Nokia RH-99 Service Manual page 51

RH-99; RH-100; RH-105; RH-106
Baseband troubleshooting
General baseband troubleshooting......................................................................................................................4-5
Important test points .......................................................................................................................................4-5
Flash programming does not work.................................................................................................................4-5
Phone doesn't switch on ..................................................................................................................................4-7
Switch off ..........................................................................................................................................................4-8
Display shows "Contact Service" ......................................................................................................................4-8
The phone does not register to the networks, or the phone can not make a call.....................................4-9
SIM related faults.................................................................................................................................................
Insert SIM card fault
SIM card rejected ............................................................................................................................................
User interface.......................................................................................................................................................
Blank display...................................................................................................................................................
Display is corrupt............................................................................................................................................
Dead keys ........................................................................................................................................................
No backlight for display or keys
Audio troubleshooting........................................................................................................................................
Audio troubleshooting using phoenix
Check microphone using "Hp microphone in Ext speaker out" loop
Check earpiece using "Ext microphone in Hp speaker out" loop
Check IHF function using "Ext microphone in IHF speaker out" loop
Check vibra function using "Vibra
Earpiece fault ..................................................................................................................................................
IHF/ringing tone fault
Microphone fault ............................................................................................................................................
List of Figures
Figure 8 Test points for power suppliers .............................................................................................................4-5
Figure 9 Flash programming fault........................................................................................................................4-6
Figure 10 Troubleshooting when the phone doesn't switch on .......................................................................4-7
Figure 11 Switch off troubleshooting ..................................................................................................................4-8
Figure 12 Troubleshooting when the "Contact Service" message is seen .......................................................4-9
Figure 13 No registering or call
Figure 14 Insert SIM card fault
Figure 15 Signal diagram
Figure 16 Signal diagram
Figure 17 Blank display.......................................................................................................................................
Figure 18 Display is corrupt................................................................................................................................
Figure 19 Dead keys ............................................................................................................................................
Figure 20 No backlight for display or keys
Figure 21 Phoenix audio test window
Figure 22 PWB audio test points
Figure 23 Test arrangement for
Figure 24 Test arrangement for earpiece
Figure 25 Checking IHF function by using "Ext microphone in IHF speaker out"
Figure 26 Checking vibra function by using vibra control
Figure 27 Earpiece fault flow chart
Figure 28 IHF/ring tone fault flow chart
Figure 29 Microphone fault flow
Issue 2
Table of Contents
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COMPANY CONFIDENTIAL
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