IBM 770 Hardware Manual
RUNNING THE DIAGNOSTICS
FRU Codes:
If an error is detected by the diagnostic
tests, a four-digit FRU code is displayed. The FRU code
indicates two suspected FRUs. Replace the FRU that is
indicated by the
indicates two suspected FRUs. Replace the FRU that is
indicated by the
two leftmost digits first; then replace the
FRU that indicated by the
two rightmost digits. No FRU
Icon
Device ID
Suspected Device
SystemBoard
001
System board
003
Keyboard
007
Math coprocessor
086
Pointing device
Memory
002
Memory
FDD-1
006
Diskette drive in the
computer
computer
FDD-2
066
External diskette drive
or FDD connector
or FDD connector
Parallel
009
Parallel port
Serial
011
Serial port
HDD-1
017
Hard disk drive
HDD-2
151
First (external) hard disk
drive
drive
HDD-3
067
Second (external) hard
disk drive
disk drive
HDD-4
152
Third (external) hard disk
drive
drive
Display
050
Display
052
053
054
PCMCIA-1
080
1. Connection of the
PC Card slot
2. PC Card
PCMCIA-2
088
External PC Card
Infrared
103
IR
DPS
113
DPS
Audio (ISA)
153
ISA audio
USB-1
154
USB
USB-2
155
External USB
USB-3
156
External USB
USB-4
157
External USB
Audio (PCI)
158
PCI audio
CDROM-1
215
CD-ROM
CDROM-2
216
External CD-ROM
DVD-1
217
DVD drive
DVD-2
218
External DVD drive
44