Cellular Phone - Intermittent Malfunctions
GROUP 84
Phone, Navigation Systems
84 07 01
Woodcliff Lake, NJ
Service Engineering
August 2001
SUBJECT
CPT 8000 Phone with TDMA Cingular Handset - Intermittent Malfunctions
MODEL
242
All with CPT8000/TDMA Cingular Digital Phone
SITUATION
Customers may complain of the following, intermittent malfunctions of the phone system:
-- Hands free operation is inoperative
-- Phone does not receive calls
-- Phone ringer does not work
-- Phone drops calls.
CAUSE
TCU software error, causing incorrect processing of the phone message sequence when switching from digital to analog network.
CORRECTION
The improved TCU unit is under development.
In the meantime, on a customer complaint basis only: remove ICU and send by FedEx with a copy of the repair order and return address to:
Product Development, Attn: FA
