Toshiba 13A23 User manual

SERVICE MANUAL
COLOR TELEVISION
13A23
FILE NO. 050-200306
DOCUMENT CREATED IN JAPAN, Apr., 2003

SERVICING NOTICES ON CHECKING
6. AVOID AN X-RAY1. KEEP THE NOTICES
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.
3. USE THE DESIGNATED PARTS
5. TAKE CARE TO DEAL WITH THE
CATHODE-RAY TUBE
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.
HOW TO ORDER PARTS
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
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
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.
4. PUT PARTS AND WIRES IN THE
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.
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.
PERFORM A SAFETY CHECK AFTER
SERVICING
7.
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
Earphone jack
A1-1

TABLE OF CONTENTS
SERVICING NOTICES ON CHECKING.....................................................................................
HOW TO ORDER PARTS ..........................................................................................................
IMPORTANT ...............................................................................................................................
TABLE OF 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 DIAGRAMS ...................................................................................................................
PRINTED CIRCUIT BOARDS
MAIN/CRT................................................................................................................................
SCHEMATIC DIAGRAMS
MICON/CHROMA/TUNER ......................................................................................................
TV POWER..............................................................................................................................
DEFLECTION/CRT..................................................................................................................
SOUND/AV ..............................................................................................................................
WAVEFORMS .............................................................................................................................
MECHANICAL EXPLODED VIEWS...........................................................................................
MECHANICAL REPLACEMENT PARTS LIST .........................................................................
ELECTRICAL REPLACEMENT PARTS LIST...........................................................................
A1-1
A1-1
A1-1
A2-1
A3-1~A3-5
B1-1
B2-1, B2-2
C1-1
C1-1
C1-1
D-1~D-4
E-1, E-2
F-1~F-4
G-1, G-2
G-3, G-4
G-5, G-6
G-7, G-8
H-1, H-2
I-1
J1-1
J2-1~J2-3
A2-1

GENERAL SPECIFICATIONS
G-1 TV CRT CRT Size / Visual Size 13 inch / 335.4mmV
System CRT Type Normal
Deflection 90 degree
Magnetic Field BV/BH +0.45G/0.18G
Color System NTSC
Speaker 1Speaker
Position Bottom
Size 3 Inch
Impedance 8 ohm
Sound Output MAX 1.0 W
10%(Typical) 0.8 W
NTSC3.58+4.43 /PAL60Hz No
G-2 Tuning Broadcasting System US System M
System Tuner and System 1Tuner
Receive CH Destination USA(W/ CATV)
Tuning System F-Synth
Input Impedance VHF/UHF 75 ohm
2 - 69, 4A, A-5 - A-1,
CH Coverage A - I, J - W, W+1 - W+84
Intermediate Picture(FP) 45.75MHz
Frequency Sound(FS) 41.25MHz
FP-FS 4.50MHz
Preset CH No
Stereo/Dual TV Sound No
Tuner Sound Muting Yes
G-3 Power Power Source AC 120V AC 60Hz
DC
Power Consumption at AC 54 W at AC 120 V 60 Hz
Stand by (at AC) 5 W at AC 120 V 60 Hz
Per Year -- kWh/Year
Protector Power Fuse Yes
G-4 Regulation Safety UL / CSA
Radiation FCC / IC
X-Radiation DHHS / HWC
G-5 Temperature Operation +5oC ~ +40oC
Storage -20oC ~ +60oC
G-6 Operating Humidity Less than 80% RH
A3-1

GENERAL SPECIFICATIONS
G-7 On Screen Menu Yes
Display Menu Type Character
Picture Yes
Contrast Yes
Brightness Yes
Color Yes
Tint Yes
Sharpness Yes
Audio No
Bass No
Treble No
Balance No
BBE On/Off No
Stable Sound On/Off No
CH Set Up Yes
TV/CABLE(CATV) Yes
Auto CH Memory Yes
Add/ Delete Yes
Language Yes
V-chip Yes
Lock Yes
On Timer Yes
CH Label No
Favorite CH No
Color Stream DVD/DTV No
Control Level Yes
Volume Yes
Brightness Yes
Contrast Yes
Color Yes
Tint Yes
Sharpness Yes
Tuning No
Bass No
Treble No
Balance No
Back Light No
Stereo,Audio Output,SAP No
Video Yes
Color Stream No
Channel(TV/Cable) Yes
CH Label No
Game Timer Yes
Sleep Timer Yes
Sound Mute Yes
V-chip Rating Yes
G-8 OSD Language English French Spanish
G-9 Clock and Sleep Timer Max Time 120 Min
Timer Step 10 Min
On Timer Program(On Timer ) Yes
Wake Up Timer No
Timer Back-up (at Power Off Mode) more than -- Min Sec
A3-2

