LG PB60G Service Manual

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LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
4.3. Lighting System Margin Inspection
Method and Spec.
- Apply for the sample that the decision for good/fail is difficult
during visual inspection of lighting margin.
(1) Prepare CL-200 with measurement surface of width
20mm, length 5mm as in (Fig. 4-3-1)
(2) Bring up Full White pattern and check whether Light Cyan
shows.
(3) Measure the brightness at the boundary of the screen.
(Refer to Fig. 4-3-3)
(4) Measure brightness at 10mm in the inner direction from
screen boundary. (Refer to Fig. 4-3-4)
(5) Lighting Margin Spec shall be smaller than 104% of (4)
brightness/(3)brightness.
4.4. Focus test method and subject
- Test pattern : Resolution Pattern , White Cross-Hatch
Pattern
- Tools : Focus width measurement ruler
4.4.1. Focus adjustment method
(1) Set the projection distance of Engine as 1200 mm (40 Inch
screen).
(2) Pop up the Resolution Pattern among the Test Patterns of
Set, and x the Focus on the part where the
Resolution Pattern is classied on each part of screen. (all
parts Balancing)
(3) Popup the White Cross-Hatch Pattern and measure the
width of each Point.
(4) Focus judging standard : 3.5 mm or less (Measure line
width excluding light Flare: Refer to Fig. 4-4-1)
4.4.2. Focus Stopper Location Verication
(1) Test pattern : White cross-hatch
(2) Visually verify focus after locating a white board 594 mm
from the projection lens so that screen is set to 20 inches.
(3) Inspect the location of the stopper after locating a white
board 1210 mm from the projection lens so that screen is
set to 40 inches
(4) Evaluation criteria for stopper location
Non-defective : Bushing shall be located within A marking.
(Fig. 4-3-3)
(Fig. 4-3-1) CL-200 for lighting margin inspection (right side)
(Fig. 4-3-2) CL-200 for lighting margin inspection (right side)
(Fig. 4-3-3) Measure brightness of screen boundary
(Fig. 4-3-4) Measure brightness at 10mm inside the screen
(Fig. 4-4-1) Standard for deciding line width
Red Line ( light Flare), Blue Line ( Thick Flare)
(Fig. 4-4-2) Resolution Pattern
(Fig. 4-4-3) Bushing verication location

LG PB60G Specifications

General

Native aspect ratio	16:9
Projection distance	- m
Projection technology	DLP
Supported aspect ratios	4:3, 16:9
Contrast ratio (typical)	15000:1
Digital gamma correction	Yes
Screen size compatibility	25 - 100 \
Projector native resolution	WXGA (1280x800)
Lamps quantity	1 lamp(s)
Light source type	LED
Service life of light source	30000 h
Focus	Manual
Offset	100 %
Throw ratio	1.5:1
Focal length range	- mm
Full HD	No
Supported video modes	1080i, 1080p, 480i, 480p, 720p
Analog signal format system	-
Supported graphics resolutions	1280 x 720 (HD 720), 1280 x 800 (WXGA), 1680 x 1050 (WSXGA+), 1920 x 1080 (HD 1080), 854 x 480 (WVGA)
RMS rated power	2 W
Number of built-in speakers	2
Audio (L/R) in	3
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
S-Video inputs quantity	0
Noise level	31 dB
Certification	KC/KCC, FCC/UL
Noise level (economic mode)	26 dB
On Screen Display (OSD) languages	ARA, CHI (SIMPL), DEU, ENG, ESP, FRE, GRE, ITA, KOR, POL, POR, RUS, SWE, TUR
Placement	Desktop, Tripod
Product type	Standard throw projector
Product color	White
Cable lock slot type	Kensington
Power source	AC
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (max)	60 W
Power consumption (standby)	0.5 W
Cables included	AC, Component
Operating temperature (T-T)	0 - 40 °C

Weight and Dimensions

Depth	103 mm
Width	158 mm
Height	33 mm
Weight	470 g