Toshiba 14AF44 User manual

SERVICE MANUAL
COLOR TELEVISION
14AF44
FILE NO. 050-200403

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
Headphone 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 DIAGRAM......................................................................................................................
PRINTED CIRCUIT BOARDS
MAIN/CRT................................................................................................................................
SCHEMATIC DIAGRAMS
MICON .....................................................................................................................................
CHROMA .................................................................................................................................
DEFLECTION/CRT..................................................................................................................
POWER ...................................................................................................................................
SOUND ....................................................................................................................................
TUNER/STEREO.....................................................................................................................
AV ............................................................................................................................................
COMB/FILTER.........................................................................................................................
CRT/SVM.................................................................................................................................
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-5
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
G-11, G-12
G-13, G-14
G-15, G-16
G-17, G-18
H-1, H-2
I-1, I-2
J1-1
J2-1~J2-4
A2-1

GENERAL SPECIFICATIONS
G-1 TV CRT CRT Size / Visual Size 14 inch / 357mmV
System CRT Type Flat
Deflection 90 degree
Magnetic Field BV/BH +0.45G/0.18G
Color System NTSC
Speaker 2 Speaker
Position Front Side
Size 1.6 x 2.8 Inch
Impedance 8 ohm
Sound Output MAX 2.5+2.5 W
10%(Typical) 2.0+2.0 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 Yes
Tuner Sound Muting Yes
G-3 Power Power Source AC 120V AC 60Hz
DC
Power Consumption at AC 80 W at AC 120 V 60 Hz
Stand by (at AC) 3 W at AC 120 V 60 Hz
Per Year -- kWh/Year
Protector Power Fuse Yes
Safety Circuit Yes
IC Protector(Micro Fuse) No
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 Icon
Picture Yes
Contrast Yes
Brightness Yes
Color Yes
Tint Yes
Sharpness Yes
Audio Yes
Bass Yes
Treble Yes
Balance Yes
Stable Sound On/Off Yes
Surround On/Off Yes
Set Up Yes
TV/CATV Yes
Auto CH Memory Yes
Add/ Delete Yes
Option Yes
Language Yes
CH Label Yes
Favorite CH Yes
V-Chip Yes
Lock Yes
On/Off Timer Yes
Color Stream DVD/DTV Yes
Control Level Yes
Volume Yes
Brightness Yes
Contrast Yes
Color Yes
Tint Yes
Sharpness Yes
Tuning No
Bass Yes
Treble Yes
Balance Yes
Back Light No
Stereo,Audio Output,SAP Yes
Video Yes
Color Stream Yes
Channel(TV/Cable) Yes
CH Label Yes
Game Timer Yes
Sleep Timer Yes
Sound Mute Yes
V-chip Rating Yes
16: 9 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 / Clock) 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-GW
Control Glow in Dark Remocon Yes
Format Toshiba
Custom Code TV:40-BF h
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys 50 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 Yes
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/Enter Yes
Mute Yes
Exit Yes
MTS(Audio Select) Yes
Fav.Up Yes
Fav.Down Yes
16: 9 Yes
Multi Brand Keys CH Up(VCR) Yes
CH Down(VCR) Yes
Pause/Still Yes
TV/VCR(VCR) Yes
FF Yes
Rew Yes
Rec Yes
Play Yes
Stop Yes
TV Yes
VCR Yes
Cable Yes
DVD Yes
CODE Yes
Volume Up(DVD) Yes
Volume Down(DVD) Yes
DVD CLEAR Yes
TOP MENU Yes
DVD MENU Yes
DISPLAY Yes
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,Toshiba Type
BBE No
Auto Search No
CH Allocation No
SAP Yes
Just Clock Function No
CH Label Yes
VM Circuit No
Full OSD No
Premiere No
Comb Filter Yes
3 Lines
Auto CH Memory Yes
Hotel Lock No
Closed Caption Yes
Stable Sound Yes
FBT Leak Test Protect Yes
CH Lock Yes
Video Lock Yes
Game Timer (Max Time:120 Min) Yes
Energy Star No
Favorite CH Yes
Surround Yes
16:9 Mode Yes
G-12 Accessories Owner's Manual Language English / French
W/ Warranty 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 Station List No
Important Safety Instructions 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
OEM Brand No
AC Cord No
AV Cord (2Pin-1Pin) No
Registration Card (NDL Card) Yes
PTB Sheet No
ESP Card No[From '04 MAR O/R]
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 Yes
Channel Down Yes
Volume Up Yes
Volume Down Yes
Rear AC/DC No
TV/CATV Selector No
Degauss No
Main Power SW No
Indicator Power Yes(RED)
Stand-by No
On Timer No
Terminals Front Video Input = VIDEO3 RCA
Audio Input = VIDEO3 RCA x 2
Other Terminal Head Phone
Rear Video Input(Rear1) = VIDEO1 RCA
Video Input(Rear2) = VIDEO2 RCA
Audio Input(Rear1) = VIDEO1 RCA x 2
Audio Input(Rear2) = VIDEO2 RCA x 2
Video Output No
Audio Output No
Euro Scart No
Color Stream RCA x 3
S Input Yes
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) 432 x 386 x 344.5
G-15 Weight Net (Approx.) 11.0kg ( 24.3 lbs)
Gross (Approx.) 13.0 kg ( 28.7 lbs)
G-16 Carton Master Carton No
Content ---- Sets
Material -- /--
Dimensions W x D x H(mm) -- x -- x --
Description of Origin --
Gift Box Yes
Material Double/Brown
Dimensions W x D x H(mm) 540 x 460 x 465
Design As per Buyer's
Description of Origin Yes
Drop Test Natural Dropping At 1 Corner / 3
Edges / 6 Surfaces
Height (cm) 62
Container Stuffing 550 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
G-18 Environment Pb Free Lead-free Solder No
Cd Free No
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
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, always be 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
4. 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.)

