Procedure 10.1: CONNECT OFF-LINE SPARE DISK IN A RUNNING SYSTEM (340MB MHD
3B20D ONLY)
PROCEDURE
1.
CAUTION:
Operational testing of the off-line spare MHD by rotating it into service should not be
performed more often then once every 7 days. Great care must be taken when detaching and
attaching the connector to the disk file controller (DFC) since pins can be bent.
2.
On the front panel of off-line spare moving head disk (MHD), verify that the logical indicator plug labeled 0 is
installed.
3.
Check power and ground for the off-line spare MHD to insure that they meet the manufacturer's
requirements.
4.
Remove defective MHD from service.
Reference:
Procedure 10.6
5.
To power down off-line spare MHD, raise cover on start switch and push the
START
switch. Wait for disk to
stop spinning (
READY
lamp stops flashing and remains off).
6.
To power down defective MHD, raise cover on start switch and push the
START
switch. Wait for disk to stop
spinning (
READY
lamp stops flashing and remains off).
7.
To power down the defective MHD power controller, simultaneously depress the
OFF
switch and the
MOR
switch.
8.
To power down the off-line spare MHD power controller, simultaneously depress the
OFF
switch and the
MOR
switch.
9.
At the rear of the cabinet for the defective MHD, disconnect scan and signal distribute (SCSD) cable from the
back of the power controller.
10.
At the rear of the cabinet for the off-line spare MHD, reconnect the SCSD that was removed from the
defective MHD controller.
11.
Remove disk file controller (DFC) for bad MHD from service.
Reference:
Procedure 10.7
12.
Power down and remove cables for defective MHD.
Reference:
Procedure 10.12
13.
Connect cables for off-line spare MHD.
Reference:
Procedure 10.5
14.
NOTE:
The logical indicator plug "0" enables the DFC to properly select the MHD, which is
essential for using an "off-line" spare disk configuration. Plug "0" is for logical device 0 (MHD-0 and
235-105-210
October 1999
Copyright © 1999
Page 1
Summary of Contents for 5ESS-2000
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Page 1008: ...Figure 11 55 1 CTSNS DIP Switch Settings 235 105 210 October 1999 Copyright 1999 Page 2 ...
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Page 1289: ...Figure 15 17 2 AMATPS Data Link 235 105 210 October 1999 Copyright 1999 Page 2 ...
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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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Page 1421: ...Table 1 1 O M Checklist 235 105 210 October 1999 Copyright 1999 Page 3 ...