Samsung YP-Q1 Service Manual page 23

EXT_PWR
Troubleshooting
GND
V_DDCON
GND
IC300
MAX8819
COMP4
1
FB4
2
OVP4
3
PG4
4
LX4
5
GND
6
EN4
7
INT_BATT
GND
CON300
Q303
KRC408V
GND
4-10
1 CK
2 D
3 Q
4 GND
GND
GND
1%
GND
L303
P3.0V
GND GND GND
GND
INT_BATT
R315
10Kohm
1
S/W300
4V
C
1 2
3 4
IC301
IC600
VCC
8
PR
7
CLR
6
Q
5
PWR_OFF
GND
CHG_DLIM2
1
LED_C-
LED_A+
V_DDCON
GND
10uH
LED_CTL
R321
1K
 POWER Page, 7-3
CPU_RST
PWR_IN_DDCON
IC300
R313
47K
PWR_IN_CPU
 MAIN PCB Bottom Page, 6-4
<Fig. 4-4>
GND
Q300
KRC857E
6 1
2
5
INT_BATT
4 3
1
GND
Q302
EMD2
P3.0V
1
GND
2
3
1%
1%
GND
IC602
Samsung Electronics
PWR_IN_DDCON
KDS121V
D302
RTC_INT
DCDC_EN
6
INT_BATT
5
4
BATT_LEV