001 (continued)
– One 5.25-in. diskette drive
– One hard disk drive.
Machine Type 2155 or Machine Type 2168
– One 3.5-in. diskette drive
– One 5.25-in. diskette drive
– Two hard disk drives. (Some machines have one hard disk drive
installed.)
– Check all cables and power cords.
– Ensure the display brightness and contrast controls are not turned down.
Note: Some displays have detachable system I/O cable between the
display and the system unit. In either case, check the power cord or cable
before replacing the unit.
– Make sure there are no diskettes in the drives.
– Insert the Advanced Diagnostics diskette in drive A.
Note: High voltage Northern and Southern Hemisphere displays may
come with a voltage selector (110 V–220 V) switch. The 145 W
power supply has a voltage selector (110 V–220 V) switch. Match
the switch to the line voltage.
– Power on the system unit and display.
IS THE POWER SUPPLY FAN RUNNING?
Yes No
002
Go to “MAP 0020: Power” on page 2-20.
003
IS THE SYSTEM UNIT POWER ON INDICATOR LAMP LIT?
Yes No
004
– Power off the system unit.
– Ensure the power on indicator lamp is plugged in correctly. A lamp
that is plugged into the connector in reverse does not light.
(Step 004 continues)
Diagnostic Information 2-5
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