ERAE Electronics Industry EPT4220AP Operating manual

MANUAL
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EPT-4220AP ERAE ELECTRONICS
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42 INCH PLASMA TV
Rev:00
REV
Description Change Page Author Date Approval
1Research
Engineer Jan. 13, 2005
Jan 13, 2005
RIVISION HISTORY
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PREFACE
This manual is prepared for the maintenance service for EPT-4220AP 42” PDPTV.
Maintenance procedures described in this manual are intended to isolate faulty parts and
replace them in the field. It also aims to serve as a guide in procuring replacement parts for
this product.
This manual is copyrighted and all rights are reserved. This product may not, in whole
or inpart, be copied, photocopied, translated or reduced to any electronic or machine
readable formwithout priorwritten consent except for copies retained by the purchaser for
backup purpose.
This manual includes system overview, major system assembly, components’
description, and the “Troubleshooting” making explanations on how to detect errors. It also
includes a flow chart for checking or correcting faults.
No warranty or representation, either expressed or implied, is made with respect to this
documentation, its quality, performance, merchantability or fitness for particular purpose.
No event that the vendor will be liable for direct, indirect, special, incidental or
consequential damages arising out of the user or inability to use this product or documentation.
☞. NOTICE :
The information found in this manual is subject to change without prior notice. Any
subsequent changes made to the data herein will be incorporated in further edition.
EPT-4220AP Service Manual
Copyright Sep, 2004
All Rights Reserved
Manual Version 1.0
Document #
P/N :

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Table of Contents
1. Introduction 1-1
1-1 Product Highlight 1-2
1-2 Technical Specification 1-3
1-3 Environmental Requirements 1-5
2. Mechanical Construction 2-1
2-1 Package Overview 2-2
2-2 Exploded Overview 2-4
2-3 Recommendation Spare Parts List 2-7
3. Procedure of Disassembly 3-1
3-1 Disassemble Back Cover and Jack Housing 3-1
3-2 Disassemble Back Bracket Parts and Board 3-2
3-3 Disassemble PDP Module 3-3
3-4 Disassemble Front Filter Glass Assy 3-4
4. The Function of Boards 4-1
4-1 VSC Board 4-1
4-2 Tuner Board 4-2
4-3 SUB AV Board 4-3
4-4OSD Board 4-4
4-5 IR & LED Board 4-5
4-6 RS232C Board 4-6
4-7Power Board 4-7
4-8 PDP Module 4-8
5. Troubleshooting 5-1
5-1 Equipment Needed 5-1
5-2 Main Procedure 5-2

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6. Panel Specification 6-1
6-1 General Specifications 6-1
6-2 Life Expectancy 6-2
6-3 Electrical Specifications 6-3
6-4 Optical Specifications 6-4
6-5 Dot Defects 6-5
7. Function Test & Alignment Procedure 7-1
7-1 Test Equipment 7-1
7-2 Test Condition 7-2
7-3 Test Display Modes and Pattern 7-3
7-4 Function Testand Alignment Procedure 7-4
7-5Cleaning 7-5
8. Firmware Upgrade Procedure 8-1
8-1 Equipment Needed 8-1
8-2 Setup Procedure 8-2
8-3 Upgrade Procedure 8-3
9. Appendix 9-1
9-1 Serial Number System Definition 9-1

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CHAPTER 1
Introduction
________ This manual provides an integral information you need to
maintain the PDP TV, and the manual is applied to the model
of EPT-4220AP PDP TV. There are nine topics in this manual, and you
can immediately identity the problem through the manual.
This manual is for the technicians and people who have the
electronic background. Send the product back to the distributor
for repairing and do not attempt to do anything which is complex
or isn’t mentioned in the Troubleshooting .____________________________

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1-1 Product Highlight
The major advanced features of this product are :
◆42” Color PDP panel (852*480 Pixels )
◆Analoginterface for plug and play convenience
◆1000 cd/m2 higher brightness and 3000:1 Contrast Ratio
◆1024*768 XGA @ 75Hz resolution support
◆Wide compatibility with 15.7-70KHz for horizontal scan
◆Multi-functionalOSD(On Screen Display) for user control
◆Built-in Power Supply
◆PIP (Picture in Picture) Function
◆160˚Wide Viewing Angle.
◆Panel Protection function

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1-2 Technical Specification
1-2.1 PDP Module
LGE PDP42V6####
Screen Size 42” diagonal
Dimension Outline 1006(W)*598(H)*61(D) ±1mm
ActiveArea 920.1(W)*518.4(H) ±0.5mm
Technology AC Plasma Technology
Display Pixels 852*480
Brightness 1000cd/m2 (typ.)
Contrast Ratio 3000 : 1 (min.)
Number of Color 16.7 M colors
Viewing Angle Over 160˚
Life time 60,000 hrs (min.)

