Memorex MT1125SM User manual

SERVICE MANUAL
Design and specifications are subject to change without notice.
MT1125
ORIGINAL
MFR’S VERSION A
COLOR TELEVISION RECEIVER

6. AVOID AN X-RAY1. KEEP THE NOTICES
5. TAKE CARE TO DEAL WITH THE
CATHODE-RAY TUBE
In the condition that an explosion-proof cathode-
ray 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.
Safety is secured against an X-ray by consider-
ing about the cathode-ray tube and the high
voltage peripheral circuit, etc.
Therefore, when repairing the high voltage pe-
ripheral 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 cathode-
ray tube.
Please include the following informations when you order parts. (Particularly the VERSION LETTER.)
1. MODEL NUMBER and VERSION LETTER
The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be
found at the end of the SERIAL NUMBER.
2. PART NO. and DESCRIPTION
You can find it in your SERVICE MANUAL.
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.
IMPORTANT
HOW TO ORDER PARTS
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
ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING
4.
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.
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.
2.
3.
4.
Unplug the plug from the AC outlet.
Remove the antenna terminal on TV and turn
on the TV.
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].
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
A1-1

CONTENTS
A2-1
SPECIFICATIONS....................................................................................................................................
SERVICING NOTICES ON CHECKING ...................................................................................................
HOW TO ORDER PARTS........................................................................................................................
IMPORTANT ............................................................................................................................................
CONTENTS ..............................................................................................................................................
GENERAL SPECIFICATIONS..................................................................................................................
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF ANODE CAP.........................................................................................................
2. REMOVAL OF DEFLECTION YOKE ...........................................................................................
SERVICE MODE LIST .............................................................................................................................
CONFIRMATION OF USING HOURS.......................................................................................................
NOTE FOR THE REPLACING OF MEMORY IC .....................................................................................
ELECTRICAL ADJUSTMENTS................................................................................................................
MAJOR COMPONENTS LOCATION GUIDE ..........................................................................................
BLOCK DIAGRAM...................................................................................................................................
PRINTED CIRCUIT BOARDS
MAIN/CRT ......................................................................................................................................
SCHEMATIC DIAGRAMS
MICON/TUNER ..............................................................................................................................
CHROMA ......................................................................................................................................
DEFLECTION/CRT ........................................................................................................................
POWER ..........................................................................................................................................
SOUND AMP ..................................................................................................................................
WAVEFORMS .........................................................................................................................................
MECHANICAL EXPLODED VIEW ...........................................................................................................
MECHANICAL REPLACEMENT PARTS LIST........................................................................................
ELECTRICAL REPLACEMENT PARTS LIST ........................................................................................
COVER
A1-1
A1-1
A1-1
A2-1
A3-1~A3-4
B-1
B-2
C-1
C-1
C-1
D1-1~D2-1
D3-1
E-1, E-2
F-1~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

GENERAL SPECIFICATIONS
A 3-1
G-1.Outline of the Product
25 inch( 626 mmV):Measured diagonally
Color CRT 100 degree deflection
G-2.Broadcasting System
US System M
G-3.Color System NTSC PAL SECAM or Monochrome signal
G-4.NTSC Playback(PAL 60Hz) Yes No
G-5.NTSC 3.58+4.43/PAL60Hz Yes No
G-6.Antenna Input Impedance
VHF/UHF 75 ohm unbalanced
G-7.Tuner and Receiving Contactless Electric tuner 1Tuner System
2Tuner System
channel Tuner Oscar(W/O HYPER) Oscar(W/ HYPER)
France CATV) Others
Receiving channel
VHF (LOW) 2 ch~ 6 ch
(HIGH) 7 ch~ 13 ch
(CATV) A5 ch~ I ch J ch~ W+29 ch GGG ch~ W+84 ch
UHF 14 ch~ 69 ch
Tuning System
Frequency syn. Voltage syn. Others
G-8.Preset Channel
-- channels
G-9.Intermediate Frequency
Picture(fP) 45.75 MHz MHz MHz
Sound (fS) 41.25 MHz MHz MHz
fP-fS 4.50 MHz MHz MHz
G-10.Stereo/Dual TV Sound
Yes( NICAM GERMAN USA JAPAN) No
G-11.Tuner Sound Muting Yes No
G-12.Power Source 120 V AC 50Hz AC 60Hz
G-13.Power Consumption: 130 W at AC 120 V 60 Hz
WatDC V
Stand by: 8 W at AC 120 V 60 Hz
Per Year: - kWh / Year
G-14.Dimensions(Approx.)
618 mm(W) 504 mm(D) 525 mm(H)
G-15.Weight(Approx.) Net : 27 kg ( 59.9 lbs)
Gross: 29 kg ( 64.3 lbs)
G-16.Cabinet Material
Cabinet Front: PS 94HB DECABROM
AB S 94V2 NON-DECA
94V0
Back Panel: PS 94HB DECABROM
AB S 94V2 NON-DECA
94V0

