Procedure 4.5: PERFORM MANUFACTURER'S TESTS ON
KEYSTONE
®
III TAPE DRIVE
OVERVIEW
The tests performed in this procedure will verify the operation of the
KEYSTONE
®
III tape drive and ensure that the
write head current is optimal. This procedure must be run using the KS-23113 List 900 Calibration Tape (Hc) or an
equivalent 295 (+ or - 5) oERSTED tape which is writable at 6250 bits per inch (bpi). The tapes should also be
usable across the
ANSI
®
STD defined temperature range (16 degrees C to 32 degrees C) and humidity (RH 20%
to 80%). After calibration, to ensure system recovery via backup tapes, verify readability of the most current
GENBKUP
tapes. Also, create a new full set of
GENBKUP
tapes with the newly calibrated tape drive
characteristics. These tests are internal drive tests.
NOTE:
An optional jumper (W1) located on the servo/control circuit board (if equipped) will have to be moved so
that the tape drive will store the test adjustment results.
PROCEDURE
1.
Verify that the following correct firmware is installed in the Administrative Module (AM):
TN84:
MC4C151A1 at EQL 033-132 [Input/Output Processor 0 (IOP 0)]
UN145:
MC4C160A1 or A1B at EQL 033-078 (IOP 0)
UN28B:
MC4C077A1C (extra main memory) or MC3T003A1 (very large main memory) at EQL
060-036 & 160-036 [Both Control Units (CU)].
2.
Take the drive offline.
3.
CAUTION 1:
Take appropriate ESD precautions (that is, use ground strap) when handling
circuit boards.
CAUTION 2:
If it is necessary to remove the brackets at the top and bottom of the board assembly, use
caution and protect the area under the drives in case hardware is dropped.
Determine if an optional jumper (W1) exists on the servo/control circuit board and move it as follows:
(a)
On the rear of the tape drive, loosen the large thumb screws on the right-hand board assembly. This
assembly does not extend to the rear as far as the left-hand board assembly (which has ribbon
cables connected to it) and the right-hand board assembly is secured to an aluminum cage by the
large thumb screws. On the newer drives, it may be necessary to remove brackets at the top and
bottom of the board assembly.
(b)
Slowly swing the right-hand board assembly to the right.
(c)
Determine if the jumper (W1) exists. If so, slide the jumper off pins 2-3 and slide it back onto pins 1-2.
The jumper is rectangular shaped (normally a blue color) and is located in the lower middle area on
the component side of the board. Count the pins from right to left (1-3).
4.
Perform customer engineer (CE) test 37 as follows:
NOTE 1:
Test 37 sets up the velocity correction multiplier for the velocity DAC.
NOTE 2:
A tape
must not
be threaded for test 37.
235-105-210
October 1999
Copyright © 1999
Page 1
Summary of Contents for 5ESS-2000
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Page 1360: ...Figure 15 47 2 Typical SCANS III Link Diagram 235 105 210 October 1999 Copyright 1999 Page 2 ...
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