Digital Equipment RW504-ZA, Service Manual

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Table 4–3 (Cont.) Recovery Procedures for Specific Hardware Errors
Error Code
(hex.)
Error Recovery Procedures
Check for loose labels or other
obstructions in errors B3 and B4.
Also, make sure that the storage slots
are not skewed.
B3 Storage slot will not
accept or release
cartridge Run test 15—Storage Slot Test—verify
failure.
B4 Outside mailslot sensor
failed Run test 43 – Mailslot Sensor Test—verify
failure.
DRIVE ERRORS
The autochanger only checks for
the PRESENCE of a drive. To run
complete drive tests requires an
external diagnostic.
On drive error codes, check all cabling to
/from the drive for
No broken wires
No worn cables
No loose connections
Check the drive tray.
B8 Drive access error Run test 16—Drive I/O Test – verify failure.
Access the drive logs. Drive logs are
available only through the SCSI interface.
Call CSC.
DRIVE EJECT ERRORS
BC Drive access failure Run test 16—Drive I/O Test – verify failure.
Access the drive logs. Drive logs are
available only through the SCSI interface.
Call CSC.
FRU DETECTION TEST ERRORS
Check carriage/picker for free motion.
The carriage should travel easily along
the rail; you should be able to easily
flip the picker using the picker belt.
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4–28 Troubleshooting and Diagnostics