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B.
Remove four screws (item 84) which attach PWB and remove PWB.
C.
Note orientation of optical device connectors, top and bottom,
and remove them.
D.
Remove front bezel (see paragraph 5.6.1).
E.
Remove carrier frame assembly (see paragraph 5.6.7).
F.
Remove two screws (item 74) which attach diskette guide (item 9 or
14) and remove diskette guide.
G.
Reinstall by reversing steps A-E. Use alignment tool, PIN 650160-T115
to position diskette guide when attaching it to main frame.
5.6.9
II\IDEX SENSOR ASSEIVlBL Y
To remove and reinstall index sensor assembly, use the following procedure:
A.
Remove head cable connector, four screws (item 84) which
attach PWB and fold back main PWB (about 120°).
B.
Note orientation of connector on index sensor assembly and
remove it.
C.
From bottom of disk drive, remove screw and washer (items 34
&
78)
that attach sensor block (item 37) to main frame. Remove sensor block
from top of disk drive.
D.
To remove photo transistor (item 43) from sensor block, carefully
remove bonding agent from around photo transistor using an X-acto knife or
similar tool.
E.
To replace photo transistor, insert into sensor block with flat on photo
transistor flange seated into "0" hole and bond in place using
a high strength, flexible adhesive. Carefully bend leads over
(about 90°).
F.
Reinstall index sensor assembly by reversing steps A-C. Ensure that
mounting surface is smooth and sensor block is seated into main frame.
G.
Adjust and set index timing (see paragraph 5.8.5).
5.6.10
INDEX LED
To remove and reinstall the index LED, use the following procedure:
A.
Remove head cable connector, four screws (item 84) which attach
PWB and fold back main PWB (about 120°).
5-8
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