Digital Equipment RW504-ZA, Service Manual

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3. Initialize the picker fingers by pulling the fingers back to a hard stop and
calibrate flip mechanism. (MMID# 4D, 4F, 7, 8)
a. Possible error:
45–Unable to free the picker fingers.
4. Initialize the carriage/picker position by moving it toward the drive-end of the
until it hits a hard stop. (MMID# 47, 48)
a. Possible error:
46–Carriage motion failed while initializing Home position during Find
Home sequence.
5. Determine if the library is in the tower or the rackmount configuration.
(MMID# 1, 2, 50, 51)
a. Possible error:
41–Carriage motion failed during carriage/picker assembly calibration.
6. Determine if there is a cartridge in the picker by plunging the fingers against
a hard stop (MMID# 2, 52, 5)
a. Possible error #1:
4D–Motion error while checking for cartridge in picker.
b. Possible error #2:
65–Intermittent path-clear sensor beam.
7. Find orientation of the picker (MMID# 1,2, 53, 54, 7, 8)
a. Possible error #1:
4A–Motion error while determining the orientation of the picker.
b. Possible error #2:
4C–Failed flip motion during the Find Home sequence
c. Possible error #3:
60–Optical sensor failed
8. Calibrate the end of the picker with respect to the sensor (Do twice on each
side of the picker, to be sure) (MMID# 1, 2, 53, 54, 7, 8)
a. Possible error #1:
49–Carriage motion failed during carriage/picker calibration.
b. Possible error #2:
4C–Failed flip motion during the Find Home sequence
4–42 Troubleshooting and Diagnostics