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Document ID: GSMH-399EQ3

Multi-Sync/Multi-Scanning Monitors - Appears to boot in 40 column mode

Applicable to: World-Wide

Symptom:
The monitor may display characters in what appears to be 40 column mode. The memory count may appear in the middle center of the screen and the image appears to shift to the middle center (image wrap.) If a warm boot is performed, (Ctl-Alt-Del), the above symptom may recur.

Problem Isolation Aids:
The monitor was powered on before the system unit and is a multi-scanning or multi-frequency monitor.

Fix:
Power the monitor off and back on after the system unit has completed POST.

Note:
The monitor should be powered on approximately 10 seconds after the system unit. This will allow the system unit to complete POST.

This situation may occur with a limited number of early level multi-scanning monitors (6324, 6325, 9524 and 9525) during POST. When powered-on, the monitor starts its sweep initialization sequence and sweeps its frequency range (30KHz to 64KHz) attempting to lock on (or sync) to the incoming sync signal from the system unit. Due to timing considerations, between the system unit and the display, the display may lock onto twice the sync frequency of the signal coming from the system unit. While this situation has been fixed in later level monitors, it is not considered a defect. No parts should be changed to troubleshoot this condition. As stated in the user's manual shipped with the product, all multiscanning monitors should be powered on AFTER turning on the system unit.

SAS KEYWORDS:
PSY2 PSVP VPDISP PS2DISP
D/T9524 D/T9525 DISPLAY D/T6325
OVERLAPPING OVERLAP WRAP MULTISCAN
MULTISYNC

	Search Keywords
	Hint Category	General Information
	Date Created	12-04-94
	Last Updated	20-01-99
	Revision Date	20-01-2000
	Brand	IBM Monitors
	Product Family	Size labeled (14R/15V/etc.)
	Machine Type	6324, 6325, 9524, 9525
	Model	Various
	TypeModel
	Retain Tip (if applicable)	H121884
	Reverse Doclinks and Admin Purposes