Digital Equipment DECstation 212LP, Service Manual

Page: 29 / 91

2–8 Troubleshooting
Table 2–2 Primary Beep Codes
Beep Code
Possible
Problem
Corrective Action
Two short
beeps Keyboard
failure Be sure the keyboard cable is firmly
connected.
Hard disk
failure Be sure the drive cables are firmly
connected and all drive and adapter
jumpers are set correctly.
Diskette drive
failure Be sure drive cables are firmly
connected and the drive switch is set
correctly.
Tape drive
failure Be sure the drive cables are firmly
connected and all drive and host
adapter jumpers are set correctly.
Invalid
configuration Check the information entered with
the Setup utility.
Configuration
record bad Check the information entered with
the Setup utility. See the hard disk
installation guide for configuration
information. Check the CMOS
battery connection.
Clock chip
lost power Turn the computer off, wait 20
seconds and then turn it on again.
Check the CMOS battery connection.
Long-short-
long-short
beep Video failure Be sure the VGA jumper setting is
enabled on the main logic board.
Several
bursts of
beeps
1
BIOS ROM,
CMOS,
DMA, RAM,
interrupt, or
read/write
errors Check cable connections and jumper
and switch settings. If the problem
persists, there might be a problem
on the main logic board.
1
If the system generates bursts of beeps, refer to Table 2–3 for a list of specific
failure locations corresponding to the particular numeric beep code pattern.