How it Works
Mitsubishi
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LT-2220
Owner's Manual
68 pgs3.49 Mb0
Schematic
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Service Manual
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User Manual
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Mitsubishi LT-2220, LT-2240, LT-3020, LT-3040, LT-3050 Schematic

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MITSUBISHI ELECTRIC
2003-2004
LIQUID CRYSTAL DISPLAY TELEVISION
LT-2220 LT-2240 LT-3020 LT-3040 LT-3050
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and "PRODUCT SAFETY NOTICE" contained in this manual.
SPECIFICATIONS
• Power : [LT-2220, LT-2240] AC ADAPTOR
In - AC 120V, 60Hz; Out - 20VDC 6.0A
: [LT-3020, LT-3040, LT-3050] 120V, 60Hz, 2.2A
• LCD Panel : Resolution - 1280X768 : Pixel Pitch - [LT-2220, LT-2240] 0.375mm
[LT-3020, LT-3040, LT-3050] 0.5025mm
• Analog Inputs : VHF/UHF 75Ω unbalanced : Two A/V Inputs (Composite or S-Video)
L-R Audio
: Two Component Video Inputs (480i/480p/
720p/1080i) L-R Audio : PC Input - 60Hz (VGA,S-VGA,XGA,W-XGA) : PC Audio - 3.5mm Mini-Jack
• Digital Input : MonitorLink™/DVI (Video Sources Only) L-R Audio (Analog)
: MonitorLink™ Control/RS-232C
• Audio Outputs : L-R Audio Output (Fixed/Variable)
: Headphone Jack (Variable) 3.5mm
• Tuning : NTSC 181Channel Analog Cable
• Frequency Range : VHF 54 ~ 470MHz
UHF 470 ~ 806MHz
• Speakers : [LT-2220, LT-2240] Left & Right (2 X 2.3W) Sub (3.4W) : [LT-3020, LT-3040, LT-3050] Left & Right (2 X 3.5W) Sub (6W)
• Weight / Cabine t Dim ensions With Stand: Height Width Depth Weight
[LT-22XX] 20-1/4" 22-3/4" 11-7/8" 36.6 lbs [LT-30XX] 25-3/8" 29-3/4" 11-7/8" 54.3 lbs
W/O Stand: Height Width Depth Weight
[LT-22XX] 18-5/8" 22-3/4" 4" 19.8 lbs [LT-30XX] 23-1/4" 29-3/4" 5" 37.5 lbs
• Weight and dimensions shown are approximate.
• Design specifications are subject to change without notice.
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2004 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
CONTENTS
INTRODUCTION .................................................................................................................................. 5
PRODUCT SAFETY NOTICE ............................................................................................................... 5
SAFETY PRECAUTIONS ..................................................................................................................... 5
DISASSEMBLY
LT-22XX ............................................................................................................................................. 7
LT-30XX ........................................................................................................................................... 13
ELECTRICAL ADJUSTMENTS
Initial Setup .................................................................................................................................... 21
CIRCUIT EXPLANATIONS & BLOCK DIAGRAMS
Circuit Explanations ....................................................................................................................... 23
Block Diagrams.............................................................................................................................. 29
TEST POINT LOCATIONS AND DESCRIPTIONS
PWB-SET Test Point Locations and Description ............................................................................ 33
PWB-MAIN Test Point Locations and Description .......................................................................... 35
TROUBLESHOOTING
LT-22XX Power Troubleshooting ...................................................................................................... 37
LT-30XX Power Troubleshooting ...................................................................................................... 39
Video Troubleshooting .................................................................................................................... 41
Audio Troubleshooting .................................................................................................................... 51
Remote Control & Front Switch Troubleshooting ............................................................................ 53
REPLACEMENT PARTS
Replacement Parts List .................................................................................................................. 55
INTERCONNECT WIRING DIAGRAM
Page 3
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in television receivers have special safety related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc.
Replacement parts which have special safety characteristics are identified in this service manual.
The replacement for any safety part should be identical in value and characteristics.
SAFETY PRECAUTIONS
NOTICE: Observe all cautions and safety related notes located inside the receiver cabinet and on the
receiver chassis.
WARNING:
1. Operation of this receiver outside the cabinet or with the cover removed presents a shock hazard from the receiver's power supplies. Work on the receiver should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment.
2. Do not install, remove or handle the LCD panel in any manner unless shatterproof goggles are worn. People not so equipped should be kept away while the panel is being handled. Keep the panel away from the body while handling.
3. When service is required, observe the original lead dress. Where a short-circuit has occurred, replace those components that indicate evidence of overheating.
Leakage current check
Before returning the receiver to the customer, leakage current should be measured using following methods.
1. Cold Check
With the alternating current (AC) plug removed from the AC source, place a jumper across the two AC plug
prongs. Connect one lead of an ohm meter to the AC plug and touch the other lead to each exposed metal part (i.e. antennas, handle bracket, metal cabinet, screw heads, metal overlay, control shafts, etc.), particularly any exposed metal part that has a return path to the chassis. The resistance of the exposed metal parts having a return path to the chassis should be a minimum of 1Mega Ohm. Any resistance below this value indicates an abnormal condition and requires corrective action.
2. Hot Check ...Use the circuit shown below to perform the hot check test.
1. Keep switch S1 open and connect the receiver to the measuring circuit. Immediately after
connection, and with the switching devices of the receiver in their operating positions, measure
the leakage current for both positions of switch S2.
2. Close switch S1, energizing the receiver. Immediately after closing switch S1, and with the
switching devices of the receiver in their operating positions, measure the leakage current for both positions of switch S2. Repeat the current measurements of items 1 and 2 after the receiver has
reached thermal stabilization. The leakage current must not exceed 0.5 milliampere (mA).
Page 5
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-22XX)
Remove the screws and components in the quantities indicated. Reassemble in reverse order.
1. COVER, REAR 2. STAND UNIT
Page 7
3. BACK UNIT
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-22XX) CONTINUED
4. BACK COVER
Page 8
5. PWB-SET
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-22XX0) CONTINUED
6. PWB-MAIN
Page 9
7. CHASSIS BASE
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-22XX) CONTINUED
Page 10
8. LCD
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-22XX) CONTINUED
9. PANEL
Page 11
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-22XX) CONTINUED
WIRING HARNESS LOCATIONS
Page 12
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-30XX)
Remove the screws and components in the quantities indicated. Reassemble in reverse order.
1. COVER, REAR
Page 13
2. STAND UNIT
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-30XX) CONTINUED
3. BACK COVER
Page 14
4. UNIT SPEAKER
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-30XX) CONTINUED
5. BRACKET, VESA
Page 15
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-30XX) CONTINUED
6. SHIELD, POWER & SHIELD, CASE
7. COVER, TERMINAL, LEFT & RIGHT
Page 16
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-30XX) CONTINUED
8. ASSY-PWB-MAIN/ASSY-PWB-SET/UNIT-POWER
Page 17
9. CHASSIS, REAR
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-30XX) CONTINUED
Page 18
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-30XX) CONTINUED
10. BRACKET T/B/LCD PANEL
11. BEZEL
Page 19
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
DISASSEMBLY PROCEDURE (LT-30XX) CONTINUED
WIRING HARNESS LOCATIONS
Page 20
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050

Initial Setup

A. Option Menu Setup
Follow the steps below for the initial set-up:
1. Select the "MENU" display by pressing the "MENU" button once.
2. Press the number buttons "2", "0", "7", "0" in sequence to select the "OPTION MENU" display.
3. Press the "ADJUSTpq" buttons to select "INITIAL."
4. Press "ENTER."
NOTE: At this time channel 3 is automatically selected and all Menu and Audio/Video user setting are set
to the defaults shown in the chart below.
MENU-2-0-7-0
OPTION MENU
Initial Power Restore :OFF DTV Port :Auto Direct Key Mode :OFF
B. Default Settings
MAIN MENU DEFAULT SETTINGS
SETUP
Memorize channels Language (idioma) English V-Chip Stop Time 12:00AM Audio Output Variable Front Button Lock Off Lock by Time Off
CLOCK
Clock Setting Manual Unlock Time N/A Treble 31 Clock Time - - : - - - - Balance 31 Set Day Sunday Video Mute On Sub-Woofer Level 31
CAPTIONS
Closed Captions On if Mute PC Power Save On TV Listen To Stereo CC Background Gray Level Sound Off
CHANNEL EDIT
Antenna ANT-A Set Time - - : - - - - Contrast 31 Channel 3 Set Day Sunday Brightness 31 Memory Deleted Sharpness 31 Name N/A Auto Color Correction Off Color 31 SQV N/A Tint 31
V-CHIP-LOCK
V-Chip Off Red 31 Video Noise Standard TV Rating TV-PG Yellow 31 Film Mode (Auto) On FV- Fantasy Violence Allow Green 31 Back Light 63 D-Sexual Dialog Allow Cyan 31 PC/DVI H-Position 31 L-Adult Language Allow Blue 31 PC/DVI V-Position 31 S-Sexual Situations Allow PC Video Clock 31 V-Violence Allow PC Fine Detail 31 Programs Not Rated Allow PC H-Resolution 31 Movie Rating PG PC V-Resolution 31
V-CHIP LOCK By Time
V-Chip Start Time 12:00AM TV Speakers (Internal) On
AUDIO SETTINGS
Lock Time N/A Bass 31
ADVANCED FEATURES
Black Enhancement On Surround Off
TIMER
Timer Off
COLOR BALANCE
MANUAL COLOR ADJUST
Magenta 31 Color Temp High
VIDEO SETTINGS
AUDIO/VIDEO
Page 21
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050

Circuit Explanations

1. Video circuits
This section explains the video circuitry of models LT-2220/LT3020. Both models have almost the same circuits. The explanation corresponds to the various inputs (PC, TV, VIDEO, Component, DVI). The HD input has realized high definition with the resolution of WXGA. (Refer to the LT-2220 / LT-3020 Video block diagram, for the flow of video signals.)
