IBM 360X (2620) Laptop User Manual


 
General Checkout
The diagnostic tests are intended to test
only
IBM
products. Non-IBM products, prototype card, or modified
options can give false errors and invalid system responses.
Warning: The drives might have been rearranged or the
drive startup sequence might have been altered. Be
extremely careful during write operations such as copying,
saving, or formatting. Data or programs can be written
over if you select an incorrect drive.
Japanese Models Only
The Japanese model of the ThinkPad 700C has an
89-key keyboard. This keyboard is identified by the
additional keys at the left and right sides of the
spacebar.
When testing the diskette drive in the Japanese
model, the 1.2MB format (8 sectors per track and 15
sectors per track) in addition to the 720KB and
1.44MB formats are tested to ensure correct
operation.
A 2.0MB capacity diskette is required when testing the
1.2MB format.
1. Power-off the computer and all external devices.
2. Check all cables and power cords for correct
connection.
3. Make sure that no diskettes are in the drives.
4. Power-on all external devices.
5. Power-on the computer. If any error message
appears on the screen, go to “Symptom-to-FRU
Index” on page 82.
If no message appears on the screen, press
Ctrl+Alt+Delete to continue. After the cursor moves
to the upper right corner of the screen, press
Ctrl+Alt+Insert to start the system program. If the
IBM logo screen does not appear, insert the backup
copy of the system partition into the diskette drive and
start the system program again. Then press Ctrl+A,
and run the system checkout. For information on how
to disable the password, see “Power-On Password
(700, 700C)” on page 97.
6. Refer to the following table. If you do not find your
symptom listed, go to “Symptom-to-FRU Index” on
page 82, then go to “Undetermined Problem” on
page 93.
68 IBM Mobile Systems HMM