Samsung SGH-F300 service manual.pdf
Samsung SGH-F300 service manual.pdf
Samsung SGH-F300 service manual.pdf
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3. Flow Chart of Troubleshooting<br />
3-1.Baseband<br />
3-1-1. Power ON<br />
'Power ON' Does not work<br />
Check the current consumption<br />
Current consumption<br />
≥100mA ?<br />
NO<br />
Down load again<br />
YES<br />
Check the battery voltage<br />
Voltage ≥ 3.3V ?<br />
NO<br />
Charge the Battery<br />
YES<br />
Check the pins of U838<br />
C215 ≥ 1.8V ?<br />
YES<br />
NO<br />
Check U838 and C215<br />
C217 and C218 = 2.8V?<br />
NO<br />
YES<br />
C219=1.5V?<br />
NO<br />
Check U838 and C219<br />
YES<br />
Check the clock signal<br />
at pin #3 of TCX100<br />
Freq.=26MHz,Vrms ≥300mV<br />
NO<br />
Check the clock generation circuit<br />
TCX100<br />
YES<br />
Check the Initial operation<br />
END<br />
3-1<br />
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AFC<br />
VAPC<br />
RTX_IP<br />
RTX_IN<br />
RTX_QP<br />
RTX_QN<br />
AOUTAP<br />
AOUTAN<br />
AOUTBP<br />
AOUTBN<br />
MICINP<br />
MICINN<br />
MICOUTP<br />
MICOUTN<br />
AUXINP<br />
AUXINN<br />
AUXOUTP<br />
AUXOUTN<br />
CLK32K<br />
XOENAQ<br />
CLK13M_CSP<br />
DSP_INT<br />
JIG_ON<br />
PWR_ON<br />
PSW1_BUF<br />
C233<br />
C232<br />
D9<br />
E7<br />
B5<br />
B6<br />
D7<br />
D6<br />
C7<br />
C6<br />
P11<br />
N12<br />
R12<br />
P12<br />
N14<br />
14<br />
N15<br />
P15<br />
M15<br />
L14<br />
K13<br />
L13<br />
R13<br />
M13<br />
R14<br />
R4<br />
P4<br />
L6<br />
M6<br />
N4<br />
D1<br />
R6<br />
5<br />
3<br />
C14<br />
C15<br />
L7<br />
K9<br />
N10<br />
M9<br />
L10<br />
9<br />
AFC<br />
TXP<br />
RAREF2<br />
RAREF1<br />
RXTXIP<br />
RXTXIN<br />
RXTXQP<br />
RXTXQN<br />
AOUTAP<br />
AOUTAN<br />
AOUTBP<br />
AOUTBN<br />
MICINP<br />
MICOUTP<br />
MICOUTN<br />
AUXINP<br />
AUXINN<br />
AUXOUTP<br />
AUXOUTN<br />
VXVCM<br />
VREGP<br />
VREGN<br />
DAICK<br />
DAIRN<br />
DAIDI<br />
DAIDO<br />
RTC_CLK<br />
XOENAQ<br />
MC<br />
PWR_SW2<br />
PWR_SW1N<br />
PSW1_BUF<br />
RESET_O<br />
MODE<br />
PWR_KEEP<br />
INTRQ<br />
C231<br />
R212<br />
C223<br />
2<br />
1<br />
C6<br />
NC5<br />
NDS17<br />
GNDS16<br />
NDS15<br />
NDS13<br />
GNDS12<br />
NDS11<br />
NDS9<br />
NDS8<br />
NDS7<br />
NDS6<br />
NDS5<br />
NDS4<br />
NDS3<br />
NDS2<br />
NDS1<br />
UX_ADC3<br />
ND_OCTL<br />
V DD_OCTL C 4<br />
NDV<br />
V DDV L1 1<br />
V DDB A 6<br />
GNDD M10<br />
DDD<br />
VSS4<br />
SS3<br />
SS2<br />
SS1<br />
DD_IO2<br />
VDD_IO1<br />
DD3<br />
DD2<br />
DD1<br />
ND_HCUR<br />
1<br />
J10<br />
G NDS14 J 8<br />
H9<br />
G NDS10 H 7<br />
NDB<br />
P6<br />
N5<br />
G ND_PSC2 K1 5<br />
GND_PSC1 B15<br />
G NDQ E 8<br />
DD67<br />
V DD5 C1 0<br />
C203<br />
Flow Chart of Troubleshooting<br />
VRF_2.8V<br />
VCCA_2.8V<br />
HPEIO_1.8V<br />
VCCD_2.8V<br />
C202<br />
C200<br />
C201<br />
VBAT<br />
EAR_ADC<br />
DSP_DB(0:15)<br />
C209<br />
DSP_IO<br />
DSP_RWN<br />
FLASH_RESET<br />
DSP_AB(0:8)<br />
T_DSP_IO<br />
R205<br />
BAND_SEL<br />
MOD_SEL<br />
TX_EN<br />
XOENA<br />
SX_EN<br />
PAC_EN<br />
RX_EN<br />
DSP_DB(15)<br />
DSP_DB(14)<br />
DSP_DB(13)<br />
DSP_DB(12)<br />
DSP_DB(11)<br />
DSP_DB(10)<br />
DSP_DB(9)<br />
DSP_DB(8)<br />
DSP_DB(7)<br />
DSP_DB(6)<br />
DSP_DB(5)<br />
DSP_DB(4)<br />
DSP_DB(3)<br />
DSP_DB(2)<br />
DSP_DB(1)<br />
DSP_DB(0)<br />
DSP_AB(8)<br />
DSP_AB(7)<br />
DSP_AB(6)<br />
DSP_AB(5)<br />
DSP_AB(4)<br />
DSP_AB(3)<br />
DSP_AB(2)<br />
DSP_AB(1)<br />
DSP_AB(0)<br />
D2<br />
D3<br />
E3<br />
E2<br />
F3<br />
F2<br />
F1<br />
F4<br />
G4<br />
G3<br />
H5<br />
J6<br />
J5<br />
K3<br />
K2<br />
K1<br />
K5<br />
K7<br />
M1<br />
M2<br />
N2<br />
N1<br />
L5<br />
P1<br />
K6<br />
L3<br />
L2<br />
R3<br />
E6<br />
C5<br />
F5<br />
E5<br />
A4<br />
G6<br />
B3<br />
A3<br />
DB15<br />
DB14<br />
DB13<br />
DB12<br />
DB11<br />
DB10<br />
DB9<br />
DB8<br />
DB7<br />
DB6<br />
DB5<br />
DB4<br />
DB3<br />
DB2<br />
DB1<br />
DB0<br />
AB8<br />
AB7<br />
AB6<br />
AB5<br />
AB4<br />
AB3<br />
AB2<br />
N 2<br />
AB1<br />
AB0<br />
I|O<br />
RWN<br />
RESETN_CSP<br />
OCTL0<br />
OCTL1<br />
OCTL2<br />
OCTL3<br />
OCTL4<br />
OCTL5<br />
OCTL6<br />
OCTL7<br />
G K1 0<br />
G J 9<br />
G J 7<br />
G H 8<br />
G H 6<br />
G G1 0<br />
G G 9<br />
G G 8<br />
G G 7<br />