GENERAL SPECIFICATIONS
A 3-2
G-17.Protector: Power Fuse
G-18.Regulation
Safety
UL CSA SAA SI CE SEV
BS NF NEMKO FEMKO DEMKO IEC65
SEMKO NZ HOMOLO SABS CNS SISIR
NOM AS3159 DENTORI UNE GOST NONE
Radiation
FCC DOC FTZ PTT CE SEV
SABA SI NF NZ HOMOLO UNE
CNS CISPR13 DENTORI AS/NZS NONE
X-Radiation
PTB DHHS HWC DENTORI NONE
G-19.Temperature
Operation 5 ºC~ 40 ºC
Storage -20 ºC~ 60 ºC
G-20.Operating Humidity Less than 80 %RH
G-21.Clock and Timer
Sleep Timer Yes Max 120 Min.( 10 Min. Step) No
On/Off Timer Yes Programs No
Wake Up Timer Yes Programs No
G-22.Timer back up Time
More than -- Minutes (at Power Off Mode)
G-23.Terminals VHF/UHF Antenna Din Type F-Type France Type
Video Input(Front) Phono Jack (RCA ø8.3) BNC
Video Input(Rear) Phono Jack (RCA ø8.3) BNC
Video Output(Rear) Phono Jack (RCA ø8.3) BNC
Audio Input(Front) Phono Jack (RCA ø8.3)
Audio Input(Rear) Phono Jack (RCA ø8.3)
Audio Output(Rear) Phono Jack (RCA ø8.3)
21 Pin DC Jack(Center +) Ear Phone Jack(ø3.5)
Head Phone Jack(ø3.5) AC Outlet Ext Speaker
Diversity S Input(Front) S Input(Rear)
G-24.Indicator Power Stand By On Timer NONE
( ) ( ) ( )
G-25.Display
On Screen Display
Menu Clock Set( 12H 24H) System Selec On/Off Timer
Hotel Lock Area Code CH Tuning
Sound 1/2 NICAM Auto Off Picture
Guide CH Set Audio Language
CATV Pin Code Registration V-Chip
Control Level Sound Brightness Contrast
Color Tint(NTSC Only) Sharpness
Tuning Bass Treble
Balance Back Light
Stereo,Audio Output,Bilingual Picture Menu
Stereo,Audio Output,SAP Mid Night Theater
Stereo,Audio Output GAME
CH/AV Clock Pin Code Hotel Lock
Sleep Timer Sound Mute Channel

GENERAL SPECIFICATIONS
A 3-3
G-26.OSD Language
Eng Ger Fre Spa Ita Por Jpn
OSD Language Setting
Eng Ger Fre Spa Ita Por Jpn
Not Applicable
G-27.Speaker
1.5 x 2.7 inches Imp. 32 ohm x 2 pcs
Max 2.5 + 2.5 W (Typical)
10% 2.0 + 2.0 W (Typical)
G-28.EXT Speaker
Yes -- W Imp -- ohm
G-29.Carton
Master Carton: Need No Need
Content: ---- Set
Material: ---- / ---- Corrugated Carton
Dimensions: ---- mm(W) ---- mm(D) ---- mm(H)
Description of Origin Yes No
Gift Box
Material AB Double/Brown Corrugated Carton ( with Photo Label)
AB Double/White Corrugated Carton ( with Photo Label)
AB Double Full Color Carton W/Photo
Dimensions: 689 mm(W) 577 mm(D) 620 mm(H)
Design: As Per BUYER 's
Description of Origin: Yes No
Drop Test Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces
Height 25cm 31cm 46cm 62cm 80cm
Container Stuffing: 204 Sets / 40' container
G-30.Accessories
Owner's Manual ( W/Guarantee Card) [ English/French ]
AC Plug Adapter Channel Film
Battery (UM- 4 x 2 ) Remote Control Unit
Safety Tip Toll Free Insert Sheet
Guarantee Card Audio-Video Cord (RCA)
Registration Card Warning Sheet
Quick Set-Up Sheet Schematic Diagram
Information Sheet U/V Mixer
75 ohm Coaxial Cable ( Single Shield Double Shield)
300 ohm to 75 ohm VHF Antenna Adaptor
21pin Cable Car Cord
Rod Antenna
One Pole Two Pole ( F-Type Din Type France Type)
Loop Antenna ( F-Type Din Type France Type)
G-31.Other Features
Auto Degauss Auto Search Full OSD
Auto Shut Off CH Allocation Premiere
Canal+ SAP Comb Filter
CATV(181CH) Channel Lock Auto CH Memory
Anti-Theft Just Clock Function Hotel Lock
Rental Game Position Fastext
Unitext TopText Closed Caption
Picture Menu Mid Night Theater V-Chip

GENERAL SPECIFICATIONS
A 3-4
G-32.Switch
Front Power(Tact) Channel Up/Reset Volume Up/Set Up
System Select Channel Down/Enter Volume Down/Set Down
Main Power SW Sub Power Menu:Vol UP + Vol Down
Rear AC/DC TV/CATV Selector
Degauss Main Power SW
G-33.Magnetic Field
BV : +0.45G BV : +0.35G BV : +0.25G
BH : 0.18G BH : 0.30G BH : 0.30G
BV : -0.15G BV : -0.25G BV : -0.50G
BH : 0.15G BH : 0.15G BH : 0.30G
G-34.Remote Control Unit: RC- 74
Power Source: D.C 3 V Battery UM - 4 x 2
Power Quick View TV/AV
Stand By Status Bar Select
0 Time Select PAL/SECAM
1 Time Set Volume Up
2 Muting Volume Down
3 CH Skip CH Call
4 CH1/CH2 CH Down
5 Channel CH Up
6 Text/Mix/TV CH Down/Page Down
7 Display Cancel CH Up/Page Up
8 Initial P age +/-
9 Store Program
10 Reveal F/T/B
11 Sleep Hold
12 Aft/Skip List
1Preset Rotate
25.5/6.5MHz Browse
0/10 Auto Memory Std/Auto
Tone 1/2 Auto Memory
Info Call Band Select
Mono/Auto Reset Search
TV/Caption/Text Menu Clock/Program
Expand Enter Clock/Set
Red Add Ch Set
Cyan Delete Set +
Normal Yellow Set -
Color System Random Green
Wide Selecy Tuning Up/Time Text Nicam/Mono
Auto Wide On/Off Tuning Down/Reset Tone A/B
Picture Position Navi FM Transmitter
Direct Change/Auto Search Back Light
Picture Menu Mid Night Theater Stereo/Mono

