DOWNLOAD LG 32LC7D (CHASSIS:LA73E) Service Manual ↓ Size: 14.71 MB | Pages: 45 in PDF or view online for FREE

Model
32LC7D (CHASSIS:LA73E)
Pages
45
Size
14.71 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lc7d-chassis-la73e.pdf
Date

LG 32LC7D (CHASSIS:LA73E) Service Manual ▷ View online

- 13 -
7EDID(The Extended Display 
Identification Data)/DDC
(Display Data Channel) Download
This is the function that enables “Plug and Play".
7-1. HDMI EDID Data Input
(1) Required Test Equipment
1) PC, Jig for adjusting DDC. (PC serial to D-sub
Connection equipment)
2) S/W for writing DDC(EDID data write & read)
3) D-Sub cable
4) Jig for HDMI Cable connection
(2) Preparation for Adjustments & Setting of Device
1) Set devices as below and turn on the PC and JIG.
2) Open S/W for writing DDC (EDID data write & read).
(operated in DOS mode)
7-2. EDID DATA for LA73E
O
EDID for HDMI-1 (DDC (Display Data Channel) Data)
EDID Block 0 table =
EDID Block 1 table =
O
EDID for HDMI-2 (DDC (Display Data Channel) Data)
EDID Block 0 table =
EDID Block 1 table =
O
EDID for RGB-PC
EDID Block 0 table =
  0   |  00  FF  FF  FF  FF  FF  FF  00  1E  6D  01  00  01  01  01  01
 10  |  00  11  01  03  80  73  41  96  0A  CF  74  A3  57  4C  B0  23
 20  |  09  48  4C  2F  CE  00  31  40  45  40  61  40  01  01  01  01
 30  |  01  01  01  01  01  01  66  21  50  B0  51  00  1B  30  40  70
 40  |  36  00  C4  8E  21  00  00  1E  0E  1F  00  80  51  00  1E  30
 50  |  40  80  37  00  C4  8E  21  00  00  1C  00  00  00  FD  00  38
 60  |  4B  1F  3C  09  00  0A  20  20  20  20  20  20  00  00  00  FC
 70  |  00  4C  47  20  54  56  0A  20  20  20  20  20  20  20  01  98
  0  |  02  03  16  F1  46  84  05  03  02  20  22  23  15  07  50  66
 10  |  03  0C  00  10  00  80  01  1D  00  72  51  D0  1E  20  6E  28
 20  |  55  00  C4  8E  21  00  00  1E  01  1D  80  18  71  1C  16  20
 30  |  58  2C  25  00  C4  8E  21  00  00  9E  8C  0A  D0  8A  20  E0
 40  |  2D  10  10  3E  96  00  C4  8E  21  00  00  18  8C  0A  D0  8A
 50  |  20  E0  2D  10  10  3E  96  00  13  8E  21  00  00  18  00  00
 60  |  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
 70  |  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  25
  0  |  00  FF  FF  FF  FF  FF  FF  00  1E  6D  01  00  01  01  01  01
 10  |  00  11  01  03  80  73  41  96  0A  CF  74  A3  57  4C  B0  23
 20  |  09  48  4C  2F  CE  00  31  40  45  40  61  40  01  01  01  01
 30  |  01  01  01  01  01  01  01  1D  00  72  51  D0  1E  20  6E  28
 40  |  55  00  C4  8E  21  00  00  1E  01  1D  80  18  71  1C  16  20
 50  |  58  2C  25  00  C4  8E  21  00  00  9E  00  00  00  FC  00  4C
 60  |  47  20  54  56  0A  20  20  20  20  20  20  20  00  00  00  FD
 70  |  00  38  4B  1F  3C  09  00  0A  20  20  20  20  20  20  01  66
  0  |  02  03  16  F1  46  84  05  03  02  20  22  23  15  07  50  66
 10  |  03  0C  00  20  00  80  8C  0A  D0  8A  20  E0  2D  10  10  3E
 20  |  96  00  C4  8E  21  00  00  18  8C  0A  D0  8A  20  E0  2D  10
 30  |  10  3E  96  00  13  8E  21  00  00  18  00  00  00  00  00  00
 40  |  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
 50  |  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
 60  |  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00
 70  |  00  00  00  00  00  00  00  00  00  00  00  00  00  00  00  B3
  0  |  00  FF  FF  FF  FF  FF  FF  00  1E  6D  01  00  01  01  01  01
 10  |  00  11  01  03  68  73  41  96  0A  CF  30  A3  57  4C  B0  23
 20  |  09  50  4E  A1  08  00  01  01  01  01  01  01  01  01  01  01
 30  |  01  01  01  01  01  01  66  21  50  B0  51  00  1B  30  40  70
 40  |  36  00  C4  8E  21  00  00  1E  0E  1F  00  80  51  00  1E  30
 50  |  40  80  37  00  C4  8E  21  00  00  1C  00  00  00  FD  00  38
 60  |  4B  1F  3C  09  00  0A  20  20  20  20  20  20  00  00  00  FC
 70  |  00  4C  47  20  54  56  0A  20  20  20  20  20  20  20  00  D0
LCD TV SET
(or Digital Board)
- 14 -
8. Adjustment of White Balance
8-1. The Purpose and Principal of Color
Temperature Adjustment
(1) Purpose: to reduce the difference in color temperature
among modules
(2) Principal: A module is in full dynamic range when RGB
Gain on OSD is 192. To adjust the white balance without
causing full dynamic range and full data, fix one of RGB
Gains at 192 and control the other two by reducing them
from 192.
8-2. Required Equipment
(1) Color Analyzer : CA-110  or CA-210