GENERAL SPECIFICATIONS
G-10 Remote Unit RC-EH
Control Glow in Dark Remocon Yes
Format Toshiba
Custom Code 40-BF h
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys 27 Keys
Keys Power Yes
1 Yes
2 Yes
3 Yes
4 Yes
5 Yes
6 Yes
7 Yes
8 Yes
9 Yes
0 Yes
100 No
CH Up Yes
CH Down Yes
Volume Up Yes
Volume Down Yes
TV/Caption/Text Yes
CH1/CH2 Yes
TV/Video(TV/AV) Yes
CH RTN/CH ENT(Quick View) Yes
Sleep Yes
RE Call(Call) Yes
Reset Yes
Menu Yes
Enter Yes
Mute Yes
Exit No
MTS(Audio Select) No
Set + Yes
Set - Yes
Multi Brand Keys CH Up(VCR) No
CH Down(VCR) No
Pause/Still No
TV/VCR(VCR) No
Code No
FF No
Rew No
Rec No
Play No
Stop No
TV No
VCR No
Cable No
A3-3

GENERAL SPECIFICATIONS
G-11 Features Auto Degauss Yes
Auto Shut Off Yes
Canal+ No
CATV Yes
Anti-theft No
Rental No
Memory(Last CH) Yes
Memory(Last Volume) Yes
V-Chip Yes
Type USA,ORION Type
BBE No
Auto Search No
CH Allocation No
SAP No
Channel Lock No
Just Clock Function No
Game Position No
CH Label No
VM Circuit No
Full OSD No
Premiere No
Comb Filter No
Lines
Auto CH Memory Yes
Hotel Lock No
Closed Caption Yes
FBT Leak Test Protect Yes
CH Lock Yes
Video Lock Yes
Game Timer (Max Time:120 Min) Yes
Stable Sound No
Energy Star No
Power On Memory Yes
Favorite CH No
G-12 Accessories Owner's Manual Language English / Spanish / French
w/Guarantee Card Yes
Remote Control Unit Yes
Rod Antenna No
Poles
Terminal
Loop Antenna No
Terminal -
U/V Mixer No
DC Car Cord (Center+) No
Guarantee Card No
Warning Sheet No
Circuit Diagram No
Antenna Change Plug No
Service Facility List No
Important Safeguard No
Dew/AHC Caution Sheet No
AC Plug Adapter No
Quick Set-up Sheet No
Battery Yes
UM size x pcs UM-4 x 2 pcs
OEM Brand No
AC Cord No
AV Cord (2Pin-1Pin) No
Registration Card (NDL Card) Yes
ESP Card Yes
300 ohm to 75 ohm Antenna Adapter No
A3-4

GENERAL SPECIFICATIONS
G-13 Interface Switch Front Power Yes
System Select No
Main Power SW No
Sub Power No
Channel Up/Reset Yes
Channel Down/Enter Yes
Volume Up/Set Up Yes
Volume Down/Set Down Yes
MENU=Volume Up+Volume Down Yes
Rear AC/DC No
TV/CATV Selector No
Degauss No
Main Power SW No
Indicator Power Yes
Stand-by No
On Timer No
Terminals Front Video Input RCA
Audio Input RCA x 1
Other Terminal Ear Phone
Rear Video Input(Rear1) No
Video Input(Rear2) No
Audio Input(Rear1) No
Audio Input(Rear2) No
Video Output No
Audio Output No
Euro Scart No
Color Stream No
Diversity No
Ext Speaker No
DC Jack 12V(Center +) No
VHF/UHF Antenna Input F Type
AC Outlet No
G-14 Set Size Approx. W x D x H (mm) 362 x 360 x 320.5
G-15 Weight Net (Approx.) 9.5 kg ( 20.9 lbs)
Gross (Approx.) 11.0kg ( 24.4lbs)
G-16 Carton Master Carton No
Content ---- Sets
Material -- /--
Dimensions W x D x H(mm) -- x -- x --
Description of Origin No
Gift Box Yes
Material Double/Brown
Dimensions W x D x H(mm) 440 x 408 x 380
Design As per Buyer's
Description of Origin Yes
Drop Test Natural Dropping At 1
C
orner
/
3
E
dges
/
6
Su
rf
aces
Height (cm) 62
Container Stuffing 866 Sets/40' container
G-17 Cabinet Material Cabinet Cabinet Front PS 94V0 DECABROM
Cabinet Rear PS 94V0 DECABROM
PCB Non-Halogen Demand No
Eyelet Demand Yes
A3-5

