41. Is the background light for the Data display on the control panel on, the
power on LED blinking, or are there any characters displayed on the control
panel?
Note: The background light is a dim (yellow) light in the Data area on the
control panel.
No Yes
↓ Go to step 60 on page 53 of this procedure.
42. Use a multimeter to measure the AC voltage at the customer’s AC power
outlet.
DANGER
Dangerous voltage being measured. (RSFTD005)
Is the AC voltage from 200 V AC to 240 V AC or from 100 V AC to 127 V AC?
Yes No
↓ Inform the customer that the AC voltage at the power outlet is not
correct.
This ends the procedure.
Note: Some systems have more than one mainline AC power cable. For those
systems, check both power cables when answering the following
questions.
43. Is the mainline AC power cable from the failing unit to the customer’sAC
power outlet connected and seated correctly at both ends?
Yes No
↓ Connect the mainline AC power cable correctly at both ends.
This ends the procedure.
44. Perform the following:
DANGER
Dangerous voltage being measured. (RSFTD005)
a. Disconnect the mainline AC power cable from the failing unit.
b. Use a multimeter to measure the AC voltage at the end of the mainline AC
power cable of the failing unit.
c. AC modules (part 87G6300 and 21H7697) must have 200 V to power on.
Is the AC voltage from 200 V AC to 240 V AC or from 100 V AC to 127 V AC?
No Yes
↓ Go to step 47 on page 51 of this procedure.
45. Are you working on a Power Distribution Unit with tripped breakers?
No Yes
↓ Reset the tripped Power Distribution Unit breaker, and go to the
power problem procedure for the unit that is connected to the tripped
breaker.
This ends the procedure.
Power Problems
50
iSeries Model 830, 840, SB2, and SB3 Problem Analysis, Repair and Parts V5R1
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