G F1 0<br />
G F 9<br />
G F 8<br />
G F 7<br />
A D1 3<br />
G B 4<br />
G P1 3<br />
G F 6<br />
U838<br />
V N1 1<br />
V R 2<br />
V K 4<br />
V G 5<br />
V J 4<br />
V N 6<br />
V M 3<br />
V J 3<br />
G F1 1<br />
V B1 3<br />
VDD34 C11<br />
VDD12 J13<br />
UP_CLK N9<br />
UP_RST R10<br />
UP_IO P10<br />
SIM_IO J11<br />
SIM_RST K11<br />
SIM_CLK K14<br />
VSIM K12<br />
VRTC H11<br />
LED2_DRV G12<br />
LED1_DRV G13<br />
RING_DRV F13<br />
VIB_DRV F15<br />
VLDO_7 C12<br />
VLDO_6 A14<br />
VL5S_B C9<br />
VL5S_A D10<br />
VLDO_5 B10<br />
VL4S_B B11<br />
VL4S_A A12<br />
VLDO_4 B12<br />
VLDO_3 A13<br />
VLDO_2 J12<br />
VLDO_1 G11<br />
VACC F14<br />
CSN_PSC K8<br />
SCLK_PSC L8<br />
SDO_PSC N7<br />
SDI_PSC M7<br />
VEXT E14<br />
VBAT E13<br />
CH_BDRV E11<br />
CH_ISEN F12<br />
CH_RES D14<br />
ADC_AUX2 D15<br />
SIMCLK<br />
SIMRST<br />
SIMDATA<br />
SIM_IO<br />
SIM_RST<br />
SIM_CLK<br />
VSIM<br />
TP_CSN_PSC<br />
DCS_TX_EN<br />
GSM_TX_EN<br />
TP_VACC<br />
VBAT<br />
UP_CS<br />
UP_SCLK<br />
UP_SDO<br />
UP_SDI<br />
VCCB_2.9V<br />
C214<br />
VLDO_1.8V VCCA_2.8V<br />
C221 C215 C216<br />
ICHRG<br />
VRTC_1.5V<br />
VRF_2.8V<br />
VCCD_2.8V<br />
R204<br />
VLDO_1.5V<br />
BAT200<br />
C217 C218 C219 C220<br />
VCCB_2.9V<br />
TH200<br />
SERLE<br />
SERDAT<br />
SERCLK<br />
B1<br />
A2<br />
C1<br />
C2<br />
SERLE1<br />
SERLE2<br />
SERDA<br />
SERCK<br />
M MICIN N<br />
P ADC_AUX 4<br />
P DINT R<br />
ADC_AUX1 E10<br />
VREF A10<br />
CREF E9<br />
RTC_ALMNH10<br />
L VIB_RNG_E N<br />
C230<br />
R211<br />
RTCALARM<br />
SUB_BATT<br />
R210<br />
C228<br />
VBAT<br />
R214<br />
INTRQ<br />
PWR_KEEP<br />
RST<br />
VRF_2.8V<br />
R111<br />
AFC<br />
R112<br />
C126<br />
C125<br />
R113<br />
CLK26M<br />
C129<br />
3-2<br />
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This Document can not be used without <strong>Samsung</strong>'s authorization
Flow Chart of Troubleshooting<br />
3-3<br />
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This Document can not be used without <strong>Samsung</strong>'s authorization
Flow Chart of Troubleshooting<br />
3-1-2. Initial<br />
Initial Failure<br />
The voltage at the C215=1.8V?<br />
The voltage at the C218=2.8V?<br />
NO<br />
Check the U838<br />
(If it has some problem,<br />
it has to be replaced.)<br />
YES<br />
The voltage at the VR301<br />
" Low --> High" ?<br />
NO<br />
Check the U838<br />
(If it has some problem,<br />
it has to be replaced.)<br />
YES<br />
There is 32.768KHz wave<br />
form at the C317, C318 ?<br />
NO<br />
Check the UCP300<br />
YES<br />
The voltage is 2.8V<br />
at the C216,C217,C218 ?<br />
NO<br />
Check the U838<br />
YES<br />
LCD Display OK ?<br />
NO<br />
Check the LCD part<br />
YES<br />
Sound operation OK ?<br />
NO<br />
Check the Audio part<br />
YES<br />
END<br />
3-4<br />
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This Document can not be used without <strong>Samsung</strong>'s authorization
SAMSUNG Proprietary-Contents may change without notice<br />
Flow Chart of Troubleshooting<br />
3-5<br />
This Document can not be used without <strong>Samsung</strong>'s authorization<br />
C307<br />
TDI<br />
C318<br />
TP_ROM1_CS<br />
HP_CORE_1.57V<br />
C310<br />
TDO<br />
TP_OEN<br />
R325<br />
R327<br />
C305<br />
X2RTC<br />
VSS2<br />
SS3<br />
V 8<br />
G<br />
G9<br />
VSS4<br />
SS5<br />
V 8<br />
H<br />
H9<br />
VSS6<br />
SS7<br />
V 0<br />
H1<br />
H11<br />
VSS8<br />
SS9<br />
V 2<br />
H1<br />
SSA_D<br />
V 1<br />
R1<br />
F18<br />
VSSA_U<br />
X1RTC<br />
H19<br />
F19<br />
SS1<br />
V 2<br />
A<br />
J12<br />
VSS10<br />
SS11<br />
V 8<br />
K<br />
L7<br />
VSS12<br />
SS13<br />
V 8<br />
L<br />
M8<br />
VSS14<br />
SS15<br />
V 9<br />
M<br />
M10<br />
VSS16<br />
SS17<br />
V 1<br />
M1<br />
M12<br />
VSS18<br />
A18<br />
W8<br />
W18<br />
VDD_IO_1P8_18<br />
B6<br />
VDD_IO_1P8_2<br />
DD_IO_1P8_3<br />
V 2<br />
B1<br />
B16<br />
VDD_IO_1P8_4<br />
DD_IO_1P8_5<br />
V 1<br />
C<br />
C14<br />
VDD_IO_1P8_6<br />
DD_IO_1P8_7<br />
V 9<br />
D<br />
D18<br />
VDD_IO_1P8_8<br />
F1<br />
VDD_IO_1P8_9<br />
G18<br />
VRTC<br />
VDD_CORE6<br />
DD_CORE7<br />
V 7<br />
V<br />
V13<br />
VDD_CORE8<br />
DD_IO_1P8_1<br />
V 4<br />
B<br />
L4<br />
VDD_IO_1P8_10<br />
DD_IO_1P8_11<br />
V 6<br />
L1<br />
P1<br />
VDD_IO_1P8_12<br />
