Diagnostic LED Codes,
Continued
DSW21
Communications
Device LED
Codes
Table B–12 DSW21 Communication Device LED Codes (1100
XXXX)
LED Depiction
Code
Description
FRU
1100 0000
C0h
Comm option
code entered
DSW21, System
module
1100 0001
C1h
Comm option
ROM test has
failed
DSW21, System
module
1100 0010
C2h
Comm option
RAM test has
failed
DSW21, System
module
1100 0011
C3h
Comm option
self-test has
failed
DSW21, System
module
1100 0100
C4h
Comm option
Dual RAM
access test has
failed
DSW21, System
module
1100 0101
C5h
Comm option
Dual ROM_
RAM access
test has failed
DSW21, System
module
1100 0110
C6h
Comm option
Interrupt test
has failed
DSW21, System
module
1100 0111
C7h
Comm option
Integrated
loopback test
has failed
DSW21, System
module
1100 1000
C8h
Comm option
Reset test has
failed
DSW21, System
module
Continued on next page
B–13