1-1. Video input circuit
1-1-1. PC Input video circuit For PC input, video is inputted into IC400 of the signal processing IC via the following IC’s.
(A) IC2A3 : Analog-to-digital conversion IC (AD9883AKST-110 : Analog devices) The video signal (R, G, B) of PC input is changed into a digital signal (8 bits each) from an analog signal. Besides digital conversion, this IC has the functions below:
- Contrast adjustment for PC
- brightness adjustment for PC
This IC is controlled by register control of IC 2A3 via 3.3V IIC-bus.
(B) IC2A2 : Inverting IC with Schmidt trigger (74LCX14 : Fairchild)
Input IC for Horizontal and Vertical sync signals from the PC input. In case of noise on the leading and trailing edges or low amplitude of the sync signals outputted from a PC, it is necessary to modify the waveform.
Improper waveforms are corrected by this IC in the following manner.
- Noise on the leading/trailing edge : Rise-time and fall-time is carried out early.
- Waveform is noisy : False triggering prevented by the Schmidt circuit.
- Low Amplitude : If voltage threshold is satisfied, it will output at 3.3V.
Since the IC is an inverter, it will let it pass twice and has united polarity.
1-1-2. Component and DVI Input circuit. For Component and DVI inputs, video is inputted into IC400, signal processing IC, via the following IC’s.
(C)IC204 : Analog-switch IC (BA7657 : Rohm) In this IC, one of the 2 component signal inputs (Y, Cb, Cr) is chosen by the select signal. Select signal CTL is controlled by the MCU.
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
(D)IC2J1 : TMDS receiver IC with HDCP (Sii907B : SiliconImage)
In this IC, the input signal is processed based on EIA-861A. Inputs from a TMDS-Interface are converted into a RGB analog signal. HDCP and HDTV resolutions are supported. When no DVI signal is input, it changes to standby mode automatically and power consumption is lowered. The LCD panel specification is for input signals whose vertical sync signal is 60Hz. The outputs of this IC include separate horizontal and vertical sync signals.
(E)IC201 : Analog-switch IC with LPF (SM5301A : NPC) In this IC, the component signal (Y, Cb, Cr) from IC204 or DVI signal (R,G,B) from IC2J1 is chosen by the select signal and outputted. Select signal MUXSEL is controlled by the MCU.
(F) IC202 : Sync separate IC (LM1881M : National Semiconductor) Used for Component input. This IC separates the composite H and V sync signal from the composite video signal The composite sync signal is sent to IC203 (Sync select IC).
(G) IC203 : Sync select IC (HD74LV157: Hitachi) In this IC, the composite sync signal from IC202(for component) or Separate sync signal from IC2J1(for DVI) is chosen by the select signal and outputted. Select signal MUXSEL is controlled by the MCU. The output from this IC is sent to IC400 (Signal processor IC) in order to remove the
vertical sync signal and output the separated horizontal sync signal. The horizontal sync signal is then routed to IC205 (Analog-to-digital conversion IC).
(H) IC205 : Analog-to-digital conversion IC (AD9883AKST-110 : Analog devices) The Component video (YCbCr / RGB) or DVI inut is converted into a digital signal (8 bits each) from an analog signal. Besides digital conversion this IC performs the following:
- Contrast adjustment for Component or DVI
- brightness adjustment for Component or DVI
This IC is controlled by register control of IC 205 via 3.3V IIC-bus. This IC’s output is sent to IC500.
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
(I) IC500 : Interlace-to-Progressive conversion IC ( gm6015 : Genesis) This IC performs the following functions to all input signals except the PC input.
- Motion adaptive De-interlacer for SD (480i) signals.
- Scaling
- PIP / POP control for AV input combinations.
- Color / tint control
- 3 dimension Noise reduction.
- Adaptive Film mode
- Sync Separation for Composite sync.(for component only)
A format change to the input signal is also made by this IC.
Control is performed in 5-line serial communication from the MCU.
1-1-3. VIDEO and TV input circuitry For VIDEO and TV inputs, the signal is applied to IC400, signal processing IC, via the following ICs.
(J)IC701 : Analog-switch IC (CXA2089 : SONY) In this IC, the composite signal (CVBS) from video1/2 input or composite signal (S-video) from video1/2 input is chosen by register control of IC 701 via 5V IIC-bus.
(K)IC702 : Buffer IC with LPF ( MM1566AF : Mitsumi) IC701 reduces the high frequency noise ingredient of the video signal.
(L)IC100 : Analog-switch IC (CXA2069 : SONY)
In this IC, the composite signal (CVBS / S-video) from the video1/2 inputs or the composite signal (CVBS) from the TV input is selected by register control of IC 100 via 5V IIC-bus.
It is also selected and sent to IC300 for CCD use.
(M)IC601 : Digital decoder IC with 3D Y/C separation (uPC64011 : NEC) This IC converts the analog video signal (S-VIDEO/CVBS) from IC100 into a digital signal. Besides digital conversion this IC also has the following functions.
- 3 dimension Y/C separation for CVBS
- Contrast adjustment.
- Brightness adjustment.
- FIELD signal generation.
- PLL (Phase-Locked Loop) : referential clock generation.
- Sync signal generation
This IC is controlled by register control of IC 601 via 3.3V IIC-bus. This IC’s output is sent to IC400. (The output format is YPbPr and WXGA. Thw Vertical frequency is 60Hz.)
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
1-2. Signal processor circuit
(N)IC400 : Signal processor IC ( M66473FP : Mitsubishi) This IC has the functions below.
- Scaling for PC
- PIP/POP control for PC and AV combination
- Picture enhancement
- Auto setup for PC
- Colorsync function
- Frequency measurement / distinction
- Sync separation for component CS
- Color space conversion ( YPbPr à RGB )
- Gamma correction
This IC is controlled by register control of IC 400 via 5-lines serial communication. This IC’s output is sent to IC4A0. (The output format is RGB and WXGA, and Vertical frequency is 60Hz.)
(O)IC4A0 : OSD mixing IC ( M66617FP : Mitsubishi) This IC combines the picture signal outputted from IC400, the OSD signal outputted from the MCU and the signal detected by CCD. V-CHIP function is also controlled by this IC.
This IC is controlled by register control of IC 4A0 via serial communication. The IC’s output is sent to IC4A1.
1-3. Output signal circuit
(P)IC4A1 : LVDS transmitter IC ( THC63LVDM83R : Thine) This IC converts 28bits of TTL/CMOS data into LVDS data stream. In 28 bits, 24-bits digital video signal, horizontal sync signal, vertical sync signal, an enable signal and a clock signal for the LCD panel are included.
A phase-locked transmit clock is transmitted in parallel with the data streams over a fifth LVDS link. This IC’s output is sent to the LCD panel.
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
2. Audio circuits
The audio circuits and speaker system of LT-22XX/LT30XX basically have the same circuits, except the Vcc applied to the audio amplifier is different. The specifications are as follows.
- High Power (LT-22XX : 8W ,LT-30XX: 12W)
- 2.1ch Sub woofer speaker system
- Impedance : 8 +/-1.2 ohms ( LT-22XX / LT -30XX )
- Compact and high performance sound enclosure box.
- Minimization of vibration noise
Refer to the LT-22XX / LT -30XX Audio block diagram.
2-1 Audio input mixing circuits The audio input block consist of 2 AV-SW, IC701(CXA2089) on SUB-PWB and IC100(CXA2069) on MAIN-PWB. Audio inputs for VIDEO1 and VIDEO2 are connected to IC701. Other external audio Inputs (Component1/2 and DVI and PC) are connected to IC100. Their output is connected to IC710 (Audio Processor : MSP3440G ) of Scart1 / Scrat2 input port. TV broadcasting audio(SIF) is also connected to IC710’s IF Input port. Input sources are selected by register control of IC 701/IC100/IC710 via 5V IIC-bus.