DD_IO_1P8_13<br />
V 8<br />
T1<br />
U1<br />
VDD_IO_1P8_14<br />
U5<br />
VDD_IO_1P8_15<br />
U12<br />
VDD_IO_1P8_16<br />
VDD_IO_1P8_17<br />
R12<br />
TRSTN<br />
TX0<br />
M3<br />
TX1<br />
K7<br />
T11<br />
VDDA_D<br />
F17<br />
VDDA_U<br />
DD_CORE1<br />
V 8<br />
B<br />
B13<br />
VDD_CORE2<br />
DD_CORE3<br />
V 2<br />
G<br />
H18<br />
VDD_CORE4<br />
DD_CORE5<br />
V 2<br />
M<br />
N18<br />
R4<br />
SPRXD1_PIO17<br />
M17<br />
SPTXD0_I2SD<br />
U2<br />
SPTXD1_I2SD_PIO16<br />
N16<br />
TCK<br />
U14<br />
V14<br />
TDI<br />
TDO<br />
T12<br />
TEST1<br />
U15<br />
T14<br />
TEST2<br />
TEST3<br />
V16<br />
MS<br />
T 4<br />
W1<br />
H17<br />
2<br />
N 4<br />
RTS0_PIO0<br />
V6<br />
RWN<br />
RX0_IRQ28<br />
M1<br />
6<br />
L 8<br />
RX1_IRQ2<br />
SIMCLK<br />
P4<br />
2<br />
T O<br />
SIMI<br />
3<br />
R 0<br />
SPCLK<br />
M18<br />
SPCLK1_PIO18<br />
3<br />
T 0<br />
SPFS<br />
SPFS1_PIO15<br />
N15<br />
SPRXD0<br />
15<br />
J K<br />
PIO38_MCI_CL<br />
14<br />
L N<br />
PIO39_MCI_CMD_E<br />
PIO40_MCI_DAT_EN<br />
M14<br />
PIO41_IRDATX<br />
R16<br />
PIO42_IRDARX<br />
R17<br />
14<br />
N N<br />
PIO43_MCI_DAT0_E<br />
J16<br />
PIO47<br />
5<br />
G 6<br />
PWM1_PIO4<br />
ESTN<br />
R 5<br />
G1<br />
RIO_PIO01<br />
P3<br />
RTCALARMN<br />
U16<br />
PIO27<br />
U19<br />
17<br />
W 8<br />
PIO2<br />
E14<br />
PIO30_WAITN<br />
PIO31_IRQ6<br />
P12<br />
PIO32<br />
R13<br />
U18<br />
PIO33<br />
PIO34<br />
R14<br />
PIO35_A_A25_BOOTSEL<br />
F2<br />
16<br />
F N<br />
PIO36_USB_OE<br />
PIO37_USB_DATA<br />
E17<br />
C18<br />
17<br />
D O<br />
PIO12_USB_VP<br />
PIO13_USB_VMO<br />
E16<br />
5<br />
P T<br />
PIO14_SIMRS<br />
15<br />
P P<br />
PIO19_PWRKEE<br />
PIO20_SYSCLKREQ<br />
P19<br />
PIO21_MCI_DAT0<br />
K13<br />
PIO22_MCI_DAT1<br />
L12<br />
13<br />
L 2<br />
PIO23_MCI_DAT<br />
PIO24_MCI_DAT3<br />
L15<br />
19<br />
V 5<br />
PIO2<br />
PIO26<br />
3<br />
H 8<br />
KEYBRD<br />
KEYBRD9<br />
G6<br />
1<br />
NC1<br />
C2<br />
N 2<br />
16<br />
G T<br />
OSC32OU<br />
PIO00_IRQ5<br />
P16<br />
19<br />
B P<br />
PIO07_USB_SUS<br />
PIO08_MCI_CMD<br />
J13<br />
19<br />
C I<br />
PIO09_USB_VP<br />
PIO10<br />
V17<br />
PIO11_USB_VMI<br />
IRQ4<br />
7<br />
J 0<br />
KEYBRD<br />
KEYBRD1<br />
J6<br />
4<br />
G 0<br />
KEYBRD1<br />
KEYBRD11<br />
H2<br />
5<br />
J 2<br />
KEYBRD<br />
4<br />
J 3<br />
KEYBRD<br />
8<br />
J 4<br />
KEYBRD<br />
KEYBRD5_PSW1_BUF<br />
H6<br />
4<br />
H 6<br />
KEYBRD<br />
KEYBRD7<br />
H1<br />
T8<br />
T9<br />
D_D8<br />
D_D9<br />
R9<br />
FLASHRSTN<br />
H14<br />
T15<br />
INT0<br />
IO<br />
W6<br />
V12<br />
IOBIT0_PIO05<br />
IOBIT1_PIO06<br />
N11<br />
M16<br />
IRQ1<br />
M19<br />
IRQ2<br />
IRQ3<br />
P17<br />
P18<br />
D_D11<br />
P9<br />
N8<br />
D_D12<br />
D_D13<br />
N9<br />
N10<br />
D_D14<br />
D_D15<br />
P11<br />
R7<br />
D_D2<br />
D_D3<br />
T7<br />
R8<br />
D_D4<br />
D_D5<br />
V8<br />
U8<br />
D_D6<br />
D_D7<br />
W2<br />
W3<br />
D_A2<br />
D_A3<br />
V3<br />
U4<br />
D_A4<br />
D_A5<br />
T5<br />
V4<br />
D_A6<br />
D_A7<br />
N6<br />
R6<br />
D_A8<br />
U6<br />
D_D0<br />
T6<br />
D_D1<br />
P8<br />
D_D10<br />
E12<br />
A_OEN<br />
B14<br />
D14<br />
A_WEN<br />
W12<br />
CKI<br />
N12<br />
CKO_IACK<br />
T17<br />
CPTSTSTOP_CKO<br />
CTS0_PIO29<br />
M6<br />
5<br />
N 4<br />
DCD0_PIO4<br />
2<br />
P 2<br />
DSR0_PIO0<br />
DTR0_PIO03<br />
N4<br />
V1<br />
D_A0<br />
D_A1<br />
A_D13<br />
D12<br />
E13<br />
A_D14<br />
A_D15<br />
D13<br />
F9<br />
A_D2<br />
A_D3<br />
G10<br />
G11<br />
A_D4<br />
A_D5<br />
F11<br />
E11<br />
A_D6<br />
A_D7<br />
G12<br />
A_D8<br />
D11<br />
A_D9<br />
A_CS2N<br />
A_CS3N<br />
J14<br />
D15<br />
A_CS4N<br />
A_CS5N<br />
C16<br />
F15<br />
A_CS6N<br />
A_CS7N<br />
B17<br />
A8<br />
A_D0<br />
A_D1<br />
E9<br />
C12<br />
A_D10<br />
A_D11<br />
A12<br />
F12<br />
A_D12<br />
A6<br />
C6<br />
A_A4<br />
A_A5<br />
C5<br />
D7<br />
A_A6<br />
A_A7<br />
E7<br />
C4<br />
A_A8<br />
A_A9<br />
C2<br />
H16<br />
A_BE0N<br />
A_BE1N<br />
A17<br />
A14<br />
A_CS0N<br />
A_CS1N<br />
C15<br />
G14<br />
E8<br />
A_A16<br />
A_A17<br />
F8<br />
E6<br />
A_A18<br />
A_A19<br />
D2<br />
A_A2<br />
D8<br />
E4<br />
A_A20<br />
A_A21<br />
E3<br />
F5<br />
A_A22<br />
A_A23<br />
F4<br />
F3<br />
A_A24<br />
A_A3<br />
