26MHz

MAIN CLK
8-1. Block Diagram

RF Block EGSM Tx VDD_IO_2.8V

EGSM_TX
MAIN LCD
DCS Tx LCD_RST
DCS /PCS_TX LCD controller 1.52"
MD(0:7) /CS/RS/WR/RD
(128x128)
* GSM EGSM Rx EGSM Rx_P/N
Rx : 925 ~ 960MHz VBAT
Tx : 880 ~ 915MHz EGSM_RX_P/N RF
* DCS TX Module DCS Rx Dual SAW
DCS Rx_P/N
(AM7808-CLT)
8. Level 3 Repair

Rx : 1805 ~ 1880MHz DCS_RX_P/N LCD_BL WHTLED_IB0/1

Tx : 1710 ~ 1785MHz

PCS_RX_P/N

RX_SEL / BAND_SEL / PON_PA / RAMP RCV_EN

VBAT RFCTL

REC_P_BB
EARP
SPK_P
REC_N_BB
EARN ANALOG SWITCH
SPK_P_BB (ET5223) SPK_N
RTC OUTPPA
SPK_N_BB SPEAKER
OUTNPA
32K_DIGIT(For FM radio only)
VSIM0_3.0V

SIM0_IO
SIM 1 MIC_P
SIM0_RST SIM 1 MIC_P
SIM0_CLK Modem MIC_N
MIC

(SC6500)
SIM 2 AUDIO

ARM9, 208MHz
(10 x 10mm) AMP_EN

H.264 HEAD_P_R EAR_P

Dual SIM EAR AMP
GSM /GPRS

8-1
(NCP2811)
HEAD_P_N EAR_N
32MB+32MB IMBEDDED MEMORY
EAR_ADC_3.5
HEADMIC_IN

HEADMIC_P AUX_MIC_P

AUX_MIC_N
HEADMIC_N

USB_DP/DM
USB
UART_RXD/TXD
UART1

EAR_ADC_3.5
TEMP
VF ADC
JIG_ON VBAT S20 Connector
(HY20-AB0310)
VBAT
Charging VBATSEN
MOTOR M VIB_CTRL
VCHG
VIBR_OUT
Li-Ion Battery LINEAR USB_5V
MAIN KEY (Standard)
800mAh
CHARGER
LED(1:4) KEY_LED_CTRL VBAT (RT9532GQW)
KP_OUT
KEYPAD
C VDDCORE_1V1
KEY_IN(0:4) VDDRF_2V8
KEYIN[0:7]
PMU
LDO & VMEM_1V8
KEY_OUT(0:4)
KEYOUT[0:6] DCDC
VSIM0_1/2_3V0
KEY
VMEM_SPI_1.8V
ONKEY
PBINT