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1-2.2 Compatibility
Input Signal
Video : Analog RGB, 0.7Vp-p
Composite, S-Video, Component1 (480i(60Hz),576i(50Hz))
Component2 ( 480p,576p, 720p(50/60Hz), 1080i(50/60Hz)
Synchronization Separate Sync (H, V), Sync On Green.
Displayable Color 16.77million colors
Compatibility Range
Maximum Pixel Frequency 78.75MHz (XGA@ 75Hz)
Horizontal Frequency 31KHz ~ 70KHz(SVGA)
Vertical Refresh 50Hz ~ 75Hz
1-2.3 Electrical Power
PowerSupply
Built-in Power Supply
AC220 ~240V / 50Hz, 320W
CB.CE Mark compliant
1-2.4 Mechanical
Stand Length 900mm
Height 426mm
Width 300mm
Weight 7Kg
Wall Mount
Width 25.1 inch/638mm
Height 16.9inch/430mm
Depth 1.2inch/5mm
Weight 11lbs/5Kg
Angle Adjustment 0˚, 10˚, 15˚, 20˚
1-2.5 Safety/Regulation

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CB.CE
1-3 Environmental Requirements
1-3.1 Temperature
Operating 0˚C ~ 40˚C (Neglect altitude)
Non-Operating -20˚C ~ 60˚C (For all altitude)
1-3.2 Humidity
Operating 20% ~ 80%(Withoutcondensation)
Non-Operating 10% ~ 90% (Without condensation)
1-3.3 Pressure
Operating 800~ 1100hPa (Altitude : 0 ~ 2000m)
Non-Operating 700 ~ 1100hPa (Altitude : 0 ~ 3000m)

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CHAPTER 2
Mechanical Construction
___________ This section provides the package and exploded overview,
replaceable parts list and recommendation parts list for the
42” PDP TV. You can place an order for correct parts
in the recommendation parts list._____________________________

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2-1Package Overview

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2-1.1Replacement Parts List
No. Code Number Description
186AELB307 TOP BOX-42N
293CELB304 / 93CELB305 PAD TOP L/R
392CELB309 PE BAG-42N
493CELB302 / 93CELB303 PAD DOWN-L/R
586AELB308 BOTTOM BOX-42N
6S150129161 ACCESSORY ASSY

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2-2 Exploded Overview
2-2.1 PDP SET OVER VIEW

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2-2.2 PDP MODULE OVERVIEW

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2-2.3 Replacement Parts List
2-2.3.1 PDP SET PART LIST
No. Code Number Description
170PELM531 FRONT COVER
2S150112161 IR BOARD ASSY
2-170AELM536 LENS GUIDE
2-270BELM535 LENS
2-331-0266 IR PCB
379FELG024 FILTER GLASS
471AELP352 FRAME BOTTOM-X
571AELP353 FRAME BOTTOM-Y
665-0061 PDP MODULE
771ZELM504 BRKT STAND
871AELP358 VERTICAL SUPP
971AELP354 FRAME TOP-X
10 71AELP355 FRAME TOP-Y
11 S150143161 SPEAKER ASSY
12 S150113161 A/V ASSY
12-171FELP438 SHIELD CASE-T
12-2S150141161 A/V PCB ASSY
12-371FELP439 SHIELD CASE A/V-B
12-470AELM527 KNOB GUIDE AUD
13 S150114161 OSD ASSY
13-131-0268 OSD PCB
13-270AELM525 BUTTON OSD
13-370AELM526 KNOB GUIDE OSD
14 S150126161 POWER S/W ASSY
14-170AELM524 BUTTON POWER
14-271AELP365 BRKT P-BUTTON
14-3AJ-00003 SNAP RIVET
15 S150125161 BRKT RS ASSY
15-131-0250 RS PCB
15-271AELP362 BRKT RS
16 S150128161 BRKT FAN ASSY
16-166-0049 FAN
16-271AELP367 BRKT FAN
17 71AELP363 SUPPORT POWER
18 71AELP3572 BRKT PCB