L5<br />
T13<br />
ATDO_PWM2<br />
K12<br />
ATMS_PIO45<br />
B7<br />
A_A0<br />
A_A1<br />
C8<br />
A3<br />
A_A10<br />
A_A11<br />
B3<br />
B1<br />
A_A12<br />
A_A13<br />
D6<br />
D5<br />
A_A14<br />
A_A15<br />
D3<br />
HP_CORE_1.57V<br />
UCP300<br />
M4<br />
ATCK_CTS1<br />
ATDI_RTS1<br />
C309<br />
C317<br />
R304<br />
OSC300<br />
HPEIO_1.8V<br />
C308<br />
TP_RAM1_CS<br />
R324<br />
TMS<br />
C302<br />
TCK<br />
R323<br />
C306<br />
GND<br />
VRTC_1.5V<br />
C311<br />
HPEIO_1.8V<br />
C304<br />
C303<br />
TP_MV_CS<br />
R326<br />
TP_WEN<br />
MIC_AMP_EN<br />
CARD_INS<br />
SUB_BATT_SW<br />
D_SDA_HPE<br />
RADIO_SEL<br />
MP3_ENABLE<br />
MP3_SDA<br />
MP3_SCL<br />
HOLD<br />
KEY_EL_ON<br />
MODE_SELECT<br />
LCD_CON<br />
D_SCL_HPE<br />
USB_ON<br />
BT_RTS<br />
BT_RXD<br />
BT_TXD<br />
BT_EN<br />
D_SDA<br />
PCM_SYNC<br />
PCM_IN<br />
PCM_OUT<br />
PCM_CLK<br />
ROM2_CS<br />
A(0)<br />
RAM1_CS<br />
CHG_DET<br />
R_RW<br />
MV_INT<br />
JACK_IN<br />
INTRQ<br />
CP_TMS<br />
TR_RST<br />
CLK13M_HPE<br />
DSP_INT<br />
DSP_IO<br />
DSP_RWN<br />
VIB_EN<br />
AMP_EN<br />
DAC_RESET<br />
MV_RST<br />
VBUS_GPIO<br />
CF<br />
FLIPPER_USB<br />
D_SCL<br />
BT_CTS<br />
SDS_RXD<br />
KEY_COL(0:4)<br />
KEY_COL(4)<br />
KEY_COL(3)<br />
KEY_COL(2)<br />
KEY_COL(1)<br />
KEY_COL(0)<br />
KEY_ROW(0:4)<br />
KEY_ROW(3)<br />
KEY_ROW(2)<br />
KEY_ROW(1)<br />
KEY_ROW(0)<br />
KEY_ROW(4)<br />
PSW1_BUF<br />
RTCALARM<br />
MVCORE_ON<br />
EAR_SWITCH<br />
CHG_OFF<br />
CLK32K<br />
XOENAQ<br />
PWR_KEEP<br />
USB_CON<br />
CP_TDO<br />
CP_TDI<br />
CP_TCK<br />
DSP_DB(2)<br />
DSP_DB(3)<br />
DSP_DB(4)<br />
DSP_DB(5)<br />
DSP_DB(6)<br />
DSP_DB(7)<br />
DSP_DB(8)<br />
DSP_DB(9)<br />
USB_DET<br />
USB_VMO<br />
USB_DATA<br />
USB_VPO<br />
USB_OEN<br />
UP_SCLK<br />
USB_SUSP<br />
UP_SDO<br />
UP_CS<br />
UP_SDI<br />
SDS_TXD<br />
DSP_AB(5)<br />
DSP_AB(4)<br />
DSP_AB(3)<br />
DSP_AB(2)<br />
DSP_AB(1)<br />
DSP_AB(0)<br />
DSP_AB(8)<br />
DSP_DB(0:15)<br />
DSP_DB(0)<br />
DSP_DB(1)<br />
DSP_DB(10)<br />
DSP_DB(11)<br />
DSP_DB(12)<br />
DSP_DB(13)<br />
DSP_DB(14)<br />
DSP_DB(15)<br />
D(14)<br />
D(13)<br />
D(12)<br />
D(11)<br />
D(10)<br />
D(9)<br />
D(8)<br />
D(7)<br />
D(6)<br />
D(5)<br />
D(4)<br />
D(3)<br />
D(2)<br />
D(1)<br />
D(0)<br />
CP_WEN<br />
CP_OEN<br />
FLASH_RESET<br />
MV_CS<br />
ROM1_CS<br />
UPPER_BYTE<br />
LOWER_BYTE<br />
SIMDATA<br />
SIMCLK<br />
SIMRST<br />
DSP_AB(0:8)<br />
DSP_AB(7)<br />
DSP_AB(6)<br />
A(1)<br />
A(2)<br />
A(11)<br />
A(12)<br />
A(13)<br />
A(14)<br />
A(15)<br />
A(16)<br />
A(17)<br />
A(18)<br />
A(19)<br />
A(20)<br />
A(3)<br />
A(21)<br />
A(4)<br />
A(5)<br />
A(6)<br />
A(7)<br />
A(8)<br />
A(9)<br />
A(10)<br />
A(22)<br />
A(23)<br />
A(24)<br />
A(0:25)<br />
D(0:15)<br />
D(15)
Flow Chart of Troubleshooting<br />
3-6<br />
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Flow Chart of Troubleshooting<br />
3-1-3. Charging<br />
Abnormal charging part<br />
The pin #19,20<br />
of IFC 502<br />
VEXT ≥ 5V?<br />
NO<br />
Replace TA, Check IFC502<br />
YES<br />
The pin #5<br />
of U200 is<br />
"low"?<br />
NO<br />
check the U200,R255<br />
YES<br />
The pin #10 of U200<br />
NO<br />
3.5 ~ 4.2V? check the U200<br />
YES<br />
The pin #4 of U839<br />
is<br />
"High"?<br />
NO<br />
check the U839<br />
YES<br />
END<br />
3-7<br />
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Flow Chart of Troubleshooting<br />
3-8<br />
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Flow Chart of Troubleshooting<br />
3-9<br />
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Flow Chart of Troubleshooting<br />
3-1-4. Sim Part<br />
"Insert SIM" is displayed on the LCD<br />
The voltage is 2.8V<br />
at the pin #6 of SIM200?<br />
NO<br />
Check the U838<br />
YES<br />
Is there any signal<br />
pin #1,2,4 of SIM200 ?<br />
NO<br />
Check the U838 & UCP300<br />
YES<br />
Check the SIM Card<br />
END<br />
3-10<br />
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Flow Chart of Troubleshooting<br />
SIM200<br />
SIM_IO<br />
SIM_CLK<br />
SIM_RST<br />
VSIM<br />
11<br />
2 2<br />
3 3<br />
4 4<br />
5 5<br />
6 6<br />
7<br />
NC<br />
8<br />
NC<br />
C208<br />
C204<br />
C205<br />
C206<br />
C207<br />
3-11<br />
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Flow Chart of Troubleshooting<br />
