Hisense LCD3233NEU Schematic

Liquid Crystal Display Television

Service Manual

Chassis：MS9

Product Type：LCD3233NEU

Hisense Electric Co.，Ltd.

Note: This Specification is subject to change without notice.

Contents

Contents ...................................................................... 1

Service Manual ................................................................ 2

1. Product Safety Servicing Guidelines........................................ 2

2. Product Function Specifications............................................ 4

2-1 Product Function ..................................................... 4

2-2 Specifications ....................................................... 5

3. Lcd Panel Spec............................................................. 6

3-1 General Description .................................................. 6

3-2 General Features ..................................................... 7

4. Block Diagram.............................................................. 8

4-1 Chassis Block Diagram ................................................. 8

4-2 Signal Processing Part ............................................... 11

4-3 Power Part ........................................................... 12

5. Service Mode And Adjustment............................................... 13

5-1 Service Mode ........................................................ 13

6. Software Updating......................................................... 17

6-1、Updating Tool ....................................................... 17

6-2、Software Updating Operation ......................................... 18

7. Explode View And Bom...................................................... 29

8. Bill Of Materials......................................................... 30

9. Troubleshooting........................................................... 39

10. Ciruit Diagram........................................................... 39

Service Manual

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.

6. Connection wires must be kept away from components with high voltage

or high temperature.

7. 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.

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. P r o d u c t Fu n c t i o n an d S p ec i f i c a ti o n s 2- 1 P r o d u ct F u n c t i on

IR angle for the remote control

screen

Gi ve Nam e

HDMI

AUDIO/R

VGA

AUDIO/L

PB/CB

COMPONENT IN

VIDEO

PR/CR

AUDIO/L

VIDEO IN

AUDIO/R

S-VIDEO

ANT 75

DIGITAL AUDIO OUT

Source

Zoom

Picture

Sound

Display

Recall

VOL

I/ii

Mute

Still

Hold

Index Hold

Sleep

Pip

Move

Text

Reveal

CancelSubcode

Mix

Source Swap

SCART1 SCART2

1 Menu button : activate OSD menu 2 Source button : activate OSD source select

3 VOL : 4 VOL :

5 CH : 6 CH :

Volume decrease / Left button Volume increase / Right button

Previous channel / Down button Next channel / Up button

7 POWER indicator 8 Remote sensing window

9 AC Power socket 10 Power switch(standby) 11 Power switch(on/off)

No te : The above f igures are for re ference only, please refer to th e a ctual units to determine the

appearances.

2-2 Specifications

3. LCD Panel Spec 3-1 General Description

LCD3233NEU’S LCD Panel is a 32” TFT Liquid Crystal Display module with 16-CCFL 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. FEATURES

- High brightness (500 nits)

- Ultra-high contrast ratio (800:1)

- Faster response time (gray to gray average 6.5ms)

- High color saturation NTSC 75%

- Ultra wide viewing angle: 176(H)/176(V) (CR>20) with Super MVA technology

- DE (Data Enable) only mode

- LVDS (Low Voltage Differential Signaling) interface

- 180 degree rotation display (option)

- Color reproduction (nature color)

3-2 General Features

4. Block Diagram

4-1 Chassis Block Diagram

MAIN BOARD

POWER BOARD

MAIN BOARD

POWER BOARD

4-2 Sign a l P r o c e s s i n g P a r t

TU N E R TD Q - 6 F T

SAW FILTE R Hs9 4 5 3 Hs6 2 5 7

HDMI I N P U T

VG A IN P U T

COM P O N E N T IN P U T

VG A / C O M P O N E N T AUDIO I N P U T

IF TD A 9 8 8 6

SI F

LCD PANEL

SP E A K E R

VI D E O I N P U T

S- V I D E O IN P U T

AV/S-VIDEO AU D I O I N P U T

KE Y / C O N T R O L

SC A RT1

SC A RT2

AM P TD A 8 9 3 2 T

CVB S / R G B

CVB S

FL A S H PS L 2 5 V 0 4 0

MST9E88L

DDR 128M

EA R P H O N E

DDR2 .5

MST2 .5

MST3 .3

+2.5 VM

+3.3 AVDD

1117-2 .5

+3.3 V

1117-3 .3

MST2 .5 (A )

1084 -3 .3

MST1 .8 (D )

+1.8 V

DC-D C

74HC4052

1117-5

TUNER

+33V

+8V

L7 80 8

PANEL POW ER

+5V

+12V

PANEL POW ER

Inverter POWER

+24V

DC/DC

AMP

+28V

DC/DC

PFC

50/60 HZ

AC INPU T

4-3 Powe r P a r t

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/DOWN, In this condition, press 0、5、3、2,you can enter factory menu.

5-1-1、Fac. Menu

Factory Menu

White Balance Auto Calibration LOGO OSD Language Country Option Factory Init Test Pattern Version:

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

Auto Calibration

Auto Color Color Temp. Standard RED COLOR 137 GREEN COLOR 140 BLUE COLOR 138

LOGO

NULL HISENSE WELCOME

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

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