Z Failed To Home; No Drivebay Found; No Carriage Found; No Sensor Pcb Found - Qualstar RLS-4470 Technical & Service Manual

that there is not a loose cartridge in the Handler (if a cartridge is in the Handler, and
it is properly gripped, this will not cause a problem.) A failed infrared emitter or de-
tector could also be responsible. A large piece of dust or an errant barcode label could
also cause this failure.

6.2.9 Z Failed to Home

During POST (Power On Self Test) the RLS did not detect that the Handler's Z-Axis
(insertion) successfully found its home position. Check that there are no loose maga-
zines or cartridges in the library. Check that the drives are properly seated and the
locking lever is fastened. Check that there is not a loose cartridge in the Handler (if a
cartridge is in the Handler, and it is properly gripped, this will not cause a problem.)
A failed infrared emitter or detector could also be responsible. A large piece of dust or
an errant barcode label could also cause this failure.

6.2.10 No Drivebay Found

During POST (Power On Self Test) the Executive microprocessor could not communi-
cate with Drive Bay microprocessor. Check that the 10-conductor ribbon cable be-
tween the Interconnect and Drive Bay PCBAs is properly installed. Go to the
vate\Cabling

6.2.11 No Carriage Found

During POST (Power On Self Test) the Executive microprocessor could not detect the
presence of the Carriage Assembly. Check the 50-conductor cables between the Exec-
utive, Interconnect, and 2-Axis Carriage PCBAs. Go to the
menu to see if any cables are unplugged.

6.2.12 No Sensor Pcb Found

During POST (Power On Self Test) the Executive microprocessor could not detect the
presence of the Sensor Master PCBA. Check the cable from the Interconnect PCBA to
the Sensor Master PCBA. Go to the
are unplugged.

6.2.13 No Carousel Found

During POST (Power On Self Test the Executive microprocessor could not detect the
presence of the Carousel PCBA or could not communicate with its microprocessor.
Check the cable between the Drive Bay and the Carousel PCBAs. Go to the
vate\Cabling

6.2.14 No Storage Array

During POST (Power On Self Test) the Executive microprocessor could not detect the
presence of the Storage Array or could not communicate with its microprocessor.
6-4
menu to see if any cables are unplugged.
Private\Cabling
menu to see if any cables are unplugged.
Troubleshooting
Pri-
Private\Cabling
menu to see if any cables
Pri-
501510 Rev. S