6300
6.13.1.3 Adjustment Procedure
(1)
Note the average temperature calculated in 6.13.1.2, Step
(2).
(2)
Move the
DVM
positive probe to
TP3;
maintain the
DVM
ground lead
on
TP5.
(3)
Adjust
R15
to attain a voltage that corresponds to the average temperature used in
Step
(1).
See
Figure
6-22.
(4)
Perform the Scaling Resistor Verification procedure detailed in Paragraph
6.13.2.
6.13.2 SCALING
RESISTOR
VERIFICATION
(1)
Establish the test configuration described in Paragraph 6.13.1.1, except connect
the
DVM
positive test lead to
TP2.
(2)
Adjust
R16
to +
1.0v.
(3)
Move the
DVM
positive probe to
TP4.
(4)
Using the disk exerciser, refer to Table
6-7
and check that the voltage at
TP4
is
within the range specified for each
of
the cylinder addresses listed.
NOTE
If
the voltages
on
TP4
are not within limits for each
cylinder address in
Step (4), there may be a component
failure in the scaling resistor and/or the cylinder address
Circuitry.
(5)
Perform the Environmental Temperature Adjustmenfdetailed in Paragraph 6.13.3.
6.13.3
ENVIRONMENT TEMPERATURE ADJUSTMENT
NOTE'
Location
of
the heads is not relevant to this adjustment.
(1)
Establish the test configuration described in Paragraph 6.13.1.1.
(2)
Note the average temperature calculated in 6.13.1.2, Step
(2).
(3)
Move the
DVM
positive probe to
TP2.
(4)
Adjust
R16
to the voltage (Figure
6-23)
corresponding to the average temperature
used in Step
(2).
(5)
Remove the
DVM
positive probe from
TP2.
(6)
Remove the
DVM
negative probe from
TP5.
(7)
Remove the disk exerciser.
(8)
Deenergize the disk drive.
(9)
Remove temperature probes.
6-48
To Next Page
Loading...