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.
Flip up the sides of the Rubber Cap in the direction of the
arrow and remove one side of the support.
(Refer to Fig. 1-2.)
2.
DISASSEMBLY INSTRUCTIONS
GND on the CRT
Screwdriver
Alligator Clip
Support CRT
GND on the CRT
Rubber Cap
CRT Support
Fig. 1-1
Fig. 1-2
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.)
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.)
Location of Anode Cap
Fig. 1-3
Fig. 1-4
B-1

4. Insert one end of the Anode Support into the anode button,
then the other as shown in Fig. 1-5.
5.
6. Confirm that the Support is securely connected. Put on the Rubber Cap without moving any parts.
DISASSEMBLY INSTRUCTIONS
CRT Support Fig. 1-5
2. REMOVAL OF DEFLECTION YOKE
(Refer to Fig. 2-1)
1.
2.
3.
4.
5.
Loosen the screw 1.
Remove the Convergence • Purity Magnet in the
direction of arrow (A).
Loosen the screw 2.
Remove the 3 Wedges.
Remove the Deflection Yoke in the direction of arrow
(B).
Wedge
Wedge
Deflection Yoke
Convergence •
Purity Magnet
2
1
(A)
(B)
Fig. 2-1
INSTALLATION
Install new Deflection Yoke in reverse steps of REMOVAL.
NOTE
After adjusting the purity and the convergence, fix the
screw 2and lock the wedges.
B-2

SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
Set Key Remocon Key Operations
VOL. (-) MIN 0Releasing of V-CHIP PASSWORD.
VOL. (-) MIN 1 Initialization of the factory.
NOTE: Do not use this for the normal servicing.
POWER ON total hours is displayed on the screen.
Refer to the "CONFIRMATION OF USING HOURS".
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "NOTE FOR THE REPLACING OF MEMORY IC".
VOL. (-) MIN 6
VOL. (-) MIN 8 Writing of EEPROM initial data.
NOTE: Do not use this for the normal servicing.
NOTE FOR THE REPLACING OF MEMORY IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to TABLE 1.
CONFIRMATION OF USING HOURS
POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.
1.
2.
3.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and the Channel
button (6) on the remote control for more than 2 seconds.
After the confirmation of using hours, turn off the power.
INIT 00 83
0010
CRT ON
ADDRESS DATA
FIG. 1
Initial setting content of MEMORY IC.
POWER ON total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)
VOL. (-) MIN Display of the Adjustment MENU on the screen.
Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).
9
NOTE: No need the setting for after INI 09.
Table 1
DATA
ADDRESS INI
00 INI 01 INI 02 INI 03 INI 04 INI 05 INI 06 INI 07 INI 08 INI 09
88 6C 80 00 00 00 00 98 07 04
1.
2.
3.
4.
5.
6.
7.
8.
9.
The unit will now have the correct DATA for the new MEMORY IC.
Enter DATA SET mode by setting VOLUME to minimum.
Press both VOL. DOWN button on the set and the Channel button (6) on the remote control for more than 2 seconds.
ADDRESS and DATA should appear as FIG 1.
ADDRESS is now selected and should "blink". Using the SET + or - keys on the remote, step through the ADDRESS until
required ADDRESS to be changed is reached.
Press ENTER to select DATA. When DATA is selected, it will "blink".
Again, step through the DATA using SET + or - until required DATA value has been selected.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
Repeat steps 4 to 7 until all data has been checked.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
C-1

ELECTRICAL ADJUSTMENTS
1. BEFORE MAKING ELECTRICAL
ADJUSTMENTS
CAUTION
•
•
•
•
Use an isolation transformer when performing any
service on this chassis.
Before removing the anode cap, discharge electricity
because it contains high voltage.
When removing a PCB or related component, after
unfastening or changing a wire, be sure to put the wire
back in its original position.
Inferior silicon grease can damage IC's and transistors.
When replacing IC's and transistors, use only specified
silicon grease (YG6260M).
Remove all old silicon before applying new silicon.
1-1:Prepare the following measurement tools for
electrical adjustments.
1. Synchro Scope
2. Digital Voltmeter
2. BASIC ADJUSTMENTS
On-Screen Display Adjustment
In the condition of NO indication on the screen.
Press both VOL. DOWN button on the set and the
Channel button (9) on the remote control for more than
2 seconds to appear the adjustment mode on the
screen as shown in Fig. 2-1.
Fig. 2-2
1. RF AGC DELAY
2. VIDEO LEVEL
3. FM LEVEL
4. OSD H
5. CUT OFF
6. X-RAY
7.
8. 0. RETURN
2-2: CUT OFF
1.
2.
3.
4.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 2-1 and
press the channel button (5) on the remote control.
The Fig. 2-2 appears on the display.
Press the channel button (5) on the remote control.
Adjust the Screen Volume until a dim raster is obtained.
2-3: WHITE BALANCE
NOTE:
Adjust after performing adjustments in section 2-2.
1.
2.
3.
Receive the color bar pattern.
Activate the adjustment mode display of Fig. 2-1 and
press the channel button (2) on the remote control.
The Fig. 2-3 appears on the display.
Adjust the adjustment mode display of Fig. 2-3 until the
white color is looked like a white.
Fig. 2-3
1. AKB AUTO
2. R. BIAS
3. G. BIAS
4. B. BIAS
5. R. DRIVE
6. G. DRIVE
7. B. DRIVE
8. AGC AUTO 0. RETURN
2-4: SUB BRIGHTNESS
1.
2.
3.
4.
5.
Receive the monoscope pattern.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 2-1 and
press the channel button (4) on the remote control.
The Fig. 2-4 appears on the display.
Press the channel button (1) on the remote control.
Press the VOL. UP/DOWN button on the remote control
until the white 10% is starting to be visible.
Fig. 2-4
1. BRIGHT
2. CONTRAST
3. COLOR
4. TINT
5. SHARPNESS
6. OSD CONT
7.
8. 0. RETURN
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
NOTE
Use the Channel buttons (1-8) on the remote control to
select the options shown in Fig. 2-1.
Press the Channel button (0) on the remote control to
end the adjustments.
1. H/V
2. AKB
3. COLOR TEMP
4. PICTURE
5. OTHERS
6. TEST PATTERN
7. STEREO/SAP
8. (VOL TEST) 0. END Fig. 2-1
2-1: RF AGC DELAY
1.
2.
3.
4.
5.
Receive an 80dB monoscope pattern.
Connect the digital voltmeter between the pin 2 of
CP101 and the pin 6 (GND) of CP101.
Activate the adjustment mode display of Fig. 2-1 and
press the channel button (5) on the remote control.
The Fig. 2-2 appears on the display.
Press the channel button (1) on the remote control.
Press the VOL. UP/DOWN button on the remote control
until the digital voltmeter is 2.0 ±0.05V.
D1-1