(2) Automatic adjustor (with automatic adjustment necessity
and the RS-232C communication being possible)
8-3. Connection Diagram of Equipment
for Measuring 
(Automatic Adjustment)
Use the internal pattern to adjust White Balance. The pattern
is automatically given when the automatic adjustment device
is connected or when a user presses ADJ on the remote
controller to start Ez Adjust and then selects 6.White-Balance.
* Requirements for Automatic Adjustment
(1) The illuminance of surroundings
10 lux or less; preventing light in surroundings as much as
possible
(2) The location of the Probe
1) For PDP: place the color analyzer (CA-110, CA-210)
close to the surface of a module and start the
adjustment.
2) For LCD: place the color analyzer (CA-110, CA-210)
close to the surface of a module within 10 cm and keep
the probe of the color analyzer at 80° to 100° angle from
the surface of a module.
(3) Aging time
1) Once Aging is started, keep the power on without power
supply interruption for at least 15 minutes for heat run.
2) For PDP, use the internal pattern to adjust White
Pattern.
3) For LCD, use NO SIGNAL or Full White Pattern to
ensure the backlight is turned on.
8-4.  Adjustment of White Balance
(Automatic Adjustment)
(1) Turn on the POWER ON(
Â
) of the remote controller to set
the adjustment and then start the automatic adjustment or
set the Baud Rate to 115200.Â) of the remote controller to 
(2) Start the adjustment from “wb 00 00” and complete it at
“wb 00 ff”. (Adjust the offset if necessary)
wb 00 00 the automatic adjustment of White Balance is
started.
wb 00 10 adjusting gain (internal pattern appears) is
started.
ja 00 ff adjusting data
jb 00 c0
...
wb 00 1f adjusting gain is completed.
Adjust the offset (from wb 00 20 to wb 00 2f) if necessary.
wb 00 ff the automatic adjustment of White Balance
(internal pattern disappears) is completed.
C A -100+
C O L O R
A N A L Y Z E R
T Y P E ; C A -100+
F u l l W h i t e P at t er n
R S-232C
Connection Diagram of Automatic Adjustment
- 15 -
* RS-232C Command
(Automatic Adjustment)
LA73E Chassis Model All]
8-5.  Adjustment of White Balance
(Manual Adjustment)
Required Equipment :  CA-210 
(1) Enter ‘Ez - Adjust’ by pressing ADJ KEY on the Service
Remote Control.
(2) Select "9. TEST PATTERN" using CH +/- Key and HEAT
RUN at least 30 minutes by pressing the ENTER Key.
(3) Zero Calibrate of the Color Analyzer, then attach sensor to
LCD module surface when you adjust.
(4) Select ‘6. White-Balance’ of ‘Ez - Adjust’ by pressing the
ADJ KEY on the Service R/C. Then enter adjustment mode
by pressing the Right KEY (G) .
(The internal pattern of full white appears by pressing G)
(5) The adjustment is conducted in three levels of color
temperature; COOL, MEDIUM, and WARM.
* Color temperature: Cool, Medium, Warm
(1) When R Gain is fixed at 192,
Control G Gain and B Gain by reducing them from 192.
(2) When B Gain is fixed at 192,
Control R Gain and G Gain by reducing them from 192.
(3) When G Gain is fixed to 192,
Control R Gain and B Gain by reducing them from 192.
Fix one of three Gains (R Gain, G Gain, and B Gain) at 192
and control the other two by reducing values from 192 to
prevent it from increasing.
(When RGB Gains are all 192, the module is in full dynamic
range.)
9. USB S/W Download (Option)
9-1. Overview
USB Download enables quick response to S/W upgrading and
helps to configure the panel to the latest updates.
9-2. 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.
(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.
(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)
(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.
R Gain
G Gain
B Gain
R Cut
G Cut
B Cut
jg
jh
ji
Cool
ja
jb
jc
Mid
RS-232C COMMAND
[CMD ID DATA]
CENTER
(DEFAULT)(Decimal)
jd
je
jf
00
00
00
192
192
192
Warm
Min
Max
(Deci
mal)
64
64
64
Cool
64
64
64
Mid
64
64
64
Warm
   
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>
- 16 -
No
RGB DTV
Yes
Adaptiv e Picture  Mode
¥Audio Outp ut 
10W*2
¥Freeze No
Oth ers
Phase, Siz eAdjust
DOS70,VGA60,S
VGA60,
XGA60,WXGA60,
SXGA60
RGB In  (15 Pin)
Yes
Auto Nav igation (Link)
Yes
BBE
Yes
SRS Trusur round TX
Yes(2D)
Enhance d Noise  Reductio n
USE scalie r On/Off OSD Menu
Yes
XD Engine
Use B rief Inf o
O(PSIP)
Progr am Gui de Type
1 RF
1 RF(Air  /Cable)
RF
Remark
Broadcom
Feature
TROUBLESHOOTING & BLOCK DIAGRAM
- Prouct Brief spec
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