4-4 Workstation 4 Setup Guide
Workstation 4 Diagnostics
Power On-Self Test (POST) Errors
Note 1
The POST detected the Disk On Chip, but the boot partition and or Windows
CE OS image was not found.
Note 2
The POST did not detect the Disk On Chip. This could be result of the device
not being installed, not formatted, defective, or a system board/socket problem
preventing the POST from accessing the DOC.
Note 3
The POST cannot detect the Compact Flash (CF) Card. It is either not
installed, defective, not formatted as a Windows file system, or a system
board/daughter card socket problem is preventing the POST from accessing
the card.
Note 4
If the POST indicates a touchscreen controller failure, make sure there are no
objects such as a pencil or pen on the screen. Cleaning the screen or placing an
object on the touchscreen during the POST can cause the touchscreen
controller to fail.
Note 5
The POST SDRAM test toggles each bit in each memory location by reading
and writing 0xAA and 0x55 patterns. The test will not detect a missing DIMM.
If the DIMM is missing, the beeper will sound once, but the blue splash screen
and logo do not appear.
Note 6
EEPROM U21 stores the system board serial number and the last power
management state.
Note 7
This error indicates a problem was found on the PCI Bus and could point to
any of the following devices.
• Ethernet Controller and Serial EEPROM.
• USB Controller.
• TFT Video Controller.
• IDE Controller.
• Audio Controller.
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