Daewoo DLP-26H1 User manual

Liquid Crystal Display Television
Service Manual
Chassis：： MST9E88
Product Type：：DLP-26H1
DLP-32H1
Ver 1.0
Otc. 2007

Contents
1. Product Safety Servicing Guidelines........................................ 1
2. Product Function Specifications ............................................ 3
2-1 Product Function ..................................................... 3
2-2 Specifications ....................................................... 4
3. Lcd Panel Spec ............................................................. 5
3-1 General Description .................................................. 5
3-2 General Features ..................................................... 5
4. Block Diagram .............................................................. 6
4-1 Chassis Block Diagram ................................................. 6
4-2 Signal Processing Part ................................................ 8
4-3 Power Part ............................................................ 9
5. Service Mode And Adjustment ............................................... 10
5-1 Service Mode ........................................................ 10
6. Software Updating ......................................................... 13
6-1、Updating Tool ....................................................... 13
6-2、Software Updating Operation................................................................................................ 14
7. Bill Of Materials ......................................................... 24
8. Troubleshooting ........................................................... 34
9. Ciruit Diagram ............................................................ 35

1. Product Safety Servicing Guidelines
WARNING:
Service should not be attempted by anyone unfamiliar with the
necessary precaution on this receiver. The following are the necessary
precaution to be observed before serving this chassis.
1. Since the power supply circuit of this receiver is directly connected
to the AC power line, an Isolation transformer should be used during any
dynamic service to avoid possible shock hazard.
2. When replacing a chassis in the cabinet, always be certain that all
the protective devices are put back in place, such as:
non-metallic control knobs, insulating cover, shields, isolation
resistor-capacitor network etc.
3. When replacing parts or circuit boards, disconnect the power cord.
4. When replacing a high wattage resistor (oxide metal film resistor)
on the circuit board, keep the resistor (1/2in) away from circuit board.
5. Connection wires must be kept away from components with high voltage
or high temperature.
6. If any fuse in this LCD TV receiver is blown, replace it with the FUSE
specified in the chassis part list.
The lightning flash with arrowhead symbol, within an
equilateral triangle is intended to alert the user to the
presence of uninsulated dangerous voltage within the products enclosure
that may be of sufficient magnitude to constitute a risk of electric
shock.
The exclamation point within an equilateral triangle is
1

intended to alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying the
set.
Many electrical and mechanical parts in the chassis have special
safety-related characteristics. These characteristics are often passed
unnoticed by a visual inspection. When replacement parts are required,
be sure the service technician uses replacement parts specified by us
that have the same characteristics as the original part. Unauthorized
substitutions may result in fire, electric shock and injury to persons
or other hazards. This LCD TV product should be situated away from heat
source such as radiation, stoves, or other product that produce heat.
2

Give Name
6m
30
8m
6m
6m
6m
15
15
30
8m
Note: The above figures are for reference only, please refer to the actual units to determine the
appearances.
IR angle for the remote control
screen
1
1
1
Source
TV
Picture Sound Zoom
1
4
7
2
5
8
0
3
6
9
Recall
Mute Still
I/ii
Display
CH
Menu
CH
VOL VOL
Hold
Pip Move Sleep
Reveal Mix CancelSubcode
Index Hold
Text
Source Swap
YPBPR
SCART1 SCART2
11
10 1 2
AC input socket
HDMI VGA
COMPONENT IN
VIDEO AUDIO/L AUDIO/R
VIDEO IN
ANT 75
S-VIDEO
YPB/CBPR/CR
AUDIO/L AUDIO/R
HDMI
1 2
2. Product Function and Specifications
2-1 Product Function
3

820(L)X240(D)X628(H )
22.5kg
Refer to rating label.
Refer to rating label.
6W+6W
2-2 Specifications
4

3. LCD Panel Spec
3-1 General Description
LCD3206NEU’S LCD Panel is a 32” TFT Liquid Crystal Display module
with 18-EEFL Backlight unit and 1ch-LVDS interface. This module supports
1366 x 768 WXGA format and can display true 16.7M colors (8-bit colors).
The inverter module for backlight is built-in.
3-2 General Features
5