B1-1
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.)
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.)
Fig. 1-4
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.
CRT Support Fig. 1-5

B2-1
Masking Tape
(Cotton Tape)
DISASSEMBLY INSTRUCTIONS
2.
REMOVAL
IC
Put the Masking Tape (cotton tape) around the Flat
Package IC to protect other parts from any damage.
(Refer to Fig. 2-1.)
1.
Fig. 2-1
NOTE
REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
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.
NOTE
Masking is carried out on all the parts located within 10
mm distance from IC leads.
Blower type IC
desoldering machine
IC
Heat the IC leads using a blower type IC desoldering
machine. (Refer to Fig. 2-2.)
2.
Fig. 2-2
NOTE
Do not add the rotating and the back and forth
directions force on the IC, until IC can move back and
forth easily after desoldering the IC leads completely.
When IC starts moving back and forth easily after
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.)
3.
Blower type IC
desoldering
machine
IC Fig. 2-3
Tweezers
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
Shield Wire. (Refer to Fig. 2-4.)
5.
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Braided Shield Wire
Soldering Iron
Fig. 2-4
IC pattern

B2-2
DISASSEMBLY INSTRUCTIONS
Supply soldering
from upper position
to lower position
IC
Supply the solder from the upper position of IC leads
sliding to the lower position of the IC leads.
(Refer to Fig. 2-6.)
2.
Fig. 2-6
Soldering IronSolder
IC
Absorb the solder left on the lead using the Braided Shield
Wire. (Refer to Fig. 2-7.)
3.
Fig. 2-7
Soldering Iron
Braided Shield Wire
NOTE
Do not absorb the solder to excess.
IC
When bridge-soldering between terminals and/or the
soldering amount are not enough, resolder using a Thin-tip
Soldering Iron. (Refer to Fig. 2-8.)
4.
Fig. 2-8
Thin-tip Soldering Iron
NOTE
When the IC leads are bent during soldering and/or
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, be always sure to replace the IC in this
case.
Finally, confirm the soldering status on four sides of the IC
using a magnifying glass.
Confirm that no abnormality is found on the soldering
position and installation position of the parts around the IC.
If some abnormality is found, correct by resoldering.
5.
Solder temporarily
Soldering Iron
INSTALLATION
Take care of the polarity of new IC and then install the new
IC fitting on the printed circuit pattern. Then solder each
lead on the diagonal positions of IC temporarily.
(Refer to Fig. 2-5.)
1.
Fig. 2-5
Solder temporarily

SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter the Service Mode, press both set key and remote control key for more than 1 second.
Set Key Remocon Key Operations
VOL. (-) MIN 0Releasing of V-CHIP PASSWORD and LOCK PASSWORD.
VOL. (-) MIN 1
Initialization of the factory.
NOTE: Do not use this for the normal servicing.
If you set a factory initialization, the memories are reset such as the channel setting,
and the POWER ON total hours.
VOL. (-) MIN 6
POWER ON total hours is displayed on the screen.
Refer to the "CONFIRMATION OF HOURS USED".
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
VOL. (-) MIN 8 Writing of EEPROM initial data.
NOTE: Do not use this for the normal servicing.
VOL. (-) MIN Display of the Adjustment MENU on the screen.
Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).
9
CONFIRMATION OF HOURS USED
POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to "0".
1.
2.
3.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel
button (6) on the remote control for more than 1 second.
After the confirmation of using hours, turn off the power.
ADDRESS DATA
INIT 00 50
CRT ON 0010
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)
C-1
WHEN REPLACING EEPROM (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.
Table 1
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
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 Channel button (6) on the remote control for more than 1 second.
ADDRESS and DATA should appear as FIG 1.
ADDRESS is now selected and should "blink". Using the VOL. UP/DOWN button 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 VOL. UP/DOWN button until required DATA value has been selected.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
Repeat steps 3 to 6 until all data has been checked.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
After the data input, set to the initializing of shipping.
Turn POWER on.
Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 1 second.
After the finishing of the initializing of shipping, the unit will turn off automatically.
NOTE: No need setting for after INI 0F due to the adjustment value.
50 04 EB 46 07 B3 24 69 00
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
INI
00 AA 05 90 D6 00 07
39

