IBM ThinkPad 340 Series Hardware Maintenance Manual page 240

5. To exit the screen, select the cancel icon or press
Esc.
The error log is not saved when system power is
powered-off.
Checking the Installed Devices List
If a device is installed but the icon appears in a gray shade
rather than a dark shade on the basic diagnostics screen,
the device is defective. Reseat the device connectors. If
the symptom remains, replace the device or the system
board. If needed, adjust the contrast control to clearly
distinguish the shades of the icon.
If a device that is not installed appears in a dark shade, for
example, FDD-2 appears in a dark shade when NO
second FDD is installed, do the following.
1. Replace the first device, such as a FDD-1, HDD-1, or
PCMCIA-1.
2. If the problem remains, replace the system board.
PCMCIA-1, Parallel, and Serial icons are always displayed
in dark shade, because the icons represent subsystems of
the system board and not attachment of the devices.
The HDD-1, FDD-1, or PCMCIA-1 represents the first
drive in the system configuration, respectively. Similarly,
the HDD-2, FDD-2, or PCMCIA-2 represents the second
drive, usually attached through a port replicator or an
expansion unit.
Password Combinations
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 750Ce hardware maintenance
diskette into diskette drive A and power-on the
computer.
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