(3)
Inspect installation; install the connectors to Read/Write PCBA.
(4)
To
correctly position
Head
1
and
Head
0,
a
CE
alignment must
be
made. Refer to
Paragraph 6.14 for procedure.
(5)
After a satisfactory
CE
alignment is
made,
return disk drive to original
configuration.
6.23
LAMP/LENS ASSEMBLY REMOVAL AND INSTALLATION
The
Lamp/Lens Assembly is located between the upper pair of recording heads
and
the
positioner
scale,
and
is mounted to the base assembly.
Removal
of the Lamp/Lens
Assembly is occasioned by mechanical damage to the lens or electrical failure
of
the lamp.
6.23.1 LAMP/LENS ASSEMBLY
REMOVAL
(1)
Remove
the Phillips
head
screw anchoring the Lamp/Lens Assembly to the
Sensor Receiver Assembly.
(2)
Remove
tie wraps
as
necessary to free Lamp/Lens Assembly connecting leads.
(3)
Disconnect
J203
from the Servo
PCB
A
and
extract pins
10
and
12
from
J203
with a
Molex pin extractor (Mfg. Part No.
HT2285);
the wires on these pins are connected
to the Lamp/Lens Assembly.
(4)
Remove
the Lamp/Lens Assembly and discard.
6.23.2 LAMP/LENS
ASSEMBLY INSTALLATION
(1)
Align the Lamp Assembly so that locating pins
on
the assembly
fit
Into the
appropriate
holes
on
the Sensor Receiver Assembly.
(2)
Replace the Phillips
head
screw removed
in
Paragraph 6.23.1, Step (1).
(3)
Insert pins
10
and
12,
at
the
end
of
the leads connected to the Lamp/Lens
Assembly, into mating pin holes of
J203
and
reinstall
J203
onto the Servo
PCBA.
(4)
Replace tie wraps removed
in
Paragraph 6.23.1, Step (2).
(5)
Perform the pOSitioner servo calibration procedures in Paragraphs 6.8
and
6.9.
6.24
RETICLE
REMOVAL AND INSTALLATION
Reticle removal is occasioned by mechanical damage to the component.
The
reticle is
an
integral part of the Sensor Receiver Assembly and is located immediately below the
positioner scale,
vertically in line with the Lamp/Lens Assembly. If the reticle is damaged,
the entire
Sensor Receiver Assembly (Part No.
104500-01
for
100
tpl, Part No.
104500-02
for
200
tpi) must
be
replaced.
6.24.1
RETICLE
REMOVAL
(1)
Remove
the Lamp/Lens Assembly according to the procedure in Paragraph
6.13.1,
Steps
(1)
and (2).
(2)
Loosen the hexagonal
head
screw on the thermal compensation block; this will
loosen the receiver post so that it
can
be
rotated.
(3)
Rotate receiver post clockwise to ensure that reticle is clear of Scale Assembly.
CAUTION
WHEN
ROTA
TlNG
THE
RECEIVER
POST,
ENSURE
THA
T
RETICLE
DOES
NOT
CONTACT ANY
PART
OF
SCALE
ASSEMBLY.
(4)
Remove
tie wraps from wires connecting reticle
and
J203
on
the Servo
PCBA.
(5)
Disconnect
J203
from the
Servo
PCBA. Extract leads
1-5,
9,
10,
and
12
with their
pins from
J203
using a Molex pin extractor (Mfg. Part No.
HT2285).
(6)
Remove
the Sensor Receiver Assembly.
R..R7
6300
To Next Page
Loading...