Hisense RL-32B02 Manuale utente

LCD TV

Service Manual

RL-32B02

MST 9 Chassis Scheme

(VER 1.0)

Team Leader:

Examined by:

Research & Development Centre

August 30, 2007

Contents

Record of Revision..........................................................................................................2

LCD3228LFR ...............................................................Error! Bookmark not defined.

I. Product Profile.............................................................................................................3

(I) Product Appearance.............................................................................................3

(II) Product Specifications and Features...................................................................4

1. LCD3228LFR Specifications..........................................................................4

2. Features of LCD3228LFR ..............................................................................5

II. Scheme Outline ..........................................................................................................6

III. Principles...................................................................................................................7

(I) Power Source Section ..........................................................................................7

(II) Signal Processing Section...................................................................................9

IV. Debugging of Chassis.............................................................................................25

Factory Debugging..................................................................................................25

1. Factory Menu................................................................................................25

2. Design Menu.................................................................................................26

V. Mstar9X Upgrading .................................................................................................27

Record of Revision

Version

Revision Content

Time

Ver 1.0

Formation of the first version

August 30, 2007

LCD TV Service Manual

I. Product Profile

(I) Product Appearance

Series 28

(II) Product Specifications and Features

1. LCD3228LFR Specifications

Display: Minimum diagonal of viewable image is 81cm.

Resolution: 1366×768

Power (Input): 50Hz 160-240V

Standby power consumption: ≤3W

Entire power consumption: 170W

Receiving system: TV PAL (D/K, I, B/G), SECAM

Video PAL, NTSC

Ambient conditions:

Operating temperature: 5℃~35℃

Operating humidity: 20%~80%RH

Atmospheric pressure: 86kPa~106kPa

Channel scope: Broadcasting and TV channels C1~C57

CATV enlarged channels Z1~Z38

Antenna input: 75Ω external terminal

Audio power: 6W+6W

Dimensions: 798mm×552mm×103mm (width × height × depth), exclusive of the base

798mm×614mm×240mm (width × height × depth), inclusive of the base

Weight: 13.7kg, exclusive of the base

16kg, inclusive of the base

2. Features of LCD3228LFR

Multi-media function

Having D-sub15 pin VGA interface that can be used for high performance LCD TV display to

realize a multi-media function

High quality LCD display

High brightness, high contrast, wide view angle, the gradual digital display, capable of reflecting a

perfect image

Multiple circuits for improving the image quality

3D filter circuit for color optimization; and circuits for improving dynamic and static image

quality

Automatic search and memory system

Automatic search function and storage capacity of 200 channels; making use of digital frequency

for tuner synthesis

Multi-mode wide-screen display

Full-screen (16: 9), 4: 3, Zoom 1, Zoom 2 and panorama, various aspect ratios for your choice

Type D power amplifier, capable of reproducing the sound in a higher dynamic scope, effective

and energy saving

Optional English/Russian menu

When there is no signal input for 15 minutes, the machine will automatically come into sleep or

standby status with low-power consumption, thereby effectively prolonging the service life of

the machine and saving the electricity

Multi-media ports

Route 1 D-sub 15 pin VGA input, Route 2 HDMI input, Route 2 video input, Route1 S-video

input, Route 1 component input, Route1 video output, Route 3 audio input and Route1 audio

output

SRS WOW sound effect processing, bringing more fair-sounding effect

TV program time-shifting and record & play functions

Capable of time-shifting playing, real-time recording or pre-set recording of TV program through

connecting with USB2.0 portable HD

The built-in cache supports time-shifting playing for about 15minutes.

II. Scheme Outline

This series of machines are added with double HDMI, SRS WOW, real-time clock and DMP record

& play functions based on the original MST9 servers.

MST9E88L has the following functions:

1. 3D video decoding and four groups of CVBS input and two groups of SVIDEO input

2. NICAM/BTSC/A2/EIA-J audio decoding

3. One group of HDMI/DVI input

4. Three groups of YPBPR/RGB input

5. Five groups of audio input with sound effect processing: alt, undertone, balance, bass, etc.

6. 1000 pages of images and texts

7. MCU with OSD

8. Three groups of AUDIO DAC providing analog output and I2S digital output with no need of

audio ADC

9. High performance 3D progressive processing

10. Movement self-adaptive 3D noise reduction processing

11. 10BIT ADC, with three high-speed video switches

12. Third-generation MSTAR color processing technology

13. Full-channel 10BIT digital signal processing

14. Built-in LVDS TX

15. Support DUAL 10BIT LVDS, and use S FLASH instead of P FLASH.

16. A DDR MEOMORY

17. Two-layered design, medium and high end whole series platform

18. Capable of supporting 1080P by simple upgrading

19. Color expansion technology, field depth expansion technology, independently-adjustable 6+1

colors, capable of opening the window for comparative demonstration

20. 6U88L of this series can support PIP function

III. Principles

(I) Power Source Section

Description of procedures: When the power is turned on, the main board will be supplied with

5V_STB; the relay will close after the main board sends out the power supply signal of ON/OFF; the

main power is started to supply 12V, 5V, and 24V for audio-use to the main board and 24V to the

INVERTER.

The 12V power goes into the main board through XPE008-XP8 to supply the TCON board of the

LCD screen (if the input voltage is 12V).

The 5V power goes into the main board through XPE008-XP8 to supply the TCON board of the

LCD screen (if the input voltage is 5V).

The 5V power is supplied through N8 (1117-2.5) to MST main chip and DDR, 3.3AVDD is supplied

through N7 (LD1117-3.3) to MST main chip, 3.3V is supplied through N10 (1084-3.3) to MST for

digital-use and 1.8V is supplied through N14 (DC－DC) to MST 1.8V.

The 24V power is supplied through XPE004-XP9 to the main board for the audio amplifier, of

which the 12V power is supplied to 7808(N5) and converted to 8V which is then to 5V and supplied

through U6 (LD1117-5) to the tuner.

The 24V power is supplied to the INVERTER of the LCD screen:

(II) Signal Processing Section

MST analog

3.3

Boosting

MST digital

3.3

(A) High and Medium Frequency Section

The high and medium frequency sections of this machine consist of U3 and U5. The radio frequency

signals are received by the tuner U3 and mixed and amplified internally to send out 38.9M medium

frequency signal, which is divided into two routes via C42 and R84. One of them is coupled by C46

and goes via D8 into ASW filter Z1 (HS9453). The audio medium frequency signal output is input to

Tuner

TDQ-6FT/

W116H

Acoustic

surface

HS9455

HS6274

Component

One group of S terminals

Two groups of AV input

Five groups of audio input

Key

Remote control

Video out

Audio out

Audio

amplifier

circuit

TDA 8932T

Loudspeaker

Audio excitation

Earphone

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