User Guide

Table of Contents
General baseband troubleshooting......................................................................................................................3–5
Key components................................................................................................................................................3–5
Power supply test points..................................................................................................................................3–6
Phone cannot be powered on (I).....................................................................................................................3–7
Phone cannot be powered on (II)....................................................................................................................3–9
Phone cannot be flashed............................................................................................................................... 3–10
Easy flash programming does not work...................................................................................................... 3–12
Display shows "Contact Service"................................................................................................................... 3–14
The phone does not register to the networks, or the phone cannot make a call................................... 3–15
SIM related faults................................................................................................................................................. 3–17
Insert SIM card fault....................................................................................................................................... 3–17
SIM card rejected............................................................................................................................................ 3–18
User interface....................................................................................................................................................... 3–18
Blank display................................................................................................................................................... 3–18
Corrupted display ........................................................................................................................................... 3–19
Dead keys ........................................................................................................................................................ 3–19
No backlight for display or/and keys ........................................................................................................... 3–20
Audio troubleshooting........................................................................................................................................ 3–21
Audio troubleshooting using phoenix......................................................................................................... 3–21
Check microphone using "Hp microphone in Ext speaker out" loop ........................................................ 3–22
Check earpiece using "Ext microphone in Hp speaker out" loop .............................................................. 3–23
Check IHF & ringing tone function using "Buzzer"...................................................................................... 3–23
Check vibra function using "Vibra control".................................................................................................. 3–24
Earpiece fault.................................................................................................................................................. 3–25
IHF/ringing tone fault.................................................................................................................................... 3–26
Microphone fault ............................................................................................................................................ 3–27
Headset earpiece fault................................................................................................................................... 3–28
Headset microphone fault............................................................................................................................. 3–29
List of Tables
Table 6 Connector for External Audio Accessories ........................................................................................... 3–22
List of Figures
Figure 10 RM-394_395 key components ..............................................................................................................3–5
Figure 11 RH-118 Key components.......................................................................................................................3–6
Figure 12 RM-394_395 Power supply test points................................................................................................3–6
Figure 13 RH-118 Power supply test points ........................................................................................................3–7
Figure 14 Troubleshooting when phone cannot be powered on .....................................................................3–8
Figure 15 Troubleshooting when phone does not stay on or phone is jammed ............................................3–9
Figure 16 Flash programming fault................................................................................................................... 3–11
Figure 17 Easy flash programming fault........................................................................................................... 3–13
Figure 18 Troubleshooting when the "Contact Service" message is seen .................................................... 3–15
Figure 19 No registering or call ......................................................................................................................... 3–16
Figure 20 Insert SIM card fault........................................................................................................................... 3–17
Figure 21 Signal diagram ................................................................................................................................... 3–18
Figure 22 Signal diagram ................................................................................................................................... 3–18
Figure 23 Phoenix audio test window.............................................................................................................. 3–21
Figure 24 4-pole jack plug for audio accessory................................................................................................ 3–22
RM-394; RM-395; RH-118
Baseband Troubleshooting Instructions
Issue 1 COMPANY CONFIDENTIAL Page 3 –3
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