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7. CIRCUIT DIAGRAM
33u
+5V_PWR
ICHARGE
C423
R405
CHG_CNT_N
10K
1u
ICHARGEOUT
1005
VBATT
BATT_FET_N
FLSH_DRV_N
VREG_5V
RESET_IN_N
C425
4.7u
smd_2520h1_6_r
USB_OE_N
+VPWR
4.7uH
L401
USB_CNT_N
USB_VBUS
USB_DAT
D402
RB521S-30
R408
USB_D+
C427
47K
4.7u
USB_SE0
USB_D-
VBAT_TEMP
KYPD_BACKLIGHT
+VPWR
PM_ON_SW_N
MOTOR_PWR-
USIM_P_DATA
VREG_PA
C434
2.2u
VREG_W_PA
PA_FET_N
Q403
Q404
SI8402DB
SI8407DB-T2-E1
VREG_PA
R412
100K
R413
1K
C442
0.1u
+VPWR
C404
C420
C421
0.1u
0.1u
1
63
ADC_BYP
REF_BYP
2
62
VCHG
REF_GND
3
61
R404
ISNS_P
REF_ISET
121K
4
60
CHG_CTL_N
VCOIN
5
59
ISNS_M
MSM_INT_N
6
58
VBAT
TCXO_IN
7
57
BAT_FET_N
PS_HOLD
8
56
FLSH_DRV_N
VREG_MSMA
9
U401
55
PON_RESET_N
TCXO_EN
10
54
VREG_USB
VDD_ANA
11
53
R406
51
C426
USB_ID
PM6650-2J
TCXO_OUT
1u
12
52
VREG_5V
VDD_MSM
13
51
USB_OE_N
SBST
14
50
VSW_5V
VREG_MSMP
15
49
USB_CTL_N
SBCK
16
48
USB_VBUS
VBACKUP
17
47
USB_DAT
SBDT
18
46
USB_D_P
XTAL_OUT
19
45
USB_SE0
SLEEP_CLK
20
44
USB_D_M
XTAL_IN
21
43
GP1_DRV_N(MPP7)
RUIM_RST(MPP6)
LCD_DRV_N
R409
10K
L402
4.7uH
C432
C433
smd_2520h1_6_r
2.2u
2.2u
C435
1000p
smd_2520h1_6_r
smd_2520h1_6_r
L403
L404
4.7uH
4.7uH
C440
C439
C437
C436
1000p
1000p
4.7u
4.7u
1608
1608
+VPWR
C441
10u
USB_VBUS
PA_FET_N
LCD_LDO_EN
R400
470K
U400
BH28FB1WHFV
1
5
STBY
NC
2
6
GND
BGND
R401
3
4
+VPWR
VIN
VOUT
VREG_LCD_2.8V
0
C402
C403
NA
R402
1u
1u
VREG_MSMP_2.7V
V_BACK_UP
JTAG_PS_HOLD
C422
1u
R403
470K
1%
D400
PM_INT_N
RB521S-30
TCXO_PM
PS_HOLD
VREG_MSMA_2.6V
TCXO_EN
C424
+VPWR
4.7u
BUFF_TCXO
smd_1608h_9_r
+VPWR
PM_SBST
VREG_MSMP_2.7V
PM_SBCK
C428
4.7u
smd_1608h_9_r
PM_SBDT
3
4
X400
SLEEP_CLK
1
2
USIM_P_RST_N
MC-146_12.5pF
C429
C430
32.768KHz
27p
27p
+VPWR
USIM_RST_N
USIM_P_CLK
USIM_CLK
USIM_DATA
VREG_USIM_2.85V
VREG_MMC_3.0V
TCXO_BT_IN
U403
6
1
USB_D-
USB_D+
5
2
4
3
PLR0504F-P
07/MAR/2006
EDTY0008607
LG Electronics Inc.
- 146 -
USB_VBUS
6
5
4
B
C1
C2
3
1
2
USB_CNT_N
+5V_PWR
6
5
4
3 B
C1
C2
1
2
CHG_CNT_N
ICHARGE
ICHARGEOUT
+VPWR
VBATT
BATT_FET_N
VREG_BT_2.85V
C431
1000p
R411
100K
VCC
C438
5
2
4
TCXO_BT
1000p
3
U402
GND
TC7S04FU
Sheet/
U300
Sheets
J.W.PARK
4/7
PMIC
U300_REV_1.1
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Troubleshooting
