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Service Hints & Tips |
Document ID: CPES-38WFD7 |
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6553 Monitors - 2401 POST error with DDC enabled
Applicable to: World-Wide
Symptom:
A 2401 POST error codes may be experienced on systems which have 6553-503 monitors attached.
Problen Isolation Aids:
Only 6553-503 monitors, in serial number range 2300001 to 2308886 are affected.
Fix:
A limited number of 6553-503 monitors have been distributed with a wrong DDC check sum code. This can result in a POST (Power-On System Test) error on systems that support DDC, if the DDC function is enabled in the system unit.
Temporary work-around:
The monitor and system will function normally if the DDC is disabled. This can be done in the Video Setup section of the BIOS (Basic Input-Output System).
Having disabled DDC, to ensure flicker free operation the following refresh rates should be entered in the Video Setup section of the BIOS:
- Set the monitor type to: Custom
- Set 640 by 480 to: 85Hz
- Set 800 by 600 to: 85Hz
- Set 1024 by 768 to: 75Hz
- Set 1280 by 1024 to: 60Hz
An engineering investigation is currently in progress. A permanent solution for the problem is being formulated. This tip will be updated when the final fix is available.
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Hint Category |
Display/Monitor | |
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Date Created |
26-08-96 | |
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Last Updated |
20-01-99 | |
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Revision Date |
20-01-2000 | |
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Brand |
IBM Monitors | |
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Product Family |
P Series (P50/P70/etc.) | |
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Machine Type |
6553 | |
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Model |
503 | |
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TypeModel |
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