ELECTRICAL ADJUSTMENTS
2-5: SUB TINT/SUB COLOR
1.
2.
3.
4.
5.
6.
7.
8.
Receive the color bar pattern.
Connect the synchro scope to pin 1 of CP101 and the
pin 6 (GND) of CP101.
Activate the adjustment mode display of Fig. 2-1 and
press the channel button (4) on the remote control.
The Fig. 2-4 appears on the display.
Press the channel button (4) on the remote control.
Press the VOL. UP/DOWN button on the remote control
until the waveform becomes as shown in Fig. 2-5.
Press the CH DOWN button once to set to "COLOR"
mode.
Adjust the LEVEL "A" section of Blue to the LEVEL "D"
section of White by pressing the VOL. UP/DOWN button
on the remote control. (Refer to Fig. 2-6)
If the LEVEL "A" section through "C" section are not the
same compared with "D" section, adjust the LEVEL again.
D1-2
Fig. 2-5
"D" "C" "B" "A" Fig. 2-6
2-6: FOCUS
1.
2. Receive an 80dB monoscope pattern. Adjust the Focus Volume until picture is distinct.
2-7: VERTICAL POSITION
1.
2.
3.
Receive the color bar pattern.
Using the remote control, set the brightness and
contrast to normal position.
Adjust the VR401 until the horizontal line of the color
bar comes to approximate center of the CRT.
2-8: VERTICAL SIZE
1.
2.
3.
4.
5.
Receive the crosshatch pattern.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 2-1 and
press the channel button (1) on the remote control.
The Fig. 2-7 appears on the display.
Press the channel button (3) on the remote control.
Press the VOL. UP/DOWN button on the remote control
until the center of crosshatch is square.
Fig. 2-7
1. H. PHASE
2. H. BLK
3. V. SIZE
4. V. POSI
5. V. LIN
6. V. SC
7. V. COMP
8. (H FREQ) 0. RETURN
2-9: HORIZONTAL PHASE
1.
2.
3.
4.
5.
Receive the color bar pattern.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 2-1 and
press the channel button (1) on the remote control.
The Fig. 2-7 appears on the display.
Press the channel button (1) on the remote control.
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on right
and left becomes minimum.
2-10: OSD HORIZONTAL
1.
2.
3.
4.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 2-1 and
press the channel button (5) on the remote control.
The Fig. 2-2 appears on the display.
Press the channel button (4) on the remote control.
Press the VOL. UP/DOWN button on the remote control
until the difference of A and B becomes minimum.
[ TV ]
OSD H
BFig. 2-8 A

ELECTRICAL ADJUSTMENTS
2-11: VCO FREERUN
1.
2.
3.
Receive an 80dB monoscope pattern.
Connect the digital voltmeter between the TP201 and
the Ground.
Adjust the L205 until the digital voltmeter is 3.1 ±0.05V.
2-12: SEPARATION 1, 2
1.
2.
3.
4.
5.
6.
7.
Receive the stereo broadcasting signal.
Connect the AC voltmeter to CP351 through stereo filter
(L=400Hz, R=2KHz).
Activate the adjustment mode display of Fig. 2-1 and
press the channel button (7) on the remote control.
The Fig. 2-9 appears on the display.
Press the channel button (2) on the remote control.
Press the VOL. UP/DOWN button on the remote control
until the output of L-CH and R-CH become minimum.
Press the CH UP button once to set to "SEPARATION
2" mode.
Press the VOL. UP/DOWN button on the remote control
until the output of L-CH and R-CH become minimum.
Fig. 2-9
1. LEVEL ADJ
2. SEPARATION 1
3. SEPARATION 2
4.
5.
6.
7.
8. 0. RETURN
D1-3

