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Map 1523: Cannot Power On The Secondary I/O Drawer, Operator Panel Power
Present LED Does Not Come On
Step 1523-1
Attempt to power on the secondary I/O drawer (see "Powering Off and Powering On the
System" on page 429.)
Does the secondary I/O drawer power on?
NO
YES
Step 1523-2
Look at the power supply LED(s) at the front of the secondary I/O drawer.
Is the secondary I/O drawer equipped with two power supplies?
NO
YES
Step 1523-3
Is the power supply LED flashing?
NO
YES
104
Service Guide
Go to "Step 1523-2".
This ends the procedure. Go to "Map 0410: Repair Checkout" in the
Diagnostics Information for Multiple Bus Systems .
Go to "Step 1523-3".
Go to "Step 1523-5" on page 105
This ends the procedure. Go to "Map 0410: Repair Checkout" in the
Diagnostics Information for Multiple Bus Systems .
Go to "Step 1523-7" on page 106.
Go to "Step 1523-4" on page 105.
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