TM200
1ADJUSTMENTS, PERFORMANCE CHECK, AND FIRMWARE UPGRADE
2 – 41
CONFIDENTIAL
18. USB CONNECTION IS IMPOSSIBLE.
19. BLUETOOTH COMMUNICATION IS IMPOSSIBLE.
Connect a properly working handset to the Data/USB cable
that is not recognized. Is it recognized?
Reinstall the driver and replace the USB cable to connect the
handset.
Is a communication with the handset established via SPST for
TM200?
IC106, IC701, and FL701 are defective.
Connect to a Data with the USB cable.
Is TP536 at “H”?
The signal line from CN502 pin 8 to IC106 pin 90 is
short-circuited with GND. Or R751 is has come off.
Is 5 V or more applied to TP515?
CN502 is connected improperly.
Is Q503 pin 3 at “L”?
Q503 is defective.
Is 3 V or more applied to TP166?
IC103 or IC106 is defective.
IC106 and IC701 are defective.
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
A connection cannot be established via Bluetooth.
Is 3 V supplied from IC505 pin 5?
IC505 is defective.
Is R514 (RESET signal side) always at “H”?
IC106 is defective.
Is waveform periodically sent from R516 (UARTTX signal side) ?
IC506 is defective.
Is waveform periodically sent from R547 (UARTRX signal side) ?
IC506 is defective.
Handset can be connected to Bluetooth headset, but sound is
not heard.
Is waveform of PCMCLK signal (approx. 256 kHz clock) sent
from R188?
Is waveform of 8 kHz periodically sent from R550 (PCMSYNC
signal side)?
IC506 is defective.
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
YES
IC106 is defective.
IC106 is defective.
IC106 is defective.
IC506 is defective.
IC106 is defective.
Is waveform periodically sent from R515 (PCMOUT signalside)?
Is waveform of PCMIN signal periodically sent from TP508?