ELECTRICAL ADJUSTMENTS
3.
1.
2.
3.
1.
2.
3.
4.
5.
6.
7.
8.
3-2: PURITY
NOTE
Adjust after performing adjustments in section 3-1.
1.
2.
3.
4.
5.
Receive the green raster pattern from color bar
generator.
Adjust the pair of purity magnets to center the
color on the screen.
Adjust the pair of purity magnets so the color at the
ends are equally wide.
Move the deflection yoke backward (to neck side)
slowly, and stop it at the position when the whole
screen is green.
Confirm red and blue colors.
Adjust the slant of the deflection yoke while watching the
screen, then tighten the fixing screw.
DEFLECTION YOKE
DEFLECTION YOKE SCREW
MAGNET SCREW
PURITY MAGNETS
6 POLE MAGNETS
4 POLE MAGNETS
Fig. 3-1
PURITY AND CONVERGENCE
ADJUSTMENTS
NOTE
NOTE
3-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT)
Tighten the screw for the magnet. Refer to the adjusted
CRT for the position. (Refer to Fig. 3-1)
If the deflection yoke and magnet are in one body,
untighten the screw for the body.
Receive the green raster pattern from the color bar
generator.
Slide the deflection yoke until it touches the funnel
side of the CRT.
Adjust center of screen to green, with red and blue on the
sides, using the pair of purity magnets.
Switch the color bar generator from the green raster
pattern to the crosshatch pattern.
Combine red and blue of the 3 color crosshatch pattern
on the center of the screen by adjusting the pair of
4 pole magnets.
Combine red/blue (magenta) and green by adjusting the
pair of 6 pole magnets.
Adjust the crosshatch pattern to change to white
by repeating steps 6 and 7.
Turn the unit on and let it warm up for at least 30
minutes before performing the following adjustments.
Place the CRT surface facing east or west to reduce the
terrestrial magnetism.
Turn ON the unit and demagnetize with a Degauss Coil.
Adjust after performing adjustments in section 3-2.
3-3: STATIC CONVERGENCE
1.
2.
3.
3-4: DYNAMIC CONVERGENCE
NOTE
Adjust after performing adjustments in section 3-3.
1.
2.
Adjust the differences around the screen by moving
the deflection yoke upward/downward and right/left.
(Refer to Fig. 3-2-a)
Insert three wedges between the deflection yoke and
CRT funnel to fix the deflection yoke.
(Refer to Fig. 3-2-b)
R G B
R
G
B
Fig. 3-2-a
WEDGE WEDGE
WEDGE
WEDGE POSITION
Fig. 3-2-b
R G B
R
G
B
UPWARD/DOWNWARD SLANT RIGHT/LEFT SLANT
Receive the crosshatch pattern from the color bar
generator.
Combine red and blue of the 3 color crosshatch pattern
on the center of the screen by adjusting the pair of
4 pole magnets.
Combine red/blue (magenta) and green by adjusting the
pair of 6 pole magnets.
D2-1

D3-1
MAJOR COMPONENTS LOCATION GUIDE
TU001
FOCUS VOLUME
SCREEN VOLUME
FB401
CP101
MAIN
VR401
L205
TP201
CP351

REMOCON
BLOCK DIAGRAM
14
13
12
18
17
RGB OUTSW
19
V. SYNC
SEP.
1st
AFC 2nd AFC H OUT 30
VER C/D 26
54
VIDEO
SW
77
79
78 VIDEO
AMP
VIDEO
DET 56
IF/RF AGC
DRIVE 69
FM
DET
AUDIO
SW 73
CF201
SAW FILTER
49
H. SYNC
SEP.
AGCIF
TU001
11 1
CHROMA
IC201 LA76814M-MPB
PUMP UP
AMP
+
-
7245
V-OUT
IC401 LA7841
IC351 AN5277
SPEAKER
Q801
RED OUT
Q803
GREEN OUT
Q802
BLUE OUT
CRT
11 68
RGB
Heater F7
19R
20G
21B
15CVIN
MICON
IC101 OEC3041A
10
HV
F
S
FB401
FBT
9
1
Q402
H. DRIVE
Q401
H. OUTPUT
DY
Q101
V-BUFFER
17-VS
Q102
H-BUFFER
18-HS
31
5V REG.
IC402
KIA7805PI
+5V
5
XT1
6
XT2
X101
32.768KHz
X-RAY
TEST SW
Q403
3
POWER REG.
IC501
STR30110
D501-D504
RECTIFIER
13
F501
AC IN
25 L501
DEGAUSS COIL
L502
X-RAY
3
POWER SW
Q104
POWER ON40
3
RESET
IC104 PST600C
+5V
TV MUTE
34
16
10
47
X601
3.579545MHz
VIF
AMP
LIM
AMF
SOUND
-RES13
DC
VOL
Q604, Q605
VIDEO
BUFFER
8
67
Q602
BUFFER
2
1
9V REG
IC601
KIA78L09BP
1
RESET SW
Q105
32 OS101 1
2
3
5
X-RAY SW
Q103
+8V
+5V
+5V
2
33
3
E-1 E-2
POWER
VOL. UP
KEY110
CH. UP
VOL. DOWN
CH. DOWN
VR401
V.POSI
KEY2
11
7
9
12 SPEAKER
TONE
AMP2
14
19
2
7
TONE CONTROL
IC705 M62420SP
TONE
AMP1
14
22
21
MTS DECORDER
IC701 AN5828NS
75
SOUND_R SOUND_L

