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
42 Unable to find home
position; Path-Clear
sensor blocked Run test 50—Find Home Sequence—verify
failure.
43 Unable to clear Path-
Clear sensors by moving
picker fingers back Run test 50—Find Home Sequence—verify
failure.
44 Carriage motion failure
during Find Home
sequence
Run test 50—Find Home Sequence—verify
failure.
45 Unable to free picker
fingers Run test 50—Find Home Sequence—verify
failure.
46 Carriage motion failed
while initializing Home
position (during Find
Home) Run test 50—Find Home Sequence – verify
failure.
48 - 49 Carriage motion failed
during carriage/picker
assembly calibration Run test 51—Carriage/Picker Assy
Calibration – verify failure.
4A Motion error while
determining orientation
of the picker Run test 50—Find Home Sequence—verify
failure.
4B No sensor found Run test 50—Find Home Sequence – verify
failure.
4C Failed flip motion during
Find Home sequence Run test 50—Find Home Sequence—verify
failure.
4D Motion error checking
for cartridge in the
picker Run test 50—Find Home Sequence—verify
failure.
Check the optical sensor, if necessary.
4E - 4F Unable to measure
height of sensor Run test 51 – Carriage/Picker Assy
Calibration—verify failure.
50 Excessive tilt of the
carriage/picker assembly
(away from the drive) Run test 51—Carriage/Picker Assy
Calibration – verify failure.
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Troubleshooting and Diagnostics 4–25