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.
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 1F due to the adjustment value.
50
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
INI
10
00 65 5E B3 24 B7 39 AC 0A 04 40 40 40 7FE8 0A
00 00 00 0000
50 00 00 28 0F 0D E2 A6 88 42 00

ELECTRICAL ADJUSTMENTS
D-1
1.
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.)
BEFORE MAKING ELECTRICAL
ADJUSTMENTS
Prepare the following measurement tools for electrical
adjustments.
•
•
•
•
1. Oscilloscope
2. Digital Voltmeter
3. Multi-sound Generator
4. Pattern Generator
On-Screen Display Adjustment
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.
1.
Fig. 1-1
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.
2.
3.
FUNCTION
OSD H
CUT OFF
H.VCO
H.PHASE
AFC GAIN
V.SHIFT
H.SIZE
V.SIZE
V.LINEARITY
VS CORRECTION
DRIVE R
DRIVE B
R CUT OFF
NO.
00
01
02
03
04
05
06
07
08
09
10
11
12 Fig. 1-2
FUNCTION
G CUT OFF
B CUT OFF
BRIGHT MAX
BRIGHT CENT
BRIGHT MIN
CONTRAST MAX
CONTRAST CENT
CONTRAST MIN
COLOR MAX
COLOR CENT
COLOR MIN
TINT
SHARPNESS
NO.
13
14
15
16
17
18
19
20
21
22
23
24
25
TV
00 OSD 24
2. BASIC ADJUSTMENTS
2-2: CUT OFF
1.
2.
3.
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.
2-3: 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. DRIVE”.
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.
2-4: FOCUS
1.
2.
3.
Receive a broadcast.
Turn the Focus Volume fully counterclockwise once.
Adjust the Focus Volume until picture is distinct.
2-1: CONSTANT VOLTAGE
1.
2.
3.
4.
5.
Place the set with Aging Test for more than 5 minutes.
Set condition is AV MODE without signal.
Using the remote control, set the brightness and contrast
to normal position.
Connect the digital voltmeter to the TP003.
Adjust the VR502 until the digital voltmeter is 115 ±1V.
FUNCTION
CB DELAY FINE
CR DELAY FINE
CB PEDESTAL ADJ
CR PEDESTAL ADJ
E/W PARABOLA
E/W CORNER
E/W TRAPEZIUM
LEVEL
SEPARATION 1
SEPARATION 2
NO.
26
27
28
29
30
31.
32.
33.
34.
35.
2-5: 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 (03) 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.
2-6: VERTICAL POSITION
1.
2.
3.
Receive the monoscope pattern.
Using the remote control, set the brightness and contrast
to normal position.
Adjust the VR401 until the horizontal line becomes fit to
the notch of the shadow mask.