2-2 Audio processor IC MSP3440G is used as the main audio processor. This IC’s functions are as follows.
- De modulator (SAP/Stereo)
- Sub-woofer output
- Volume control
- Tone control
- Surround
- L/R mixing
- Audio line output
Both models have the following audio controls on the users menu: Bass, Treble, Balance, Surround, Listen
to, Level Sound, Sub Woofer, Audio Out Fixed/Variable. Audio adjustment of all controls except volume is performed by this IC. (Refer to the “Owner’s guide” for a full explanation of each control.)
2-3 Audio amplifiers and speakers These models use 2pcs of 2-CH BTL type audio amplifier AN7522. One piece is for main audio, and one more piece is for the sub-woofer. Amplifier +B voltage and the input circuits are slightly different by model. ( Refer to table 1).
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
Table 1: Amp supply voltage(+B)
LT-22XX LT-30XX AMPVCC(for main) 7.5V 9V
SAMPVCC(for Sub Woofer) 9V 12V
Volume control is controlled by fading Volume1 /Volume2 DC signal to the amplifier Pin(#9). Although the audio signals outputted from amplifier is sent to the SPEAKER, between the amplifier and SPEAKER is a headphone terminal. If a headphone is connected, the audio signal to SPEAKER will be interrupted and the audio signal will be sent to the headphone terminal.
3. Power circuit
Refer the LT-2220 / LT-3020 Power circuit block for the following.
The LT-2220 power supply is supplied from an AC adapter. The LT-3020 power supply is supplied from a power supply board. The LT-2220 has one connector for the inverter connection, the LT-3020 has two connectors. Except for that, the circuit composition of the power supply is almost the same. There are power supplies that are “always on” and “ON/OFF” with a control signal, as follows.
Power source
signal
20V 20 always on - “22 only 24V 24 ON/OFF ON_24V “30 only
8.5V 8.5 always on - “30 only
A12V 12 ON/OFF Psave2
A9V 9 ON/OFF Psave2 A8V 8 always on -
AMPVCC “30 : 9
SAMPVCC “30 : 12
S5V 5 always on -
SW5V 5 ON/OFF Psave1
A30V 30 ON/OFF Psave1
S3.3V 3.3 always on -
4.5V 4.5 always on - D3.3V 3.3 ON/OFF Psave1 A3.3V 3.3 ON/OFF Psave1
AD3.3V 3.3 always on -
D1.9V 1.9 ON/OFF Psave1 D2.5V 2.5 ON/OFF Psave1
1.5V 1.5 ON/OFF Psave1
Voltage [V ] “always on” or
“ON/OFF”
ON/OFF Psave3
“22 :7.5
ON/OFF Psave3
“22 :9
Control
signal
Note
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
BLOCK DIAGRAM of LT-22XX/LT-30XX(except Power)
SW LR2
PC_DDC
CTL
MUXSEL
VRF
Y for CCD2
3.3V IIC
IC100
AV SW
CXA2069
9V
add=92H
IC202
SYNC SEP
LM1881M
CCDMAIN
CCDSUB
CVBS/Y/C
5V IIC
SW LR1
TV MPX
AD9883A
3.3V IIC
18.432 MHz
IC710
MSP3440 Processor
add=80H
IC2A3
A/D(PC)
3.3V
add=98H
DVI H,V
IC205
AD9883A
add=9AH
IC601
UPD64011
DECODER
3.3V/1.5V add=B8H
24.576 MHz
Audio
8V 5V
SYNC
A/D
3.3V
3D-YC
IC601
16M
SDRAM
IC203
74LV157
H,V,CLK
YUV/R,G,B
24bit
3.3V IIC
PWB-
SET(SUB)
5V IIC
RESETQ
MAIN
L/R Out
Sub
Woofer
Out
IC712
AMP
AN7522
IC711
AMP
AN7522
SW
3.3V
H,V,DE,CLK
Field
CCIR601
16bit
RSTB
H,V,CLK
R,G,B
COMPOSIT_H2
14.318 MHz
L
R
Woofer
SYNC
IC500
gm6015
3D-I/P
PiP/PoP
3.3V
2.5V
IC501
64M
SDRAM
PC_H,V
CCD_Main
CCD_Sub
MUXSEL VRF/CTL
Psave 1/2/3
Reset/RSB
RESETQ
5V IIC TU IIC
3.3V IIC
PC_DDC
DDC_EEP
IC2A1
3.3V
H,V,DE,CLK
Y,Cb/
Pb,Cr/Pr
24bit
5BUS
IC305 OPAMP LMV324
Volume 1/2
BUS
5V
Port 0
IC400
URANUS
SCALER
PiP/PoP
3.3V
1.9V
Port 1
IC401
16M
SDRAM
SW LED
H,V,DE,CLK
R,G,B
IC490
20MHz
IC4A0
M66617FP
OSD MIX
ENMA?
3.3V
2.5V
BUS
H,V,CLK/RST
IC300
CPU M306V7
5V
3.3V
16MHz
64K EEP
IC8X0
RS322
ADM3311
3.3V
MonLink
IC303
3.3V
OSD-MIX
3.3V
H,V,DE,CLK
IC4A1
LVDS
3.3V
R,G,B
LCD Panel
PDWN
RESET M51957
IC301
IC2A2
74LCX14
3.3V
IC204
SW
BA7657
5V
Analog RGB
DVI H,V
RESET/PSAVE1
TU1A0
TUNER
30V
5V
add=C0H
Conponent
AUDIO
J201
DVI AUDIO
J102
PC AUDIO
J103
PC
Component1
DVI HD
E-DDC
J2A1
(Dsub15)
/2
J201
(J2J0)
IC2J2
3.3V
PC_H,V
Analog RGB
Conponent 1
(VIDEO)
Conponent 2
(VIDEO)
IC2J1
SiI907B
TMDS HDCP
3.3V
TU IIC
TV
MPX
Component 1 L/R Component 2 L/R
L/R
L/R
PC_H,V
YPbPr/ YCbCr
IC201
SW
SM5301
5V
CVBS/SY/SC
IC702
MM1566AF
BUFFER
Input 1
J703
Input 1
J704
Input 2
J701
Input 2
J702
CVBS
AUDIO L/R S-Video
CVBS
AUDIO L/R S-Video
IC701
AV SW
CXA2089
9V
add=90H
Page 29
5V IIC
Audio
Out
J705
Head
Phone
J706
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
POWER CIRCUIT BLOCK DIAGRAM FOR LT-22XX / LT30XX
20V "22 Only 5A
Adaptor SEB150P2
AC-Adaptor "22
Only
24V (1) "30 Only 3A "22: 3A "30: 2.8A (2.5A) INVERTER
PWB-POWER (2.7A) TO INVERTER
ON_24V
24V (2) "30 Only 3.8A "30: 2.8A (2.5A)
PWB-POWER (3.5A) TO INVERTER
ON_24V
JP JP
"22 "22 OnlyOnly
PWB-SET(SUB)
INVERTER "30 Only
LCD PANEL
A12V IC860 "22: 0.8A A12V
PQ1CY1032Z TO MAIN
POWER-UNIT
PSAVE2
"30 Only
AMPVCC IC870 "22: 7.5V 1.2A IC712 MAIN AMP AN7522F
PQ1CY1032Z
PSAVE3
SAMPVCCIC880 "22: 9V 0.6A IC711 SUB AMP AN7522F
PQ1CY1032Z
8.5V "30 Only 1.2A S5V IC850 0.6A S5V IC300 MPU M306V7
PWB-POWER PQ1CY1032Z TO MAIN IC2A1 EEPROM 24LC21TSW
: Power source is IC305 LMV324MTX always ON A5V IC201 AV-SW SM5301A
DEVICE IC
: use several TO MAIN IC204 AV-SW BA7657F power sources TC1A0 TUNER 115VF045AR
PSAVE3
"30: 0.9A
A9V IC8K0 0.15A IC701 AV-SW CXA2089
BA178M09FP
TO MAIN TC1A0 TUNER 115VF045AR
"22 Only A8V IC8J0 0.015A IC710 MPX MSP3440G
BA178M08FP
"30 Only
"30: 9V 1.4A
"30: 12V 0.95A
IC710 MPX MSP3440G
SW5V IC8E0 0.4A IC702 MM 1556AF
CPH6311
PSAVE1
S3.3V IC8F0 0.05A IC8X0 ADM3311EARS
SI3033LSA
TO MAIN IC303 EEPROM 24LC64T-I
A9V IC100 AV-SW CXA2069
PWB-MAIN