IMPORTANT: FOR SERVICE WORK ALWAYS USE
MAINS ISOLATING TRANSFORMER, CHASSIS IS LIVE.
(IRRESPECTIVE OF POLARITY OF MAINS PLUG)
IMPORTANT:POUR TOUTE REPARATION UTILISEZ TOUJOURS
LE TRANSFORMATEUR ISOLANT D' ALIMENTATION, LE CHASSIS EST SOUS TENSION (QUELLE QUE SOIT LA POLARITE DE LA PRISE D' ALIMENTATION).
PRINTED CIRCUIT BOARDS
MAIN/CRT (INSERTED PARTS)
SOLDER SIDE
F-1 F-2
SW105
SW104
SW103
SW102
C123
TU001
W061
C204
R601
R602
C635
D603
W057
C215
C620
C624
C627
C217
Q602
D606
C644
R604
R625
R626
R643
C637
C615
C617
R607
R605
R609
C004
CF201_1
R614
R649
L205
IC103
R627
R120
C611
C608
C609
C619
R648
C214
C213
C616
C002
C614
C628
D602
D610
W059
R615
C625
IC601
W060
C605
C623
C649
Q604 W033
R660
C211
C203
C201
C646
TP201
C651
D609
C652
Q605
C202
C653
W058 D607
W045
X601
W819
CP101
R002
R001
D001
R136
R141
R145
R132
R130
C134
Q103
Q104
IC199
W047
C121
C111
C102
Q102
Q101
W043
W044
W046
C105
R110
IC104
C120
D101
X101
C101
C107
C131
C103
W048
L704
C777
IC705
C757
C761
R753
C764
C776
C762
C765
C780
C782
C781
C749
C748
R702
R701
C740
C720
C716
C714
C731
C722
C709 C730
C719
C715
C713 C708
W052
W029
CP351
IC351
W034
HS351
C358
C353
C357
W809
R611
W062
W041
SW101
FH501
FH502 F501
RY101
TH501
C133
D126
CP501
L501
C132
C503
R177
C440
D125
D502
D501
C504
D503
D504
R502
CP502
R449
IC501
IC401
IC402
T401_1
C443
R427
C437
C418
D403
W002
W004
R433
R515
R429_1
C507
C448
TP501
C430
L406
C434
D411
R428
C403
C420
R422
CP803A
R506
R509
R401
R405
R408
R508
C519
R503
C417
R418
C427
R417
R416
C429
C425
C415
R414_1
R407_1
CP401_1 W807
C506_1
R446
C446 C439
Q402
W009
R448
R447
W031
W024
Q403
W030
R424
W010
W032
R443_2
D127
Q401
HS401
HS501
W818
W003
W821
W019
W016
W018
W040
W050
W049
W023
R133
C001
D611
W805
W028
W026
C626
R421
R409
R445
L601
W055
W035
Q105
W015
R432
W056
R131
R814
CP806
TP022
TP024
TP023
Q801
Q802
Q803
R806
R804
R802
R807
R805
R803
CP801_1
C806_1
R816
CC004
R813
R809
C804_1
R811
C805_1
C801
C807
R815
J801
CP803B
W006
W806
W802
W051
W054
C136
C643
W063
C426
C405
R501_2
C208
FB401
OS101
C435
W038 W039
R125
C352_1
W066
W811
CP802B S001
CP802A
W001
C416
C738
C736
C743
C739
C742
C727
C778
C775
R413
CC005
C414
R507
C737
C725
C622
L201
W070
C735
C767
C771
C770
C769
L202
C618
C412_1
W012
W831
C355
C356
TP701
TP702
R114
W025
W007
D410
D408
D404
D406
D407
L701
D605
C433
W008
W022
W053
R425
W005
W068
W042
R411
C404
W017
R426
W069
C351_1
W013
W014
R644
W065
W067
C422
C802_1
R705
VR401
C636
D103
D401
D402
W823
W817
W838
W857
W836
W842
CC002
CC006
W011 R431
D409
C501
S802Y
S802X
R415
C444

PRINTED CIRCUIT BOARDS
MAIN/CRT (CHIP MOUNTED PARTS)
SOLDER SIDE
F-3 F-4
1
25
41
64
1
13
25
37
R101 R155
IC201
R202
R209
R201
C632
C612
R206
C210
C207C206
R204
R203
R208
C218
R618C610
R624
R623
R622
R636
R637
R638
R632
R608
R211
R606
R612
R124
C216
R647R646
R645
R215
R613
R653
C645
R655
C647 R656
R663 R662
R661
R619 R651 R620
R652
R664
R665
R666
C654
C224
R213
R212
R217
R218
C648
IC101
R128 R127 R142 R105
R106
R137
C129 C130
R134
R138
C109
C110
R121
R122
R123
R118
R119
R111
R146 R116 R144
C108
R112
R113
R109
R139
R115
R150 R149 R148
R745
C701 C702
R752
R751 R743
R756
R744
R704 R729 R731 R703
R755
R723
IC701
R757
R352 R353
R354
R117
R419 R420
R403
R406 R404
R007 R006
R152
R151
R210
R357
R108

