Disney md20080 schematic
MD20080
SERVICE MANUAL
COLOR TELEVISION RECEIVER
ORIGINAL
CHASSIS CODE B
Design and specifications are subject to change without notice.
SERVICING NOTICES ON CHECKING
As for the places which need special attentions,
they are indicated with the labels or seals on the
cabinet, chassis and parts. Make sure to keep the
indications and notices in the operation manual.
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
3. USE THE DESIGNATED PARTS
The parts in this equipment have the specific
characters of incombustibility and withstand
voltage for safety. Therefore, the part which is
replaced should be used the part which has
the same character.
Especially as to the important parts for safety
which is indicated in the circuit diagram or the
table of parts as a mark, the designated
parts must be used.
PUT PARTS AND WIRES IN THE
4.
ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING
There are parts which use the insulation
material such as a tube or tape for safety, or
which are assembled in the condition that
these do not contact with the printed board.
The inside wiring is designed not to get closer
to the pyrogenic parts and high voltage parts.
Therefore, put these parts in the original
positions.
5. TAKE CARE TO DEAL WITH THE
CATHODE-RAY TUBE
In the condition that an explosion-proof cathoderay tube is set in this equipment, safety is
secured against implosion. However, when
removing it or serving from backward, it is
dangerous to give a shock. Take enough care to
deal with it.
6. AVOID AN X-RAY1. KEEP THE NOTICES
Safety is secured against an X-ray by considering about the cathode-ray tube and the high
voltage peripheral circuit, etc.
Therefore, when repairing the high voltage peripheral circuit, use the designated parts and
make sure not modify the circuit.
Repairing except indicates causes rising of high
voltage, and it emits an X-ray from the cathoderay tube.
7.PERFORM A SAFETY CHECK AFTER
SERVICING
Confirm that the screws, parts and wiring which
were removed in order to service are put in the
original positions, or whether there are the
portions which are deteriorated around the
serviced places serviced or not. Check the
insulation between the antenna terminal or
external metal and the AC cord plug blades.
And be sure the safety of that.
(INSULATION CHECK PROCEDURE)
1.
Unplug the plug from the AC outlet.
2.
Remove the antenna terminal on TV and turn
on the TV.
3.
Insulation resistance between the cord plug
terminals and the eternal exposure metal
[Note 2] should be more than 1M ohm by
using the 500V insulation resistance meter
[Note 1].
4.
If the insulation resistance is less than 1M
ohm, the inspection repair should be
required.
[Note 1]
If you have not the 500V insulation
resistance meter, use a Tester.
[Note 2]
External exposure metal: Antenna terminal
Earphone jack
HOW TO ORDER PARTS
Please include the following informations when you order parts. (Particularly the CHASSIS CODE.)
1. MODEL NUMBER and CHASSIS CODE
You canfind it in the back of your unit.
2. PART NO. and DESCRIPTION
You can find it in your SERVICE MANUAL.
IMPORTANT
Inferior silicon grease can damage IC's and transistors.
When replacing an IC's or transistors, use only specified silicon grease (YG6260M).
Remove all old silicon before applying new silicon.
A1-1
ABOUT LEAD FREE SOLDER (PbF)
Distinction of PbF PCB:
PCBs (manufactured) using lead free solder will have a PbF printing on the PCB.
(Please refer to figures.)
Caution:
Pb free solder has a higher melting point than standard solder;
•
Typically the melting point is 50°F~70°F(30°C~40°C) higher.
Please use a soldering iron with temperature control and adjust it to 650°F ± 20°F (350°C ± 10°C).
In case of using high temperature soldering iron, please be carefull not to heat too long.
Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C).
•
All products with the printed circuit board with PbF printing must be serviced with lead free solder.
•
When soldering or unsoldering, completely remove all of the solder from the pins or solder area,
and be sure to heat the soldering points with the lead free solder until it melts sufficiently.
Recommendations
Recommended lead free solder composition is Sn-3.0Ag-0.5Cu.
A1-2
CONTENTS
SERVICING NOTICES ON CHECKING..........................................................................................................
HOW TO ORDER PARTS ...............................................................................................................................
IMPORTANT....................................................................................................................................................
ABOUT LEAD FREE SOLDER (PbF).............................................................................................................
CONTENTS .....................................................................................................................................................
