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2.2.0 MAINTENANCE
The maintenance philosophy for the disk drive is:
1.
2.
3.
No preventive maintenance.
Repairs are made by adjustment or replace-
ment of field replaceable units (FRUs).
Fault diagnosis to FRUs is done by diagnos-
tic programs and MAPs.
4.
Repair is verified by rerunning the diagnostic
programs.
CAUTION
Do not turn the spindle unless specifically told
to do so. Head damage could occur.
2.2.1 Card Sockets
CAUTION
Take extreme care not to bend or break the pins
when removing or inserting cards. Bent or broken
pins make it necessary to replace the entire disk
enclosure.
The card sockets are located on the front right
of the disk enclosure. To remove or replace
cards, remove the card socket cover
m
by
pressing down at
III
and gently pulling out.
m
2-10
The disk enclosure card sockets are arranged as
follows:
A
B
Speed Trans-
Servo
ducer, Brake
Preamp
1
Sense, and
Cable
Actuator
(coaxial)
Drive Coil
Cable
2
3
Read
Preamp
and Write
Select
Card
4
R/W
5
Logic
Data
Cable
AGC
(tape)
and
Detector
RIW
Card
Data
6
Cable
(coaxial)
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