3-1-5. Speaker Part<br />
There is no sound from speaker<br />
Is the terminal of speaker O.K?<br />
NO<br />
Replace the speaker<br />
YES<br />
Are there any signal<br />
at the pin #1, 3 of CN400?<br />
NO<br />
Check the CN400<br />
YES<br />
YES<br />
Are there any signal at the<br />
pin #J4,J5 of UCD400?<br />
NO<br />
the voltage of L400 is 3.3V? check R414, R415?<br />
NO<br />
YES<br />
Check U202<br />
the voltage of<br />
C247 is 1.8V?<br />
YES<br />
NO<br />
Check U208<br />
Are there any signal at the pin<br />
#G8,F9,G9 of UCD400?<br />
NO<br />
Check UCP400<br />
YES<br />
Check U838<br />
END<br />
3-12<br />
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C2<br />
B2<br />
EN<br />
PVDD<br />
NC<br />
NC<br />
Flow Chart of Troubleshooting<br />
VBAT<br />
L401<br />
DAC_SPKP<br />
C450<br />
R442<br />
A1<br />
B1<br />
VDD<br />
VIP<br />
A2<br />
VSS<br />
U403<br />
VOM<br />
PVSS<br />
A3<br />
B3<br />
L402<br />
SAPA_N<br />
DAC_SPKM<br />
C451<br />
R443<br />
C1<br />
VIM<br />
VOP<br />
C3<br />
L403<br />
SAPA_P<br />
1<br />
2<br />
AMP_EN<br />
R446<br />
C453<br />
C452<br />
R447<br />
R448<br />
TA400<br />
C458<br />
VBAT<br />
C448<br />
C449<br />
U401<br />
1 V+<br />
NO2 10<br />
SAPA_N<br />
SAPA_P<br />
2 NO1<br />
COM2 9<br />
SPK_N<br />
SPK_P<br />
3 COM1<br />
IN2 8<br />
AMP_EN<br />
AOUTAP<br />
R445<br />
4 IN1<br />
5 NC1<br />
GND<br />
11<br />
NC2 7<br />
GND 6<br />
R444<br />
AOUTAN<br />
C454<br />
C455<br />
SPK_P<br />
SPK_N<br />
MOT_3.3V<br />
CN400<br />
1 1 2 2<br />
3 3 4 4<br />
5 5 6 6<br />
7 7 8 8<br />
9 9 10 10<br />
NC NC<br />
11 12<br />
3-13<br />
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Flow Chart of Troubleshooting<br />
3-14<br />
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Flow Chart of Troubleshooting<br />
3-1-6. Camera Part<br />
Camera function does not work<br />
Check the connect CN503?<br />
NO<br />
Connect the CN503<br />
YES<br />
Pin #5 of U208= 1.8V?<br />
NO<br />
Check the U208&L201<br />
YES<br />
YES<br />
Pin #4 of U205 =2.8V?<br />
NO<br />
Pin #1 of U205 = High?<br />
NO<br />
Check<br />
UCP300<br />
YES<br />
Pin#3 of OSC400 is 24MHz?<br />
NO<br />
Replace OSC400<br />
and check UCP300<br />
YES<br />
Is that clock signal at the<br />
NO<br />
pin #3 of CN503?<br />
YES<br />
Pin#13 of CN503 is High?<br />
NO<br />
Check<br />
UCP400<br />
END<br />
3-15<br />
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3<br />
2<br />
F200<br />
1<br />
VR540<br />
BLM15AG102SN1D<br />
VR542<br />
VR543<br />
VR544<br />
VR545<br />
VR546<br />
VR547<br />
C510<br />
Flow Chart of Troubleshooting<br />
VCAM_2.8V<br />
L500<br />
VCAM_1.5V<br />
CAM_MCLK<br />
CAM_SCL<br />
Y(7)<br />
Y(6)<br />
CAM_SDA<br />
HSYNC<br />
CAM_RESET<br />
VSYNC<br />
Y(0)<br />
Y(1)<br />
Y(5)<br />
Y(4)<br />
Y(3)<br />
Y(2)<br />
CAM_PCLK<br />
C513<br />
C514<br />
C515<br />
C516<br />
C517<br />
C518<br />
C519<br />
C520<br />
C527<br />
L501<br />
VBAT<br />
VLDO_1.5V<br />
HPEIO_1.8V<br />
U208<br />
1<br />
VIN SW 5<br />
2 GND<br />
L201<br />
3<br />
EN<br />
FB<br />
4<br />
TA205<br />
C247<br />
VBAT<br />
VCAM_2.8V<br />
U205<br />
VCAM_EN<br />
C245<br />
3 VIN<br />
4<br />
2 GND<br />
1<br />
STBY<br />
GND<br />
6<br />
VOUT<br />
NC<br />
5<br />
C243<br />
3-16<br />
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Flow Chart of Troubleshooting<br />
3-17<br />
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Flow Chart of Troubleshooting<br />
3-1-7. Mp3 Part<br />
There is no MP3 sound from Earphone<br />
Are there any signal<br />
at the pin #9 of CN502?<br />
YES<br />
Replace the Earphone<br />
NO<br />
Are there any signal<br />
at the pin #5,7 of CN502?<br />
YES<br />
Check C422, C423<br />
and VR526, VR527<br />
NO<br />
Are there any signal<br />
at the pin #C8,D8 of UCD400?<br />
YES<br />
The voltage of L400<br />
is 3.3V?<br />
YES<br />
Check<br />
UCD400<br />
NO<br />
NO<br />
The voltage of C237<br />
is 3.3<br />
NO<br />
The voltage of<br />
R213 is 1.8<br />
YES<br />
Check<br />
U202<br />
YES<br />
NO<br />
Check the UCD400<br />
Check U838<br />
Check the CN502<br />
END<br />
Check the UCP300<br />
END<br />
3-18<br />
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VR520<br />
VR521<br />
VR522<br />
VR523<br />
VR524<br />
VR525<br />
VR526<br />
VR527<br />
VR528<br />
