5-3
5
TABLE 5-1 SELF TEST ERROR CODES
Blinking
LED
Error
Possible Fault
All
Flash
Flash Memory corrupted and unit reset Flash
Memory
to factory settings. Power unit off and back
on to clear the blinking LEDs.
See Table 5-2 if the ERR LED comes on
when power is reapplied.
Loose Flash or bent pin U22.
Defective Flash that cannot be reprogrammed.
Replace U22.
Defective decoder GAL. Test and/or replace
GAL U15.
RDY
Flash
Flash failed write test. Replace Flash, U22,
and reprogram configuration. See the
DEFAULT command.
TALK
Flash
Flash loose in its socket or has a bent pin.
Check Flash chip for a bent pin then press
Flash chip into its socket.
Flash Memory dropped a bit.
Replace with a known good Flash. When the
Flash Memory is replaced, the
configuration will have to be reprogrammed.
See the DEFAULT command.
Defective decoder GAL. Test and/or replace
GAL U15.
LSTN
RAM
Defective decoder GAL. Test and/or replace
GAL U15.
Defective RAM. Replace RAM, U13