Power Up Self-Test; Error Codes - Motorola GM338 Service Manual

Section 5

POWER UP SELF-TEST

1.0

Error Codes

Turning on the radio starts a self-test routine that checks the radio functionality. If the checks are
successful, the radio generates two high-pitched self-test pass tones, or a musical tone (selected in
CPS). If the self-test is not successful, one low-pitched tone is heard. Radios with displays are able
to display the error codes. The displayed error codes and related corrections are listed in Table 5-1.
A radio without a display emits only the 300Hz tone if it fails the test.
NOTE
If the error code
displayed is...
"RAM Test"
"EEPRM HW
ERROR"
"EEPRM CS
ERROR"
No Display
300Hz Tone
(Radio Without Dis-
play)
Table 5-1 Power Up Error Codes
then, there is a...
RAM test failure
Codeplug structure mismatch or
non existence of codeplug.
Wrong codeplug checksum.
Display module is not connected.
Display module faulty.
Radio failure or invalid codeplug as
described above.
To correct the problem...
Turn radio off-on.
If message reoccurs replace main board or
return it to the nearest Motorola depot.
Reprogram codeplug with correct version
and retest radio.
If message reoccurs, replace main board or
return to the nearest Motorola depot.
Reprogram the codeplug and retest the
radio.
Check connection between main board and
the display module.
Replace display module.
Turn radio off then on again.
Confirm that there is a 300Hz fail tone. Make
the relevant correction as described above.
5-1