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No. Code Number Description
19 S150137161 NOISE FILTER ASSY
19-160-0033 AC INLET
19-271AELP366 BRKT IN-LET
20 S150122161 TUNER BOARD ASSY
21 S150110161 VSC BOARD ASSY
22 71GELP399 COVER SUB
23 71BELP374 BACK COVER
24 70CELM530 BACK SP-OSD(R)
25 70CELM529 BACK SP-AUD(L)
26 71AELP3565 COVER JACK
27 71AELP376 COVER PCB
28 70AELM528 DECORATION SP-L/R
2-2.3.2 PDP MODULE PART LIST
No. Code Number Description
1PSU
2Y-BOARD
3Y-DRIVER BOARD
4Z-BOARD
5CONTROL BOARD
6X-LEFT BOARD
7X-RIGHT BOARD
8
9
10
11
12
13
14
15
16
17

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2-3 Recommendation Spare Parts List
2-3.1 Spare Parts List
No. Code number Description Remark
16871QCH034A CTRL ASSY HAND INSERT 42V6 NEW SW
26871QDH066B YDRV ASSY HAND INSERT 42V6 TOP SW
36871QDH067B YDRV ASSY HAND INSERT 42V6 BOTTOM SW
46871QLH034B XRLT ASSY HAND INSERT 42V6 XL SW
56871QRH037B XRRT ASSY HAND INSERT 42V6 XR SW
66871QYH029A YSUS ASSY HAND INSERT 42V6_4 L SW
76871QZH033A ZSUS ASSY HAND INSERT 42V6 SW
86709Q00150A POWER SUPPLY ASSEMBLY 42 MULTI UNICORN PSU SW
93141Q00101A CHASSIS ASSEMBLY NOISE FILTER X-CAP 0.1 FOR 50 SW
10 3501Q00150A BOARD ASSEMBLY 42 MULTI UNICON PSU CM
11 6631Q39008F CONNECTOR ASSEMBLY 3.96MM 8PIN 880MM AMP PSU_Z-BD
CM
12 6631Q39025A CONNECTOR ASSEMBLY 3.96MM 10PIN AMP 150MM PSU-Y B
CM
13 6631Q39026A CONNECTOR ASSEMBLY 3.96MM 4PIN AMP 130MM PSU-Y BD
CM
14 VSC ASSY CM
15 TUNERASSY CM
16 CM
Note : SW = Swap Spare Parts, CM = Consume Spare Parts. You can place an order
for swap or consume spare parts to do replacement. Or just return swap spare parts
back for repair, but consume spare parts is not acceptable for repair or return.
SW is repairable, when it’s defective please return back the defective but complete parts
to swap for good parts. Regarding CM, it’s not repairable and you should give the order
to do replacement and discard the defective parts directly.

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2-3.2 Parts Illustration
1.
YDRV ASSY
HAND INSERT
42V6 TOP
2.
YSUS ASSY
HAND INSERT
42V6_4 L
3
.
POWER SUPPLY
ASSEMBLY 42
MULTI UNICORN
PSU
4.
ZSUS ASSY
HAND INSERT 42V6
5.
YDRV ASSY
HAND INSERT 42V6
BOTTOM
6.
XRLT ASSY
HAND INSERT 42V6
XL
7.
CTRL ASSY
HAND INSERT 42V6
NEW
8.
XRRT ASSY
HAND INSERT 42V6
XR

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9. VSC BOARD ASSY
10. Tuner B/D Assy

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CHAPTER 3
Disassembly Procedure
___________ This section provides disassembly procedures for 42”
PDP TV.Before you begin any of these procedures, be sure to turn off the
power and other attached devices; then disconnect the power cable from
the electronically outlet. Moreover, when youdisassemble the PDP TV, be
sure to put the screws in a safe place and separate them according to
grouping. ______________________