LG E1951S Service Manual
Internal Use Only
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Europe/Africa http://eic.lgservice.com
Asia/Oceania
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COLOR MONITOR
SERVICE MANUAL
MODEL:
E1951S (E1951S -PNW.A**NAP for LGD LM185WH2-TRC2)
E1951T (E1951T -PNW.A**NAP for LGD LM185WH2-TRC2)
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
*To apply the RTD Chip.
Copyright © 2010 LG Electronics. Inc. All right reserved. - 1 - LGE Internal Use Only
Only for training and service purposes
CONTENTS
SPECIFICATIONS ..........................................................2
PRECAUTIONS ..............................................................3
TIMING CHART ..............................................................7
DISASSEMBLY .............................................................8
BLOCK DIAGRAM.........................................................13
DISCRIPTION OF BLOCK DIAGRAM ......................... 15
ADJUSTMENT ............................................................. 16
SERVICE MODE ......................................................... 19
TROUBLESHOOTING GUIDE .................................... 20
WIRING DIAGRAM ...................................................... 26
EXPLODED VIEW........................................................ 27
SCHEMATIC DIAGRAM............................................... 29
SPECIFICATIONS
E1951S/T
1. LCD CHARACTERISTICS
Type: Flat Panel Active matrix-TFT LCD
Active Display Area: 18.5 inches/47.0cm
Pixel Pitch: 0.3 mm x 0.3 mm
Surface Treatment: Anti-Glare coating
Resolution: Max: VESA 1366x768@60Hz.
Recommend: VESA 1366x768@60Hz.
Video Input:
Signal Input: 15 pin D-Sub Connector;
DVI-D Connector (Digital) (Only for E1951T)
Input Form: RGB Analog (0.7 Vp-p/75 ohm)
Digital(Only for E1951T)
Plug&Play: DDC 2B (Analog)
DDC 2B (Digital) (Only for E1951T)
2. POWER SUPPLY
2-1. Power: 12V==2.0A
2-2. Power Consumption
On Mode: 17W (Typ.)
Sleep Mode: ≤ 0.5 W
Off Mode: ≤ 0.5 W
3. Sync Input
Horizontal Freq. 30 kHz to 61 kHz (Automatic)
Vertical Freq. 56 Hz to 75 Hz (Automatic)
Input Form Separate Sync.:
Digital (Only for E1951T)
4. ENVIRONMENT
4-1. Operating
Temperature: 10°C to 35°C
Humidity: 20 % to 80% non-Condensing
4-2. Storage
Temperature: -10°C to 60 °C
Humidity: 5 % to 90 % non-Condensing
5. DIMENSIONS (with Stand)
Width 44.94 cm (17.69 inch)
Height 17.26 cm (6.80 inch)
Depth 35.6 cm (14.02 inch)
DIMENSIONS (without Stand)
Width 44.94 cm (17.69 inch)
Height 3.35 cm (1.32 inch)
Depth 27.9 cm (10.98 inch)
6. WEIGHT (excl. packing)
Weight: 2 kg (4.41 lb)
Copyright © 2010 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only
Only for training and service purposes
Copyright © 2010 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only
Only for training and service purposes
Copyright © 2010 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only
Only for training and service purposes
Copyright © 2010 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only
Only for training and service purposes
Copyright © 2010 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only
Only for training and service purposes
TIMING CHART
E1951S / E1951T
Display Modes (Resolution) Horizontal Freq. (kHz) Vertical Freq. (Hz)
1 720 x 400 31.468 70
2 640 x 480 31.469 60
3 640 x 480 37.500 75
4 800 x 600 37.879 60
5 800 x 600 46.875 75
6 832 x 624 49.725 75
7 1024 x 768 48.363 60
8 1024 x 768 60.123 75
9 1366 x 768 47.712 60
*Recommend Mode
Copyright © 2010 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only
Only for training and service purposes
DISASSEMBLY-Set
#1
Put the monitor on a soft flat.
#3
#2
Remove the base ass’y.
Turn the screw by using the screw handle.
#4
Turn the screw by using the screw handle.
#5
Turn the three screws by using the screw handle.
Copyright © 2010 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only
Only for training and service purposes
#6
Remove Rear Cover ass’y.
Remove the stand and hinge cover
#7
Turn the four screws by using the screw handle.
#9
Hinge
#11
Hinge cover
#8
Turn the four screws by using the screw handle.
#10
Stand
#12
Hinge bracket
Copyright © 2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only
Only for training and service purposes
#13
Rear cover assy
#15
Base plate
#17
#14
Turn the five screws by using the screw handle.
#16
Base
#18
Disconnect the wires cable.
Copyright © 2010 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only
Only for training and service purposes
Disconnect the FFC cable.
#19
Disconnect the LVDS cable.
#21
The Bezel assy
#23
Turn the screw by using the screw handle.
#20
The panel.
#22
Turn the screw by using the screw handle.
#24
Main board
Copyright © 2010 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only
Only for training and service purposes
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