Sharp GX15, Service Manual

Page: 52 / 122

GX15
2 – 44
CONFIDENTIAL
[3] Troubleshooting
1. Power dose not turn on.
1. Power dose not turn on. See page 2-44
2. Voice transmission/recording is impossible. See page 2-46
3. No voice is heard from the earpiece. See page 2-48
4. Battery does not charge. See page 2-49
5. Vibrator does not work. See page 2-49
6. Clock Settings are reset. See page 2-50
7. Earpiece (for loud speaker) does not work. See page 2-50
8. Video/Voice Recorder playback is impossible. See page 2-51
9. Back Light does not turn on. See page 2-52
10. Out of range and incoming/outgoing calls are impossible. See page 2-53
11. The display does not appear on Display. See page 2-54
12. Pictures cannot be taken. See page 2-55
13. SIM card is not recognised. See page 2-56
14. IrDA (Infrared) communication is impossible. See page 2-57
15. Bluetooth communication is impossible. See page 2-58
16. USB connection is impossible. See page 2-58
Connect a battery of 4.0 V or more.
Execute File System initialisation of Downloader in SPST
without loading a file.
Does File System initialisation start properly? Is the user area (file system) initialised by Flash Loader?
Flash memory (IC104) and
IC106 are defective.
Does normal mode start?
Flash memory (IC104) data is
corrupted.
Is it possible to rewrite the firmware?
Flash memory (IC104) and
IC106 are defective.
Does normal mode start after restart?
Flash memory (IC104) and
IC106 are defective. Programme code of Flash
memory (IC104) is garbled.
(To page 2-45)
YES
NO
A
YES
NO
NO
YES
YES
NO
NO YES