IBM 1400 (2611) manual Power Systems Check, Adapter, If the computer fails

Symptoms	(Verified)	Go	to
Other	symptoms	Appropriate		check
		instructions		in this section,
		then use appropriate tables
		in	“Symptom-to-FRU Index”
		on	page 36.

Power Systems Check

To verify the symptom of the problem power on the puter using each of the power sources as follows

1.Remove the battery pack, diskette drive, and disk drive.

2.Connect the AC Adapter and check that power i plied.

3.Install the diskette drive or hard disk drive time, and chekc that power is uspplied from e power source.

If you suspect a power problem, refer the the power supply check listed below:

Ÿ “Checking the AC Adapter”

Ÿ “Checking the Operational Charging” on page 26

Ÿ“Checking the Battery Pack” on page 26

Checking		the	AC	Adapter:		If the computer fails
only	when		the	AC	Adapter is used or if the powe
cator		of	the	AC	Adapter	does not turn on, make su
following:
Ÿ	Power		cord	is	not damaged.
Ÿ	Power		cord	is	securely connected to the AC Ad
	and	AC	power		outlet.

If the above confirmation does not solve the prob replace the AC Adapter.

If the power-on indicator of the AC Adapter is o proceed to the next step.

1.Unplug the AC Adapter cable from the computer measure the output voltage at the plug of the Adapter cable.

Pin	Voltage (V	dc)
1	19.0	20.5
2	Ground

ThinkPad i Series 1400 25(Part I)