Gsm Problems; Wcdma I, Ii And V Problems - Sony Ericsson Cyber-Shot C905 Troubleshooting Manual
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Also See for Cyber-Shot C905:
- Manual (95 pages) ,
- User manual (88 pages) ,
- Working instructions (87 pages)
Table of Contents
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GSM Network Problems
START
Step 1:
Replace Loudspeaker Assembly and retest the Phone
If successful claim Loudspeaker Assembly
If not go to step 2.
Step 2:
Load ITP SW into the Phone
Perform SERP Calibration and retest the Phone
If successful claim SERP Calibration
If not go to step 3.
Step 3:
Disassembly the Phone and continue with the
GSM Network Problems TRS guide
SL 5 Replace
2.8 Volt DC at
N2000
MP 163 (C1218
No
SL 4 Escalate
LDOA_OUT)
Yes
2.8V DC
at MP 65 (C1207)
Replace
No
(If C905c Skip This
N1211
and Replace
N1200)
Claim Component
Yes
N1200
SL 5 Replace
N2010 or N2000
SL 4 Escalate
TROUBLESHOOTING
Max 0.5
Ohm between
MP 62 (X1200_Pin 1) and
No
MP 63 (X1200_Pin 2)
Yes
Is
MP 167 (X1210)
and MP 168 (X1211)
No
connected to GND
X1210 or X1211
(Shield Can
Fence)
Yes
Max
SL 5 Replace
1 Ohm between
Z1200, R1202 or
MP 166 (Z1200_Pin
No
IN) and MP 167
SL 4 Escalate
(X1210)
Yes
Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
Replace
Yes
N1200
Go to
SERP Calibration
Is the
GSM Network
Problem
solved
No
GSM Problems - WCDMA I, II and V Problems
Replace
X1200
Go to
GSM Network
Replace
Problems TRS guide
Replace
N1200
L1202
Go to
SERP Calibration
Replace
N1200
Replace
N1210
SL 5 Replace
L1200
SL 4 Escalate
Replace
N1210
Is the
WCDMA TX
Problem solved
Yes
WCDMA BAND I,II,V Network Problems
This TRS guide is NOT valid for C905c Phones
Load ITP 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
Is the
GSM Network
No
Ok
Yes
Fault Trace SW
TX and RX WCDMA
Radio Settings:
Is there
Select Band: BAND I
problems with
No
Yes
Fast select channels:
WCDMA TX
Set Low Channel
Modes: Max Pwr 23dBm
2.5V – 3V DC at
3V – 3.8V DC at
MP 143 (C1215
MP 145 (ST1201
Yes
Yes
WPA_A_EN)
No
1.8 Volt DC at
Disconnect:
MP 144 (R1210
Yes
VBATT and DCIO/SEPI
Is
SL 5 Replace
L1200 = Max 0.5 Ohm
No
SL 4 Escalate
Yes
SL 5 Replace
N2010 or N2000
No
SL 4 Escalate
Claim Component
N1210
SEMC Troubleshooting Manual
C905
START
NOTE !
Step 1:
Step 2:
Ch LOW
VCC_WPA)
No
WPA0_EN)
No
N2010
1222-9526 rev. 1
27
(124)
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Table of Contents
Troubleshooting