ELECTRICAL ADJUSTMENTS
D-1
FUNCTION
CONTRAST CENT
CONTRAST MAX
CONTRAST MIN
COLOR CENTER
COLOR MAX
COLOR MIN
TINT
SHARPNESS
FM LEVEL
LEVEL
SEPARATION1
SEPARATION2
TEST MONO
TEST STEREO
1. ADJUSTMENT PROCEDURE
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
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.
When you exchange IC and Transistor for a heat sink,
apply the silicon grease on the contact section of the heat
sink. Before applying new silicon grease, remove all the
old silicon grease. (Old grease may cause damages to the
IC and Transistor.)
2. BASIC ADJUSTMENTS
Prepare the following measurement tools for electrical
adjustments.
1. Oscilloscope
2. Digital Voltmeter
3. Pattern Generator
On-Screen Display Adjustment
1. In the condition of NO indication on the screen.
Press the VOL. DOWN button on the set and the Channel
button (9) on the remote control for more than 1 second to
appear the adjustment mode on the screen as shown in
Fig. 1-1.
Fig. 1-1
3.
4.
Use the Channel UP/DOWN button or Channel button
(0-9) on the remote control to select the options shown
in Fig. 1-2.
Press the MENU button on the remote control to end the
adjustments.
FUNCTION
OSD H
CUT OFF
H. VCO
H. PHASE
V. SIZE
V. SHIFT
R DRIVE
B DRIVE
R BIAS
G BIAS
B BIAS
BRIGHT CENT
BRIGHT MAX
BRIGHT MIN
NO.
00
01
04
05
06
07
08
09
10
11
12
13
14
15 Fig. 1-2
NO.
16
17
18
19
20
21
22
23
24
25
26
27
28
29
TV
00 OSD 15
2-3: FOCUS
1.
2.
3.
Receive the monoscope pattern.
Turn the Focus Volume fully counterclockwise once.
Adjust the Focus Volume until picture is distinct.
2-2: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1.
2.
3.
4.
5.
6.
7.
Place the set with Aging Test for more than 10 minutes.
Receive the gray scale pattern from the Pattern Generator.
Using the remote control, set the brightness and contrast
to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (10) on the remote control to
select “R. BIAS”.
Press the CH. UP/DOWN button on the remote control to
select the “R. BIAS”, “G. BIAS”, “B. BIAS”, “R. DRIVE” or
“B. DRIVE”.
Adjust the VOL. UP/DOWN button on the remote control
to whiten the R. BIAS, G. BIAS, B. BIAS, R. DRIVE, and
B. DRIVE at each step tone sections equally.
Perform the above adjustments 5 and 6 until the white
color is looked like a white.
2-1: CUT OFF
1.
2.
3.
4.
Adjust the unit to the following settings.
R.DRIVE=10, B.DRIVE=10, R.BIAS=64, G.BIAS=64,
B.BIAS=64, BRI.CENT=120, CONT.MAX=40.
Place the set with Aging Test for more than 15 minutes.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (01) on the remote control to
select "CUT OFF".
Adjust the Screen Volume until a dim raster is obtained.
2-4: HORIZONTAL PHASE
1.
2.
3.
4.
Receive the monoscope pattern.
Using the remote control, set the brightness and contrast
to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (05) on the remote control to
select “H. PHAS”.
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on right and
left becomes minimum.
2-5: VERTICAL SHIFT
1.
2.
3.
4.
Receive the monoscope pattern.
Using the remote control, set the brightness and contrast
to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (07) on the remote control to
select “V. SFT”.
Press the VOL. UP/DOWN button on the remote control
until the horizontal line becomes fit to the notch of the
shadow mask.