ABC D E F GH
ABC D E F GH
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
TM101
R25-1088
W823
Q101
2SC1815Y
V-BUFFER Q102
2SC1815Y
H-BUFFER
Q104
2SC2001_L
POWER SW
Q103
2SC1815Y
X-RAY SW
Q105
2SC1815Y
RESET SW.
D103
MTZJ5.6B
D001 HZ30-3L
DESCRIBED IN PARTS LIST ONLY
CRITICAL FOR SAFETY,USE ONES
ARESINCE THESE PARTS MARKED BYCAUTION:
DANS LA NOMENCLATURE DES PIECES
N’UTILISER QUE CELLS DECRITES
DANGEREUSES AN POINT DE VUE SECURITE
ETANTLES PIECES REPAREES PAR UNATTENTION:
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
GND
B+
Vout
OS101
PIC-28143SY-2
1
2
3
IC199
M24C01-BN6
MEMORY
1234
5678
D101
1SS133
R151
1K
R155
1K
R123 4.7K
R122 4.7K
R121 4.7K
R120 4.7K
R114
220
R109 1M R111 330
R124
4.7K
R146
1K
R144
2.2K
R118
2.7K
R116
1K
R117
33K
R119
27K
R137
4.7K
R130 10K R132 10K
R141
1K
R145
10K
R134
1K
R136
12K
R138
68K
R115
390K
R148
10K
R149
10K
R150
10K
R001 68K 1/2W R002 68K 1/2W
R006
270
R133
47 1/4W
R110
10K
R007
270
R142
10K
R127 47K
R128
10K R139
10K
R105
2.2K
R106
2.2K
R101
560
R112 2.2K
R113
2.2K
R131
560
R152
1.8K
R125
1K
R108
10K
IC104 PST600C
RESET
123
IC103KIA78L05BP
5V REG.
123
C111
150V KA
C134
150V KA
C105
10006.3V YK
C002 1006.3V YK
C004
2.250V KA
C123
1016V KA
C120
4.750V KA
C121
0.150V KA
C110
18P CH
C108 560P W C107
0.033 M
C131
0.0022 M
C109
15P CH
C103
0.1 TF
C001 0.022 M
C101
0.01 Y
C129 120P SL C130 120P SL
C136
0.022 M
X101
32.768KHz
C102
2.250V KA
TU001 ENV56D67G3
1
10
11
12 13 14 15
2 3 4 5 6
7
8 9
SW105
SKHVBED010
POWER
SW104
SKHVBED010
VOL DOWN
SW103
SKHVBED010
VOL UP
SW102
SKHVBED010
CH DOWN
SW101
SKHVBED010
CH UP
ATC001
NXC0032-010010
IC101
OEC3041A
MICON
1101112
13 14 15 16 17 18 19
2
20 21 22 23 24
25 26 27 28 29
3
30 31 32 33 34 35 36
373839
4
404142434445464748
56789
THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
NOTE:
TUNER VIDEO SIGNAL
R.SIGNAL
G.SIGNAL
B.SIGNAL
DEFLECTION SIGNAL
AUDIO_MUTE
I2C_SCL
I2C_SDA
AT+12V
+B
POWER
GND
P.CON+5V
V_SYNC
H_SYNC
X-RAY_TEST
X_RAY
AGC
IF
I2C_OFF
I2C_SCL
I2C_SDA
OSD_BLANKING
OSD_BLUE
OSD_GREEN
OSD_RED
VIDEO
AFT_IN
FROM/TO DEFLECTION/CRT
G-2
G-1
TM9425
PCB010
0
0
5.0
NC
NCNC
VSS
XT1
XT2
VDD
NC
2
5.0
0.8
6.7
NC
NC
NC
NC NC NC NC
NC
NC
NC
NC
NC
1
0 0 0 0 0 5.0 4.600 0 0
5.0
5.0
5.0
5.0
0
0
0
0
0
0
0
0
0
2.85.0 3.1 5.0 4.30 0000 00
0
0
0
1.2
2.1
5.0
0
2.4
5.0
5.0
0
0
0
0
0
0
4.3
0
00
4
AGC
ADRES
SCL SDA V.S BPL BTL
IF
NC NC
30.0
2.0 6.9 1.5 4.8 4.8
0 0 0
5.0
5.0 0 5.0
VCC GND
V.OUT
5.0 5.0 5.0 0
0000
E0
E1 E2 VSS
VCC
MODE
SCL SDA
8.8
NC
NC NC
X-RAY
ATF
KEY1
KEY2
NC
NC
NC
-RES
FILTER
CVIN
NC
-VS -HS
R G B
SDA
BL
NC NC
SCL
NC
NC
NC
NC
SD
REMOCON
NC
TV MUTE
AV1
AV2
NC NC NC NC NC
IIC BUS OFF
NC NC
POWER
AKB DRIVE
B.B.H
EXT MUTE
NC
0
3
5.0 0 12.5
GNDOUT IN
FROM/TO CHROMA
FROM/TO POWER
25"
25"
25"
FROM/TO SOUND
MICON/TUNER SCHEMATIC DIAGRAM