ELECTRICAL ADJUSTMENTS
D-2
2-7: VERTICAL SIZE
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. 1-1 and
press the channel button (07) 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 9 ±2%.
Receive a broadcast and check if the picture is normal.
2-8: VERTICAL LINEARITY
NOTE: Adjust after performing adjustments in section 2-7.
After the adjustment of Vertical Linearity, reconfirm
the Vertical Position and Vertical Size adjustments.
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 (08) on the remote control to
select "V.LIN".
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on upside
and downside becomes minimum.
1.
2.
3.
4.
2-10: TINT/COLOR CENT
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14
15.
16.
17.
Fig. 2-1
Receive the color bar pattern. (RF Input)
Connect the oscilloscope to TP024.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (24) on the remote control to
select “TINT”.
Press the VOL. UP/DOWN button on the remote control
until the section “A” becomes a straight line
(Refer to Fig. 2-1).
Connect the oscilloscope to TP023.
Press the CH DOWN button 2 times to set to “COL.
CENT” mode.
Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set to 5 scales on the screen of the oscilloscope.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 115 ±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
2~9.
Press the TV/VIDEO button on the remote control to set
to the CS mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (24) on the remote control to
select “TINT”.
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "55".
Press the CH DOWN button 2 times to set to
“COL.CENT” mode.
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "50".
Receive a broadcast and check if the picture is normal.
“A”
Fig. 2-2
White 100%
RED Level
2-9: BRIGHT CENT
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
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 (16) on the remote control to
select "BRI CENT".
Press the VOL. UP/DOWN button on the remote control
until the white 0% 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.
Press the TV/VIDEO button on the remote control to set
to the CS mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (16) on the remote control to
select "BRI CENT".
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "77".
Receive a broadcast and check if the picture is normal.