GENERAL SPECIFICATIONS ........................................................................................................................
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF ANODE CAP .................................................................................................................
2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ...................................................................
SERVICE MODE LIST.....................................................................................................................................
CONFIRMATION OF HOURS USED ..............................................................................................................
WHEN REPLACING EEPROM (MEMORY) IC ...............................................................................................
ELECTRICAL ADJUSTMENTS .......................................................................................................................
BLOCK DIAGRAM ...........................................................................................................................................
PRINTED CIRCUIT BOARDS
MAIN/CRT/OPERATION/FRONT JACK/POWER SW/RELAY....................................................................
MAIN/CRT/OPERATION/FRONT JACK ......................................................................................................
SCHEMATIC DIAGRAMS
MICON/TUNER............................................................................................................................................
CHROMA/SIF/VIF/21PIN .............................................................................................................................
SOUND/AV ..................................................................................................................................................
DEFLECTION/CRT ......................................................................................................................................
TV POWER ..................................................................................................................................................
WAVEFORMS ..................................................................................................................................................
MECHANICAL EXPLODED VIEW ...................................................................................................................
MECHANICAL REPLACEMENT PARTS LIST ...............................................................................................
ELECTRICAL REPLACEMENT PARTS LIST .................................................................................................
A1-1
A1-1
A1-1
A1-2
A2-1
A3-1~A3-4
B1-1
B2-1, B2-2
C-1
C-1
C-1
D-1~D-5
E-1, E-2
F-1, F-2
F-3, F-4
G-1, G-2
G-3, G-4
G-5, G-6
G-7, G-8
G-9, G-10
H-1~H-3
I-1
J1-1
J2-1, J2-2
A2-1
GENERAL SPECIFICATIONS
5oC
0oC
0oC
60oC
G-1 TV CRT CRT Size / Visual Size 14 inch / 335.4mmV
G-2 Tuning Broadcasting System FRANCE+CCIR System B/G L
G-3 Power Power Source AC 230V AC 50Hz
G-4 Regulation Safety CE
G-5 Temperature Operation
G-6 Operating Humidity Less than 80% RH
G-7 On Screen Menu Yes
System CRT Type Normal
Color System PAL / SECAM / MESECAM
Speaker 2 Speaker
Sound Output MAX 0.5+0.5 W
PAL60Hz Yes
System Tuner and System 1Tuner
Receive CH Destination CCIR (W/HYPER), FRENCH CATV
Intermediate PAL,SECAM(U&VH),SECAM(VL)
Frequency Picture(FP) 38.9,38.9,34.4MHz
Auto Tuning Method All Band (Not CCIR CH Plan)
Preset CH 80
StereoTV Sound (Ext Audio Input Only) Yes
Tuner Sound Muting Yes
Power Consumption at AC
Protector Power Fuse Yes
Display Menu Type Disney Character
Picture Yes
Audio No
CH Tuning Yes
Language Yes
Clock Set No
On/Off Timer Set No
Pin Code Registration No
Nicam Auto Off No
Colour System No
Sound System No
AV2 Output Source No
Control Level Yes
Deflection 90 degree
Magnetic Field BV/BH +0.45G/0.18G
Position Ext
Size 3 Inch
Impedance 8 ohm
10%(Typical) -- W
Tuning System F-Synth
Input Impedance VHF/UHF 75 ohm
CH Coverage PAL:
Sound(FS) 33.4,32.4,40.9MHz
FP-FS 5.5,6.5,6.5MHZ
DC -
Stand by (at AC) 5 W at AC 230 V 50 Hz
Per Year -- kWh/Year
Safety Circuit Yes
IC Protector(Micro Fuse) No
Radiation CE
X-Radiation PTB
