BBK LD3216DK Bedienungsanleitung

Service Manual

LD3216DK(RU)

Model version:V1C1V2.00

V1C5V2.00

Catalog

Chapter One About Maintenance

1.1 Safety precautions

1.1.1 Power supply

1.1.2 Precautions for antistatic

1.1.3 Precautions for display screen

1.1.4 Precautions for laser head

1.1.5 About placement position

1.2 Maintenance method

1.2.1 Electric resistance method

1.2.2 Voltage method

1.2.3 Current method

1.2.4 Element substitution method

1.2.5 Cutting method

1.2.6 Visualized method

1.2.7 Comparison method

1.3 Required device for maintenance

Chapter Two Functions and Operation Instructions

2.1.2 Set list

2.1.3 Controls and functions

2.2.1 Supported formats

2.2.2 Controls and functions

Section One TV Segment

2.1.1 Features

2.1.4 Connection and starting

2.1.5 TV Mode

2.1.6 ATV Mode

2.2 Section Two DVD segment

2.4

2.4.1 Useful notes

Chapter Three Principle and Servicing

The previous manual: TV part

Section One Principle of the player

3.1.1

3.1.3

circuit

Section Three

The next manual: DVD part

3.2.1

Others

Principle instruction for LD3216(RU) player

Video

Section Two

Section Three

Section One Principle of the player

3.1.1 Block diagram for player

Section Two Unit circuit principle

Servo circuit

3.2.2 Decoding circuit

3.2.3 Audio/Video Circuit

Section Three Troubleshooting flow chart

Section Four

Chapter Four Explosion Flow Chart

3.1.2

3.1.4

3.1.5

OVerall wiring diagram

Block diagram of the player

Audio circuit

Waveform diagram

Chapter Cinque PCB board & Circuit diagram

Section One PCB board

Section Two Circuit diagram

Chapter Six BOM List

Troubleshooting flow chart

Waveform diagram

Waveform Diagram

Chapter One About Maintenance

1.1 Safety precautions

1.1.1 Power supply

When maintenance personnel are repairing DVD TV, he should pay special attention to the power

with 220V 800V AC and 330V DC which will cause hurt and damage to persons!

1.1.2 Precautions for antistatic

Movement and friction will both bring static electricity which causes serious damages to integrated

IC. Though static charge is little, when a limited quantity of electric charge is added to large

scaleintegrated IC, as the capacitance is very small in the meantime, now the integrated IC is very much

easy to be struck through by static electricity or the performance will decrease. Thus static electricity

prevention is of extraordinary importance. The following are several measures to prevent static

electricity:

1. Use a piece of electric conduction metal with the length of about 2 metres to insert into the earth,

and Fetch the lead wire from the top of the surplus metal and connect to the required static electricity

device. The length and depth of the metal embedded under the earth should be determined according to

the wettability of the local soil. For humid places, it may be shorter, and longer and deeper for dry places.

If possible, it can be distributed and layed in terms of “#” shape.

2. On operating table-board, the antistatic table cushion should be covered and grounded.

3. All devices and equipments should be placed on the antistatic table cushion and grounded.

4. Maintenance personnel should wear antistatic wrist ring which should be grounded.

5. Places around the operating position should also be covered with electric conduction cushion or

Painted with antistatic paint.

1.1.3 Precautions for display screen

1. Display screen is breakable article, so please protect carefully when carrying and prevent fingers

or hard objects striking the screen to damage structure of the screen.

2. When cleaning screen, do not use organic chemicals. You should use cloth and use small

amount of special cleaning liquid in places difficult to clean.

- 1 -

1.1.4 Precautions for laser head

1. Do not stare at laser head directly, for laser emission will occur when laser head is working,

which will Hurt your eyes!

2. Do not use wiping water or alcohol to clean laser head, and you may use cotton swab.

1.1.5 About placement position

1. Never place TV in positions with high temperature and humidity.

2. Avoid placing near high magnetic fields, such as loudspeaker or magnet.

3. Positions for placement should be stable and secure.

1.2 Maintenance method

1.2.1 Electric resistance method

Set the multimeter in resistance position and test whether the numerical value of resistance of each

point in the circuit has difference from the normal value to judge the trouble spot. But in the circuit the

tested numerical value of resistance is not accurate, and the tested numerical value of integrated IC's

pins can only be used for reference, so the elements should be broken down for test.

1.2.2 Voltage method

Voltage method is relatively convenient, quick and accurate. Set the multimeter in voltage position

and test power supply voltage of the player and voltage of a certain point to judge the trouble spot

according to the tested voltage variation.

1.2.3 Current method

Set the multimeter in current position and test current of the player of a certain point to judge the

trouble spot. But when testing in current method, the multimeter should be series connected in the

circuit, which makes this method too trivial and troublesome, so it is less frequently used in reality.

