Acer S5201B, S5301WB service manual Optical & Optical Engine Trouble Shooting Guide

Optical & Optical Engine Trouble Shooting Guide

No.	Item	Trouble Shooting Guide
1	Brightness	1.	Change lamp
2	Uniformity	1.	Change lamp
		1.	Check ADC calibration
		2.	Check user’s menu brightness & contrast are default
3	FOFO Contrast	3.	Clean DMD
		4.	Clean PL
		5.	Check ILL stop assy
		1.	Clean PL
4	ANSI Contrast	2.	Clean DMD
		3.	Change PL
5	Color	1.	Check color wheel delay
		2.	Check CW 50% point. Replace CW if necessary
6	Color Uniformity	1.	Change lamp
		1.	Refer to Item#2-1 (attached below)
7	Blue Edge	2.	Change CM
		3.	Change SUB HSG
		1.	Refer to Item#2-1(attached below)
8	Blue/Purple Border	2.	Change CM
		3.	Change SUB HSG
9	Focus	1.	Change Projection Lens
		2.	Check parallel between PL datum and DMD
10	Dust	Clean DMD
		1.	Check connector between chipBD and MainBD
	Horizontal/Vertical	2.	Re-install DMD with chipBD
11		3.	Check if any pin of C-Spring is missing, damaged or dirty
	Strips
		4.	Change new ChipBD/C-Spring
		5.	Change new DMD
12	Pixel Fail	Change new DMD

2-1. “Blue Edge” Trouble Shooting:

I.Re-adjust “Overfill” first. For Overfill Re-adjustment:

i.Those 2 Adjustment Screws must be released for around 2 mm first.

ii.Alignment Sequence:

a.To adjust “Horizontal Adjustment Screw” firstly, then “Vertical Adjustment Screw”.

b.Refer to Figure 2-1..

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