IC202 LM1881MX
A30V IC180 0.005A TC1A0 TUNER 115VF045AR
LA7995M
S3.3V IC301 RESET IC M51957
IC300 MPU M306V7
IC2A2 74LCX14
4.5V IC840 1.2A D3.3V IC8N0 0.5A D3.3V IC400 Scaler Uranus M66473FP
PQ1CY1032Z SI3033LSA TO MAIN IC500 3D I/P gm6015
D2.5V IC830 0.8A D2.5V IC500 3D I/P gm6015
PQ1CY1032Z TO MAIN IC4A0 ENMA2 M66617FP
PSAVE1
PSAVE1 IC501 DRAM64 K4S643232F-TC60
D1.9V IC402 0.27A IC400 Scaler Uranus M66473FP
SI3018KS
PSAVE1
A3.3V IC8M0 0.04A A3.3V IC601 3D Y/C UPD64011
SI3033LSA TO MAIN IC203 HD74LV157
PSAVE1
AD3.3V IC8Y0 0.24A AD3.3V IC205 A/D AD9883
SI3033LSA TO MAIN IC2A3 A/D AD9883
1.5V IC600 0.06A IC601 3D Y/C UPD64011
SI3012KS
IC401 DRAM16 IC42S1600-7T *2 IC602 DRAM16 IC42S1600-7T *2 IC601 3D Y/C UPD64011 IC4A0 ENMA M66617FP IC4A1 LVDS THC63LVDM83R IC4A4 74LCX74MTCX IC4A2 74LCX04MTCX IC490 DSO751SV 20MHz
IC2J1 DVI SiI907B
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
PC& Video BLOCK DIAGRAM for LT-22XX/LT-30XX
IC202
J2A1
(Dsub15)
J201
PC_H,V
Analog RGB
YpbPr/
YCbCr
Conponent 1
Conponent 2
PC
Component1/2
LINK
MONITOR-
TMDS
(J2J0)
TU1A0
TUNER
30V
5V
add=C0H
TV
Vcc=S3.3V
IC2A2
74LCX14
Vcc=A5V
IC204
BA7657
AV-SW
Vcc=AD3.3V
IC2J1
SiI907B
- TMDS-Rx
- HDCP Dec
- DAC
CTL
YPbPr/ YCbCr
Analog
RGB
PC_H,V
Vcc=A5V
IC201
AV-SW
-LPF
DVI HV
Input 1
J703
CVBS
Vcc=A9V
5V IIC
Input 1
J704
Input 2
J701
S-Video
CVBS
AV SW)
9V
CXA2089
IC701(
Vcc=A5V
IC702
BUFFER
MM1566AF
CVBS/
SVideo
Input 2
J702
S-Video
SYNC SEP
LM1881M
VRF MUXSEL
YPbPr/
RGB
Vcc=A9V
Y for CCD2
CXA2069 )
9V
IC100
AV SW(
CCDMAIN CCDSUB
DVI H/V
Composite Sync
Vcc=AD3.3V
IC2A3
AD9883A
ADC(for PC)
Black level / contrast
control for PC
IC205
AD9883A
ADC(for COMP/DVI) Black level / contrast
control for
Component / DVI
Vcc=A3.3V/A1.5V/D1.5
-3D-YC
-DECODER
-Black level / contrast
LPF
CVBS/
SVideo
control for TV /VIDEO input
Vcc=A3.3V
IC203
sync SW 74LV157
H/V/CLK
RGB
3.3V IIC
3.3V IIC
H/V/CLK
YUV/RGB
480i/480p/720p/1080i
IC601
uPD64011
24.576MHz
(M602V7)
24
IC601
To
IC300
Composite H
24
3.3V IIC
H/V/CLK/FIELD
YUV
16
480i
Vcc=D3.3V
16M SDRAM
HS_out
VGA/SVGA/XGA/WXGA
Vcc=D3.3V/D2.5VVcc=AD3.3V
Composite H2
IC500
gm6015
- Motion adaptive De- interlacer
- PiP/PoP control for
AV input Combination
- Color / Tint adjustment
-3D Noise Reduction
-Scaler for AV Input
-Sync Separation for
Composite Sync
CPU Bus
14.318MHz
IC501
64M SDRAM
H/V/CLK
Field
YCbCr/
YPbPr
24
WXGA60
Vcc=D3.3V
Digital Circuit
Vcc=D3.3V/1.9V
IC400
M66473FP
(URANUS)
- Scaler for PC
- PiP/PoP control for PC and AV combination
- Picture Enhancement
- Auto Setup
- Colorsync adjustment
- Sync Separation for component CS
- Gamma
Port1 Port0
IC401
CPU Bus
IC490
20MHz
16M SDRAM
H/V/CLK
RGB
WXGA60
Vcc=D3.3V
24
Vcc=D3.3V/D2.5V
IC4A0
M66617FP
(ENMA II)
- OSD MIX
between
OSD Mix
CPU Bus
IC300
H/V/CLK
RGB
24
WXGA60
Vcc=D3.3V
IC4A1 LVDS Tx
Analog
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
AUDIO Bloc k Diagram for LT-22XX/LT-30XX
PWB-MAIN
Component 1
Audio
(J201)
Component 2
Audio
(J201)
DVI-AUDIO
(J102)
PC-AUDIO
(J103)
IC710 MSP3440g
IC100
AV-SW
CXA2069
PWB-SET(SUB)
Main Audio
Processor
Core
ADC
-De modulator
-Volume
-Tone control
-Surround
-L/R-Mix (for Woofer out)
- or others
SAMPVCC
DAC
AMPVCC
MAIN Out
r
e
f
o
W
o
MAIN_L_P
IC712
AN7522
t
u
o
IC711
AN7522
MAIN_L_N
MAIN_R_P MAIN_R_N
SUB_P
SUB_N
Speaker -L
Speaker -R
Speaker -
Woofer
Input
source
Select
J706
Head
Phone
Jack
VIDEO 1
VIDEO 2
IC701
AV-SW
CXA2089
ADC
SUB
auduo
processor
-Volume
DAC
A
u
d
o
i
n
i
l
e
o
p
u
t
u
t
J705
MPX
from TU1A0
SIF output
Volume1
from
IC300
#24
3.3V
0V
+
-
IC305
+
-
Volume control for MAIN
Amp
0.02Vdc to 1.15Vdc
Volume control for SUB Amp
PWB-MAIN
Table: Supplied voltage to Amp +B
LT-2220 LT-3020
AMPVCC
SAMPVCC
7.5V 9V
9V
12V
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
TEST POINT LOCATIONS AND DESCRIPTIONS
Test points, locations and descriptions are shown below.
(1) PWB-SET (SUB)
Test Point Location Description Note 1 Pin1 of J800 J801(Fuse-clip) 20Vdc from AC-ADAPTOR 22inches only 2 F800 J802(Fuse-clip) 20Vdc behind the fuse F800 22inches only 3 INV-SW Pin12 of J821 Used to control inverter ON/OFF. (0V :
4 BRIGHT Pin14 of J821 Used for brightness control of
5 24V Pin4, 6 of J810 24Vdc from Power-unit. 30inches only 6 8.5V Pin2 of J810 8.5Vdc from Power-unit. 30inches only 7 IN_24V Pin8 of J810 3.3Vdc.
8 Psave1 Pin5 of J712 ON/OFF control signal of D3.3V, A3.3A. 9 A8V (+) of C733 8Vdc. 10 AMPVCC Pin1 of IC711 7~9Vdc. 11 SAMPVCC Pin1 of IC712 8~12Vdc. 12 Psave2 Pin6 of J712 ON/OFF control signal of A9V, A8V 13 Psave3 Pin7 of J712 ON/OFF control signal of AMPVCC, 14 MPX Pin8 of J710 Analog video signal from TV input. 15 SW_L Pin10 of J710 Audio L signal for PC or Monitorlink or 16 SW_R Pin12 of J710 Audio R signal for PC or Monitorlink or 17 5V_SDA 5 of J711 Serial port data I/O for IC of 5V power 18 5V_SCL 6 of J711 Serial port data clock for IC of 5V 19 MPX_RST Pin10 of J711 Reset signal of IC710. 20 F880 F880 7~9Vdc. 21 F870 F870 8~12Vdc.
OFF , 5Vdc : ON) inverter. (PWM control)
(Max : 5Vdc, Min : thin pulse)
Used for ON/OFF control of the power supply from the POWER-UNIT.
(0V : OFF , 3.3Vdc : ON) Used to supply power to IC710. Used to supply power to IC711. Used to supply power to IC712. A5A. (0V : OFF , 3.3Vdc : ON) SAMPVCC. (0V : OFF , 3.3Vdc : ON) Voltage level is 1.0Vp-p (Typical) Component input. Component input. supply. power supply. (0V : reset) Power supply fuse for IC711. Power supply fuse for IC712.