ELECTRICAL ADJUSTMENTS
D-2
2-6: VERTICAL SIZE
1.
2.
3.
4.
Receive the monoscope pattern.
Using the remote control, set the brightness and contrast
to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (06) on the remote control to
select “V. SIZE”.
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on upside and
downside becomes 10 ±2%.
2-7: SUB BRIGHTNESS
1.
2.
3.
4.
5.
6.
Receive the monoscope pattern. (RF Input)
Using the remote control, set the brightness and contrast
to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (13) on the remote control to
select "BRI.CENT".
Press the VOL. UP/DOWN button on the remote control
until the white 10% is starting to be visible
Receive the monoscope pattern. (Audio Video Input)
Press the TV/VIDEO button on the remote control to set
to the AV mode. Then perform the above adjustments
2~4.
2-9: SUB CONTRAST
1.
2.
3.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select “CONT. MAX”.
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes “45”.
Receive a broadcast and check if the picture is normal.
Press the TV/VIDEO button on the remote control to set to
the AV mode. Then perform the above adjustments 1~3.
2-10: OSD HORIZONTAL
Activate the adjustment mode display of Fig. 1-1.
Press the VOL. UP/DOWN button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-3)
1.
2.
B
A
TV
00 OSD 34
Fig. 2-3
"A"
2-8: SUB TINT/SUB COLOR
1.
2.
3.
4.
5.
6.
7.
8.
9.
Receive the color bar pattern.
Connect the oscilloscope to TP023.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (22) on the remote control to
select "TINT".
Press the VOL. UP/DOWN button on the remote control
until the section "A" becomes as straight line
(Refer to Fig. 2-1)
Connect the oscilloscope to TP022.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (19) on the remote control to
select "COL.CENT".
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 110 ±10% of the
white level. (Refer to Fig. 2-2)
Receive the color bar pattern. (Audio Video Input)
Press the TV/VIDEO button on the remote control to set
to the AV mode. Then perform the above adjustments
2~7
Fig. 2-1
white 100% red 110% Fig. 2-2

ELECTRICAL ADJUSTMENTS
D-3
3. PURITY AND CONVERGENCE
ADJUSTMENTS
NOTE
1.
2.
3.
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.
3-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT)
1.
2.
3.
4.
5.
6.
7.
8.
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.
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 color.
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
3-3: STATIC CONVERGENCE
NOTE
Adjust after performing adjustments in section 3-2.
1.
2.
3.
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.
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
BR
G
B
R G B
UPWARD/DOWNWARD SLANT RIGHT/LEFT SLANT
Fig. 3-2-a
WEDGE WEDGE
WEDGE
WEDGE POSITION
Fig. 3-2-b

ELECTRICAL ADJUSTMENTS
4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION)
D-4
CD101B
T502
CP802A
TU001
S501A
S501B
FB401
TP001
CD101A
CD501
AC IN
CP401
CP802B
CP806
CP803B
CP801
S101
S102
R807
R803
SPEAKER
TP023
TP022
CRT PCB
MAIN PCB
GND CRT
CD801
DEGAUSS COIL
CP502
L503
CRT DY
CP803A
J801

OSD
BLOCK DIAGRAM
74
78
76
70
69
68
67
73
66 ATT
RGB Proc.2
OSD SW
CONTRAST BRIGHTNESS
I/O
IIC
TIM
INT
PWM
AD
MCU
CLK
VCXO
RGB OUTPUT Stage
DRIVE
CUT OFF
HV BLK
Ver.Proc.
Ver SYNC SEP
Ver.COUNT DOWN
V RAMP
20
21
IC1001 AN7511
Q801
RED OUT
Q802
GREEN OUT
Q803
BLUE OUT
Q402
H. DRIVE
Q401
H. OUTPUT
26
SOUND AMP
IC
48
Q607
H-CTL
SPEAKER
SP1001
52
51
50
34
45
46
9
HV
F
S
FB401
10
1
2
3
CRT
397
RGB
Heater
F8
4
PUMP UP
AMP
+
-
75
26
V-OUT IC
IC401 AN5522
VCC
RGB Proc.1
RGB MATRIX
COLOR CONT
ROM
RAM
38
37
26
27
57
58
56 16
Hor.Proc.
SYNC SEPA/Hor. VCO
Hor.COUNT DOWN
AFC-1/H COINCIDENT
AFC-2 H PHASE
1
J703
2
J702
2
DY
D501~D504
RECTIFIER
3
1
4
2L501
AC IN
F501
Q507
FEED BACK
T502
4
8
13
FEED BACK
SW
Q502
BUFFER
Q501
SWITCHING
6
DEGAUSS COIL
L503
6
5MEMORY IC
IC199
S-24C02BDP-1A
SDA SCL
POWER
VOL. DOWN
CH. DOWN
VOL. UP
CH. UP
X601
3.579545MHz
TU001
10 13
11 12 17
OS101
1
16
Q505
Q105
SW
Q503
PROTECT DRV.
MICON/CHROM IC
IC101 OEC7091A
D106
2
6
7EAR PHONE_JACK
J1001
Chroma
Proc.
ACC/C-BPF
APC/KILLER
TINT/DEMO
P. FAIL
IC501
LTV-817M-VB
E-1 E-2

