Motorola U6 Service Manual page 67

Level 1 and 2 Service Manual
Table 3. Level 1 and 2 Troubleshooting Chart (Continued)
SYMPTOM
9. Vibrator feature not functioning.
10. Internal Charger not working.
11. Real Time Clock resetting when
standard battery is removed.
12. No or weak audio when using headset. a) Headset plug not fully pushed into
6809493A67-O
PROBABLE CAUSE
b) Transceiver board assembly
defective.
a) Vibrator assembly defective
b) Transceiver board assembly
defective.
Faulty charger circuit on transceiver
board assembly.
Lithium button cell in the display
board may be depleted.
the jack socket.
b) Faulty jack socket on transceiver
board assembly.
March 06, 2006
VERIFICATION AND REMEDY
Replace the transceiver board assembly (refer
to 1c). Verify that the fault has been cleared and
reassemble with the new transceiver board
assembly.
Temporarily replace the vibrator assembly with
a known good assembly. If fault has been
cleared, reassemble with the new vibrator
assembly. If fault is not cleared, proceed to b.
Replace the transceiver board assembly (refer
to 1c). Verify that the fault has been cleared and
reassemble with the new transceiver board
assembly.
Test a selection of batteries in the rear pocket of
the desktop charger. Check LED display for the
charging indications. If the batteries charge
properly, then the internal charger is at fault.
Replace the transceiver board assembly (refer
to 1c). Verify that the fault has been cleared and
reassemble with the new transceiver board
assembly.
Refer service to a Level 3 service center for
replacement.
Ensure the headset plug is fully seated in the
jack socket. If fault not cleared, proceed to b.
Replace the transceiver board assembly (refer
to 1c). Verify that the fault has been cleared and
reassemble with the new transceiver board
assembly.
Troubleshooting
67