30inches only
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
PWB-SET(SUB)
J8T1
9
(+) of C733
XH3
14
J8T0
1
5 : 5V_SDA 6 : 5V_SCL
17 18
10 : MPX_RST
19
R
L
RL
Y
J706
HP
J705
J703
IC701
AV-SW
Line Out
VIDEO2/ AUDIO2
DC
-DC
IC860
IC702
LPF
DC
-DC
IC880
F880
IC8X0
RS-232C
IC710
SOUND-
PRO
CESSOR
XH3
S2
J704
DC
-DC
IC850
20
RLY
J701
VIDEO1/ AUDIO1
DC
-DC
IC840
S1
J702
J8X0
RS232C
J800
DC- IN
J801
F800
1
VH-8P)
(
J810
1
8
J802
2
2 : 8.5V 4 : 24V 6 : 24V
1
12 : INV-SW 14 : BRIGHT
5 6
16
DC
-DC
IC870
F870
21
DC
-DC
IC830
J820(PH-15)J821(PH-16)
3 4
Radiator
Radiator
12
IC712(IC-AMP)
1
1 of IC712
11
12
IC711(IC-AMP)
1
1 of IC711
10
J715(PH6)
13
12
10
1
7 8
12
J712(PH-13) J711(PH-14)
4 : ON_24V 5 : Psave1 6 : Psave2 7 : Psave3
13
1
J710(PH-12)
8 : MPX
10 : SW_L
12 : SW_R
14
15
16
1
J8A0(XH10)
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
(2) PWB-MAIN
Test Point Location Description Note 1 S5V Pin12 of J303 5Vdc(always on ).
2 S3.3V Pin13 of J303 3.3Vdc(always on ).
3 D3.3V Pin7 of J190 3.3Vdc.
4 A5V Pin1 of J190 5Vdc.
5 A3.3V Pin5 of J190 3.3Vdc.
6 D2.5V Pin8 of J190 2.5Vdc. 7 AD3.3V Pin6 of J190 3.3Vdc.
Power supply voltage for MCU, etc.
Power supply voltage for MCU, etc.
Power supply for IC300, IC4A0, IC4A1 etc.
Power supply for IC204, IC201 etc.
Power supply for IC203, etc.
Power supply for IC500.
Power supply for IC2A3, IC205, IC2J1, 8 D1.9V L400 1.9Vdc. 9 Digital_G7 14 of IC4A1 3.3Vdc.
10 QHS
-27 of IC4A1
11 QVS
-28 of IC4A1
12 QCLK
-31 of IC4A1
13 QDE
R4H6 Horizontal sync signal to LCD panel R4H5 Vertical sync signal to LCD panel R4H3 Clock signal to LCD panel R4H4 Data_Enable signal to LCD panel
etc.
Power supply for IC500.
MSB of green digital video signal to
LCD panel.
-30 of IC4A1
14 A9V 10 of J190 9Vdc. 15 30V Pin7 of IC180 30Vdc. 16 A1.5V,
D1.5V
Pin3 of IC600 1.5Vdc.
Power supply for IC100.
Power supply for TU1A0.
Power supply for IC601. 17 TU_SDA Pin31 of IC300 Serial port data I/O for TU1A0. 18 TU_SCL Pin28 of IC300 Serial port data clock forTU1A0. 19 S3.3V(RMC) Pin1 of J301 3.3Vdc(always on ).
20 RMC Pin2 of J301 Data signal from IR receiver.
Power supply for IR receiver and front
switches, etc.
This data is sent to MCU. 21 KEY1 Pin4 of J301 Data signal from front switch.
22 KEY2 Pin5 of J301 Data signal from front switch. 23 V_OUT Pin2 of J110 Analog video signal from VIDEO 1&2
This data is sent to MCU.
This data is sent to MCU.
inputs. (Composite video) 24 SY_OUT Pin4 of J110 Analog video signal from VIDEO 1&2
inputs. (S-video)
Page 35
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
PWB-MAIN
12 : S5V 13 : S3.3V
IC4A308IC4A4
1 2
J300(PH-13)J303(PH-14)
IC305 LM324
IC4A2
04
74
1211
R4H3
R4H5
R4H6
R4H4
1310
IC4A0
IC-OSD
L400 (D1.9V)
3018
IC402
IC490
20M
J4A0
IC4A1
LVDS- Tx
14 of IC4A1
8
IC400
GRAPHIC
& SCALER
IC301
31 of IC300
9
IC401
SDRAM16
RST
17
18
J302
MCUWR
16MHz
28 of IC300
IC300
MCU
IC201
VIDEO-SW
IC303
IC204
EEP
PC-AUDIO
VIDEO-SW
J103
J101
J102
RL
AUDIO(1and2)
COMPONENT-
PrPbY
J201
COMPONENT(1and2)
-LINK
L/ R
-AUDIO
MONITOR
IC501
SDRAM64
IC601
DECODER
with 3D-Y/ C
IC602
SDRAM16
1 9
J301(PH-9)
3D- I/P
gm6015
24.576M
IC100
AV-SW
IC500
14.318M
IC600
3012
J110(PH-12)
IC205
A/ D- C
16
3 of IC600
IC180
LA7995
15
7 of IC180
J190(XH-10)
IC2A3
A/ D-C
IC2J1
TMDS-Rx
EEP
1881
IC202
IC2A1
157
IC203
14
IC2A2
TUNER
1 20
J180
J2J0
MONITOR- LINK
EEP
IC2J2
J2A1
PC(D-sub)
1 : S3.3V(RMC)
2 : RMC 4 : KEY1 5 : KEY2
19 21
20 22
2 : V_OUT 4 : SY_OUT
23 24
1 : A5V 5 : A3.3V 6 : AD3.3V 7 : D3.3V 8 : D2.5V
10 : A9V
4
5
7
3
6
14
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
1. Power failure
1.1 In case of LT-22XX
(1)POWER is turned off.
Connect the Power plug and turn on the main Power switch (Front switch or remote control).
Is the POWER LED lit? Is the power plug connected
· To “Flashing in green”(2)
· To “Flashing in amber”
YES
(3)
to the wall outlet correctly?
YES
Is all harness connected correctly?
YES
Is the 20V DC available before the fuse F800? (Observing point : J801) * Voltage range of 20V :18~21V
YES
Is 20V DC available behind the fuse F800?
NO NO
Poor power plug connection.
NO
All harness connects correctly.
NO
The AC-ADAPTOR is out of order.
NO
Fuse F800 have blown out. If
the fuse are replaced and it (Observing point : J802) * Voltage range of 20V :18~21V
YES
Is the S5V and S3.3V, AD3.3V output available at Pin12(S5V) and Pin13 (S3.3V) of J303 and at Pin6 of J190 (PH connector)?
CN Pin No. S5V J303 12 5Vdc S3.3V J303 13 3.3Vdc AD3.3V J190 6 3.3Vdc
IC300 and peripheral circuits are out of order.(PWB-MAIN)
YES
Voltage
blows out again, the AC-
ADAPTOR is out of order.
NO
Power supply circuit which generates S5V and S3V and AD3.3V in the PWB-SUB(SET) is out of order.
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
(2)Flashing in green.
Is the back-light on?
NO
Is the following harness connected?
-Between PWB-SUB(SET) and INVERTER (J821-INVERTER)
-Between back-lights and INVERTER
YES Is the INV-SW output 5V-level at Pin12 of the J821 connector? (PH connector)
YES Is the BRIGHT output about 5V level at Pin14 of the J821 connector? (PH connector)
NO
Poor harness connection.
NO
IC300 and peripheral circuits are out of order.(PWB-MAIN)
NO
IC300 and peripheral circuits are out of order.(PWB-MAIN)
Skip to “2. No picture
displayed and picture errors.”
(3)Flashing in Amber.
If POWER switch is pushed, does LED become green?
Skip to the above-mentioned
YES
NO
YES
YES Inverter or back-light of LCD- panel are out of order.
IC300 and peripheral circuits are out of order.(PWB-MAIN)
“(2) Flashing in green” .
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
1.2 In case of LT-30XX
(1)POWER is turned off.
Connect the Power plug and turn on the main Power switch (Front switch or remote switch).
Is the POWER LED lit? Is the power plug connected
· To “Flashing in green”(2)
· To “Flashing in amber”
YES
(3)
to the wall outlet correctly?
YES
Is all harness connected correctly?
YES
Is the 24V and 8.5V output available at Pin2(8.5V) and Pins 4, 6(24V) of the J810 connector? (VH connector)?
Pin No. Voltage
8.5V 2 8.5Vdc 24V 4, 6 24Vdc
* Voltage range of 8.5V :8.1~8.8V
NO NO
NO
Poor power plug connection.
All harness connects correctly.
Is the IN_24V output 3Vdc at Pin8(24V) of the J810 connector? (VH connector)
If not outputting, IC300 or its Periphral circuits is out of order.(PWB-MAIN) If outputting, Power unit is out of order.
* Voltage range of 24V :22~26V
Is the S5V and S3.3V, AD3.3V output available at Pin12(S5V) and Pin13 (S3.3V) of J303 and at Pin6 of J190 (PH connector)?
