Troubleshooting - Sharp TQ-GX30E Service Manual

GX30

[3] Troubleshooting

1. Power is not turned on.
2. Voice transmission/recording is impossible.
3. No voice is heard from the earpiece.
4. Battery does not charge.
5. Vibrator does not work.
6. Clock Settings are reset.
7. Speaker does not work.
8. MP3 cannot be played.
9. Video/Voice Recorder playback is impossible.
10. Back Light does not turn on.
11. Out of range and incoming/outgoing calls are impossible.
12. The display does not appear on Main Display.
13. The display does not appear on External Display (in 65K color mode).
14. Pictures cannot be taken.
15. Flash light does not work.
16. SIM card is not recognized.
17. SD (Memory) card is not recognized.
18. IrDA (Infrared) communication is not possible.
19. Bluetooth communication is impossible.
20. USB connection is impossible.
1. Power is not turned on.
Connect a battery of 4.0 V or more.
Execute File System Initialization of Downloader in SPST
without loading a file.
Does File System Initialize start properly?
Downloaded from www.Manualslib.com
NO
A
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Is the user area (file system) initialized by Flash Loader?
YES
Does normal mode start?
Is it possible to rewrite the firmware?
Does normal mode start after restart?
5-level stack memory (IC101)
and IC106 are defective.
2 - 48
YES
5-level stack memory (IC101)
and IC106 are defective.
NO
5-level stack memory (IC101)
data is corrupted.
YES
5-level stack memory (IC101)
and IC106 are defective.
NO
Program code of 5-level stack
memory (IC101) is garbled.
NO
YES
NO
YES