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Step
5
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1. Unplug from the 7133, SSA adapter, or other device, the Fibre-Optic Extender whose
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Power light is off.
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2. At the connector from which you have unplugged the Fibre-Optic Extender, check the
voltage between pins 5 and 8; it should be +5 volts.
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Is the voltage correct?
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NO
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1
If the connector that you have just checked is on a 7133, exchange, in the
sequence shown, the following FRUs for new FRUs. Ensure that for each
FRU exchange, you go to "MAP 2410: 7133 – Repair Verification" on
page 2-2410-1 to verify the repair.
1. The first disk drive module in the string whose connector you have just
checked (see "Disk Drive Modules" on page 3-17.
For information about disk drive module strings, see "Internal
Connections (Models 010 and 020)" on page 1-17 or "Internal
Connections (Models 500 and 600)" on page 1-20.
2. If present, the dummy disk drive modules that are between the
connector and the first disk drive module of the string (see "Dummy
Disk Drive Modules" on page 3-28).
3. The card containing the connector that you have just checked (see
"Signal Cards and Bypass Cards" on page 3-43).
If the connector that you have just checked is on an SSA adapter,
exchange that adapter for a new one (see the Installation and Service
Guide for the using system).
If the connector that you have just checked is on some other device,
exchange, for new FRUs, the appropriate FRUs of the device (see the
service information for the device).
Check also the power source of the device.
G ro u n d
2
3
4
5
6
7
8
9
+ 5 Vo l t s
Chapter 2. Problem Determination Procedures
2-2330-5
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