VR529<br />
ZD505<br />
ZD504<br />
C531<br />
C530<br />
R512<br />
R507<br />
C433<br />
C434<br />
D9<br />
E2<br />
F2<br />
G2<br />
H2<br />
C2<br />
D2<br />
DVSS<br />
DRVSS<br />
DRVSS<br />
AVSS_DAC<br />
AVSS_DAC<br />
AVSS_ADC<br />
AVSS_ADC<br />
TA401<br />
IOVDD<br />
VDDA1<br />
VDDA1<br />
VDDA1<br />
DVDD<br />
AVDDA2<br />
C424<br />
C425<br />
C9<br />
B1<br />
C1<br />
H1<br />
H9<br />
J1<br />
C418<br />
C419<br />
C421<br />
C459<br />
C420<br />
Flow Chart of Troubleshooting<br />
DAC_3.3V<br />
HPEIO_1.8V<br />
L400<br />
VCCA_2.8V<br />
MICP<br />
MICN<br />
C429<br />
DAC_SPKP<br />
DAC_SPKM<br />
CSP_MICP<br />
CSP_MICN<br />
FMA_R<br />
FMA_L<br />
C428<br />
1UF<br />
C430<br />
1UF<br />
AOUTBP<br />
AOUTBN<br />
C436 C437<br />
C432<br />
C431<br />
R415<br />
R414<br />
R416<br />
R417<br />
J6<br />
J7<br />
J4<br />
J5<br />
J2<br />
J3<br />
B2<br />
A2<br />
A1<br />
B3<br />
A9<br />
A8<br />
B9<br />
B8<br />
B4<br />
A3<br />
A4<br />
B5<br />
B7<br />
B6<br />
A6<br />
A5<br />
RIGHT_LOP<br />
RIGHT_LOM<br />
LEFT_LOP<br />
HPROUT<br />
HPRCOM<br />
HPLOUT<br />
LEFT_LOM<br />
HPLCOM<br />
MONO_LOP<br />
MONO_LOM<br />
GPIO2<br />
GPIO1<br />
MICDET<br />
MICBIAS<br />
DOUT<br />
MIC3R<br />
DIN<br />
MIC3L<br />
UCD400 SELECT<br />
MFP3<br />
SDA<br />
TLV320AIC33IZQER<br />
MFP2<br />
SCL<br />
MFP1<br />
/RESET<br />
MFP0<br />
MCLK<br />
WCLK<br />
LINE2RP<br />
BCLK<br />
LINE2RM<br />
LINE2LP<br />
NC<br />
LINE2LM<br />
LINE1RP<br />
LINE1RM<br />
LINE1LP<br />
LINE1LM<br />
NC<br />
NC<br />
G1<br />
F1<br />
D1<br />
E1<br />
J8<br />
J9<br />
F8<br />
E9<br />
E8<br />
D8<br />
C8<br />
H8<br />
G8<br />
F9<br />
G9<br />
1<br />
2<br />
A7<br />
D_SDIN<br />
D_SDOUT<br />
D_SDA<br />
D_SCL<br />
DAC_RESET<br />
D_MSCK<br />
D_LRCK<br />
D_BCK<br />
C422<br />
C423<br />
IF_EAR_R<br />
IF_EAR_L<br />
HPEIO_1.8VVCCD_2.8V<br />
USB_5V VBAT<br />
R505<br />
R506<br />
R504<br />
FM_ANT<br />
EAR_MIC_P<br />
EAR_MIC_N<br />
IF_EAR_R<br />
IF_EAR_L<br />
EAR_SWITCH<br />
JACK_IN<br />
EAR_ADC<br />
T_OPT<br />
SDS_RXD<br />
JIG_ON_IF<br />
USB_D+<br />
USB_D-<br />
TA_VEXT<br />
100K<br />
100K<br />
180K<br />
R508<br />
R509<br />
R510<br />
R511<br />
CN502<br />
1 1<br />
2<br />
2<br />
3 3<br />
4<br />
4<br />
5 5<br />
6<br />
6<br />
7 7<br />
8<br />
8<br />
9 9<br />
10<br />
10<br />
11 11<br />
12<br />
12<br />
13<br />
13<br />
14<br />
14<br />
15 15<br />
16<br />
16<br />
17 17<br />
18<br />
18<br />
19 19<br />
20<br />
20<br />
21 NC NC 25<br />
22<br />
26<br />
NC NC<br />
23<br />
27<br />
NC NC<br />
24<br />
NC 28<br />
NC<br />
HPEIO_1.8V VBAT<br />
R213<br />
C236<br />
DAC_3.3V<br />
U202<br />
3 VIN<br />
VOUT 4<br />
2 GND<br />
1<br />
NC 5<br />
STBY<br />
GND<br />
6<br />
C237<br />
ZD503<br />
C529<br />
C528<br />
3-19<br />
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Flow Chart of Troubleshooting<br />
3-20<br />
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Flow Chart of Troubleshooting<br />
3-1-8. External Battery<br />
The <strong>SGH</strong>-<strong>F300</strong> does not detect<br />
the external battery<br />
Check the state of the 3-pin connector<br />
between <strong>SGH</strong>-<strong>F300</strong> and External battery, External battery voltage.<br />
Check the state of 3-pin connector<br />
In external battery is OK?<br />
NO<br />
Replace the external battery<br />
YES<br />
Check the voltage of<br />
External Battery<br />
Vext > 3.2 ?<br />
NO<br />
Replace the external battery<br />
YES<br />
Check the voltage of<br />
External Battery<br />
Vext > 3.2 ?<br />
NO<br />
Replace the 3-pin connector in <strong>SGH</strong>-<strong>F300</strong><br />
YES<br />
END<br />
3-21<br />
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Flow Chart of Troubleshooting<br />
GND<br />
Vf<br />
Vext<br />
Pin A rray of external<br />
battery<br />
T he 3-pin connector of SG H -<strong>F300</strong><br />
T he 3-pin connector of external<br />
battery<br />
3-22<br />
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Flow Chart of Troubleshooting<br />
3-1-9. BLUETOOTH<br />
BT connection disable<br />
check BT function ON<br />
Check the S/W<br />
Is the Antenna of BT OK?<br />
Change BT Antenna<br />
check the BT_EN R120<br />
R120 is High?<br />
replace UCP300<br />
Is the voltage 1.8V<br />