CN Pin No. S5V J303 12 5Vdc S3.3V J303 13 3.3Vdc AD3.3V J190 6 3.3Vdc
IC300 and peripheral circuits are out of order.(PWB-MAIN)
YES
YES
Voltage
NO
Power supply circuit which generates S5V and S3V and AD3.3V in the PWB-SUB(SET) is out of order.
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
(2)Flashing in green.
Is the back-light on?
YES
NO
Is the following two harness connected?
-Between PWB-SUB(SET) and INVERTER (J821-INVERTER) (J820-INVERTER)
-Between back-lights and INVERTER
YES
Is the INV-SW output 5V-level at each Pin12 of the J821 and J820 connector? (PH connector)
YES
Is the BRIGHT output about 12V level at each Pin14 of the J821
NO
Poor harness connection.
NO
IC300 and peripheral circuits are out of order.(PWB-MAIN)
NO
IC300 and peripheral circuits are out of order.(PWB-MAIN)
Skip to “2. No picture
displayed and picture errors.”
(3)Flashing in Amber.
If POWER switch is pushed, does LED become green?
and J820 connector? (PH connector) * Voltage range : 10~14V
YES
Inverter or back-light of LCD- panel are out of order.
NO
IC300 and peripheral circuits are out of order.(PWB-MAIN)
Skip to the above-mentioned “(2) Flashing in green” .
YES
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
2. No picture displayed and picture errors (It applies both LT-30XX and LT -22XX)
Note ) It applies when there is no screen display or an unusual screen is outputted, although power supply is turned on and the back light is turned on. Before checking, perform the initial setup. (Input before the initial setup is channel 3 of TV.)
* Input source changes in following order with DEVICE UP button of remote control or
DEVICE button of front switch.
2-1. No picture displayed and picture errors of PC signal.
Enter an input of WXGA(60Hz) gray scale in D-sub connector(J2A1), and select PC INPUT. (Push the device UP button 5 times.) And then, perform AV reset by front switch. The video level inputs above 0.7Vp-p.
Is all harness connected correctly? (especially between PWB-MAIN and LCD PANEL (J4A0-LCD))
Is OSD available? Problem is in IC300 or IC4A0 or IC4A1
TV Component1 Component2 Input1 Input2
DVI PC
0.7Vp-p
NO
YES
NO
(and peripheral circuits). Are the
YES
specified voltages available at the connectors below?
CN S5V J303 12 5Vdc
S3.3V J303 13 3.3Vdc D3.3V J190 7 3.3Vdc Psave1* J712 5 3.3Vdc
* control signal of D3.3V
2-1-1 (P*)
Poor harness connection or defective cable.
Pin No.
Name
YES
2-1-2 (P*)
Voltage
NO
Problem is in the following circuit (and peripheral circuits) .
Voltage with
problem
S5V SET(SUB) S3.3V SET(SUB) D3.3V SET(SUB)
Psave1 MAIN
PWB
including
the circuit
in problem
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
Problem is in IC2A3 or IC400 (and peripheral circuits). Are the specified voltages available at the connectors below?
CN AD3.3V J190 6 3.3Vdc
D1.9V L400 - 1.9Vdc
IC2A3 or IC400 (and peripheral circuits) are out of order.(PWB-MAIN)
Name
YES
Is the digital video signal available at pin 14(G_7) of IC4A1, and control signals of 3Vp-p available at pins 27(HS : R4H6) and 28(VS : R4H5) and 31(CLK : R4H3) and 30(DE : R4H4) of IC4A1 ?
14 of IC4A1 (MSB of Green)
27 of IC4A1
(f=48KHz)
28 of IC4A1 (f=60Hz)
31 of IC4A1 (f=70MHz) 3Vp-p
30 of IC4A1
(f=48KHz)
LCD-module or IC4A1(PWB-MAIN) are out of order.
Pin No.
Voltage
2-1-2 (P*) 2-1-1 (P*)
H
V
YES
NO
When the shown voltage is in problem, PWB supply circuit(and peripheral circuits) is the following.
NO
3Vp-p
3Vp-p
3Vp-p
3Vp-p
including the power
Voltage with
problem
AD3.3V SET(SUB)
D1.9V MAIN
PWB including
the circuit in
problem
IC300 or IC4A0 (and peripheral circuits) are out of order. (PWB- MAIN)
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
2-2. No picture displayed and picture errors of Component signal.
Enter an input of D1(480i) gray scale in J201 connector, and select COMPONENT1 (or2) INPUT. (Push the device UP button once.: twice in the case of COMPONENT2) And then, perform AV reset by front switch. The video level inputs about 1.0Vp-p.
Is all harness connected correctly? (especially between PWB-MAIN and LCD PANEL (J4A0-LCD))
Is OSD available?
YES
YES
NO
Problem is in IC300 or IC4A0 or IC4A1 (and peripheral circuits). Are the specified voltages available at the connectors below?
CN S5V J303 12 5Vdc
S3.3V J303 13 3.3Vdc D3.3V J190 7 3.3Vdc Psave1* J712 5 3.3Vdc
*control signal of D3.3V
Is the digital video signal available at pin 14(G_7) of IC4A1, and control signals of 3Vp-p available at pins 27(HS : R4H6) and 28(VS : R4H5) and 31(CLK : R4H3) and 30(DE : R4H4) of IC4A1 ?
14 of IC4A1 (MSB of Green)
27 of IC4A1
(f=48KHz)
28 of IC4A1 (f=60Hz)
31 of IC4A1 (f=70MHz) 3Vp-p
30 of IC4A1
(f=48KHz)
NO
Name
Poor harness connection or defective cable.
H
V
Pin No.
YES
Voltage
3Vp-p
3Vp-p
3Vp-p
3Vp-p
1.0Vp-p
NO
Problem is in the following circuit (and peripheral circuits) .
Voltage with
problem
S5V SET(SUB) S3.3V SET(SUB) D3.3V SET(SUB)
Psave1 MAIN
NO
IC300 or IC4A0 (and peripheral circuits) are out of order. (PWB- MAIN)
YES
LCD-module or IC4A1 (PWB-MAIN) are out of order.
PWB
including
the circuit
in problem
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
2-2-1(P*) 2-2-1 (P*)
Problem is in IC204 or IC201 or IC205 or IC500 or IC400 (and peripheral circuits). Are the specified voltages available at the connectors below?
CN
A5V J190 1 5Vdc
A3.3V J190 5 3.3Vdc D2.5V J190 8 2.5Vdc D1.9V L400 - 1.9Vdc
AD3.3V J190 6 3.3Vdc
IC204 or IC201 orIC205 or IC500 or IC400 (and peripheral circuits) are out of order.(PWB-MAIN)
Name
YES
Pin No.
Voltage
NO
When the shown voltage is in problem, PWB supply circuit(and peripheral circuits) is the following.
Voltage with
problem
A5V SET(SUB) A3.3V SET(SUB) D2.5V SET(SUB) D1.9V MAIN
AD3.3V SET(SUB)
including the power
PWB including
the circuit in
problem
2-3. No picture displayed and picture errors of DVI signal.
Enter an input of D2(480p) gray scale in J2J0 connector, and select DVI INPUT. (Push the device UP button 6 times) And then, perform AV reset by front switch. The video level inputs above 0.7Vp-p.
Is all harness connected correctly? (especially between PWB-MAIN and LCD PANEL (J4A0-LCD))
Is OSD available?
YES
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
NO
Poor harness connection or defective cable.
YES
NO
Problem is in IC300 or IC4A0 or IC4A1 (and peripheral circuits). Are the specified voltages available at the connectors below?
CN
Name S5V J303 12 5Vdc S3.3V J303 13 3.3Vdc D3.3V J190 7 3.3Vdc Psave1* J712 5 3.3Vdc
*control signal of D3.3V
Is the digital video signal available at pin 14(G_7) of IC4A1, and control signals of 3Vp-p available at pins 27(HS : R4H6) and 28(VS : R4H5) and 31(CLK : R4H3) and 30(DE : R4H4) of IC4A1 ?
14 of IC4A1 (MSB of Green)
27 of IC4A1
(f=48KHz)
28 of IC4A1 (f=60Hz)
31 of IC4A1 (f=70MHz) 3Vp-p
30 of IC4A1
YES
H
V
Pin No.
Voltage
3Vp-p
3Vp-p
3Vp-p
3Vp-p
0.7Vp-p
NO
Problem is in the following circuit (and peripheral circuits) .
Voltage with
problem
S5V SET(SUB) S3.3V SET(SUB) D3.3V SET(SUB)
Psave1 MAIN
NO
IC300 or IC4A0 (and peripheral circuits) are out of order. (PWB- MAIN)
YES
LCD-module or IC4A1 (PWB-MAIN) are out of order.
PWB
including
the circuit
in problem
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
2-3-1 (P*) 2-3-1 (P*)
Problem is in IC2J1 or IC201 or IC205 or IC500 or IC400 (and peripheral circuits). Are the specified voltages available at the connectors below?
