LG M2794D Service Manual

Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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5. RGB Video Trouble Shooting
Check inpu t signal format
Is it supported?
Check signal , Hsync, Vsync
(R673, R674)
Replace R6 73, R674
Check signal RGB
(R119, R104, R105
C121,C122,C119)
Y
N
Check JK607
Replace JK607
Y
N
Y
Replace R119, R104, R105,
C121,C122,C119
N
IC101 has problem
Y
Check RGB Cable connector
for damage
Y
Wave form of R673(Vsync)
Wave form of R673(Vsync)
Wave form of R104/C121
Wave form of R105/C122
Wave form of R119/C119

LG M2794D Specifications

General

Pixel pitch	0.313 x 0.313 mm
Aspect ratio	16:9
Display diagonal	27 \
Vertical scan range	56 - 75 Hz
Horizontal scan range	30 - 83 kHz
Contrast ratio (dynamic)	20000:1
Contrast ratio (typical)	1000:1
Viewing angle, horizontal	170 °
Display brightness (typical)	400 cd/m²
Audio system	SRS Surround XT, Dolby
Power requirements	90 – 264 Vac, 47 – 63 Hz
TV tuner integrated	Yes
Component video (YPbPr/YCbCr) in	3
Certification	TÜV-Typ, CE, EPA Energy Star, UL, CSA, SEMKO, FCC-B
Product color	Black
Market positioning	-
Compliance industry standards	DDC 2B
LED indicators	Stand-by
Power consumption (standby)	1 W
Power consumption (typical)	100 W
Sustainability certificates	ENERGY STAR

Weight and Dimensions

Depth (with stand)	210 mm
Width (with stand)	654 mm
Height (with stand)	496 mm
Weight (with stand)	8920 g