Table of Contents
Advertisement
16. SD (MEMORY) CARD IS NOT RECOGNIZED.
Is the SD card checked for operation?
Is the SD card recognized on PC, etc.?
Is the card insertion detected?
Is 2.75 V or more applied to VAPP?
Can the SD card be formatted?
After formatting, can the SD card be used?
File system on the SD card is damaged.
17. USB CONNECTION IS IMPOSSIBLE.
Connect a properly working handset to the Data/USB cable
that is not recognized. Is it recognized?
Is a communication with the handset established via SPST for
TM150?
Connect to a Data with the USB cable.
Is TP536 at "H"?
Is 5 V or more applied to TP515?
Is Q503 pin 3 at "L"?
Is 3 V or more applied to TP166?
IC106 and IC502 are defective.
CONFIDENTIAL
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
TM150 ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE
DRAFT
NO
Use an SD card that has been checked.
NO
Is SD/SIM FPC properly inserted to CN104?
YES
Does the signal of SD_DET become "L" when the card is
inserted?
YES
IC106 is defective.
NO
IC103 or Q103 is defective.
SD card socket and CN104 are in poor contact. SD_CLK,
NO
SD_CMD, and SD_DAT [3:0] on PWB are broken or short-cir-
cuited. IC106 is defective or has come off.
NO
IC106 is defective or has come off.
Reinstall the driver and replace the USB cable to connect the
NO
handset.
NO
IC106, IC502, and IC504 are defective.
The signal line from CN502 pin 8 to IC106 pin 90 is short-cir-
NO
cuited with GND. Or R566 is has come off.
NO
CN502 is connected improperly.
NO
Q503 is defective.
NO
IC103 or IC106 is defective.
2 – 41
NO
Reinsert SD/SIM FPC, and
try again.
NO
SD card socket and CN104
are in poor contact. Hardwir-
ing on PWB is broken.
Advertisement
Table of Contents