4A125VOR250V
Q602
Q606
R605
D604
D603
C621
C620_1
W803
C1003
IC1001
C1005
C1001
W032
W031
W036
D001
R602
W053
W054
W055 C616
C615
W046
R608
R621
R604
D606
R606
W048
Q607 C633
R616
R617
R109
IC199
Q601 Q603
W040
R615
R613
R614
R611
C628
W051
C605
R601
X601
C601 C106
W041
C614
W060
CP802A
CD101A
CD101B
C612
R701
J703 J702
TU001
R002
SW101 SW102 SW103 SW104 SW105
R516
Q505
R505
R449
R448
R413
W038
W039
C427
R416
D403
R415
R418R424
C414
J1001
R629
IC401
W027
W002
W001
C437
R408
D412
D509
D508
HS501
C513_1
C508
TH501_1
C511
C526_1
C519
C446
C417
W005
W020
R814
C810
R816
R809
R811
R813
C808
R815
R504
TP024
TP023
TP022
TP401
R519
R509
D512
R429
FH501FH502 F501
S501B
CP801
R806
C819
R802
L501
CP803B
L801
R805_1
R803_1
R807_1
Q802
CP802B S501A
C435
R518
R502
D515
W006
IC501
D511
R515
R513
D528
R512
D516
R447
CP401
R507
CP803A
C403
R514
R427
D501
HS402
R520
C509
R506
R503
Q502
R508
Q501
R542
D503
D502
CP502
D408
C521
D405
B504
B501
R517_1
D504
R422
D510
D513
D505
D506
R1007
D410
R410
AFC
HS401
C123 OS101
J801
COL
B+
8V
ABL
GND
25V
12V
180V
HEATER
FB401
R423
R538
W003
Q801
Q803
D411
C434
C401
L401
W802
Q507
W035
R417 C516
R525
Q503
W049 C507
D514
R523
R527
R607
R603
W037
D521
C622
W061
C610
W052
W050
C617
W056
W816
W028
R405
C809
D404
W007
W008
D106_1
W029
Q105
R121
D522
R001
R445
W042
R528
R1001
C1008
R510
R522
W026
C103
C623
C606
W014
W012
C118
Q401
W011
W004
CP601
W043 W044 W045
W018
R110
R113 R112
W057
W058
C602
C004
W062
W059
W023
W017
W030
W066
R421
C440
R446
R403
W033
C448_1
C624_1
C630
D406
D409
W067
W064
W070
W019
R401
R409
W010
W009
C007
W024
W065
W069
R119_1
W071
R804
C406
T401
R620
R500
R404
Q402
C518
T502
C510
C422
C502
C503
C505
R501
C515
C514
C517_1
C418
C506
CP503
C443
W072
W025
W034
W015
W828
W823
W833
W808
W811
W809
W810
W832
W830
W819
W834
W813
CD501
W073
W831
R130
W068
C420
R537
L001
C410_1
CP806
S101B
S101A
S102B
S102A
PRINTED CIRCUIT BOARDS
MAIN/CRT (INSERTED PARTS)
SOLDER SIDE
F-1 F-2

1
25
41
64
C1004_2
R1003
R004
R003
R610
C101
C609
R618
C112
C629
C627
C626
C604
C104
C102
IC101
R702R703
R128
R126
R101
R143
R1008
R420
R419
C501_2
C603
R104
C108_1
C107 C105 R102
R103
R125
R609
R115
C001
R1005
R1004
R704
R127
R116
R627
R106
R105
R107
R108
R129
R124_1
PRINTED CIRCUIT
MAIN (CHIP MOUNTED PARTS)
SOLDER SIDE
F-3 F-4

