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Complete"Preparing the tape drive for service" on page 183.
Step power 01
Does the power LED on the back of the drive appear green?
Note: The Power LED is normally green. On occasion, it can be blue, which can be ignored. The blue color
is for future usage and does not indicate a problem with the drive.
Yes
This display is normal. Go to "Step power 02" on page 194.
No
Go to "Step power 05" on page 194.
Step power 02
Observe both power supplies in the cradle or shelf. Is each 'DC' LED ON?
Note: Attempt to correct this condition by reseating the cables and drive canister before you replace any
parts.
Yes
Normal operation. The drive canisters and both power supplies appear to be OK. However, an
intermittent failure in the cables between the power supplies and the drive might be occurring. Repair
or replace, as necessary.
No
Go to "Step power 03" on page 194.
Step power 03
Observe the AC LED of the failing power supply.
Is the 'AC' light ON?
Yes
Replace the power supply. See "FID 82: Power supply" on page 252.
No
Go to "Step power 04" on page 194.
Step power 04
Check the circuit breaker (CB) on the power source.
Is the CB ON (not tripped)?
Yes
Normal operation. Check the AC power cable to the power supply. If the cable is OK and there is AC
power to the power supply, but the 'AC' light is not ON, replace the power supply. See "FID 82: Power
supply" on page 252.
No
Reset the tripped CB. If the CB trips again, disconnect the power cords one at a time to isolate the
problem.
Step power 05
Check the Power LED on the other drive in the cradle or shelf.
Does the other 'Power' LED appear green?
Yes
Go to "Step power 06" on page 195.
194 IBM 3592 TS1140, TS1150, TS1155, and TS1160 Tape Drives: Maintenance Information
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