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WCDMA BAND I,II,V Network Problems
START
NOTE !
This TRS guide can be used
ONLY
for C903 phones with WCDMA BAND I, II or V
Step 1:
Load ETS SW into the Phone
Perform SERP Calibration and retest the Phone
If successful claim SERP Calibration
If not go to step 2.
Step 2:
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Go to
Is the
GSM Network
No
GSM Network
Problems TRS guide
Ok
Yes
Is the
Replace
No
Problem with
Yes
N1200
WCDMA TX
2.5V – 3V DC at
Replace
Yes
MP 114 (C1215
N1200
WPA_A_EN)
Replace
No
N1210
Disconnect:
VBATT and DCIO/SEPI
Is L1200
Replace
No
= Max 0.5 Ohm
L1200
Replace
Yes
N1210
Is the
SL 5 Replace
WCDMA TX
No
N2000 or N2010
Problem solved
SL 4 Escalate
Claim Component
Yes
N1210
TROUBLESHOOTING
Fault Trace SW
TX and RX WCDMA
Radio Settings:
Select Band: BAND I
Fast select channels:
Set Low Channel
Ch LOW
Modes: Max Pwr 23dBm
3V – 3.8V DC at
Yes
MP 113 (C1206
VCC_WPA)
No
1.8 Volt DC at
Yes
MP 111 (R1220
WPA0_EN)
No
SL 5 Replace
N2010
SL 4 Escalate
WCDMA Problems
WCDMA BAND VIII Network Problems
START
This TRS guide can be used
ONLY
for C903 phones with WCDMA BAND VIII support
Load ETS SW into the Phone
Perform SERP Calibration and retest the Phone
If successful claim SERP Calibration
If not go to step 2.
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Go to
GSM Network
No
GSM Network
Problems TRS guide
Replace
No
Problem with
N1200
WCDMA TX
Go to
SERP Calibration
2.5V – 3V DC at
Replace
Yes
MP 116 (C1214
N1200
WPA_C_EN)
Replace
No
N1210
Disconnect:
VBATT and DCIO/SEPI
Replace
No
= Max 0.5 Ohm
L1200
Replace
Yes
N1210
Is the
SL 5 Replace
WCDMA TX
No
N2000 or N2010
Problem solved
SL 4 Escalate
Claim Component
Yes
SEMC Troubleshooting Manual
NOTE !
Step 1:
Step 2:
Is the
Ok
Yes
Fault Trace SW
TX and RX WCDMA
Radio Settings:
Is the
Select Band: BAND VIII
Yes
Fast select channels:
Set Low Channel:
Ch LOW
Modes: Max Pwr 23dBm
3V – 3.8V DC at
Yes
MP 113 (C1206
VCC_WPA)
No
1.8 Volt DC at
Yes
MP 112 (R1222
WPA2_EN)
No
Is L1200
SL 5 Replace
N2010
SL 4 Escalate
N1210
1228-1147 rev. 1
C903
29
(129)
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Table of Contents
Troubleshooting