Storage
Contrast Yes
Brightness Yes
Color Yes
Tint No
Sharpness Yes
Bass No
Treble No
Balance No
BBE On/Off No
Stable Sound On/Off No
Manual Yes
Auto Yes
CH Allocation Yes
Volume Yes
Brightness Yes
Contrast Yes
Color Yes
Tint (NTSC Only) No
E2 - E4, X - Z+2, S1 - S10, E5 - E12,
S11 - S41, E21 - E69
SECAM:
F2-F4, FB-FQ,F21-F69
44 W at AC 230 V 50 Hz
+
~ +4
-2
~ +
A3-1
GENERAL SPECIFICATIONS
Sharpness Yes
Tuning Yes
Bass No
Treble No
Balance No
Nicam ST No
Tone 1/2 No
Pin Code No
AV Yes
Skip Yes
Channel Yes
Hotel Lock No
Sleep Timer Yes
Sound Mute Yes
G-8 OSD Language English French Spanish
G-9 Clock and Sleep Timer Max Time 120 Min
Timer Step 10 Min
On/Off Timer Program(On Timer / Off Timer) No
Wake Up Timer No
Timer Back-up (at Power Off Mode) more than -- Min Sec
G-10 Remote Unit RC-JP
Control Glow in Dark Remocon No
Format NEC
Custom Code 80-63 h
Power Source Voltage(D.C) 3V
Total Keys 24 Keys
Keys Power(Stand By) Yes
T'TEXT Keys TEXT / MIX / TV No
G-11 Features Auto Degauss Yes
Auto Shut Off Yes
Canal+ Yes
CATV Yes
Anti-theft No
Memory(Last CH) Yes
Memory(Last Volume) Yes
Back Light No
German Italian
UM size x pcs UM-4 x 2 pcs
1 Yes
2 Yes
3 Yes
4 Yes
5 Yes
6 Yes
7 Yes
8 Yes
9 Yes
0 Yes
TV/AV Yes
CH Up Yes
CH Down Yes
Volume Up / + Yes
Volume Down / - Yes
Quick View Yes
Sleep Yes
Info(CH Call) Yes
Normal No
Menu Yes
Enter No
Mute Yes
Fine Tuning + Yes
Fine Tuning - Yes
Skip Yes
Tone 1/2 No
CH Up / Page Up No
CH Down / Page Down No
Red No
Green No
Yellow / Fine Tuning - No
Cyan / Fine Tuning + No
F/T/B(Expand) / Normal No
Reveal / Skip No
Display Cancel No
Reset No
Reset / Tone 1/2 No
Hold / Status No
Sub Page / Quick View No
A3-2
GENERAL SPECIFICATIONS
BBE No
Auto Search Yes
CH Allocation Yes
Channel Lock No
Just Clock Function No
Game Position No
CH Label No
VM Circuit No
Full OSD No
T'Text No
Premiere No
Comb Filter No
Auto CH Memory Yes
Auto Set Up No
Stable Sound No
FBT Leak Test Protect No
Hotel Lock No
Power On Memory Yes
G-12 Accessories Owner's Manual Language Einglish/Germany/French/Spanish
Remote Control Unit Yes
Rod Antenna
Loop Antenna
U/V Mixer
DC Car Cord (Center+)
Guarantee Card Yes
Warning Sheet
Circuit Diagram
Antenna Change Plug
Service Facility List
Important Safeguard
Dew/AHC Caution Sheet
AC Plug Adapter
Short Instbook (Spa/Por/IT/Dutch/Fin/Swe/Dan/Nor)
Quick Set-up Sheet
Battery Yes
AC Cord
AV Cord (2Pin-1Pin)
Registration Card
Safety Strap
Printed Matter for Disney
300 ohm to 75 ohm Antenna Adapter
G-13 Interface Switch Front Power No
Rear AC/DC No
Indicator Power No
Terminals Front Video Input RCA x1
Rear Video Input(Rear1)
Text type Text Language -
Lines
Portuguese/Italian/Dutch/Finnish
w/Guarantee Card
Poles Terminal -
Terminal -
UM size x pcs UM-4 x 2 pcs
OEM Brand
System Select No
Main Power SW Yes
Sub Power No
Channel Up Yes
Channel Down Yes
Volume Up Yes
Volume Down Yes
Menu Yes
TV/AV Yes
TV/CATV Selector No
Degauss No
Main Power SW No
Stand-by Yes
On Timer No
Audio Input RCA x2
Other Terminal
Video Input(Rear2)
Audio Input(Rear1)
Swedish/Danish/Norwegian
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Head Phone
No
No
No
A3-3
GENERAL SPECIFICATIONS
s
Audio Input(Rear2)
Video Output
Audio Output
Euro Scart(21Pin) Yes ( x1 )
Component Input
Diversity No
Ext Speaker No
DC Jack 12V(Center +) No
VHF/UHF Antenna Input
AC Outlet No
G-14 Set Size Approx. W x D x H (mm) 401.5 x 371 x 465.5
w/o Speaker,Legs Approx. W x D x H (mm)
G-15 Weight Net (Approx.) 11.0kg
Net w/o Speaker,Legs Approx. 9.5 kg
Gross (Approx.) 13.5kg
G-16 Carton Master Carton
Content ---Material --
Dimensions W x D x H(mm) -- x -- x --
Description of Origin
Gift Box Yes
Material Double/Full Color
Dimensions W x D x H(mm) 493 x 423 x 465
Design As per Buyer's
Description of Origin
Drop Test
Height (cm) 62
Container Stuffing
G-17 Material Cabinet Cabinet Front PS 94HB
Cabinet Rear PS 94HB
Cover Yes
PCB Non-Halogen Demand
Eyelet Demand
G-18 Environment Environmental
Pb-free Phase3 (Phase3A)
WEEE Yes
Din Type
401.5 x 371 x 350
Natural Dropping At 1 Corner / 3 Edges / 6
640
Green procurement of ORION
No
No
No
No
( 24.3lbs)
( 20.9lbs )
( 29.8lbs)
No
Sets
/--
No
No
Surfaces
Sets/40' container
No
No
A3-4
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF ANODE CAP
Read the following NOTED items before starting work.
