PAMS Technical Documentation Troubleshooting
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Troubleshooting...................................................................................................1
Abbreviations used......................................................................................................... 7
CMT Troubleshooting..........................................................................................8
Baseband Testpoints ...................................................................................................... 8
Power Schematic - Plots ............................................................................................10
CPU Schematic - Plots ...............................................................................................11
Troubleshooting Charts for CMT ................................................................................ 12
1. Phone is Dead ........................................................................................................12
2. Flash Programming Does Not Work ....................................................................13
2.1 Flash programming diagram (1)....................................................................... 14
2.2 Flash programming diagram (2)....................................................................... 15
3. Phone Stays On or is Jammed ...............................................................................16
3.1 Troubleshooting diagram,ad.3........................................................................... 16
4. Display Information : “Contact Service” ..............................................................17
5. No network found, No Call established .................................................................18
6. Phone does not register to network .......................................................................19
7. Sim Related Errors ...............................................................................................20
7.1 "Insert SIM card" error...................................................................................... 20
7.2 "SIM card rejected" error ................................................................................. 21
8. Audio Faults.......................................................................................................... 22
9. Charging Error .......................................................................................................24
RF Troubleshooting.......................................................................................... 25
RF Key Component Placement.................................................................................... 26
RF Component Locations ............................................................................................ 27
GSM900 Receiver Troubleshooting ............................................................................ 29
General instructions for GSM900 RX troubleshooting .............................................29
10.Troubleshooting chart for GSM900 receiver ........................................................31
GSM900 Signal path ..................................................................................................31
RX/TX Switch......................................................................................................... 31
Front-end................................................................................................................. 32
Hagar....................................................................................................................... 32
GSM1800 Receiver Troubleshooting .......................................................................... 33
General instructions for GSM1800 RX troubleshooting ...........................................33
11. Troubleshooting chart for GSM1800 receiver .....................................................35
PCN Signal path ........................................................................................................36
RX/TX Switch......................................................................................................... 36
Front-end................................................................................................................. 36
Hagar....................................................................................................................... 37
GSM900 Transmitter ................................................................................................... 37
General instructions for GSM900 TX troubleshooting .............................................37
Troubleshooting for GSM900 transmitter .................................................................39
Troubleshooting in output power............................................................................ 39
Troubleshooting modulation ................................................................................... 41
PCN Transmitter .......................................................................................................... 43
12. General instructions for PCN TX troubleshooting ..............................................43
13. Troubleshooting chart for PCN transmitter .........................................................44
Synthesizer................................................................................................................... 45
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