User Guide
Table Of Contents
- 6-Troubleshooting
- Table of Contents
- Introduction to NMM-3 Troubleshooting
- General guidelines for NMM-3 trouble shooting
- Diagnostics
- Phone is Dead
- Flash Programming Fault
- SIM Card Fault (Insert SIM / Card Rejected)
- Keypad Fault
- Display Fault
- Illumination Fault
- Charger Fault
- Accessory Fault
- Audio Fault
- Camera Fault
- USB Fault
- GSM900/1800 TX Troubleshooting
- HELGO Troubleshooting
- PA and Antenna Switch Troubleshooting
- GSM900 RX Troubleshooting
- GSM1800 RX Troubleshooting
- GSM900/1800 Synthesizer Troubleshooting
- WCDMA Tx Troubleshooting
- PA and DC-DC Converter Troubleshooting
- WCDMA Rx Troubleshooting
- WCDMA Rx Synthesizer Troubleshooting
- WCDMA Tx Synthesizer Troubleshooting
- GSM/WCDMA Antenna Troubleshooting
- Test Points
- Calibration required when components changed
- BACK TO MAIN PAGE
CCS Technical Documentation 6-Troubleshooting
Company Confidential NMM-3
Issue 1 (11/2003) Copyright 2003 Nokia Corporation Page 6-5
Company Confidential
Diagnostics
Phone is Dead
Start
Is phone
current 0 mA?
Y
es
Will the phone
power-up in
Test or Local
mode?
Replace
X200
No
Check BSI
circuit R204
OK?
Y
es
Replace
R204
No
With the phone in
LOCAL mode, using
Phoenix check battery
voltage, recalibrate if
necessary.
Y
es
No
Is flash
programming
working?
Y
es
No
Flash fault
Check X200
(contact and
solder joints).
OK?
No
Are VFLASH1 and
V
IO enabled
momentarily at
power up?
Replace
UEME
D200
No
Y
es
Check RF-CLK
at both sides
of C300.
Is it
19.2MHz?
Check R822,
C300, C861,
C870 and
L899.
OK?
No
Y
es
Replace
G820
Y
es
Possible
problem with
TIKU, UEME, or
Memories.
Y
es
No
Replace
defective
part.
End