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
L001
3.3uH
0305
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
C112
100P CH
C629
0.01 F
C602
0.1 F
C603
22P CH
C107 220P B
C105 470P B
C104 0.01 F
C102
0.01 F
C626 0.01 F
C627 0.01 F
C604
0.022 F
C101
0.01 F
C609
0.01 F
C001
0.01 F
C004
0.022 F
C620_1
0.01 B
C108_1
0.001 B
C624_1
163V MKT
C007
0.022 B
C601
150V KA
C623
2.250V KA
C614
150V KA
C612 150V KA
C106
150V KA
C103
4716V YK
C617
10010V YK
C628
150V KA
C118
1006.3V KA
C633
1050V KA
C605
150V KA
C606
10010V YK
C610
476.3V KA
C616
150V KA
C615
150V KA
C123
1025V KA
C622
150V KA
C630
470
10V
YK
C621
4716V YK
R130
10K 1/4W
R106 4.7K
R108
100
R107
100
R124_1
10K
R105
4.7K
R627
10K
R602
100 1/4W
R601 8.2K
1/4W
R103
1K
R112
2.2K 1/4W
R607
100 1/4W
R604
100 1/4W
R611
10K 1/4W
R110
10K 1/4W
R116
2.2K
R613 100 1/4W
R614 100 1/4W
R102
1K
R603
120 1/2W
R605
220 1/2W
R606
22K 1/4W
R610
6.8K
R615 100 1/4W
R126
2.7K
R101
560
R113
2.2K 1/4W
R109
10K 1/4W
R621
220 1/4W
R608
1K 1/4W
R616
1K 1/4W
R618
22K
R617
47K 1/4W
R620
2.2K 1/2W
R143
47
R001
15K 1/2W
R002
15K 1/2W
R003
100
R004
100
R104
1M
R121
270 1/4W
R128
560
R127
1K
R609
120K
R125
47K
R115
22K
R129
47K
R119_1
22K 1/4W
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
DANS LA NOMENCLATURE DES PIECES
N’UTILISER QUE CELLS DECRITES
DANGEREUSES AN POINT DE VUE SECURITE
:LES PIECES REPAREES PAR UN ETANT
ATTENTION
:SINCE THESE PARTS MARKED BY
CAUTION
DESCRIBED IN PARTS LIST ONLY
CRITICAL FOR SAFETY,USE ONES
ARE
W809
W833
W823
W828
W808
W816
IC199
S-24C02BDP-1A
MEMORY IC
1234
5678
TUNER VIDEO SIGNAL
AUDIO SIGNAL
D001
MTZJ33B
D604
MTZJ8.2B
DEFLECTION SIGNAL
DEFLECTION SIGNAL
B.SIGNAL
B.SIGNAL
G.SIGNAL
G.SIGNAL
R.SIGNAL
R.SIGNAL
D606
11E1-EIC
D603
1SS133
Q606
KTC3203_Y
8V REG
Q601
KTC3203_Y
5V REG
Q602
KTC3203_Y
5V REG
Q603
KTC3203_Y
5V REG
Q607
KTC3198
H.CTL
R629
22 3W
CAUTION: DIGITAL TRANSISTOR
IC101
OEC7091A
MICON/CHROMA IC 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
SW104
EVQ21505R
VOL DOWN
SW103
EVQ21505R
VOL UP
SW102
EVQ21505R
CH DOWN
SW101
EVQ21505R
CH UP
SW105
EVQ21505R
POWER
X601
100CT3R505
3.579545MHz
CP601
00_8283_0611_00_000
1
2
3
4
5
6
LUMINANCE SIGNAL
Q105
KRA102MAT
SWITCHING
Vout
B+
GND
OS101
RPM7138-H5
1 2 3
TU001
ENG36A01G
1
10
11
12
13
14
15
16
17
18 19
2
20 21
3
4
5
6
7
8
9
D106_1
SLR-342VCT32
POWER ON/ON TIMER
P.CON+5V
P.CON+5V
H_OUT H_CTL
CLAMP
H_CTL G.OUT R.OUT
H_SYNC
B.OUT
ABCL
P.CON+B
V_OUT
GND
V_FEEDBACK
AT+5V
ABCL
H_OUT