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Level 3 Repair

8-2. PCB Diagrams

8-2-1. Top

LCD300

UP
SOFT300

SOFT301
RIGHT
LEFT

OK
SEND

END
DOWN
KE
0
0

Y_
Y _3

KEY_301
02
KE

LED302

LED303
KE

KEY_305
Y _3

KEY_304
30

KEY_308
KEY_306
KEY_307
LED301
LED300

STAR SHARP

KEY_309

R12 0 R1 1 8 R114 R1 1 5

8-2
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 Level 3 Repair

8-2-1. Bottom

LED204

SPK200

TR100
C157
C219 ZD200
ZD201

C225

R13 0
R212
C226

V200
C161

R220

C220
U202
C210 R132

R131
R201
R211 R209

ZD205
C212
R214
L205
IFC200

R213
L204

C211
C206

MOT100

R124
R134

R128
R208

C160
R200
L203

R138

V100
C209
ZD204

U104
R125
R139 C163

C159
L202

R126

R133
R129
ZD100

L200

L201

BTC100

SIM200

TP103 R137 C170

C162 R136

C158
C155

C154
U103 L117

C153 C156

C152

TP102
TP101

R224

C236 C204
R225

R205
C239
R226

C205
C237
R229
R234

R233
C240

C227

R230

R231

CN101

SC105 SC108 SC103

R202 R206
R203 C200
C124

L101
R204
L113

R117
R118

R210 U201
C207
C123

C202
C110

C107

C213 C105
C208 C201 C133 C142
C103

C136

R215
C203 C101 C134 R143
OSC101

SC106

C140

C141

C217 C214

OSC100 C147
C135
C215

L100

U203 C102
SC109

C166
C165
C119

C113

C114
R216

SC104
PAM100

C100

R222
R219
R123
C118

C115
C108

C223
C224

C218
C216

L107 L109
C222
C221
R221

R147

L110

L111

R218
L108
C143

C14 4
R144

R145
F100
ZD203

UCP100 L103 L114 C149

L106
C146

C145
C138

C139
R146

L104

L115

C117

R122

R103
SC101
C128
R101

R102
C104

C112
SC107

C106

C125
C126

TP100 TP200
C127
C111

C109

R237

R207

C121

C122

C120

R140
R121
R223

SC102
C116

C164

R141
C232 R227 C151

TH100
R228

R236 C231 C230

C233

R217
C238
C235
R232

R148

R235

SC100

L212 L207
L102 RFS100
C229
ZD202

C131

C228
L116
C169

L206

C132
L208

MIC200
L210
L211

L209

R116
C234

R
12
0
R109

CON100
R108

R110
19
R1

R111

R115 R114 R113 R112

8-3
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Level 3 Repair

8-3. Flow Chart of Troubleshooting

※ presetting methods for checking TP

- GND & TP(exp. VBUS_5.0V= C159 using Oscilloscope
- look over the coming out signal.

← Oscilloscope

8-4
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 Level 3 Repair

8-3-1. Power On

Check Battery vol. more than

3.7V? Change the Battery
(TP:C163,C100,C102)
(Because of batt. power low)

Yes

No
VDD28 = 2.8V? Check the Main Chip related to
(TP:C127) VDDIO_2V8 (TP:C127)

Yes

Check the Main Chip

Check the Clock at No
UCP100 T1 pin (TP : OSC101 / look over the waverform
(CLK26M)=26MHZ
(TP:OSC101) using the oscilloscope)

Yes

VDDCORE_1V1 No Resolder C101,C103 and L100

= 1.1V?
(TP:L100,C101,C103) (to confirm coming out power V_core)

Yes

Check the initial operation

"Power On"

Yes

END

8-5
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Level 3 Repair

SC108
R212

C210

R201
R211 R209 U201

ZD205
C212
R214
L205
C213 C105
IFC200

C103
R213
L204
R215 C101

C211

OSC101
C206

SC106
R208

L100
R200
L203

R138

V100
C102
C209
ZD204
R139 C163
L202
C100

8-6
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 Level 3 Repair

8-3-2. Charging Part

Initial Failure

Yes

No Resolder or Replace IFC200

ZD205 or C160 = 5V ?
Must be 5V

Yes

No
C160 Resolder or Replace U104
≒ 5V ? (be possible that it is not soldering well)

Yes

END

8-7
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Level 3 Repair

TR100
C157
C219 ZD200
ZD201

C225

R13 0
R212
C226

V200

R220

C220
C161
U202
C210 R132

R131
R201
R211 R209

ZD205
C212

R214
L205

R213
L204
C211

C206

MOT100

R124
R134

R128
R208

C160
R200

L203
R138

V100

C209
ZD204

U104
R125
R139 C163

C159
L202

R126

R133
R129

8-8
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 Level 3 Repair

8-3-3. Sim Part

Initial Failure

Yes

No
SIM200 pin 1 Replace UCP100 or PBA

or C122 = "H=3.0V" ? insert SIM card & access it,

then must be sim pin1 or C122 = "H"

Yes

After Power ON,

Check SIMClk Signal on No
Resolder or Replace SIM200 connector.
pin3 of SIM200 in a few second
(Because of not soldering well)
(method : wiring pin 3 and checking
its waveform using an oscilloscope)

Yes

After SIM card insert,

SIM200 pin 2(SIM_RST) = No
"H=3.0V"?
(method : wiring pin 3 and check Confirm an another PBA
its waveform using an
oscilloscope)

Yes

Check the SIM Card

(look over if it get damaged.)

Yes

END

8-9
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Level 3 Repair

8-3-4. Microphone Part

Microphone does not work

Yes

No
C151 = "H=2.8V" Resolder or Replace UCP100
at Mic Active ?
(Because of not soldering well)

Yes

No
Check the MIC Connection Resolder R227,R228,R232,L206,L212,L207
C231,C235
(look over schematics about
schemetics.) (not work if those is not connected.)

