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Flow Chart of Troubleshooting
Power On
MIC_BIAS_2V1
C311
C312
BLVDD_3V25
V_ISUP_2V5
R305
C315
BAT300
BACKLIGHT
BLVDD_3V25
VCC_RX_TX_2V7
VCC_SYN_2V7
C320
VCC_TX_BURST_2V7
VCC_RF_VCO_2V7
PON_SYNT
PON_TX
C326
VDD1_1V8
R301
IT_PMU
JIG_REC
RECO1
JACK_IN
TP300
32K
RSTON
ONKEY_N
CHARGER_OK
TP301
REF_ON
U302
E3
SCL
SCL
F2
SDA
SDA
C310
C313
H8
REFC
K6
REFGND
VBAT
J6
MICBIAS
C314
VBAT
K4
J5
VBACK
H6
ISUPA
J4
ISUPD
B7
BLVBAT
A7
BLVDD
C5
BBMSW
VBAT
A8
BBMGND
G9
RFVBAT
G10
RF1VDD
F10
RF1SNS
H10
RF2VDD
H9 RF2SNS
E8
RF1SWS
F9
RF1VDDS
E10
RF2SWS
J10
RF2VDDS
C329
C330
C328
C327
H7
VDD_VIB_3V05
VDD3_2V85
VIB
C337
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VBAT
C305
H5
D10
K3
H3
D9
A9
J2
K1
K2
C10
B2
A2
TM
SIM
CHARGE
PUMP
ON/OFF
12C
CONTROL
INTERFACE
control
status
data
SIM
INTERFACE
ON-CHIP
REFERENCE
reference
voltage
refgnd
&
internal
CLOCK
bias currents
MIC BIAS
clocks
GENERATOR
calibration
32KHz XTAL
PLL
OSCILLATOR
TEMP HIGH
htmp
SENSOR
REAL-TIME
CLOCK
BATTERY
VBAT
INTERNAL
VOLTAGE
SUPPLY
MONITOR
MODULE
internal
CHARGE
supply
CONTROL
BACKLIGHT
SUPPLY &
CONTROL
LINREG
SWITCH
E4
F5
F4 G4 J3 G5K5F6
G6
G7G8F7
E6 E7D7 C7D6 E5D5
D4C4
F1 F3
E9
G3
G2G1
H4
H2
H1 J1
F8 B4
VDD2_2V85
V_ISUP_2V5
VDD1_1V8
C338
C339
C340
POWER MANAGERMENT UNIT(PMU IC)
7-2
C301
C302
C309
B1
A1
C2
VCC
C3
CLK
C1
RST
D2
IO
C341
D1
CPRES
B8
SIMIO
C6
SIMCLK
K8
OSC32I
K9
OSC32O
R306
VBAT
D3
CHRVBAT
E2
CHRREG
E1
CHRIV
VCC_CP_4V
C8
HVSVBAT
HIGH VOLTAGE
B9
HVSGND
SUPPLY
C9
HVSSCP
(CHARGE
A10
HVSSCN
B10
PUMP+
HVSOC
D8
LINREG)
HVSVDD
L300
C325
2
NC
1
NC
VDD_KEY_2V95
A4
J8
J9
J7 K7
K10
A5 B5
A6 B6
B3 A3
VBAT
AVDD_TEMP_2V65
C333
C332
C335
C336
CN300
11
66
2
2
55
3
34
4
G
G
G
G
10
9
8
7
U301
1
6
IO
CLOCK
2
5
GND
NC
3
4
SIM VCC
SIMIO
SIMCLK
X300
CC7V-T1A
C316
C318
VBAT
C321
C322
C323
C324
AVDD_2V65
C334
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