5-1
Chapter 5
Power Up Self-Test
5.1 Error Codes - Conventional Radios
Turning on the radio starts a self-test routine that checks the RAM, ROM checksum, EEPROM
hardware, and EEPROM checksum. If these 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.
Table 5-1: Power Up Error Codes
If the error code
displayed is...
then, there is a... To correct the problem...
“RAM TST ERROR” RAM test failure. Retest the radio by turning it off and turning it on
again. If message reoccurs, replace RAM (U0122).
“EEPRM HW ERROR” Codeplug structure mis-
match or non existence
of
codeplug.
Reprogram codeplug with correct version and retest
radio. If message reoccurs, replace EEPROM
(U0111).
“EEPRM CS ERROR” Wrong codeplug check-
sum.
Reprogram codeplug.
No Display Bad display module
connection or damaged
display module.
Check connection between main board and display
module or replace with new display module.
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