Programming: Software Upgrade And Flexing - Motorola B89 Service Manual

Troubleshooting
Table 3. PF A28 Telephone: Level 1 and 2 Troubleshooting Chart (Continued)
SYMPTOM
11. Real Time Clock resetting when
standard battery is removed.
12. No or weak audio when using headset. a) Headset not fully pushed home.

Programming: Software Upgrade and Flexing

44
PROBABLE CAUSE
Lithium button cell in the display board
may be depleted.
b) Faulty jack socket on transceiver
board assembly.
Contact your local technical support engineer for information about equipment and
procedures for flashing and flexing.
May 15, 2001
Product Family B89
VERIFICATION AND REMEDY
Replace the RTC battery as described in the
procedures. Check RTC time does not reset.
Ensure the headset plug is fully seated in the
jack socket.
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.
6881038B20