Troubleshooting
2–7
1.
Determine what the failure is. Refer to Section 2.5 for a list of
possible error messages. If there are no error messages refer
to Section 2.6 for a list of symptoms and possible causes.
2.
Run the Diagnose diagnostics.
3.
Replace the necessary FRU.
2.5 Error Codes and Messages
During the power-up sequence, the DECstation executes built-in
diagnostic and bootstrap routines. During the first portion of
power up testing, the system generates beep codes on the speaker
if the test program detects a fatal error. The system uses the
beep codes to report test results only until screen initialization
and screen retrace verification have occurred. After screen
initialization and verification the built-in diagnostic sends non-
fatal error messages to video memory and the system displays the
messages on the monitor.
CAUTION
Do not connect or disconnect the video cable from the
monitor or system when the monitor and/or system is
on. This can cause damage to the system. Always turn
the monitor and system off, then wait 20 seconds and
disconnect the power cord before you remove the system
unit cover. Observe anti-static precautions.
2.5.1 Power Up Beep Codes
During the power up self test, the system generates two levels of
beep codes. The primary level consists of a combination of long
and short beeps which indicate possible system malfunction
conditions. The secondary level utilizes bursts of beeps in
a numeric beep code pattern to indicate specific malfunction
locations on the main logic board.
Table 2–2 lists the primary beep codes. The primary beep codes
indicate a main logic board failure, memory failure, memory
configuration error, or a video error. If a memory failure is
indicated, check and reseat the single-in-line memory modules
(SIMMs) on the 0K Memory Adapter. If you suspect a bad SIMM,
first replace one SIMM and then the other.
Содержание DECstation 212LP
Страница 1: ...DECstation 212LP 316SX 320SX Service Guide Order Number EK PC44A SV 002 Digital Equipment Corporation...
Страница 49: ...3 6 FRU Replacement New Illustration LJ 1711 Figure 3 1 Exploded View of DECstation Chassis...
Страница 54: ...FRU Replacement 3 11 New Illustration LJ 1708 Figure 3 4 Opening the DECstation System Unit...
Страница 57: ...3 14 FRU Replacement New Illustration LJ 1707 Figure 3 5 Removing the Bus Adapter Board...
Страница 59: ...3 16 FRU Replacement New Illustration LJ 1706 Figure 3 6 Removing the DECstation 212LP Battery...
Страница 63: ...3 20 FRU Replacement Insert version LJ 1703 Figure 3 9 Removing and Replacing the 212LP SIMM...
Страница 64: ...FRU Replacement 3 21 Insert version LJ 1784 Figure 3 10 Removing and Replacing the 316SX 320SX SIMM...
Страница 66: ...FRU Replacement 3 23 Insert version LJ 1701 Figure 3 11 Replacing the 212LP Math Coprocessor...
Страница 67: ...3 24 FRU Replacement New Illustration LJ 1700 Figure 3 12 Replacing the 316SX Math Coprocessor...
Страница 68: ...FRU Replacement 3 25 New Illustration LJ 1785 Figure 3 13 320SX Math Coprocessor Replacement...
Страница 71: ...3 28 FRU Replacement New Illustration LJ 1698 Figure 3 15 Removing the 316SX Main Logic Board...
Страница 72: ...FRU Replacement 3 29 New Illustration LJ 1786 Figure 3 16 Removing the 320SX Main Logic Board...
Страница 74: ...FRU Replacement 3 31 New Illustration LJ 1697 Figure 3 17 Replacing the Floppy Disk Drive...
Страница 76: ...FRU Replacement 3 33 New Illustration LJ 1696 Figure 3 18 Removing the DECstation Power Supply...
Страница 91: ......