ELECTRICAL ADJUSTMENTS
D-3
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (18) on the remote control to
select "CONT.MAX".
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "74".
Receive a broadcast and check if the picture is normal.
Press the TV/VIDEO button on the remote to set to the
AV mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (18) on the remote control to
select "CONT.MAX".
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "86".
Receive a broadcast and check if the picture is normal.
Press the TV/VIDEO button on the remote to set to the
CS mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (18) on the remote control to
select "CONT.MAX".
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "90".
Receive a broadcast and check if the picture is normal.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
2-11: CONTRAST MAX MANUAL
2-12: SEPARATION 1, 2
Please do the method (1) or method (2) adjustment.
Method (1)
1.
2.
3.
4.
5.
Set the multi-sound signal generator for each different L-
ch and R-ch frequency (Ex. L-ch=2KHz, R-ch=400Hz) and
receive the RF.
Connect the oscilloscope to the Audio Out Jack.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select “SEP 1”.
Press the VOL. UP/DOWN button on the remote control to
adjust it until the audio output wave becomes a fine sine
wave.
Press the CH UP button once the set to “SEP 2” mode.
Then perform the above adjustment 4.
Method (2)
1.
2.
3.
4.
5.
6.
7.
8.
9.
Set the multi-sound signal generator L-ch=1KHz, R-ch
=Non input and receive the RF.
Connect the oscilloscope to the Audio Out Jack (R-ch).
Press the AUDIO SELECT button on the remote control to
set to the stereo mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select “SEP 1”.
Press the VOL. UP/DOWN button on the remote control to
adjust it until the R-ch output becomes minimum.
Set the multi-sound signal generator L-ch=Non input,
R-ch=1KHz and receive the RF.
Connect the oscilloscope to the Audio Out Jack (L-ch).
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (35) on the remote control to
select “SEP 2”.
Press the VOL. UP/DOWN button on the remote control to
adjust it until the L-ch output becomes minimum.
2-13: LEVEL
1.
2.
3.
4.
Receive the monoscope pattern (70dB).
Connect the AC voltmeter to pin 6 of CP101.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (33) on the remote control to
select "LEVEL".
Press the VOL. UP/DOWN button on the remote control
until the AC voltmeter is 75 ±2mV.
Please check if the fixed values of the each adjustment
items are set correctly referring below.
2-15: Confirmation of Fixed Value (step No.)
NO.
02
04
05
06
09
15
17
19
20
21
23
25
26
27
30
31
32
FUNCTION
H.VCO
AFC GAIN
V.SHIFT
H.SIZE
VS CORRECTION
BRIGHT MAX
BRIGHT MIN
CONTRAST CENT
CONTRAST MIN
COLOR MAX
COLOR MIN
SHARPNESS
CB DELAY FINE
CR DELAY FINE
E/W PARABOLA
E/W CORNER
E/W TRAPEZIUM
STEP NO.
03
04
00
00
39
125
50
50
18
90
00
40
00
00
31
31
31
2-14: OSD HORIZONTAL
1.
2. 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)
BA
TV
00 OSD 24
Fig. 2-3

ELECTRICAL ADJUSTMENTS
D-4
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-5
CP803 CP801B
CP802B
CD802
CP806
R803
R805
TP024
TP023
J801
W003
TP003
VR502
CP101
CP801A
FB401
J705 J706 J707
CP802A
TU001
VR401
CD801
CRT
CRT
CP401
CP1001
SPEAKER
CRT PCB
MAIN PCB
CRT
L503
CP502
CP501
AC IN
CD501

3
2
7
5
1
HEADPHONE_JACK
J1001
SPEAKER
SP1001
BLOCK DIAGRAM
CHROMA IC
IC601 M61283FP R70T
VIDEO LINE OUT
60
Y IN(Y/C)
51
42
49
53
38
48
CVBS1
C IN(Y/C)
CVBS2
CVBS3
CVBS4
Y IN(YUV)
44 U IN(YUV) X101
8MHz
D109
1
OS101
23
R IN
VOL UP
46
VOL DOWN
CH DOWN
MICON IC
IC101 OEC7090A
B IN 21
35 GREEN G
36 BLUE B
J801
9
3
7
F
8
DY
G IN 22
34 RED R
40 V IN(YUV)
POWER
8
63
V OUT
H OUT
FAST BLK 24
V-OUT IC
IC401 LA78040N-E
CRT
V801
15
16
14
B OUT
G OUT
R OUT
33 BLANK
Q802, Q806
BLUE OUT Q801, Q804
RED/GREEN
OUT
Q803, Q805
GREEN/RED
OUT
FB401
Q405
Q402 H.OUT
H.DRIVER
5
1
18
16 3
COMB FILTER IC
IC1501 LA76605M-TLM
C OUT
Y OUT Y IN
4
2
VIDEO SW(Y) IC
IC1502 MM1501XNRE
Vin1
Vin2
V.OUT
2
VIDEO SW(C) IC
IC1503 MM1501XNRE
6
4
6Vin1
Vin2
V.OUT
3
S-JACK
J702
4
LINE1(REAR)
J701
6
LINE2(REAR)
J703
6
FRONT -VIDEO
J705 2
5
YUV_IN(REAR)
J704
3
2
2
SOUND DECORDER IC
IC902 AN5829S
24
14
23
3
6
42
AUDIO SW(L) IC
IC702 MM1501XNRE
Vin1
Vin2 V.OUT
FRONT-AUDIO.L
J706
FRONT-AUDIO.R
J707
2
3
2
3
2
6
4
2
AUDIO SW(R) IC
IC701 MM1501XNRE
Vin1
Vin2
V.OUT
2
3
30 19
TONE CONTROL IC
IC302 AN5891SA-E1V
16 2
5 7
SOUND AMP IC
IC1001
AN17808B
12
SPEAKER
SP1002
21
22
TU001
17
13
11
10 27 SCL
26 SDA
6
5
MEMORY IC
IC199 S-24C16AFJA-TB-01
SCL
SDA
30 SCL1
31 SDA1
10
ON_TIMER
6
KEY1
7
KEY2
9
REMOCON
19
X.IN
20
X.OUT
CH UP
X602
3.579545MHz
34
XTAL 3.58
18
19
Q603, Q614, Q605
AMP 1
F
SHV
E-1 E-2

