Troubleshooting Chart - Motorola T193 Service Manual

Level III Service Manual
Table 2. Test Commands (Continued)
Test Command
52#
54#
57#
58#
58xxxxxx#
59#
59xxx#
60#
980#
981#
962#
99#

Troubleshooting Chart

Table 3. PF B95 and C21 Telephone: Level II Troubleshooting Chart
SYMPTOM
1. Telephone will not turn on or stay on.
2. Telephone exhibits poor reception or
erratic operation such as calls frequently
dropping or weak or distorted audio.
3. Display is erratic, or provides partial or
no display.
6881038B70
Disable sidetone
Show service indicator LED (0 - Off, 1 - Red, 2 - Green, 3 - Amber) (flip must be closed)
Initialize non-volatile memory
Display security code
Modify security code
Display lock code
Modify lock code
Display IMEI
DCS Mode (PF B95 only)
GSM Mode (PF B95 only)
PCS Mode (PF C21 only)
Display all pixels
PROBABLE CAUSE
a) Battery either discharged or
defective.
b) Battery terminals open or
misaligned.
c) Transceiver board assembly
defective.
Transceiver board assembly defective. Replace the transceiver board assembly (refer
a) Mating connections to or from
transceiver board faulty.
b) Transceiver board assembly
defective.
Test Function/Name
Measure battery voltage across a 50 ohm (>1
Watt) load. If the battery voltage is <3.25 Vdc,
recharge the battery using the appropriate
battery charger. If the battery will not recharge,
replace the battery. If battery is not at fault,
proceed to b.
Visually inspect the battery terminals on both
the battery and the telephone. Realign and, if
necessary, either replace the battery or refer to
a Level 3 Service Center for the battery
connector replacement. If battery terminals are
not at fault, proceed to c.
Remove the transceiver board assembly.
Substitute a known good assembly and
temporarily reassemble the unit. Depress the
PWR button; if unit turns on and stays on,
disconnect the dc power source and reassemble
the telephone with the new transceiver board
assembly. Verify that the fault has been cleared.
to 1c). Verify that the fault has been cleared and
reassemble the unit with the new transceiver
board assembly.
Check general condition of flex and flex
connector if the flex and connector are good,
check that the connector locking tabs are fully
engaged. If faulty connector, replace the
transceiver board assembly. If connector is not
at fault, proceed to b.
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.
July 27, 2001
Troubleshooting
VERIFICATION AND REMEDY
31