Digital Equipment RW504-ZA, Service Manual

Page: 79 / 220

Table 4–3 Recovery Procedures for Specific Hardware Errors
Error Code
(hex.)
Error Recovery Procedures
00 No error No action.
AUTOCHANGER CONTROLLER PCA ERRORS
The first step is to make sure all cables
are fully inserted into the connectors
on the controller pca.
01 ROM Checksum Error Run test 31—ROM Checksum Test – verify
failure.
03 RAM Test Error Run test 33—RAM Test—verify failure.
04 Microprocessor Test
Error Run test 30 – Microprocessor Operation
Test—verify failure.
05 Controlled Area of RAM
Checksum Error Recycle Power—verify failure.
If error repeats –
Run configuration 16—resets default
values. Recycle power.
If error repeats –
Clear NVRAM by switching off power and
setting switch 1 on the 8-switch rocker
switch located on the controller PCA to the
‘‘closed’’ position and switching the power
back on. Clearing NVRAM sets the security
code back to the default (0-0-0).
If error repeats –
Replace autochanger controller PCA (FRU
01). Power-on—check fix.
06 Illegal interrupt seen by
microprocessor Same as for error code 05
07 Illegal CPU exception
seen by microprocessor Same as for error code 05
09 Firmware Error Run test 3—Controller Test—(may not be
able to duplicate).
SCSI INTERFACE-SPECIFIC ERRORS
Visual inspection is not possible for
errors 0B to 13.
0B SCSI Controller Register
Error Run test 34—SCSI Interface Controller
Chip Test—verify failure.
(continued on next page)
Troubleshooting and Diagnostics 4–21