4. Block Diagram
4-1 Chassis Block Diagram
POWER BOARDMAIN BOARD
6

MAIN BOARD
POWER BOARD
7

TUNER
TDQ-6FT
SAW FILTER
Hs9453
Hs6257
IF
TDA9886
HDMI INPUT
VGA INPUT
VGA/COMPONENT
AUDIO INPUT
VIDEO INPUT
S-VIDEO
INPUT
COMPONENT
INPUT
SCART1
SCART2
KEY/CONTROL
SIF
DDR
128M
FLASH
PSL25V040
LCD PANEL
AV/S-VIDEO
AUDIO INPUT
TPA
3101D2
CVBS/RGB
CVBS
MST9E88L
SPEAKER
EARPHONE
4-2 Signal Processing Part
8

1117-2.5
1084-3.3
1117-3.3
L7808
PFC
AC INPUT
50/60HZ
DC/DC
DC/DC
+5V
+12V
PANEL POWER
+8V
1117-5
+24V
Inverter POWER
DC-DC
DC/DC
74HC4052
PANEL POWER
MST2.5
MST2.5(A)
MST3.3
DDR2.5
MST1.8(D)
+2.5VM +3.3AVDD +1.8V +3.3V
DC/DC
+28V AMP
TUNER
+33V
4-3 Power Part
9

5. Service Mode And Adjustment
5-1 Service Mode
Use the remote control, first open MAIN MENU with MENU button, and
choose SOUND with the CHANNEL UP/DOWN button, then choose the BALANCE
with VOLUME UP, while Balance value is 0, press 0、5、3、2,you can enter
factory menu.
5-1-1、Fac. Menu
Factory Menu
White Balance
Auto Test
Auto Calibration
LOGO
OSD Language
Country
Option
Factory Init
Test Pattern
Version:
White Balance
RDRV 10
GDRV 10
BDRV 10
RCUT 130
GCUT 138
BCUT 140
BRIGHT_H 80
CONTRAST _H 80
BRIGHT_L 40
CONTRAST_L 40
Auto Calibration
Auto Color
ColorTemp. Standard
RED COLOR 130
GREEN COLOR 138
BLUE COLOR 140
LOGO
NULL
HISENSE
WELCOME
10

Option
SOURCE TV
BRIGHT0 10
BRIGHT 50 100
BRIGHT100 135
CONTRAST 0 60
CONTRAST 50 125
CONTRAST 100 155
TOFAC M
HDMICable Standard
Factory Init
QingDao
HuangDao
Guiyang
Hungary
France
Austria
CLEAR PROTECTLY
CLEAR UNPROTECTLY
Test Pattern
BLUE
Version
Version:
LCD3206NEU(1)_VER1.10.200708
31
Panel Type:
LG 32 (1366*768)
FLASH :
PS25LV040
11

Design Menu
Picture Mode
Sound Mode
Sound Settings
Power Save
PIP Option
EMI
MOVESHARPNESS
LipSync
Sound Mode
Standard 120Hz 12
500Hz 10
1.5KHz 11
5KHz 8
10KHz 15
Music 120Hz 19
500Hz 11
1.5KHz 12
5KHz 14
10KHz 20
Speech 120Hz 4
500Hz 10
1.5KHz 12
5KHz 7
10KHz 5
Picture Mode
Standard Brightness 50
Contrast 50
Colour 50
Bright Brightness 60
Contrast 60
Colour 55
Soft Brightness 45
Contrast 45
Colour 45
Sound Settings
VOLUME 0 128
VOLUME 1 79
VOLUME 20 27
VOLUME 40 23
VOLUME 100 18
TVPRE SCALER 6
VOLUME SCALER 0
12

6. Software Updating
6-1、Updating Tool
- You can update the software through a special tool (show as below)
13

6-2、Software Updating Operation
1、Connect the Debug board to the TV use VGA interface, then connect the
Debug board to the computer, just as the pictures showing.
14

2．Set the ISP_TOOL4.0.9 -------only for the first time update.
DLPORTIO.dll and FTD2XX.DLL must be in the same folder
1) Find the folder where the ISP_TOOL4.0.9 lies in.
Note: DLPORTIO.dll and FTD2XX.DLL must be in the same folder.
2) Double click the ISP_TOOL4.0.9 icon, and then a dialog will show
as below.
3) Click the Config button. And then a dialog will show as below.
15

You should set the Config like what the picture shows.
16

17

4) After you have finished all above, you should click the Apply button
to complete the configuration.
3. Turn on the TV, then we can update.
4. Double click the ISP_TOOL4.0.9 icon, and then a dialog will show as
below.
18