Table of Contents
Digital DECpc LP
4
MCS Logistics Engineering - Nijmegen
REMOVAL PROCEDURES...............................................................................................................................34
Removing a 5¼-Inch FDD .............................................................................................................................34
Removing a 3½-Inch FDD .............................................................................................................................35
Removing the HDD Mounting Tray..............................................................................................................36
Removing the Main Logic Board ..................................................................................................................36
Main Logic Board Connections .....................................................................................................................37
Removing the Power Supply .........................................................................................................................38
I
NSTALLATION
P
ROCEDURES
.............................................................................................................................39
Installing the Bus Expansion Board ..............................................................................................................39
R
EPLACEMENT
P
ROCEDURES
.............................................................................................................................40
Replacing the Computer Battery....................................................................................................................40
C
ONNECTING
O
PTIONAL
M
ASS
S
TORAGE
D
EVICES
.........................................................................................41
Diskette Drive Cabling Scheme.....................................................................................................................41
CHAPTER 4 TROUBLESHOOTING..........................................................................................................43
I
NITIAL
T
ROUBLESHOOTING
...............................................................................................................................43
B
EEP
C
ODES
.........................................................................................................................................................44
Beep Codes for Fatal Errors ...........................................................................................................................44
Beep Codes for Non-Fatal Errors ..................................................................................................................45
POST
AND
B
OOT
M
ESSAGES
..............................................................................................................................45
C
OMPUTER
T
ROUBLESHOOTING
........................................................................................................................47
D
ISK
D
RIVE
T
ROUBLESHOOTING
.......................................................................................................................49
M
ONITOR
T
ROUBLESHOOTING
...........................................................................................................................50
QAPlus/FE Error Messages ...........................................................................................................................51
CHAPTER 5 DEVICE MAPPING................................................................................................................53
Computer Memory Map.................................................................................................................................53
I/O Address Map.............................................................................................................................................54
Computer Interrupt Levels .............................................................................................................................55
DMA Channel Assignment ............................................................................................................................55
CHAPTER 6 PASS / FAIL CRITERIA........................................................................................................57
APPENDIX A SERVICE NOTES .................................................................................................................59
APPENDIX B USEFUL INFORMATION...................................................................................................61
R
ELATED
D
OCUMENTATION
...............................................................................................................................61
O
N
-L
INE
B
ULLETIN
B
OARDS
..............................................................................................................................61
DOCUMENT FEEDBACK ..............................................................................................................................63
PERSONAL NOTES .........................................................................................................................................65
READERS COMMENTS....................................................................................................................................69
