
6881038B20
May 15, 2001
43
Level III Service Manual Troubleshooting
e) 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) Connections between display
board and transceiver board
assembly faulty.
Refer to remedy 3a and 3b. If fault has not been
cleared, proceed to c.
c) Display board defective.
Replace display board with a known good one.
Temporarily reassemble unit and verify proper
operation. If fault has not been cleared, replace
original display board 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 the unit with the new transceiver
board assembly.
8. 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) Magnet in lens assembly missing
or defective.
Replace lens assembly with known good one.
Refer to the procedures. Place call to phone and
verify ability to answer by opening flip. If fault is
cleared, rebuild phone with new lens assembly.
If fault is still present, replace original lens
assembly and proceed to b.
b) Reed switch on transceiver board
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. Vibrator feature not functioning.
a) Vibrator in flip assembly defective. Replace display board with a known good one.
Temporarily reassemble unit and verify proper
operation. If fault has not been cleared, replace
original display board and proceed to b.
b) Connections between display
board and transceiver board
assembly faulty.
Refer to remedy 3a and 3b. If fault has not been
cleared, proceed to c.
c) Display board defective.
Replace display board with a known good one.
Temporarily reassemble unit and verify proper
operation. If fault has not been cleared, replace
original display board 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 the unit with the new transceiver
board assembly.
10. 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.
Table 3. PF A28 Telephone: Level 1 and 2 Troubleshooting Chart (Continued)
SYMPTOM
PROBABLE CAUSE
VERIFICATION AND REMEDY
Содержание B89
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Страница 65: ...A B C D E F G H I J K L M N 1 2 3 4 5 6 7 8 9 10 11 V 66 FRONT HOUSING SCHEMATIC ...
Страница 66: ...V66 FLIP SCHEMATIC ...