TM150
ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE
2 – 29
CONFIDENTIAL
DRAFT
[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. SIM card is not recognized.
16. SD (Memory) card is not recognized.
17. USB connection is impossible.
1. POWER IS NOT TURNED ON.
Execute File System Initialization of Downloader in SPST
without loading a file.
Does File System Initialize start properly
Is the user area (file system) initialized by Flash Loader?
5-level stack memory (IC101)
and IC106 are defective.
Does normal mode start?
5-level stack memory (IC101)
data is corrupted.
Is it possible to rewrite the firmware?
5-level stack memory (IC101)
and IC106 are defective.
Does normal mode start after restart?
5-level stack memory (IC101)
and IC106 are defective.
Program code of 5-level stack
memory (IC101) is garbled.
YES
NO
YES
NO
NO
YES
YES
NO
NO
YES
Connect a battery of 4.0 V or more.
Is 3.6 V or more applied to BATT terminal (TP520)?
Battery terminals are defective, connector terminal is dirty, or
soldering is improper.
Is the voltage 1.2 V or lower on SENSE terminal (TP506)?
The battery is defective or set improperly.
Is there conduction through fuse (FS501)?
Fuse (FS501) is blown.
Is 5-level stack memory (IC101) installed properly
5-level stack memory (IC106) is installed improperly.
Is 2.8 V and 1.8 V applied to VMEM (TP170) and VCORE
(TP171) respectively?
IC103 is defective.
Is 3.0 V applied to VINT (TP173)?
IC111 is defective.
Is the waveform of signals from R169 connected to X101 (32
kHz) correct? Are R167, R169, R174A, C176, X101, and
IC106 good in appearance and mounted properly?
X101 (32 kHz oscillator), R167, R169, C174, and C176 are
defective or mounted improperly.
Or oscillating circuit of IC106 is defective.
Is the rectangular wave of 13 MHz properly sent to TP713?
IC106, R179, and R110A are defective or mounted improperly.
CN701 and CN102 are connected improperly.
Is the triangular wave of 13 MHz sent from C833?
C801 is defective.
Is 2.9 V supplied from VTCXO (TP801)?
Power Supply (IC804) is defective.
IC801 and peripheral circuits are defective.
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
NO
YES
Summary of Contents for TM150
Page 61: ...TM150 CIRCUIT DIAGRAM AND PWB LAYOUT 5 13 CONFIDENTIAL DRAFT MAIN PWB_FRONT ...
Page 62: ...TM150 CIRCUIT DIAGRAM AND PWB LAYOUT 5 14 CONFIDENTIAL DRAFT MAIN PWB_REAR ...
Page 63: ...TM150 CIRCUIT DIAGRAM AND PWB LAYOUT 5 15 CONFIDENTIAL DRAFT LCD PWB_FRONT ...
Page 64: ...TM150 CIRCUIT DIAGRAM AND PWB LAYOUT 5 16 CONFIDENTIAL DRAFT LCD PWB_REAR ...