IBM T00 - Page 30

Step 1520-2
Check the circuit breaker for the drawer that does not have power.
Is the circuit breaker tripped?
NO Go to “Step 1520-7.”
YES Reset the circuit breaker by turning the circuit breaker off, then on. Go to “Step 1520-3.”
Step 1520-3
Is there power to the drawer?
NO Check the circuit breaker again. Go to “Step 1520-4.”
YES Go to ″MAP 0410: Repair Checkout″ in the Diagnostic Information for Multiple Bus Systems.
Step 1520-4
Is the circuit breaker tripped again?
NO Go to “Step 1520-7.”
YES Go to “Step 1520-5.”
Step 1520-5
1. Set the circuit breaker to the off position.
2. Disconnect the power cable from the device’s power supply.
3. Set the circuit breaker to the on position.
Is the circuit breaker tripped again?
NO Replace the device power supply. Go to ″MAP 0410: Repair Checkout″ in the Diagnostic
Information for Multiple Bus Systems.
YES Turn circuit breaker off and replace the power cable. Set the circuit breaker to the on position. Go
to “Step 1520-6.”
Step 1520-6
Did the circuit breaker trip again?
NO Go to ″MAP 0410: Repair Checkout″ in the Diagnostic Information for Multiple Bus Systems.
YES Replace the circuit breaker. Go to ″MAP 0410: Repair Checkout″ in the Diagnostic Information for
Multiple Bus Systems.
Step 1520-7
Is there power to the drawer?
NO Replace the device power supply. Go to “Step 1520-8” on page 19.
YES Go to ″MAP 0410: Repair Checkout″ in the Diagnostic Information for Multiple Bus Systems.
CAUTION:
Energy hazard, remove power before servicing. Disconnect two power supply cords.
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18 7014 Model T00, and Model T42 Service Guide