BBK LTD4014S Schematic
LCD TV
Service Manual
Chassis：MS9
Product Type：LCD3733EU
LCD4033NEU
LCD4233EU
Contents
Contents ..................................................................................................................2
1. Product Safety Servicing Guidelines ..................................................................3
2. Product Function Specifications.........................................................................5
3. Lcd Panel Spec ....................................................................................................6
3-1 General Description..................................................................................6
3-2 General Features ......................................................................................6
4. Block Diagram.....................................................................................................8
4-1 Main board ..................................................................................................8
4-2 Power board of LCD3733EU .......................................................................9
4-3 Power board of LCD4033NEU/LCD4233EU ...............................................9
5. Service Mode And Adjustment .........................................................................10
6. Software Updating............................................................................................13
6-1、Updating Tool .........................................................................................13
6-2、Software Updating Operation................................................................14
7. Bill Of Materials.................................................................................................24
8. Troubleshooting................................................................................................29
9. Ciruit Diagram...................................................................................................29
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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 f ilm 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 intended to
alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying the set.
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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.
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2 Product Function Specifications
- 5 -
3. LCD Panel Spec
3-1 General Description
LCD3733EU、LCD4033NEU、LCD4233EU’S LCD Panel is a TFT LCD 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
LCD3733EU:
LCD4033NEU:
- 6 -
LCD4233EU:
- 7 -
4. Block Diagram
4-1 Main board
- 8 -
4-2 Power board of LCD3733EU
POWER BOARD
4-3 Power board of LCD4033NEU/LCD4233EU
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5. Service Mode And Adjustment
Use the remote control, f irst 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.
Fac. Menu
Factory Menu
White Balance
Auto Test
Auto Calibration
LOGO
OSD Language
Country
Option
Factory Init
Test Pattern
Version:
Auto Calibration
Auto Color
Color Temp. Standard
RED COLOR 137
GREEN COLOR 140
BLUE COLOR 138
White Balance
R DRV 10
G DRV 10
B DRV 10
R CUT 137
G CUT 140
B CUT 138
BRIGHT_H 80
CONTRAST _H 80
BRIGHT_L 40
CONTRAST_L 40
LOGO
NULL
WELCOME
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Option
SOURCE TV
BRIGHT 0 10
BRIGHT 50 100
BRIGHT 100 135
CONTRAST 0 60
CONTRAST 50 125
CONTRAST 100 155
TOFAC M
HDMI Cable Standard
Factory Init
QingDao
HuangDao
Guiyang
Hungary
France
Austria
CLEAR PROTECTLY
CLEAR UNPROTECTLY
Test Pattern
BLUE
Version
Version:
LCD3733EU_VER1.00.20070619
Panel Type:
LG 32 (1366*768)
FLASH :
PS25LV040
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Design Menu
Picture Mode
Sound Mode
Sound Settings
Power Save
PIP Option
EMI
MOVESHARPNESS
LipSync
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 36
VOLUME 40 31
VOLUME 100 17
TVPRE SCALER 2
VOLUME SCALER 0
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
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