X-RAY
SDA
R.OUT
G.OUT
SCL
B.OUT
H_SYNC
AFT
UNREG+12V
AT+5V
KEY1 V_OUT
POWER_FAIL
UNREG+12V
KEY2 V_FEEDBACK
X-RAY
GND
POWER_ON
REMOCON
AUDIO_OUT
AUDIO_MUTE
VIDEO_IN
AUDIO_IN
AUDIO_MUTE
AUDIO_OUT
X-RAY P.CON+5V
P.CON+5V
GND
IIC_OFF TUNER+5V
ON_TIMER
POWER_FAIL AUDIO_IN
VIDEO_IN
TUNER+5V
AT+5V
TU_VIDEO
TU_AUDIO
ON_TIMER
SCL
KEY1
KEY2
REMOCON
AT+5V
POWER_ON
SDA
AFT
IIC_OFF
TU_AUDIO SDA
SCL
P.CON+B
TU_VIDEO
1
4
3
2
7 6 5
1.904.92.22.505.52.83.302.74.94.92.70.31.9
1.0
04.94.94.9 000
0000004.80 0.72.32.22.38.004.8 0 4.8 8.0 2.0 1.0 0 3.4 3.7 0 NCNCNC
8.6
4.7
3.6
2.6
0
3.5
3.2
0.7
2.8
8.7
1.9
2.2
5.5
2.2
1.9
0
NC
NC
NC
NC
NC
4.9
0
4.8
0
0
4.8
2.8
4.9
4.9
0
4.8
4.9
4.9
4.9
2.4
4.8
NC
NC
NC
NC
NC
4.8
0
5.1
FROM/TO TV POWER
11.3
8.5
7.9
(MAIN PCB)
MICON/CHROMA/TUNER SCHEMATIC DIAGRAM
5.6
FROM/TO SOUND/AV
NC
PCB010
TMC558
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC NC
TU_VIDEO
P.CON+B
TU_AUDIO
AFT
SDA
SCL
TUNER+5V
NC
NC
NC
NC
TEST POINT
77 BBE
NC
FROM/TO DEFLECTION/CRT
4.8
0000
4.9 0 4.8
VSS
E2 E1
E0VCC
MODE
SCL SDA
8.8
5.5
4.9
4.9
7.2
5.5
5.5
7.2
4.9
6
5
6 MCU VCC
7 TEST0
8 FILT
9 HLT
5 VSS
1 CNVSS
2 XIN
3 XOUT
4 TEST1
11 CVIN
10 VHOLD
12 RESET IN
13 MCU RESET OUT
14 Y SW OUT
15 V/C GND
16 3.58 XTAL
17 C-APC
18 MCU5.7V REG OUT
19 NC
20 CVBS IN3
21 AUDIO IN3
22 V/C VCC
23 MCU TEST
24 CVBS IN2
25 AUDIO IN2
26 CVBS IN1
27 AUDIO IN1
28 5.7V REG OUT
29 C(Y/C) IN
33 MONITOR OUT
32 FSC OUT
31 VREG VCC
30 Y(Y/C) IN
34 AUDIO ATT OUT
37 V RAMP F/B
38 V RAMP OUT
39 V RAMP CAP
40 8.7V REG OUT
Ver SYNC SEP
Ver.COUNT DOWN
V RAMP
Ver.Proc.
Hor.Proc.
SYNC SEPA/Hor.VCO
Hor.COUNT DOWN
AFC-1/H COINCIDENT
AFC-2 H PHASE
PGB OUTPUT Stage
DRIVE
CUT-OFF
HV BLK
IIC BUS
DECODER
OSD
ROM
RAM
CCD
CPU core
VCO
XO
COLOR CONT
RGB MATRIX
RGB Proc.1
RGB Proc.2
OSD SW
CONTRAST
BRIGHTNESS
MCU RESET
Power Manage.
MCU
CLK Y MUTE
BLACK STRETCH
Vldeo Proc.
C-TRAP/YDELAY
SHARPNESS
Chroma Proc.
ACC/C-BPF
APC/KILLER
TINT/DEMO
ATT
VCXO
LPF
6bB AMP
MCU GND
IIC
TIM
AD
PWM
INT
I/O
CLK CONT
P-ON CONT
SDA/SCL
NC
4.9 4.8
0
SCL
SDA
IIC_OFF
GND
NC
NC
NC
NC
NC
NC
35 AUDIO ATT FILTER
41 NC
42 HVCO F/B
43 AFC FILTER
44 DEF GND
45 FBP IN
46 H OUT
47 DEF VCC
48 NC
49 HI VCC
50 R OUT
51 G OUT
52 B OUT
53 ACL
54 NC
55 PROTECT
56 SDA
57 H_CTL
58 SCL
62 DEGAUSS_H
63 STANDBY_H
64 VOLUME
66 AFT
67 KEY1
68 KEY2
71 AV2
72 AV1
73 AUDIO_MUTE
78 POWER FAIL
80 EXT_MUTE
76 ON_TIMER
60 NC
61 NC
79 NC
75 IIC_OFF
65 NC
59 NC
70 REMOCON
69 POWER_ON
74 X-RAY
36 TEST 3
G-1
G-2