DIAGNOSTICS Troubleshooting
10DEC05
DG4825-1
Page
119 of 180
Section 3: Troubleshooting
Initialization Errors
“Power-On Self-Test” (POST) Errors
Important
• An error occurs if the CR 825/850 SYSTEM energizes but does not display the main
menu.
• In normal operation, the computer in the CR 825/850 SYSTEM emits one beep after
initializing.
• The computer emits more than one beep when a malfunction occurs.
• If the TOUCH SCREEN displays a POST Error, see the “Troubleshooting Section” of the
Owner’s Manual for the IBM COMPUTER.
1 Listen to the beeps when the computer energizes.
2 Use the Table 9 to diagnose the malfunction.
Table 9 Beep Codes
Beep Code Malfunction
1-2 Failure of the video ROM
1-1-3 Write/read test failure of the CMOS
1-2-2-3 Checksum failure of the BIOS ROM
1-2-1 Failure of the PROGRAMMABLE INTERVAL TIMER
1-2-2 Failure to initialize the DMA
1-2-3 Write/read test failure of the DMA PAGE REGISTER
1-2-4 “Refresh verification” failure of the RAM
1-3-3-1 Failure of the “First 64K RAM” test
1-3-2 Failure of the “First 64K RAM parity” test
2-2-3-1 Failure of the “Interrupt vector loading” test
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