IBM ThinkPad 340 Series Hardware Maintenance Manual page 357

Password Combinations (POP, HDP,
PAP)
The password relationship is:
When POP is the same as HDP
The POP prompt appears, but the HDP prompt does
not appear.
When POP is not the same as HDP
Both POP and HDP prompts appear.
PAP and HDP
When PAP is used, the HDP is enabled automatically,
but no HDP prompt appears. The HDP is set the
same as PAP.
How to Run the Low Level Format
Do the following to format the hard disk.
Warning: Make sure the drive address to be formatted is
correct. This procedure will erase all information on the
disk.
1. Power-off the computer.
2. Insert the ThinkPad 755Ce hardware maintenance
diskette into diskette drive A and power-on the
computer.
Note: You can use this maintenance diskette for all
models.
3. Select Format the hard disk from the main menu.
4. Select the drive from the menu.
5. Follow the instructions on the screen.
PC Test Card LED
The green LED on the PC test card turns on when the
PCMCIA test is running. If the LED does not turn on,
check that the card is installed correctly by reseating the
card. If it still does not turn on after it is reseated, try
using another slot for the test. If the LED still does not
turn on and the test fails, replace the FRU shown in the
diagnostic error code.
ThinkPad 755CD, 755CDV (9545)
347