TMC559D
CP507
Q514
D524
R543_1
D507
R544
R545
CP508
C503
C502
Q402
D411
W004
W007
W003
W006
W801
B501
T501_1
FH502 F501 FH501
CP501
CP502
D502
D503
D501
TH501_1
R500
D523
RY501
C506_1
R520
R540
R501
L501
C505_1
D516
R503
C403
C504
D505
D520
Q504
B504
C527
C520
C516
C501
D511
D406
W002
W010
W018
R452_1
C517
R430
C408
R429
R433
R416
R413
R420
CP401
R443
R437
R441
R414
R428
W020 IC401
R432
R439
C426
D404
D415
D410
D403
W019
R424
R527
R506
D528
Q507
R553
R554
VR502
CP101
D402
HS402
C425
CP801A
FB401
C412
C418
C420_1
L402_1
W011
W009
W071
R406
R421
IC504
W001
C409 C539
C430
C407
C406
R502
D506
Q502 R542
C509
HS501
W005
D414
R547
D525
W825
R517_1
L401
C410
D504
Q503 R507
R536
R535
R505
W806
D517
D513
R512
R410_1
T401_1
W807
J704
J702
J1001 J705
J706
J707
W179
W177
W178
CP1001
R1001
R1002
R537
C904 C905
C907 C916
W119
C910
C914
L901
C903
C902
C901
R905
R904
R901
R902
W125
W174
W175
L301
C302
C306
R301
C305
C308
C314
C316
R302
C333
C304
SW105
R120
OS101
C108
D109
SW102
R515
W053
W822
W120
C122
C110
R139
R140
SW103 SW104 SW101
R102
W128
W129
R119
W118
W121
D105
C109
W126
D104
W055
C113
D106
W049
R133
W052
W056
W093 W116
C317
C319
W181
W180
W832
Q405
W160
D608
W028
W176
R002
R001
W027
W109
W098
C535
R539
W831
W161
CP802A
W023
W041
W099
W114
W102
W104
W106
W112
R124
W094
W111
W044
TU001
D001
D709
W062
W133
C701 C702
C1011
C1004
C1007
C1009
C1008_1
IC1001
HS1001
R1009
W803
W136
W137
W130
C1005
W138
W072
W134
W060
C1518
C1510
L1505
L1503
L1502
L1508
C1520 C1501
C1502
L1511
C1528
L1510
C1525
W156
W858
W166
W077
W076
C001_1
L1501
C1532
W146
W145
C642
C605
D602
D601
R603
D603
W162
X602
C630
C627
C622
Q607
W075
W058
W070
W073
W108 W107
W030
C621
W061
W069
C618
W067
W090
C611
Q606
Q604
Q602
C610
R649
C603
W059
R616
W151
W150
W147
W144
W173
Q601
Q611
C602
R601
C606
W172
W082
R132
W029
W103
W113
W805
W168
L1512
R626
R623
W097
W167
W170
W100
W139
C615
W115
Q806
Q804
Q805
C802
R806
D812
D810
D811
Q802
Q801
Q803
D802
D803
CP806
CP803
R807
R803
CP801B
R802
W802
R804
W015
J801_2
R805
W016
CP802B
C413_1
D509
R508
D604
D514
W043
W132
C1003
W074
C919
C1001
C1002
D407
W850
W813
C114
W021
VR401_1
R422
R418
W143
W088
W089
W068
W054
R146
D510
W812
C733
D701
D703
D702
B405
C1535
W148
W149
W154
R602
C609
W155
R510
W013
C608
R648
W140
R303
R304
W163
W164
W165
D706
W117
W080
W022
W025
W048
D705
D704
W091
W123
R130
W157
C139
W033
J701 J703
W035
W032
W037
W038W040
W064
W063
W135
R546
C645
W081
W083
R701
C705 C629
W045
W046
D607
D605 D606
W169
C1530
W026
W084
W131
C402
C417
C508_1
C512
C513_1
C519_1
C524
D512
R426
R436
R824
W012
W821
W823
W065
W183
C401
C427
C521
W185
W110
W042
W039
W186
D508
R524
W187
C550
C523
Q505
Q508
Q509
Q512
R438
R541_1
C507
X101_1
C638
D113
D405
W141
C801
W008
W861
C646 W184
W087
W142
W811
W844
W853
W828
W827
W819
W820
W815
W817
W829
W863
W830
W848
W862
S804X
S804Y
R402
W847
W857
C422
CD801A
CD801B
CD802A
CD802B
W092
C415
PRINTED CIRCUIT BOARDS
MAIN/CRT (INSERTED PARTS)
SOLDER SIDE
D801
F-1 F-2