Yes

Check the MIC sample. Replace an another MIC

No
(it be possible the problem (because of being possible the problem)
things)

Yes

END

8-10
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 Level 3 Repair

C126
TP100 TP200

C127
C111

C109

R237

R207

C121

C122

C120
R140

R121
R223
C164

R141
C232 R227 C151

TH100

R228
R236 C231 C230

C233
R217
C238
C235

R232
R148

R235

SC100

L212 L207
C229
ZD202

C228
L206

MICBIAS_2V8

R227

ZD202 C228 C229 R228 R232

C230
L206 MIC_P
L207 C231

MIC200

C232 C233

L212 MIC_N
C235

R236 R235
C238

8-11
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Level 3 Repair

8-3-5. Speaker Part

Speaker does not work

Yes

C225,C226
> 3.0 V No Resolder U201
(Wiring the SPK N/P and
checking an waveform using (be possible because of soldering not well)
oscilloscope)

Yes

No
Resolder or Replace UCP100
Does not work Voice call (be possible of soldering not well or being
? UCP a bad sample)

Yes

Does not work Ringtone? No

(Menu->settings->profiles Resolder or Replace UCP100
->options->Edit-> (be possible of soldering not well or being
select the Call ringtone) UCP100 a bad sample)

Yes

Is Speaker working? No Change Speaker ASS'Y

(Listening through the (be possible of SPK Problems
speaker) or not inserting it right.)

Yes

END

8-12
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 Level 3 Repair

SPK200
C219 ZD200
ZD201

C225
C226
V200

R220

C220
C161

U202

SPK200

SPK_P
SPK_N
ZD200

ZD201

C225 C226

8-13
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Level 3 Repair

8-3-6. Key Data Input

Check Initial Operation

Yes

No Change Domesheet
(#1 : look over the Dome situation
When you pushed all of the whether be sunken
Key, does the key have #2 : look over the Dome location
tension? whether be out of line)

Yes

All of the key doesn't work Yes Replace the PBA

(over the insturctions again
except POWER ON KEY ? and change the board
because of be possible for PBA to get damaged)

No

END

8-14
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 Level 3 Repair

8-3-7. Back Light (for Color Main LCD)

Is LCD Contrast set on high Set LCD Contrast on high level

level in the Menu? No
(menu->settings->display->light
(menu->settings->display- ->LCD contrast / select 5Level (level :1~5)
>light->
LCD contrast)

Yes

No
LCD200 12pin ="H>3.2V" ? Repalce LCD Module
(Wiring pin 12pin LED_A) (to check if it has the problem)

Yes

END

8-15
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Level 3 Repair

8-3-8. Key Back Light

LED200 = "H>3.3V" ? No
Resolder R217
(look over using an (must be coming out the signal "H")
Oscillocope)

Yes

No #1 : Replace the LED

Key LED does not work? (be possible that the sample has the problem)
(look over the LED light) #2 : Change PBA

Yes

END

8-16
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 Level 3 Repair

※ presetting 8960

(Rx setting)

1. Active Cell
: select GSM or GPRS
2. Connetion Type
: select Auto(GSM), BLER(GPRS)
3. BCH Parameter
: select measuring band (DCS or EGSM)
4. Cell power
: -60dBm

(Tx setting)

※ After setting 8960 ( EGSM / DCS )

1. After setting, prepare the call setup Display

2. Using an Originate Call, make a call.
3. Confirm the display "connected"
4. start the measuring

8-17
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Level 3 Repair

8-3-2. GSM900 Receiver

No
PAM100 Pin22 ≥
-65dBm Resolder L101,L113

Yes

No
PAM100 Pin25 ≥ No Check PAM100 Check ANT Switch
-68dBm pin25= L control circuit

Yes
Yes Resolder PAM100

No
F100
pin 6,7 ≥ -70dBm Resolder F100

Yes

UCP100 No
pin G1 ≥ -70dBm Resolder L114,L115,L103,L104
pin F1 ≥ -70dBm

Yes

Check & Resolder

C102,C100,C104,C128,L100,
C101, C103
And PMU Part and U200

Yes

END

8-18
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 Level 3 Repair

8-3-2. DCS Receiver

No
PAM100 Pin22 ≥
-65dBm Resolder L101,L113

Yes

No
PAM100 Pin26 ≥ No Check PAM100 Check ANT Switch
-68dBm pin26=L, 3 =H control circuit