1.2.4 Element substitution method

When some elements cannot be judged good or bad, substitution method may de adopted directly.

1.2.5 Cutting method

Cutting method should be combined with electric resistance method and voltage method to use.

This method is mainly used in phenomena of short circuit and current leakage of the circuit. When

cutting the input terminal voltage of a certain level, if voltage of the player rises again, it means that the

trouble lies in this level.

- 2 -

1.2.6 Visualized method

Directly view whether abnormalities of collision, lack of element, joint welding, shedding welding,

rosin joint, copper foil turning up, lead wire disconnection and elements burning up among pins of

Elements appear. Check power supply of the machine and then use hands to touch the casing of part of

elements and check whether they are hot to judge the trouble spot. You should pay more attention when

using this method to check in high voltage parts.

1.2.7 Comparison method

A same good PC board is usually used to test the correct voltage and waveform. Compared these

data with those tested through fault PC board, the cause of troubles may be found.

Through the above maintenance method, theoretical knowledge and maintenance experience, all

difficulties and troubles will be readily solved.

1.3 Required device for maintenance

Audio Generator

Digital oscillograph ( 100MHE)

SMD rework station

Multimeter

Soldering iron

Pointed-month pincers

Cutting nippers

Forceps

Electric screw driver

Terminals connecting cord

Headphone

Microphone

- 3 -

2.1.1 Features

Chapter Two

Functions and Operation Instructions

2.1 Section One TV SEGMENT

DVB-T tuner for watching digital TV channels

Parental Lock Control to protect children from watching inappropriate programmes

Electronic Program Guide (EPG) and information Plate

Coaxial digital audio output

Supports Digital Radio mode

Supports Audio language and Subtitle language

Supports Favorite channels

DTV mode

High quality 32"(16:9) color TFT-panel

Maximum resolution 1366x768

Built-in DVD player with slot-in mechanism

Multisystem TV tuner

Built-in stereo acoustic system

USB port, providing playback of files of supported formats form external flash memory devices

HDMI interface provides high definition image and digital audio

Composite audio, video inputs

Component, S-VIDEO, RGB, SCART and VGA video inputs

Digital coaxial audio output for multiple-channel sound playback

Stereo headphone output

Universal holder for furniture or wall fixation with 270 rotation angle

2 MIC inputs for karaoke function

Wide range of operating power supplies(~100-240V) automatic short circuit protection

Automatic and fine tuning functions with 100 channels scanning & memory

Adjustable brightness, contrast, saturation, sharpness and 4 preset image settings

Adjustable tone and sound balance with 4 preset audio settings

Digital video playback: DVD-Video, Super VCD ,VCD compatibility

MPEG-4 standard support

Digital audio playback: CD-DA, HDCD and WMA compatibility

Playback of DVD,VCD,CD+G karaoke discs

KARAOKE++ system, expand karaoke function

Digital graphic albums playback: Kodak picture CD and JPEG

Compatible disc types: CD-R/CD-RW,DVD-R/DVD-RW.DVD+R/DVD+RW

Russia, CIS and Baltic States adaption interface and filenames,ID3-tags and CD-Text support simplifies device operation

"Q-Play " funtion provides direct playback and allows to skip commercial that is not possible to rewind

"Browser" function provides easy access to playback control

Automatic screensaver function

Parental control function to protect children from watching inappropriate discs

Wide resolution range

RGB setting and 4 presets of colour temperature

External audio signal playback

Adjustable tone,balance and 4 preset audio settings

- 4 -

2.1.2 Set list

(1) Panel controls and indication

2.1.3 CONTROLS AND FUNCTIONS

Composite video/audio input

- 5 -

(2) Remote control general view

To display the program guide in DTV .

current source infomation.

/Press to switch one

or two-digit program number.

in DVD /Press to display

Open favourite channel list in DTV/ATV.

GREEN function button.

in ATV and DTV.

CYAN function button.

YELLOW function button.

Press to change the DTV/ATV/DVD/YPbPr/AV1/AV2/SCART

/HDMI1/HDMI2/VGA mode.

RATIO button

Press to switch to picture mode.

AUDIO button

Press to choose NICAM mode in ATV/To change audio

language in DVD/DTV mode.

Press to stop the playback/Switch between digital TV and digital radio mode in DTV.

- 6 -

RETURN SETUP

2.1.4 CONNECTION AND STARTING

HDMI 1/2 IN

S-VIDEO IN

YPBPR VIDEO IN

YPbPr or YCbCr video input port.

YPBPR AUDIO IN

YPbPr/ YCbCr audio input port.

AC Power input socket

220V AC power input.

VIDEO 1 IN

S-Video input port.

VIDEO 1/ S-VIDEO AUDIO IN

Used for ecternal video 1/ S-video audio input.

- 7 -

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