After turning the power off there might still be a potential
*
voltage that is very dangerous. When removing the
Anode Cap, make sure to discharge the Anode Cap's
potential voltage.
Do not use pliers to loosen or tighten the Anode Cap
*
terminal, this may cause the spring to be damaged.
REMOVAL
1. Follow the steps as follows to discharge the Anode Cap.
(Refer to Fig. 1-1.)
Connect one end of an Alligator Clip to the metal part of
a flat-blade screwdriver and the other end to ground.
While holding the plastic part of the insulated screwdriver,
touch the support of the Anode with the tip of the
screwdriver.
A cracking noise will be heard as the voltage is discharged.
GND on the CRT
3. After one side is removed, pull in the opposite direction to
remove the other.
NOTE
Take care not to damage the Rubber Cap.
INSTALLATION
1. Clean the spot where the cap was located with a small
amount of alcohol. (Refer to Fig. 1-3.)
Location of Anode Cap
Fig. 1-3
NOTE
Confirm that there is no dirt, dust, etc. at the spot where
the cap was located.
2.3.Arrange the wire of the Anode Cap and make sure the
wire is not twisted.
Turn over the Rubber Cap. (Refer to Fig. 1-4.)
Screwdriver
Alligator Clip
GND on the CRT
Flip up the sides of the Rubber Cap in the direction of the
2.
arrow and remove one side of the support.
(Refer to Fig. 1-2.)
Rubber Cap
CRT
Support
Support
CRT
Fig. 1-1
Fig. 1-2
Fig. 1-4
4. Insert one end of the Anode Support into the anode button,
then the other as shown in Fig. 1-5.
CRT
Support
Fig. 1-5
5.6.Confirm that the Support is securely connected.
Put on the Rubber Cap without moving any parts.
B1-1
DISASSEMBLY INSTRUCTIONS
2.
REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
REMOVAL
Put Masking Tape (cotton tape) around the Flat Package
1.
IC to protect other parts from any damage.
(Refer to Fig. 2-1.)
NOTE
Masking is carried out on all the parts located within
10 mm distance from IC leads.
When IC starts moving back and forth easily after
3.
desoldering completely, pickup the corner of the IC using
a tweezers and remove the IC by moving with the IC
desoldering machine. (Refer to Fig. 2-3.)
NOTE
Some ICs on the PCB are affixed with glue, so be
careful not to break or damage the foil of each IC
leads or solder lands under the IC when removing it.
Blower type IC
desoldering
machine
Masking Tape
(Cotton Tape)
Heat the IC leads using a blower type IC desoldering
2.
IC
machine. (Refer to Fig. 2-2.)
NOTE
Do not rotate or move the IC back forth until IC can
move back and forth easily after desoldering the
leads completely.
Blower type IC
desoldering machine
Fig. 2-1
Tweezers
IC
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
5.
Shield Wire. (Refer to Fig. 2-4.)
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Fig. 2-3
Braided Shield Wire
Soldering Iron
IC
Fig. 2-2
IC pattern
Fig. 2-4
B2-1
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