Map 1521: Cannot Power On The Primary I/O Drawer, Operator Panel Does Not
Show OK Prompt
Step 1521-1
Attempt to power on the primary I/O drawer (see “Powering Off and Powering On the
System” on page 429)
Does the primary I/O drawer power on?
NO Go to “Step 1521-2”.
YES This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostics Information for Multiple Bus Systems
.
Step 1521-2
Look at the power supply LED(s) at the front of the primary I/O drawer.
Is the primary I/O drawer equipped with two power supplies?
NO Go to “Step 1521-3”.
YES Go to “Step 1521-5” on page 92.
Step 1521-3
Is the power supply LED flashing?
NO Go to “Step 1521-7” on page 92.
YES Go to “Step 1521-4”.
Step 1521-4
Use the information in the “I/O Drawer and Power Supply LED Status” on page 28 to
answer the following question.
Is the power supply LED blinking quickly?
NO Check the SPCN cabling.
Check internal drawer cabling from power distribution card to primary I/O
backplane. See “Primary I/O Drawer Internal Cables” on page 483 in Chapter
10.
Replace the I/O drawer power supply.
Replace the primary I/O drawer backplane.
Replace the I/O drawer power distribution card.
This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostics Information for Multiple Bus Systems
YES Replace the power supply with the flashing LED.
This ends the procedure. Go to ″Map 0410: Repair Checkout″ in the
Diagnostics Information for Multiple Bus Systems
Chapter 3. Maintenance Analysis Procedures 91
To Next Page
Loading...