Samsung YP-P3 Service Manual page 19

Troubleshooting
~Rª M )
LIM1
0 0
1 0
0 1
1 1
V_DDCON
2
1
D
2
Q 3
4
1% OK
1% OK
SPK_5V
C 3 1 1
C 3 2 5
4-4
D303
Location Near CPU
RB551V-30
25V
C312
10uF
DLIM2
28
PG2
27
LX2
26
MAX8819
PV2
25
IC304
EN123
24
FB3
23
FB2
22
C314
4700nF
200mA
P1.8V
1% OK
1% OK
GND
2
1% ª¶
CON900
1% OK
C 3 0 9
L 3 0 3
R 3 1 7
C 3 1 0
1% OK
IC304
I C 3 0 4
 MAIN PCB Top, page 6-2
INN_BATT P3.2V
L306
10uH
RST1
8
BAT
9
SYS
10
DC
11
CEN
12
FB1
13
CISET
14
R324 10K
4.7uH
2
L305
400mA
P1.07V
2
0
R315
 Power Management, page 7-3
Q303
KRC857E
C O N 9 0 0
1
2
3
R 3 1 8
CON903
C O N 9 0 3
C 3 2 8
L 3 0 6
C 3 1 9
C 3 3 0 C 3 3 2
R 3 3 2
<Fig. 4-2>
V_DDCON
2
L304: 1.04V
2
L303: 1.8V
2
L305: 3.2V
GND
6.8K
R327
P3.2V
1% OK
R1 R2
Charge(mA)
300mA 3.3K X
440mA 3.3K 6.8K
1% OK!
1% OK!
CON902
2
C 9 0 5 C 9 0 0
C O N 9 0 2
6
R 3 2 9 R 3 2 8
R 3 3 0
R 3 1 3 R 3 1 9
5
L 3 0 5
4
L 3 0 4
GND
2
IC602
 MAIN PCB Bottom, page 6-4
P5V
1% OK!
1% OK!
1K
GND
R333
1K
R334
KRC408V
Q307
1% OK
GND
R310
0
GND
C 9 0 6
C 3 1 2
R 9 0 6
R 9 0 7
CORE_VOLT2
C 3 2 9
C 9 1 6
CORE_VOLT1
Q 3 0 7
R 3 3 6
Y P - P 3 - R E V 1
R 3 2 3
A H 4 1 - 0 1 1 7 9
Q 3 0 3
2 0 0 8 . 1 0 . 0 6
L 3 0 1
IC302
IC300
C 5 0 3
C 3 0 2
D 3 0 1
R 5 0 1
R 5 2 3
C 3 3 4 R 4 0 7
L 1 0 4 R 5 3 3
Samsung Electronics
C 5 0 6
R 1 1 0
EXT_
3.0V
200ms del
CPU
CHAR
JTAG
CHRG
300mA
P3.2V
C
A U O
C 1 2
D 3 0 0
R 3 0 4
R 1 1 2
R 5
R 5