NF
AUDI O
3- 8
18 17
VBA T
16
15
SPVD D
14 R403
EQ 3
R404
120K
13 82K
EQ 2
C401
R40 5
33K
12 120PF
C403
EQ 1
22NF
11
C421
HPOUT-R
R421
4.7N F
56K
10
HPOUT-L/MON O
8 9
C408
100NF
VCCD
C412
4.7U F
6.3V
C414
100NF
CN40 1
EAR_SPK_ N
6
EAR_MIC_ N
5
JACK_IN
4
3
EAR_SPK_P
2
EAR_MIC_P
1
R414 0
R416
C402 0
NC
150PF
C419 150PF
R417 NC
C402
100NF
C404
4.7U F
6.3V