LG 32LN540B Service Manual

Contents of LCD TV Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
1
A. Video error_ No video/Normal audio
Check LCD back light with naked eye A1
2 LED driver B+ 24V measuring method A2
3 Check White Balance value A3
4 Power Board voltage measuring method A4
6
A. Video error_ No video/Video lag/stop
TUNER input signal strength checking method A5
7 LCD-TV Version checking method A6
9
A. Video error_Color error
LCD TV connection diagram A7
10
11 Check Link Cable (LVDS) reconnection condition
A8
A9
12 Adjustment Test pattern - ADJ Key A10
13
A. Video error_Vertical/Horizontal bar,
residual image, light spot
LCD TV connection diagram A8
14 Check Link Cable (LVDS) reconnection condition
A8
A9
15 Adjustment Test pattern - ADJ Key A10
16
<Appendix>
Defected Type caused by T-Con/ Inverter/
Module
Exchange T-Con Board (1) A-1/5
17 Exchange T-Con Board (2) A-2/5
18 Exchange LED driver Board (PSU) A-3/5
55” : driver board
Other : PSU
19 Exchange Module itself (1) A-4/5
20 Exchange Module itself (2) A-5/5
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Only for training and service purposes
LGE Internal Use Only

LG 32LN540B Specifications

General

Screen shape	Flat
Response time	- ms
Display diagonal	32 \
Display brightness	- cd/m²
Display resolution	1360 x 768 pixels
Native aspect ratio	16:9
Native refresh rate	50 Hz
LED backlighting type	Direct-LED
Display diagonal (metric)	81.2 cm
Supported graphics resolutions	1360 x 768 (WXGA)
Motion interpolation technology	MCI (Motion Clarity Index) 100
3D	No
Annual energy consumption	57 kWh
Storage temperature (T-T)	-20 - 60 °C
Storage relative humidity (H-H)	0 - 85 %
Operating relative humidity (H-H)	0 - 80 %
Tuner type	Analog & digital
Analog signal format system	-
Digital signal format system	DVB-C, DVB-T
Audio system	Virtual Surround
RMS rated power	20 W
Number of speakers	2
HDMI version	1.4
DVI-D ports quantity	0
USB 2.0 ports quantity	1
Audio formats supported	AAC, AC3, HE-AAC, MP3, PCM
Image formats supported	JPG, JPS, MPO
Video formats supported	DIVX, MPEG
Product color	Black
Mercury content	0 mg
Panel mounting interface	200 x 100 mm
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	12.3 W
Power consumption (typical)	39 W
Cables included	AC
Operating temperature (T-T)	0 - 40 °C

Weight and Dimensions

Depth (with stand)	207 mm
Height (with stand)	497 mm
Weight (with stand)	6700 g
Depth (without stand)	79 mm
Width (without stand)	738 mm
Height (without stand)	437 mm
Weight (without stand)	6000 g