at C140 or at pin#3 of U103<br />
Change BT Antenna<br />
END<br />
3-23<br />
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Flow Chart of Troubleshooting<br />
3-24<br />
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Flow Chart of Troubleshooting<br />
Layout<br />
ㅠㅂ<br />
3-25<br />
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Flow Chart of Troubleshooting<br />
3-2.RF<br />
3-2-1. EGSM RX<br />
Continuous RX ON<br />
RF Input :62CH<br />
AMP :-50dBm<br />
NORMAL CONDITION<br />
Catch the channel ?<br />
NO<br />
Check soldered status of<br />
R121<br />
YES<br />
DUF100 Check<br />
Pin #13 ≥ -65dBm ?<br />
NO<br />
RFS100, C103, L100<br />
Resolder or Change<br />
YES<br />
DUF100 Check<br />
Pin #5,6 ≥ -65dBm ?<br />
NO<br />
DUF100 Resolder or Change<br />
YES<br />
U100 Check<br />
Pin#6, 7 ≥ -65dBm ?<br />
NO<br />
Check soldered status of<br />
L102, L103, C112<br />
YES<br />
U100 Check<br />
Pin#34 =Clean 2.8V?<br />
YES<br />
NO<br />
C106<br />
Check or resolder<br />
U100 Check<br />
Pin#35,36,37,38=100mV?<br />
NO<br />
YES<br />
U100 Check<br />
Pin #21 : 26MHz ?<br />
Vpp :1.1V?<br />
NO<br />
R113 =26MHz ?<br />
Vpp =1.2V?<br />
NO<br />
R111 = 2.8V ?<br />
NO<br />
YES YES YES<br />
U100<br />
Change or resolder<br />
C125, C129<br />
resolder<br />
TCX100<br />
Change or resolder<br />
Check U838<br />
3-26<br />
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Flow Chart of Troubleshooting<br />
3-2-2. DCS RX<br />
Continuous RX ON<br />
RF Input : 660 CH<br />
AMP :-50dBm<br />
NORMAL CONDITION<br />
Catch the channel ?<br />
YES<br />
NO<br />
Check soldered status of<br />
R121<br />
DUF100 Check<br />
Pin #13 ≥ -65dBm ?<br />
NO<br />
RFS100, C103, L100<br />
Resolder or Change<br />
YES<br />
DUF100 Check<br />
Pin #3,4 ≥ -65dBm ?<br />
NO<br />
DUF100 Resolder or Change<br />
YES<br />
U100 Check<br />
Pin#8,9 ≥ -65dBm ?<br />
NO<br />
Check soldered status of<br />
L104, L105<br />
YES<br />
U100 Check<br />
Pin#34 =Clean 2.8V?<br />
NO<br />
C106<br />
Check or resolder<br />
YES<br />
U100 Check<br />
Pin#35,36,37,38=100mV?<br />
NO<br />
YES<br />
U100 Check<br />
Pin #21 : 26MHz ?<br />
Vpp :1.1V?<br />
NO<br />
R113 = 26MHz ? NO<br />
Vpp :1.2V? R111 = 2.8V ?<br />
NO<br />
YES YES YES<br />
U100<br />
Change or resolder<br />
C125, C129<br />
resolder<br />
TCX100<br />
Change or resolder<br />
Check U838<br />
3-27<br />
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Flow Chart of Troubleshooting<br />
3-2-3. PCS RX<br />
Continuous RX ON<br />
RF Input : 660 CH<br />
AMP :-50dBm<br />
NORMAL CONDITION<br />
Catch the channel ?<br />
YES<br />
NO<br />
Check soldered status of<br />
R121<br />
DUF100 Check<br />
Pin #13 ≥ -65dBm ?<br />
NO<br />
RFS100, C103, L100<br />
Resolder or Change<br />
YES<br />
DUF100 Check<br />
Pin #8,9 ≥ -65dBm ?<br />
NO<br />
DUF100 Resolder or Change<br />
YES<br />
UCP100 Check<br />
Pin#1,2 ≥ -65dBm ?<br />
NO<br />
Check soldered status of<br />
L106, L107<br />
YES<br />
U100 Check<br />
Pin#34 =Clean 2.8V?<br />
NO<br />
C106<br />
Check or resolder<br />
YES<br />
U100 Check<br />
Pin#35,36,37,38=100mV?<br />
NO<br />
YES<br />
U100 Check<br />
Pin #21 : 26MHz ?<br />
Vpp :1.1V?<br />
NO<br />
R113 = 26MHz ?<br />
Vpp :1.2V?<br />
NO<br />
R111 = 2.8V ?<br />
NO<br />
YES YES YES<br />
Check U838<br />
U100<br />
Change or resolder<br />
C125, C129<br />
resolder<br />
TCX100<br />
Change or resolder<br />
3-28<br />
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C124<br />
C122<br />
R107<br />
20<br />
19<br />
18<br />
17<br />
16<br />
15<br />
14<br />
13<br />
12<br />
C113<br />
C115<br />
XTUNE<br />
13MHZ_26MHZ|XBUF<br />
LPFADJ<br />
COMPN<br />
COMPP<br />
VAPC<br />
TXRFIN<br />
VCC4<br />
RXENA<br />
VCC3<br />
LOMON<br />
VDIGENA<br />
IP|TX_IP<br />
IM|TX_IM<br />
QM|TX_QM<br />
QP|TX_QP<br />
TXLB<br />
TXHB<br />
GND<br />
32<br />
33<br />
34<br />
35<br />
36<br />
37<br />
38<br />
39<br />
40<br />
41<br />
Flow Chart of Troubleshooting<br />
TP<br />
R121<br />
ANT<br />
VBAT<br />
C101<br />
C102<br />
TP<br />
VRF_2.8V<br />
RTX_QP<br />
RTX_QN<br />
RTX_IN<br />
RTX_IP<br />
MOD_SEL<br />
GSM74137_OUT<br />
DCS74137_OUT<br />
C103<br />
L100<br />
C105<br />
C106<br />
C107<br />
C108<br />
XOENA<br />
SX_EN<br />
SERCLK<br />
SERLE<br />
SERDAT<br />
CLK26M<br />
31<br />
30<br />
29<br />
28<br />
27<br />
