LG 42PC5D-UC / 42PC5DC-UC (CHASSIS:PA-73E) Service Manual ▷ View online
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ADJUSTMENT INSTRUCTIONS
1. Application Object
These instructions are applied to all of the PDP TV, PA73E.
2. Notes
(1) Because this is not a hot chassis, it is not necessary to use
an isolation transformer. However, the use of isolation
transformer will help protect test equipment.
transformer will help protect test equipment.
(2) Adjustments must be done in the correct order.
(3) The adjustments must be performed in the circumstance of
(3) The adjustments must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
there is no specific designation.
(4) The input voltage of the receiver be must kept 110V, 60Hz
when adjusting.
(5) The receiver must be operational for about 15 minutes
prior to the adjustments.
O
Preliminary action is applied to the test for afterimage
discharge detection, and 100% FULL WHITE PATTERN
must be operated automatically.
must be operated automatically.
1) Pressing Power On key
2) Full Test Pattern(2 min 30sec)
3) Full Black Pattern(30sec)
4)Full White Pattern
2) Full Test Pattern(2 min 30sec)
3) Full Black Pattern(30sec)
4)Full White Pattern
O
Pattern Mode is deselected by pressing CH +/-, Exit Key.
[
Set is activated HEAT-RUN without signal generator in this
mode.
3. MICOM Download(Option)
3-1. Required Test Equipment
(1) JIG-LEVER TYPE for adjusting: 1EA
(2) PC & MONITOR: 2EA
(3) BOARD for INTERFACE: IIC & ISP BOARD: 2EA
(4) 15P D-SUB CABLE: 2EA
(5) Using the 12/15 line of D-SUB 15P
(2) PC & MONITOR: 2EA
(3) BOARD for INTERFACE: IIC & ISP BOARD: 2EA
(4) 15P D-SUB CABLE: 2EA
(5) Using the 12/15 line of D-SUB 15P
12-SDA/15-SCL
3-2. JIG Connection
3-3. Establishment Program
(1) Establish LGE Monitor Tools v1.1
(2) The program work and it is opened program window as
(2) The program work and it is opened program window as
seen below.
Test Pattern 2min 30sec
Test Pattern 30sec
If you turn on a still screen more than 20 minutes (Especially
Digital pattern(13 CH), Cross Hatch Pattern), an afterimage
may occur in the black level part of the screen.
Digital pattern(13 CH), Cross Hatch Pattern), an afterimage
may occur in the black level part of the screen.
connection
to PC
connection
to PC
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ADJUSTMENT INSTRUCTIONS
(3) Click the first icon shown in fig.9. The window seen in
fig.10 should appear.
3-4. Set Method
(1) MCU Select: MTV512M64
(2) Option
(2) Option
R/W Option: Auto Write(Verity)
Jig Option: Myson
Transmit Speed: Medium
Jig Option: Myson
Transmit Speed: Medium
(3) Check: Just do it with blank micom.
(4) PORT
(4) PORT
Chose Parallel Port (normal LPT1)
Attention: You must chose EPP when select Rom BIAS at
LPT
Attention: You must chose EPP when select Rom BIAS at
LPT
3-5. Download Method
(1) Click the Load File.
(2) Locate and select the correct file from your computer.
(*.hex).
(3) Click the Send.
(4) When you see (ISP COMPLETE) the download is
complete.
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ADJUSTMENT INSTRUCTIONS
4. USB S/W Download (Option)
4-1. Overview
USB Download enables quick response to S/W upgrading and
helps to configure the panel to the latest updates.
helps to configure the panel to the latest updates.
4-2. How to Download
(1) Before starting USB download, ensure that the power is
turned off and the display is turned on.
(2) Once the USB memory stick containing the upgraded file
is connected to the USB port on the main board, the
following picture appears on the screen.
following picture appears on the screen.
(3) Check the current version at [Current TV Software Version
Information] and the target version at [New Found TV
Software Version Information]. Press Enter on the remote
controller to confirm the upgrade.
