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 Go to “Step 1523-2”.
YES This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostics Information for Multiple Bus Systems
.
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 Go to “Step 1523-3”.
YES 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
.
Step 1523-3
Is the power supply LED flashing?
NO Go to “Step 1523-7” on page 106.
YES Go to “Step 1523-4” on page 105.
104 Service Guide
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