40
May 14, 2001
6881038B15
Troubleshooting P280
c) 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.
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
connection from the earpiece to the transceiver
board assembly. If connection is not at fault,
proceed to b.
b) Earpiece speaker defective.
Remove the transceiver board and insert into
known good speaker. Ensure good connection.
Place a call and verify improvement in earpiece
audio. If fault is cleared, reassemble the phone
with the good speaker. If fault is 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. Telephone will not recognize or accept
SIM card.
a) SIM card defective.
Check the SIM card contacts for dirt. Clean if
necessary, and check if fault has been cleared.
If the contacts are clean, insert a known good
SIM card into the telephone. Power up the unit
and confirm that the card has been accepted. If
the fault no longer exists, replace the defective
SIM card. If the SIM card is not at fault, 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.
a) 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.
a) 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.
a) RTC battery in the transceiver
board.
Replace RTC battery according to the
procedures.
11. No or weak audio when using headset. a) Headset not fully pushed home.
Ensure the headset plug is fully seated in the
jack socket.
b) Faulty jack socket on transceiver
board assembly.
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.
Table 3. PF B58 Telephone: Level 1 and 2 Troubleshooting Chart (Continued)
SYMPTOM
PROBABLE CAUSE
VERIFICATION AND REMEDY
Содержание TIMEPORT 280
Страница 2: ......
Страница 50: ...46 May 14 2001 6881038B15 Part Number Charts P280 ...
Страница 57: ...P280 BOARD LAYOUT PAGE 1 2 ...
Страница 58: ...P280 BOARD LAYOUT PAGE 2 2 ...
Страница 62: ......
Страница 64: ......