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Appendix C: Hardware Troubleshooting
Problem C-1
Appendix C
Hardware Troubleshooting
C.1. Problem
♦ LCD is off
1. Check the power connection on the controller board and LCD panel.
2. Check that a minimum of 128MB SDRAM DIMM is installed.
♦ 7-segment LED flashes "F"
1. The DIMM module is not installed yet.
2. The socket plug (loop-back circuits board) for the battery charger connector
(JP8) is not installed.
Problem Solution
7-segment LED flashes "F" 1. DIMM module not installed yet.
2. Socket plug (loop-back circuits board) for battery
charger connector (JP8) not installed.
SCSI channel failure detected
upon start-up (SCSI cables
connected)
Message on LCD:
1. Check cable connection
2. Check ID numbers (must be unique for each device
on the same SCSI channel).
3. Make sure that SCSI channels are properly
terminated.
4. Check the voltage output of the power supply.
5. Connect both power connectors
Initialization failure 1. Check ID numbers (must be unique for each device
on the same SCSI channel).
2. Make sure terminators are properly installed.
Cannot detect SCSI drive 1. Check drive power connection.
2. Check drive SCSI cable connection.
3. Check ID numbers (must be unique for each device
on the same SCSI channel).
Host can not detect the controller 1. Check host-side SCSI cable connection.
2. Check SCSI port to LUN assignment.
3. Check logical drive's mapping to LUN.
4. If there is no logical unit created, the controller must
be set as a peripheral device.
SCSI CHLs fail
CHL=x,x,x