Motorola V3m Service Manual download pdf (Page 58)

58 November 03, 2006 6809501A48-A

Troubleshooting Chart V3m

b) Microphone is defective. Replace the microphone as described in the

procedures. If the fault is not cleared, proceed to

c) Transceiver board is defective Replace the transceiver board as described in

the procedures.

6. Receive audio from earpiece speaker is

weak or distorted.

a) Connections to or from transceiver

board assembly defective.

Gain access to the transceiver board assembly

as described in the procedures. Check flex and

the flex connector from the flip assembly to the

transceiver board assembly. If flex is at fault,

replace flip assembly. If flex connector is at fault,

proceed to d. If connection is not at fault,

proceed to b.

b) Flip assembly defective. Temporarily replace the flip assembly with a

known good assembly. If fault has been cleared,

reassemble with the new flip assembly. If fault

not cleared, proceed to c.

c) Antenna assembly defective. Check to make sure the antenna is installed

correctly. If the antenna is installed correctly,

substitute a known good antenna assembly. If

this does not clear the fault, reinstall the original

antenna assembly and proceed to d.

d) Transceiver board assembly

defective.

Replace the transceiver board assembly (refer

to 1c). Verify that the fault has been cleared and

reassemble with the new transceiver board

assembly.

7. Phone does not sense when flip is

opened or closed (usually indicated by

inability to answer incoming calls by

opening the flip, or inability to make

outgoing calls).

a) Flip assembly defective. Temporarily replace the flip assembly with a

known good assembly. If fault has been cleared,

reassemble with the new flip assembly. If fault

not cleared, proceed to b.

b) Transceiver board assembly

defective.

Replace the transceiver board assembly (refer

to 1c). Verify that the fault has been cleared and

reassemble the unit with the new transceiver

board assembly.

8. Vibrator feature not functioning. Transceiver board assembly defective. Replace the transceiver board assembly (refer

to 1c). Verify that the fault has been cleared and

reassemble the unit with the new transceiver

board assembly.

9. Internal Charger not working. Faulty charger circuit on transceiver

board assembly.

Test a selection of batteries in the rear pocket of

the desktop charger. Check LED display for the

charging indications. If these are charging

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 the unit with the new transceiver

board assembly.

10. Real Time Clock resetting when

standard battery is removed.

Lithium button cell in the display board

may be depleted.

Refer service to a Level 3 service center for

replacement.

Table 2. Level 1 and 2 Troubleshooting Chart (Continued)

SYMPTOM PROBABLE CAUSE VERIFICATION AND REMEDY

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 67 68

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