BBK LD3216DK User manual

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
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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
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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.
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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.
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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
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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
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2.1.2 Set list
(1) Panel controls and indication
2.1.3 CONTROLS AND FUNCTIONS
Composite video/audio input
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(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.
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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.
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