CN
A5V J190 1 5Vdc
A3.3V J190 5 3.3Vdc D2.5V J190 8 2.5Vdc D1.9V L400 - 1.9Vdc
AD3.3V J190 6 3.3Vdc
IC2J1 or IC201 or IC205 or IC500 or IC400(and peripheral circuits) are out of order. (PWB-MAIN)
Name
YES
(f=48KHz)
Pin No.
Voltage
NO
When the shown voltage is in problem, PWB supply circuit(and peripheral circuits) is the following.
Voltage with
problem
A5V SET(SUB) A3.3V SET(SUB) D2.5V SET(SUB) D1.9V MAIN
AD3.3V SET(SUB)
including the power
PWB including
the circuit in
problem
2-4. No picture displayed and picture errors of VIDEO signal.
Enter an input of NTSC gray scale in J2J0 connector, and select VIDEO1 (or 2) INPUT. (Push the device UP button 3 times : 4 times in case of VIDEO2) And then, perform AV reset by front switch. The video level inputs about 1.0Vp-p.
Is all harness connected correctly? (especially between PWB-MAIN and LCD PANEL (J4A0-LCD))
Is OSD available?
YES
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
NO
Poor harness connection or defective cable.
YES
NO
Problem is in IC300 or IC4A0 or IC4A1 (and peripheral circuits). Are the specified voltages available at the connectors below?
CN
Name S5V J303 12 5Vdc S3.3V J303 13 3.3Vdc D3.3V J190 7 3.3Vdc Psave1* J712 5 3.3Vdc
*control signal of D3.3V
Is the digital video signal available at pin 14(G_7) of IC4A1, and control signals of 3Vp-p available at pins 27(HS : R4H6) and 28(VS : R4H5) and 31(CLK : R4H3) and 30(DE : R4H4) of IC4A1 ?
14 of IC4A1 (MSB of Green)
27 of IC4A1
(f=48KHz)
28 of IC4A1 (f=60Hz)
31 of IC4A1 (f=70MHz) 3Vp-p
30 of IC4A1
YES
H
V
Pin No.
Voltage
3Vp-p
3Vp-p
3Vp-p
3Vp-p
1.0Vp-p
NO
Problem is in the following circuit (and peripheral circuits) .
Voltage with
problem
S5V SET(SUB) S3.3V SET(SUB) D3.3V SET(SUB)
Psave1 MAIN
IC300 or IC4A0 (and peripheral circuits) are out of order. (PWB- MAIN)
YES
LCD-module or IC4A1 (PWB-MAIN) are out of order.
PWB
including
the circuit
in problem
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
2-4-1 (P*) 2-4-1 (P*)
Problem is in IC100 or IC601 or IC500 or IC400 (and peripheral circuits). Are the specified voltages available at the connectors below?
CN
AD3.3V J190 6 3.3Vdc
Is the signal of 1.0Vp-p available at pin 2(V_out) of J110,or pin 4 (SY_out) of J110?
Pin2 of J110 Pin4 of J110
IC100 or IC601 or IC500 or IC400(and peripheral circuits) are out of order.(PWB-MAIN)
YES
Name
A9V J190 10 9Vdc
A1.5V IC600 3 1.5Vdc
D1.5V IC600 3 1.5Vdc
A3.3V J190 5 3.3Vdc D2.5V J190 8 2.5Vdc D1.9V L400 - 1.9Vdc
YES
YES
(f=48KHz)
Pin No.
Voltage
NO
When the shown voltage is in problem, PWB i supply circuit (and peripheral circuits) is the following.
1.0Vp-p
ncluding the power
Voltage
with
problem
A9V SET(SUB) A1.5V MAIN D1.5V MAIN A3.3V SET(SUB) D2.5V SET(SUB) D1.9V MAIN
AD3.3V SET(SUB)
NO
IC701 or IC702 (PWB- SET(SUB)) are out of order.
PWB including
the circuit in
problem
2-5. No picture displayed and picture errors of TV signal.
Enter an input of NTSC gray scale in TU1A0 (TUNER), and select TV INPUT. (It may not push the device button after initial setup. Adjust the channel of TV with the channel of a signal source.) And then, perform AV reset by front switch.
Is all harness connected correctly? (especially between PWB-MAIN and LCD PANEL (J4A0-LCD))
Is OSD available?
YES
YES
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
NO
Poor harness connection or defective cable.
NO
Problem is in IC300 or IC4A0 or IC4A1 (and peripheral circuits). Are the specified voltages available at the connectors below?
CN
Name S5V J303 12 5Vdc S3.3V J303 13 3.3Vdc D3.3V J190 7 3.3Vdc Psave1* J712 5 3.3Vdc
Is the digital video signal available at pin 14(G_7) of IC4A1, and control signals of 3Vp-p available at pins 27(HS : R4H6) and 28(VS : R4H5) and 31(CLK : R4H3) and 30(DE : R4H4) of IC4A1 ?
14 of IC4A1 (MSB of Green)
27 of IC4A1
(f=48KHz)
28 of IC4A1 (f=60Hz)
31 of IC4A1 (f=70MHz) 3Vp-p
30 of IC4A1
(f=48KHz)
YES
H
V
Pin No.
Voltage
3Vp-p
3Vp-p
3Vp-p
1.0Vp-p
NO
Problem is in the following circuit (and peripheral circuits) .
Voltage with
problem
S5V SET(SUB) S3.3V SET(SUB) D3.3V SET(SUB)
Psave1 MAIN
IC300 or IC4A0 (and peripheral circuits) are out of order. (PWB- MAIN)
YES
LCD-module or IC4A1 (PWB-MAIN) are out of order.
PWB
including
the circuit
in problem
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
2-5-1 (P*) 2-5-1 (P*)
Problem is in IC100 or IC601 or IC500 or IC400 (and peripheral circuits). Are the specified voltages available at the connectors below?
CN
30V IC180 7 30Vdc
A9V J190 10 9Vdc
A1.5V IC600 3 1.5Vdc
D1.5V IC600 3 1.5Vdc
A3.3V J190 5 3.3Vdc D2.5V J190 8 2.5Vdc D1.9V L400 - 1.9Vdc
AD3.3V J190 6 3.3Vdc
TU1A0 or IC100 or IC601 or IC500 or IC400 (and peripheral circuits) are out of order. (PWB-MAIN)
Name
YES
Pin No.
Voltage
NO
When the shown voltage is in problem, PWB supply circuit (and peripheral circuits) is the following.
3Vp-p
including the power
Voltage with
problem
30V MAIN
A9V SET(SUB) A1.5V MAIN D1.5V MAIN A3.3V SET(SUB) D2.5V SET(SUB) D1.9V MAIN
AD3.3V SET(SUB)
PWB including
the circuit in
problem
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
3. No audio output generated.(It applies both LT-30XX and LT-22XX)
Notes) This model is enabled to set up an audio input terminal for each video input terminal. No audio output is available unless the input terminal of displayed pictures (example:VIDEO1) coincides with that of audio (example:PC). Therefore, analysis for troubleshooting should be carried out after the displayed video input terminal (example:VIDEO1) has been made to coincide with the input terminal according to the instruction manual.
Enter a signal input AUDIO in.
YES
NO
Raise volume level. And MUTE is turned off. Volume level is not 0. And MUTE is off.
Is “TV speakers” setting on?
YES
NO
“TV speakers” setting is on.
In case of TV input, is “Listen To:” setting set to Stereo or Mono?
YES
NO
“Listen To :” setting is set to Stereo or Mono.
Is voltage the same before and behind F870 and F880?
NO
It replaces the PWB-SET(SUB). (Fuse have blown out. )
YES
Are the specified voltages available at the pins below? (Power source check)
CN S5V J303 12 5Vdc
A5V J8A0 1 5Vdc A9V J8A0 10 9Vdc A8V C733 - 8Vdc AMPVCC IC711 1 7~9Vdc SAMPVCC IC712 1 8~12V
Psave2* J712 6 3Vdc Psave3** J712 7 3Vdc
*control signal of A9V, A8V, A5V ** control signal of AMPVCC, SAMPVCC
Name
YES
Pin No.
Voltage
dc
NO
Problem is in the following circuit (and peripheral circuits) .
Voltage with
problem
S5V SET(SUB) A5V SET(SUB) A9V SET(SUB) A8V SET(SUB)
AMPVCC SET(SUB)
SAMPVCC SET(SUB)
Psave2 MAIN Psave3 MAIN
PWB
including
the circuit
in problem
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
3-A (P*)
3-A (P*)
YES
Is the signal below available at pins 5, 6 of J711 (control signals of IC701 and IC710 and IC100 ) and 10 of J711 (control signals of IC710) and 28, 31 of IC300 (control signals of TU1A0) ?
