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Installation And Configuration
7936 and 7937
3-3.
figure 3-1) and return the latch to the
(Operate) position.
6. Power down the drive.
7. Reconnect the HP-IB connector.
S. Power up the drive.
DRIVE INSTALLATION
WARNING
Anti-tip feet must be in position on the
cabinet when the drive is installed and
any time the drive is extended out of the
cabinet on its rack slides.
A total of two drives can be installed in the HP
19511A Cabinet or up to four drives can be instal-
led in a EIA 19-inch rack cabinet using HP 19512A
Rack Slide Adapter Kits. A special lifter tool, part
no. 07937-60141, allows one person to install the
drive in either cabinet. For instructions on how to
install the drive in the HP 19511A Cabinet and
EIA rack cabinet, refer to the H P 7936 and H P
7937 Disc Drive Operating and Installation Manual,
part no. 07937-60602.
3-4.
PRIMARY POWER
REQUIREMENTS
CAUTION
Do not operate a drive configured for
90-132 Vac on IS0-264 Vac, or vice ver-
sa. Also, do not operate a drive con-
figured for 60 Hz on 50 Hz, or vice ver-
sa. Failure to observe these precautions
may result in damage to the drive.
The drive has been factory preset for the proper
line voltage and frequency in your area. The stan-
dard model is configured for an ac input of 90-132
Vac, 60 Hz and a drive with option 017 is con-
figured for an input of IS0-264 Vac, 60 Hz. A
3-2
drive with option 15 is configured for an input of
50 Hz.
The voltage and frequency for which the drive has
been configured at the factory is marked on the
-LINE label attached to the rear panel of the
drive. The location of the label is shown in figure
3-2. Make sure that your power source meets the
requirements marked on the label.
Voltage configuration (standard/option 017) is ac-
complished within the drive by moving plug-in
connectors in power. supply PCA-A4 and primary
power PCA-AS.
Frequency configuration (standard/option 015) is
accomplished by changing the spindle motor pulley
and drive belt.
Details of how to change the drive voltage and/or
frequency configuration are provided in the H P
7936 and H P 7937 Disc Drive Operating and
Installation Manual, part no. 07937-90902.
3-5.
CONTROLS, INDICATORS, AND
CONNECTORS
The drive front and rear panel controls, indicators,
and connectors are identified in figure 3-1. The
functions of these components are described in the
following paragraphs.
3-6.
LINE- SWITCH
The LINE- switch controls the application of ac
power to the drive. Power is "on" when the switch
is in the 1 (in) position and "off" when it is in the 0
(out) position. The
I
and 0 markings correspond to
international symbology presently in use.
3-7.
CHANNEL ADDRESS/DIAGNOSTIC
SWITCH
The Channel Address/Diagnostic switch is a
4-segment switch assembly which selects the system
channel address and the drive self-test diagnostics.
The switch segments are read by the controller at
power-on.
The segments can be set with any
sharp-pointed tool, such as the tip of a ball point
pen.
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