Digital Equipment RW504-ZA, Service Manual

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5.3 Tools Required
The following tools are needed for assembly/disassembly of the autochanger:
• Torx® driver with the following bits: T-10, T-15, T-25
• Dags
• Needle-nosed pliers
• Pozidriv® magnetized screwdriver
• Flatblade screwdriver
5.4 Assembly/Disassembly Procedures
WARNING
Be sure to disconnect the power cord before taking the disk library apart
to prevent possible electrical shock.
CAUTION
Do not switch off power to the disk library until you are sure the SCSI
bus is inactive. Switching off the disk library when the SCSI bus is active
can cause data loss and/or indeterminate bus states.
Use caution when servicing the optical disk library to insure that disk
cartridges are not moved from their original slot locations. If you need to
remove the cartridges, record their slot locations and orientation so they
can be replaced to their original positions. Failure to follow this practice
will result in a serious loss of file system integrity.
5.4.1 Service Access
WARNING
DO NOT disassemble the drive mechanism.
The optical drive mechanism becomes a Class 3B laser device when
disassembled. If the drive is disassembled, exposure to the invisible laser
beam and hazardous invisible laser radiation could result in blindness.
5–2 Removal and Replacement