Chapter 8 Troubleshooting Tables; Power-Up Error Codes; Operational Error Codes; Table 8-1. Power-Up Error Code Display - Motorola EP450 Basic Service Manual

Chapter 8 Troubleshooting Tables

8.1

Power-Up Error Codes

During radio power-up, the radio performs dynamic tests to determine if the radio is working properly.
Problems detected during these tests are presented as an error code on the radio's display. The
presence of an error code should prompt a user that a problem exists and that a service technician
should be contacted. Use
Error Code
RAM ERR
ROM ERR
EPRM ERR
8.2

Operational Error Codes

During radio operation, the radio performs dynamic tests to determine if the radio is working properly.
Problems detected during these tests are presented as an error code on the radio's display. The
presence of an error code should prompt a user that a problem exists and that a service technician
should be contacted. Use
Error Code
SYN UNLK
More user manuals on
Table 8-1

Table 8-1. Power-Up Error Code Display

Possible Causes
RAM Test Failure
ROM checksum is wrong
EEPROM Hardware Error –
Codeplug structure mismatch
or non-existence of code-
plug or,
EEPROM Checksum Error –
Codeplug checksum is
wrong
Table 8-2

Table 8-2. Operational Error Code Display

Possible Causes
Synthesizer Out-of-Lock
ManualsBase.com
to aid in understanding particular operational error codes.
Retest radio by turning if off and tuning it on again. If
message reoccurs, replace main board or send radio to
depot.
Reprogram FLASH memory and retest. If message reoc-
curs, replace main board or send radio to depot.
Reprogram codeplug with correct codeplug and retest. If
message reoccurs, replace main board or send radio to
depot.
to aid in understanding particular operational error codes.
Verify codeplug and reprogram if necessary. If message
reoccurs, replace main board or send radio to depot.
Corrective Action
Corrective Action