Yes
Yes Resolder PAM100

No
F100
pin8, 9 ≥ -70dBm Resolder F100

Yes

UCP100 No
pin E1 ≥ -70dBm Resolder L109,L111,L107,L110
pin D1 ≥ -70dBm

Yes

Check & Resolder

C102,C100,C104,
C128,L100,
C101, C103
And PMU Part and
U200

Yes

END

8-19
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Level 3 Repair

SC105 SC108 SC103

R202 R206
R203 C200

C124
L101
R204 R117

L113

R118
R210 U201
C207

C123
C202

C110

C107
C213 C105
C208 C201 C133 C142

C103

C136
R215
C203 C101 C134 R143

OSC101

SC106

C140

C141
C217 C214

OSC100 C147
C135
C215

L100
U203 C102
SC109

C166
C165
C119

C113

C114
R216

SC104
PAM100
C100

R222
R219

R123
C118

C115
C108
C223
C224

C218
C216

L107 L109
C222
C221
R221

R147

L110

L111
R218
L108

C143

C14 4
R145
R144
F100
ZD203

UCP100 L103 L114 C149

L106

C146

C145
C139
C138
R146

L104

L115
C117

R122

R103 SC101
C128
R101

R102
C104

C112
SC107

C106

C125
C126

TP100 TP200
C127
C111

C109

R237

R207

C121

C122

C120

R140
R121
R223

SC102
C116

C164

R141
C232 R227 C151

TH100
R228

R236 C231 C230

C233

R217
C238
C235
R232

R148

R235

8-20
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 Level 3 Repair

8-3-2. GSM900 Transmitter

TX ON (5Level)

Yes

PAM100 Pin22 ≥ yes

30dBm Resolder L101,L113

No

Check PAM100 No
PAM100 pin7 ≥ -4 Yes Check ANT Switch
dBm pin 10 = H
Pin 12 = H control circuit

Yes
Change or Resolder PAM100

Yes Yes
Check PAM100 Check UCP100
VBATT(pin3,15) OK?

No
No Check VBAT or PAM
control signal
Yes
UCP100 pinA2 Resolder or Change
≥ -4dBm R145, C139

No

Check & Resolder

C102,C100,C104,
C128,L100,
C101, C103
And PMU Part and U200

Yes

END

8-21
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Level 3 Repair

8-3-2. DCS Transmitter

TX ON (5Level)
- Rx :
- Tx :
Yes

PAM100 Pin22 ≥ yes

30dBm Resolder L101,L113

No

Check PAM100 No
PAM100 pin6 ≥ -4 Yes
pin 12 = H Check ANT Switch
dBm control circuit
Pin 10 = H

Yes
Change or Resolder PAM100

Yes Yes
Check PAM100
VBATT(pin3,15) Check UCP100
OK?

No
No
Check VBAT or PAM
control signal
Yes
UCP100 pinA1 Resolder or Change
≥ -4dBm C138,R144

No

Check & Resolder

C102,C100,C104,
C128,L100,
C101, C103
And PMU Part and U200

Yes

END

8-22
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 Level 3 Repair

SC105 SC108 SC103

R202 R206
R203 C200

C124
L101
R204 R117

L113

R118
R210 U201
C207

C123
C202

C110

C107
C213 C105
C208 C201 C133 C142

C103

C136
R215
C203 C101 C134 R143

OSC101

SC106

C140

C141
C217 C214

OSC100 C147
C135
C215

L100
U203 C102
SC109

C166
C165
C119

C113

C114
R216

SC104
PAM100
C100

R222
R219

R123
C118

C115
C108
C223
C224

C218
C216

L107 L109
C222
C221
R221

R147

L110

L111
R218
L108

C143

C14 4
R145
R144
F100
ZD203

UCP100 L103 L114 C149

L106

C146

C145
C139
C138
R146

L104

L115
C117

R122

R103 SC101
C128
R101

R102
C104

C112
SC107

C106

C125
C126

TP100 TP200
C127
C111

C109

R237

R207

C121

C122

C120

R140
R121
R223

SC102
C116

C164

R141
C232 R227 C151

TH100
R228

R236 C231 C230

C233

R217
C238
C235
R232

R148

R235

8-23
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Level 3 Repair

8-4. Service Schematics

- Ball LFBGA Pin out(Top View)

UCP100

8-24
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.