26<br />
25<br />
24<br />
23<br />
22<br />
21<br />
NC<br />
NC<br />
NC<br />
NC<br />
CHIPENA<br />
SXENA<br />
CLK<br />
LATCHENABLE<br />
DATAIN<br />
VCC2<br />
XTAL<br />
U100<br />
VCC1<br />
TXENA<br />
VPC<br />
850LNA_N<br />
850LNA_P<br />
900LNA_N<br />
900LNA_P<br />
1800LNA_N<br />
1800LNA_P<br />
1900LNA_N<br />
1900LNA_P<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
TX_EN<br />
VPC<br />
L102<br />
GSM_TX_EN<br />
DCS_TX_EN<br />
GSM_OUT<br />
DPCS_OUT<br />
L103<br />
C112<br />
C114<br />
R108<br />
RX_EN<br />
TX_FB<br />
VAPC<br />
SAT_DET<br />
L104<br />
L105<br />
C117<br />
C121<br />
L106<br />
L107<br />
C123<br />
13M_BUF<br />
VRF_2.8V<br />
R111<br />
AFC<br />
R112<br />
C126<br />
C125<br />
R113<br />
CLK26M<br />
C129<br />
3-29<br />
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Flow Chart of Troubleshooting<br />
3-30<br />
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Flow Chart of Troubleshooting<br />
3-2-4. EGSM TX<br />
DUF100 Pin#13<br />
About 2~3 dBm?<br />
NO<br />
DUF100<br />
Pin#11 = High?<br />
NO<br />
U838<br />
Check & Change<br />
YES<br />
YES<br />
DUF100, C103<br />
Check & Change<br />
NO<br />
Level of<br />
DUF100 Pin#10 is<br />
4~5dBm ?<br />
YES<br />
DUF100<br />
Check & Change<br />
Continuous TX ON condition<br />
TX Power Code : 500 code Applied<br />
CH :62<br />
RBW : 100KHz<br />
VBW : 100KHz<br />
SPAN :10MHz<br />
REF. Level :10dBm<br />
ATT. :20dB<br />
C120<br />
>= 3.7V?<br />
YES<br />
NO<br />
Check the<br />
Battery Block<br />
Level of PAM100<br />
Pin #6 is<br />
1.2V?<br />
NO<br />
Check<br />
U838 TXP OK ?<br />
NO<br />
U838<br />
Check & Change<br />
YES<br />
YES<br />
YES<br />
PAM100 pin#12<br />
About -5 dBm?<br />
NO<br />
PAM100 pin#7<br />
High ?<br />
NO<br />
Check U838<br />
YES<br />
Change PAM100<br />
C106 ≥ 2.8V ?<br />
NO<br />
C105,107,108,U838<br />
Check or resolder<br />
YES<br />
U100 Check<br />
Pin #21 : 26MHz ?<br />
Vpp :1.1V?<br />
NO<br />
R113 = 26MHz ?<br />
Vpp :1.2V?<br />
NO<br />
R111 = 2.8V ?<br />
NO<br />
YES YES YES<br />
NO<br />
U100 Pin<br />
#34, = 2.8V?<br />
C125, C129<br />
resolder<br />
TCX100<br />
Change or resolder<br />
YES<br />
Check U838<br />
Change PAM100<br />
3-31<br />
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Flow Chart of Troubleshooting<br />
3-2-5. DCS/PCS TX<br />
DUF100 Pin#13<br />
About 2~3 dBm?<br />
NO<br />
DUF100<br />
Pin#9 =High?<br />
NO<br />
U838<br />
Check & Change<br />
YES<br />
YES<br />
DUF100, C103<br />
Check & Change<br />
NO<br />
Level of<br />
DUF100 Pin#8 is<br />
4~5dBm ?<br />
YES<br />
DUF100<br />
Check & Change<br />
Continuous TX ON condition<br />
TX Power Code : 500 code Applied<br />
CH : 698<br />
RBW : 100KHz<br />
VBW : 100KHz<br />
SPAN :10MHz<br />
REF. Level :10dBm<br />
ATT. :20dB<br />
C120<br />
>= 3.7V?<br />
YES<br />
NO<br />
Check the<br />
Battery Block<br />
Level of PAM100<br />
Pin #6 is<br />
1.2V?<br />
NO<br />
Check<br />
U838 TXP OK ?<br />
NO<br />
U838<br />
Check & Change<br />
YES<br />
YES<br />
YES<br />
PAM100 pin#14<br />
About -5 dBm?<br />
NO<br />
PAM100 pin#2<br />
High ?<br />
YES<br />
NO<br />
Check U838<br />
Change PAM100<br />
C106 ≥ 2.8V ?<br />
NO<br />
C105,107,108,U838<br />
Check or resolder<br />
YES<br />
U100 Check<br />
Pin #21 : 26MHz ?<br />
Vpp :1.1V?<br />
NO<br />
R113 =26MHz ?<br />
Vpp :1.2V?<br />
NO<br />
R111 = 2.8V ?<br />
NO<br />
YES<br />
YES<br />
YES<br />
NO<br />
U100 Pin<br />
#34, = 2.8V?<br />
C125, C129<br />
resolder<br />
TCX100<br />
Change or resolder<br />
YES<br />
Check U838<br />
Change PAM100<br />
3-32<br />
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R106<br />
R110<br />
C116<br />
R109<br />
C118<br />
C119<br />
C120<br />
C110<br />
C111<br />
R104<br />
R105<br />
Flow Chart of Troubleshooting<br />
VBAT<br />
PAM100<br />
PAC_EN<br />
DCS74137_OUT<br />
BAND_SEL<br />
C104<br />
1 ENA COUP_OUT 16<br />
2 DCS|PCS_IN GND 15<br />
3 BS DCS|PCS_OUT 14<br />
4 VSUP<br />
GND 13<br />
R101<br />
DPCS_OUT<br />
R100<br />
TX_FB<br />
VPC<br />
GSM74137_OUT<br />
SAT_DET<br />
R102<br />
C109<br />
R103<br />
5 VBATT<br />
6 VPC<br />
7 GSMIN<br />
8 RSVD<br />
GND<br />
17<br />
GSM_OUT 12<br />
GND 11<br />
GND 10<br />
GND 9<br />
L101<br />
GSM_OUT<br />
3-33<br />
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