TMC559D
17
33
49
1
C541
R453
R525
C511
R403
R417
R415
C405
R532 R533
C554
R407
R513
R511
R404
R745
C741
C742
R746
C720
C719
R724
IC902
C908
C912
C915
C918
R907
Q902
R906
Q901
R903
C917
C913
C911
R912
IC302
C303
C312
C301
R314
R103 R106
R138
R135
C128
IC199_1
R122
IC101
R112
R110
C131
R131
C117
C121
R128
R142
R129
R126
C102
C104
R113
C106
R136
C119
C111
R101
R114
Q101
R109
R125
C120
R150
Q103
R127 R141 C124 C126
R143
C149 C135
R145
C115_1
C309 C307
C310
C313
C322
C320
IC601
C439
R516
C002
C734 R735
R739
C736 C738
R733
R729 R726
C725
C722
R734
R727
C735
R728
C724 C727
C737
IC701
IC702
C706
R730
R736
R725
R1013
Q1001
R1003
R1011
R1004
R1010
C1010 C1012
R006
IC1503
IC1502
C1512
C1516
R1529
R1528
R1505
Q1503
C1513
C1517 R1506
R1507
C1519
C1509
C1515
C1504
R1504
C1514
R1503
C1506
C1507
IC1501
C1503
R1502
C1521 C1508
R1508
Q1504
R1509
R1510
C1531
Q1508
R1530 C1505
Q1507
R1516
C1526
R1518
R1519
C1523
C641
R1520
C1533
R632
C136 C137 C138
C632 R618
C631
C624
C614
R610
C607
R617
C640
R628
Q603
R604
R625
R1523
R609
R629
R622
R634
R620
C612
C616
R611
R641
R635
C628_1
R821
C805
R814
R816
R809
R813
R811
R815
C810
C811
C809
R808
R810
R801
R819
R818
R817
R823 R822
R612
R636
C005
R1522
R401
R1512
Q605
R607
R605 R606
Q614
C315 C311
C334
R653
R652
R613
C635 R651
C644
C643C637
C140
C141
C145
C142
R519
R134
R627
C146
C411
C619_1
R654
R409_1
R137
R657
C148
C147
C129
C639
C647
C416
R608
PRINTED CIRCUIT BOARDS
MAIN/CRT (CHIP MOUNTED PARTS)
SOLDER SIDE
F-3 F-4
B_SHORT