LG 22LS4D User Manual

LGE Internal Use OnlyCopyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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TROUBLESHOOTING
1. Power Board
1-1. The full flowchart for the voltage output
Start check
Manufacture’s model
passage
1. Check the Power Off
status.
Does the whole
screen appear?
Is it
identical to when the
power is off?
No
Yes
No
Yes
Yes
Yes
Yes
2. Check the Interface
signal status.
Is the Interface
signal operating?
Yes
3. Check the St-by 5V
signal circuit.
Does the
low pressure output
appear?
Does the
St-by 5V signal
appear?
No
No
Yes
4. Check the 5V Monitor
signal circuit.
Does the
5V Monitor signal
appear?
No
7. Check the VSC Vs-ON
signal
Does the
high tension output
appear?
Does the
VSC signal Vs-ON
appear?
No
No
Does the
high tension
output voltage
occur?
When
removing the Y B/D
Module input connector,
does output voltage
drop?
When the
Y, Z B/D Module
input connector, does Power
Board high tension
output voltage drop?
No No No
9. Check the Power
Board Output high
tension circuit
Yes
10. Check the Z B/D
Module output circuit
Yes
When
removing the Z B/D
Module input connector,
does output voltage
drop?
11. Check the Y B/D
Module output circuit
Yes
Yes
8. Check the Vs, Va
voltage output circuit.
Does the
Vs, Va voltage output
appear?
No
Yes
Yes
5. Check the VSC RL-ON
signal.
Does the
VSC signal RL-ON
appear?
No
6. Check the VSC low
pressure output
Does the
VSC low pressure
output appear?
No

LG 22LS4D Specifications

General

Integrated clock	Yes
Tilt angle range	-3 - 10 °
HD type	WSXGA+
Comb filter	3D
Display diagonal	22 \
Display brightness	300 cd/m²
Display resolution	1680 x 1050 pixels
Native aspect ratio	16:10
Contrast ratio (typical)	3000:1
RMS rated power	6 W
Number of speakers	2
RS-232 ports	1
Product color	Black
Power consumption (standby)	1 W
Power consumption (typical)	60 W

Weight and Dimensions

Depth (without stand)	68.6 mm
Width (without stand)	525.4 mm
Height (without stand)	440.6 mm
Weight (without stand)	5700 g