ABC D E F GH
ABC D E F GH
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
CC005
TP-1S-05
R649
1.8K 3W
R615
1.8K 3W
R614
1.8K 3W
L202
0.22uH
L601 15uH
L201
10uH
R607
4.7K +-1%
Q602
2SA1015Y
BUFFER
Q605
2SA1015Y
VIDEO
BUFFER
Q604
2SA1015Y
VIDEO BUFFER
CP101 W-D2506#01
1 2 3 4 5 6
IC201
LA76814M-MPB
CHR0MA
1 101112131415161718192 20 21 22 23 24
25 26 27 28 29
3
30 31 32 33 34 35 36 37 38 39
4
40
414243444546474849
5
50515253545556575859
6
6061626364
6566676869
7
70717273747576777879
8
80
9
L205
3602038
VCO
1
2
34
6
OUTOUTGININ
CF201_1 SAF45MFX220ZR
12345
AUDIO SIGNAL
LUMINANCE SIGNAL
COLOR SIGNAL
C636
4.750V NP
C651
1016V
KANP
TP201
W805
W819
W817
D605
HZ6B2L
D611
RD9.1EB1
DESCRIBED IN PARTS LIST ONLY
CRITICAL FOR SAFETY,USE ONES
ARESINCE THESE PARTS MARKED BYCAUTION:
DANS LA NOMENCLATURE DES PIECES
N’UTILISER QUE CELLS DECRITES
DANGEREUSES AN POINT DE VUE SECURITE
ETANTLES PIECES REPAREES PAR UNATTENTION:
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
D602
1SS133
D609
1SS133
D610
1SS133
D606
1SS133
D603
11E1N
D607
1S2472
R608
3.9K
R210
47K
R632
2.2K
R636
2.7K
R212
5.6K
R213
10K
R204
1K
R609
100 1/4W
R605
2.7K 1/4W
R613
1K
R209
7.5K
R215
5.6K
R208
220
R638 2.7K
R653
680
R637
1K
R645 4.7K R646 4.7K R647 4.7K
R626
100 1/4W
R663
820
R618 1M
R652
47K
R651 100
R619
270
R662
1K
R660
560
R203
1K
R655 3.3K
R664 470
R625
100 1/4W
R604
100 1/4W
R627
91K 1/4W
+-2%
R648 2.7K
R661 56K
R601 1K R602 1K
R206 2.2K
R202
100K
R201
100K
R665 1K
R620 270
R624
24K
R623
24K
R622
1K
R666 10K
R611
22K 1/4W
R643
51 1/2W
R211
68
R612
1.3K
R606 10K
R217
6.8K
R218
2.7K
R644
331/2W
R656
1K
IC601 KIA78L09BP
9V REG.
123
C204
150V KA
C618
1000
10V
YK
C637
0.4750V KA
C644
1016V KA
C625
1016V KA
C627
0.4750V KA
C617
150V KA
C217
0.4750V KA
C626
1016V KA
C608
4716V YK
C211
150V KA
C620
2.250V KA
C215
150V KA
C646
150V KA
C623
10006.3V YK
C643
1006.3V KA
C652
100
6.3V
KA
C202
470
6.3V
YK
C635
0.2250V KA
C653
476.3V KA
C624
3.350V
KA
C615
22
16V
KA
C201
0.01 B
C611 0.01
M
C616 0.22 TF
C213 0.022 M
C208
0.01
Y
C206
0.001
Y
C610 100P SL
C619 0.01 Y
C218
0.001 Y
C612 100P A
C609
0.01 Y
C622 0.01 Y
C224
5P CH
C649 0.01 Y
C207
47P
SL
C210
47P SL
C648 33P SL C647 12P CH
C654 100P SL
C614
0.47 TF
C632 27P SL
C214 0.01 Y
C203
0.1 M
C628 0.047 M
C645
15P CH
C605
0.01 Y
C216
3P SL
X601
3.579545MHz
THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
NOTE:
TUNER VIDEO SIGNAL
R.SIGNAL
G.SIGNAL
B.SIGNAL
DEFLECTION SIGNAL
P.CON+9V
AT+12V
TU_AUDIO_OUT
+B
VIDEO
IF ABCL
P.CON+5V
AGC X_RAY
AFT_IN H_SYNC
I2C_SDA H_OUT
I2C_SCL V_OUT
OSD_RED +12V
OSD_GREEN CLAMP
OSD_BLUE
OSD_BLANKING B.OUT
G.OUT
I2C_OFF R.OUT
5
G-4
G-3
SAW FILTER
TEST POINT
TM9425
PCB010
CHROMA SCHEMATIC DIAGRAM
VIF
IF AGC
OSD
FIX GAIN
VC0
TINT
HOR
VCO
1/256
HOR
C/D
PHASE
SHIFTER
HOR
OUT
VER
SEP
VER
C/D
HOR
VOC
VER
RAMP
PLL
VIDEO
SPLL
BPF BPF
FM
DET
SW
DC
VOL
AFT
BUS
VIDEO
SW
DRIVE/CUT-OFF
OSD
SW
DELAY
LINE
PEAKING
CORING
BLACK
STRETCH
BPF
COLOR
CLAMP
CONTRAST RGB
MATRIX
SYNC
RF AGC
BRIGHT
SEP
27
26
25
24
23
22
2120191817161514
13
1211
1098
1
2
3
4
5
6
7
54
53
52
51
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35
34
33
32
31
30
29
28
H_GND
ABL
CLK
REF
AKB
RES
CLAMP
SW
ACC
DEMO
CLMPCLMP
A2C
TRAP AFC2
FBP
AFC1
APC1
CW
KIL X-RAY
FILTER
ADJ
LIM
AMP
DET
TRAP VIDEO
AMP
DC
NC NC NC NC NC NC NC
NC
NCNC NC
NC
NC
NC
NC
NC
NC
NC NC NC NC
NC
NC
NC
NC
NC
HOR GND
0 0 4.1 4.1 000003.3 2.2 0
0
0
0
0
0
0
0
2.1
1.7
1.1
0.4
2.7
5.0
2.7
2.3
0
0
0
0
0
0
0
00 00 0 0000 0000
3.0
2.2
2.0
2.5
3.0
0
2.4
1.5
2.9
04.8 2.5 2.4 0 4.6 3.9 7.8 2.6
0
2.0
V/C GND
0.30
0
0
GND INOUT
6
8
9
10
11
12
13
14
15 16 17
7
0
2.62.6
0 5.0
0.3
5.0
1.73.30.32.72.6
NC
FROM/TO MICON/TUNER
GND
I2C_SCL I2C_SDA I2C_OFF
R.OUT B.OUT
2.5
2.42.2
2.8
9.0 12.9
TO SOUND
FROM POWER
FROM/TO DEFLECTION/CRT
0.3
0
5.0