Software Version Information]. Press Enter on the remote
controller to confirm the upgrade.
(4) The following picture shows the downloading in progress.
Once the download is completed, the power is
automatically turned on and off. (Otherwise, please turn the
power on and off)
automatically turned on and off. (Otherwise, please turn the
power on and off)
(5) Once the download is completed, remove the USB
memory stick from the USB port. Press IN-START on the
remote controller to check the upgraded S/W version at the
top of the screen while the display is turned on.
remote controller to check the upgraded S/W version at the
top of the screen while the display is turned on.
Do not plug off.
Press EXIT to cancel the upgrade.
<S/W Upgrade Screen>
The software upgrade is now in progress.
Until the whole process if completed, please.
- Do not remove the memory card from the slot.
- Do not plug off.
Reading the file---Done
Upgrading---Done
The TV will restart automatically in 0 seconds.
<Downloading in progress Screen>
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ADJUSTMENT INSTRUCTIONS
5. POWER PCB Assy Voltage
Adjustment
(Va, Vs Voltage Adjustment)
5-1. Test Equipment :
D.M.M 1EA
5-2. Connection Diagram for Measuring
Refer to Fig 1.
5-3. Adjustment(42”/50”)
(1) Va Adjustment
1) Connect + terminal of D.M.M to Va pin of P812(50”:
P805) and connect – terminal to GND pin of P812(50”:
P805).
P805).
2) Adjust VR901 voltage to match that of the label on the
Top/Right of the panel. (Deviation : ±0.5V)
(2) Vs Adjustment
1) Connect + terminal of D.M.M to Vs pin of P812(50”:
P805) and connect – terminal to GND pin of P812(50”:
P805).
P805).
2) Adjust VR951 voltage to match that of the label on the
Top/Right of the panel. (Deviation : ±0.5V)
5-4. Adjustment(Sanken: EAY32929001)
(1) Va Adjustment
1) Connect + terminal of D.M.M to Va pin of P12 and
connect – terminal to GND pin of P12.
2) Adjust VR951 voltage to match that of the label on the
Top/Right of the panel. (Deviation : ±0.5V)
(2) Vs Adjustment
1) Connect + terminal of D.M.M to Vs pin of P12 and
connect – terminal to GND pin of P12.
2) Adjust VR901 voltage to match that of the label on the
Top/Right of the panel. (Deviation : ±0.5V)
Each PCB Assy must be checked by Check JIG Set before
assembly. (Especially, be careful Power PCB Assy which can
cause Damage to the PDP Module.)
assembly. (Especially, be careful Power PCB Assy which can
cause Damage to the PDP Module.)
1
1
1
VsADJ
VR951
VaADJ
VR901
3.3VADJ
VR221
T8
01
01
T9
01
01
T1
12
12
T5
01
01
L6
01
01
5V
GND
Va
GND
GND
NC
Vs
Vs
P811
1
1
1
VsADJ
VR951
VsADJ
VR951
VaADJ
VR901
VaADJ
VR901
3.3VADJ
VR221
T8
01
01
T9
01
01
T1
12
12
T5
01
01
L6
01
01
5V
GND
Va
GND
GND
NC
Vs
Vs
P811
<Fig. 1-1> Connection Diagram of Power Adjustment for
Measuring (Power Board): 42” XGA/VGA
VsADJ
VR951
5V
GND
Va
GND
GND
NC
Vs
Vs
P811
1
1
1
VaADJ
VR901
3.3VADJ
VR221
T8
01
01
T9
01
01
L8
51
51
T5
01
01
T1
12
12
L6
01
01
VsADJ
VR951
5V
GND
Va
GND
GND
NC
Vs
Vs
P811
1
1
1
VaADJ
VR901
VaADJ
VR901
3.3VADJ
VR221
T8
01
01
T9
01
01
L8
51
51
T5
01
01
T1
12
12
L6
01
01
<Fig. 1-2> Connection Diagram of Power Adjustment for
Measuring (Power Board): 50”
<Fig. 1-3> 50” PSU(Sanken: EAY32929001)
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