5, 6 of J711, 28, 31 of IC300
v
YES
3Vp-p
3Vdc 10 of J711
NO
IC300 (and peripheral circuits) are out of order.(PWB-MAIN)
Is sound signal outputted correctly at the pins 10, 12 ,8 of J710 connector? ? It checks that a certain signal is outputting in the voltage range of 1V.
YES
IC701 and IC710 and IC711 and IC712 (and peripheral circuits) are out of order. (PWB-MAIN)
NO
IC100 (and peripheral circuits) are out of order.(PWB- SET(SUB))
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
4. Other faults.(It applies both LT-30XX and LT-22XX)
Notes) It considers the case where there are problems except 1, 2, 3.
4-1. Remote control is not effective.
After checking the polarity of batteries, has it loaded correctly?
Regarding as the slide switch at the top of the remote, does it set as “TV”?
Does it use within 20 feet?
It does not operate, even if it exchanges for new batteries.
When it pushes the remote switch, is the signal below available at pins 1, 2, of J301 (remote switch use) ?
2:
YES
YES
YES
YES
YES
3Vp-p
3Vdc 1
NO
NO
NO
NO
NO
Load the batteries, making sure the polarities (-) and (+) are correct.
It sets the slide switch as “TV”.
it uses within 20 feet.
It exchanges on new batteries.
Problem is in the following PWB (and peripheral circuits).
Pin with problem
2 of J301 CONT 1 of J301 MAIN
PWB
including
the circuit
in problem
Skip to “4-2 front switch is not effective”.
4-2. Front switch is not effective.
Is the following harness connected correctly?
· Between PWB-MAIN and PWB-CONT (J301-J0A1)
When it pushes the front switch, is the signal below available at pins 1, 4, 5 of J301 (remote control and front switch use) ?
4, 5 :
IC300 (and peripheral circuits) are out of order.(PWB-MAIN)
3Vp-p only when switch is not pushed. 0V only when switch is pushed.
YES
3Vdc 1
YES
NO
NO
Poor harness connection or defective cable.
Problem is in the following PWB (and peripheral circuits).
Pin with
problem
4, 5 of J301 CONT
1 of J301 MAIN
PWB
including
the circuit
in problem
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
LT-2240 PARTS LISTLT-2220 PARTS LIST
Part Number Description Part Number Description
7A930032 AC-ADAPTER (SEB150P2-20.0B) 7A930032 AC-ADAPTER (SEB150P2-20.0B) 25327981 BACK-UNIT (CABINET-BACK LT2220/2240) 25327981 BACK-UNIT (CABINET-BACK LT2220/2240) 08LA10AE BEZEL (INCLUDES INNER BEZEL & PLATE) 08LA10AE BEZEL (INCLUDES INNER BEZEL & PLATE) 25327921 BEZEL-INNER (LC-T2220) 25327973 BEZEL-UNIT (LC-T2240 GRY) 25327971 BEZEL-UNIT (LC-T2220 GRY) 79PQ6640 CORD-POWER (1.9M 2P BLK) 7A081023 CORD-POWER (1.9M 2P BLK) 25435861 COVER-LEFT 25435861 COVER-LEFT 25435911 COVER-REAR (CLEAR) 25435911 COVER-REAR (CLEAR) 25435851 COVER-RIGHT 25435851 COVER-RIGHT 25435881 COVER-TERMINAL LEFT 25435881 COVER-TERMINAL LEFT 25435871 COVER-TERMINAL RIGHT 25435871 COVER-TERMINAL RIGHT 3A684064 LCD (LC56XWC8V-02) T/A REQ 3A684043 LCD (AA220TA01) T/A REQUIRED 3A681009 LED (SML78420C) 3A681009 LED (SML78420C) PWB-CONTROL LT2240 PWB-CONTROL/LED T/A REQUIRED PWB-CONTROL LT2220 PW B-CONTROL/LED T/A REQUIRED 8BL63M15 PW B-MAIN (LT-2240) T/A REQUIRED 8BL61M12 PWB-MAIN (LT-2220) T/A REQUIRED PWB-SUB LT2240 PWB-SUB T/A REQUIRED PWB-SUB LT2220 PWB-SUB T/A REQUIRED PWB-TUNER LT2240 PWB-TUNER PWB-TUNER LT2220 PW B-TUNER T/A REQUIRED 79PQ6596 REMOTE 7A930037 REMOTE(EUR7616Z20/Z2A) 3A290003 REMOTE-RECEIVER (GP1UD263XK) 3A290003 REMOTE-RECEIVER (GP1UD263XK) 7A930033 SPEAKER-UNIT(ST-220-1) 7A930033 SPEAKER-UNIT(ST-220-1) 25261691 STAND-UNIT (GREY) 25261691 STAND-UNIT (GREY) 7A930029 TUNER (115V VF045AR) 7A930029 TUNER (115V VF045AR) 79PQ6630 UNIT-INVERTER (J191007.01) 7A930030 UNIT-INVERTER (J191007.00)
LT-3020 PARTS LIST LT-3040 PARTS LIST
Part Number Description Part Number Description
25327961 BACK-UNIT 25327961 BACK-UNIT 08LB10AE BEZEL (INCLUDES INNER BEZEL & PLATE) 08LB10AE BEZEL (INCLUDES INNER BEZEL & PLATE) 25327891 BEZEL-INNER (LC-T3020) 25327952 BEZEL-UNIT 7A081022 CORD-POW ER (2.0M 2P BLK) 7A392043 CABLE-ANT(BLACK RF-RF) 25435841 COVER-CORD 79PQ6612 CORD-POWER(2.0M 2P BLK) 25435861 COVER-LEFT 25435841 COVER-CORD 25435831 COVER-REAR 25435861 COVER-LEFT 25435851 COVER-RIGHT 25435831 COVER-REAR 25435881 COVER-TERMINAL LEFT 25435851 COVER-RIGHT 25435871 COVER-TERMINAL RIGHT 25435881 COVER-TERMINAL LEFT 25327951 FRONT-CABINET (W/BUTTONS LT-3020) 25435921 COVER-TERMINAL RIGHT 3A684029-M LCD (LC300W01 A3 LGPL) T/A REQ 3A684029-M LCD (LC300W01 A3 LGPL) T/A REQ 3A681009 LED (SML78420C) 3A681009 LED (SML78420C) 25620101 PLATE (COSMETIC LC-T3020) 7A930031 POWER-UNIT (HS210N2J)(T/A REQ) 7A930031 POWER-UNIT (HS210N2J)(T/A REQ) PWB-CONTROL LT3040 PWB-CONTROL/LED T/A REQUIRED PWB-CONTROL LT3020 PW B-CONTROL/LED T/A REQUIRED 8BL73M15 PW B-MAIN (LT-3040) T/A REQUIRED 8BL71M12 PWB-MAIN (LT-3020) T/A REQUIRED PWB-SUB LT3040 PWB-SUB T/A REQUIRED PWB-SUB LT3020 PWB-SUB T/A REQUIRED PWB-TUNER LT3040 PWB-TUNER T/A REQUIRED PWB-TUNER LT3020 PW B-TUNER T/A REQUIRED 79PQ6596 REMOTE 7A930037 REMOTE(EUR7616Z20/Z2A) 3A290003 REMOTE-RECEIVER (GP1UD263XK) 3A290003 REMOTE-RECEIVER (GP1UD263XK) 7A930034 SPEAKER-UNIT(ST-300-1) 7A930034 SPEAKER-UNIT(ST-300-1) 25261681 STAND-UNIT (GREY) 25261681 STAND-UNIT (GREY) 7A930029 TUNER (115V VF045AR) 7A930029 TUNER (115V VF045AR)
Page 54
MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
LT-3050 PARTS LIST
Part Number Description
08LB20AE BEZEL (INCLUDES INNER BEZEL & PLATE) 3A684029-M LCD (LC300W01 A3 LGPL) T/A REQ 8BL72M15 PWB-MAIN (LT-3050) T/A REQUIRED 25327961 BACK-UNIT 25327952 BEZEL-UNIT 7A392043 CABLE-ANT(BLACK RF-RF) 79PQ6612 CORD-POW ER(2.0M 2P BLK) 25435841 COVER-CORD 25435861 COVER-LEFT 25435831 COVER-REAR 25435851 COVER-RIGHT 25435881 COVER-TERMINAL LEFT 25435921 COVER-TERMINAL RIGHT 3A681009 LED (SML78420C) 7A930031 POWER-UNIT (HS210N2J)(T/A REQ) PWB-CONTROL LT3050 PW B-CONTROL/LED T/A REQUIRED PWB-SUB LT3050 PWB-SUB T/A REQUIRED PWB-TUNER LT3050 PW B-TUNER T/A REQUIRED 79PQ6618 REMOTE 3A290003 REMOTE-RECEIVER (GP1UD263XK) 7A930034 SPEAKER-UNIT(ST-300-1) 25261681 STAND-UNIT (GREY) 7A930029 TUNER (115V VF045AR)
Page 55
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