Toshiba 14AF41 User manual

SERVICE MANUAL
COLOR TELEVISION
FILE NO. 050-200106
14AF41

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

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 Others
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) 4 W at AC 120 V 60 Hz
Per Year -- kWh/Year
Protector Power Fuse Yes
G-4 Regulation Safety UL
Radiation FCC
X-Radiation DHHS
G-5 Temperature Operation +5oC ~ +40oC
Storage -20oC ~ +60oC
G-6 Operating Humidity Less then 80% RH

GENERAL SPECIFICATIONS
G-7 On Screen Menu Yes
Display Menu Type Icon
Picture Yes
Contrast Yes
Brightness Yes
Color Yes
Tint Yes
Sharpness Yes
Sound Yes
Bass Yes
Treble Yes
Balance Yes
Stable Sound 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
Color Stream DVD/DTV Yes
Control Level Yes
Volume Yes
Brightness Yes
Contrast Yes
Color Yes
Tint (NTSC Only) 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
Sleep Timer Yes
Sound Mute Yes
V-chip Rating Yes
G-8 OSD Language English French Spanish
OSD Language Setting English
G-9 Clock and Sleep Timer Max Time 120 Min
Timer Step 10 Min
On/Off Timer Program(On Tim / Off Tim) No
Wake Up Timer No
Timer Back-up (at Power Off Mode) more than -- Min Sec

GENERAL SPECIFICATIONS
G-10 Remote Unit RC-DU
Control Glow in Dark Remocon Yes
Format Toshiba
Custom Code TV:40-BFh
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys 42 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
C.C.(TV/Caption/Text) Yes
CH1/CH2 Yes
TV/Video(Input Select) Yes
CH RTN(Quick View) Yes
SLEEP Yes
RECALL(Call) Yes
Reset Yes
Menu/Enter Yes
Mute Yes
Exit Yes
MTS(Audio Select) Yes
Fav. Up Yes
Fav. Down 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
CODE Yes

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
Channel Lock No
Just Clock Function No
Game Position No
CH Label Yes
VM Circuit No
Full OSD No
Premiere No
Comb Filter Yes
2 Lines
Auto CH Memory Yes
Hotel Lock No
Closed Caption Yes
Stable Sound Yes
FBT Leak Test Protect Yes
Favorite CH Yes
G-12 Accessories Owner's Manual Language English
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 Safey Instructions Yes
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 Yes
300 ohm to 75 ohm Antenna Adapter No

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 RCA
Audio Output RCA x 2
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) 515 x 460 x 423
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 575 Sets/40' container
G-17 Cabinet Material Cabinet Front PS 94V0 DECABROM
Cabinet Rear PS 94V0 DECABROM

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

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

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

INIT 00 83
0010
CRT ON
ADDRESS DATA
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
VOL. (-) MIN 6
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 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 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 Channel
button (6) on the remote control for more than 1 second.
After the confirmation of using hours, turn off the power.
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)
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.
Table 1
1.
2.
3.
4.
5.
6.
7.
8.
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.
E1 C3 CF 00 31 B3 27 17 BB A8
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +FINI
0F --- --- --- --- --- --- --- ---
10 --- --- --- --- --- --- ---
00 F4 44 00 00 00 4A

ELECTRICAL ADJUSTMENTS
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.
Inferior silicon grease can damage IC's and transistors.
When replacing IC's and transistors, use only specified
silicon grease.
Remove all old silicon before applying new silicon.
1. Oscilloscope
2. Digital Voltmeter
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.
Prepare the following measurement tools for electrical
adjustments.
FUNCTION
OSD H
CUT OFF
RF. AGC
---
H. POSI
V. POSI
H. SIZE
V. SIZE
V. CENT
V. LIN
VS. CORR
G. DRV
B. DRV
R. BIAS
G. BIAS
B. BIAS
BRI
NO.
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
FUNCTION
SUBCONT
UNI COL
---
TINT
SHARP
RGB CONT
PARABOLA
TRAPEZIU
COR TOP
COR BTM
V EHT
H EHT
FM. LVL
LEVEL
SEP1
SEP2
T. STE
NO.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
2. BASIC ADJUSTMENTS
TV
00 OSD 15
BEFORE MAKING ELECTRICAL
ADJUSTMENTS
Fig. 1-2
2-1: CONSTANT VOLTAGE
1.
2.
3.
Set condition is AV MODE without signal.
Connect the digital voltmeter to TP002.
Adjust the VR502 until the digital voltmeter is 115 ±1V.
2-2: RF AGC
1.
2.
3.
4.
Receive a 70dB monoscope pattern.
Connect the digital voltmeter between the TP001 and
the GND.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (02) on the remote control to
select "RF. AGC".
Press the VOL. UP/DOWN button on the remote
control until the digital voltmeter is 1.95 ±0.05V.
2-3: CUT OFF
1.
2.
3.
4.
Adjust the unit to the following settings.
G. DRIVE=64, B. DRIVE=64, R. BIAS=32, G. BIAS=32,
B. BIAS=32, BRIGHTNESS=64, UNI COLOR=50.
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: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1.
2.
3.
4.
5.
6.
7.
8.
Place the set with Aging Test for more than 10 minutes.
Receive the white 100% signal from the Pattern
Generator.
Using the adjustment 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 "R. BIAS".
Using the VOL. UP/DOWN button on the remote control,
adjust the R. BIAS.
Press the CH. UP/DOWN button on the remote control to
select the "G. DRV", "B. DRV", "G. BIAS" or "B. BIAS".
Using the VOL. UP/DOWN button on the remote control,
adjust the G. DRV, B. DRV, G. BIAS or B. BIAS.
Perform the above adjustments 6 and 7 until the white
color is looked like a white.
2-5: FOCUS
1.
2.
3.
Receive a 70dB monoscope pattern.
Turn the Focus Volume fully counterclockwise once.
Adjust the Focus Volume until picture is distinct.
2-6: HORIZONTAL POSITION
1.
2.
3.
4.
Receive the center cross signal 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 (04) on the remote control to
select "H. POSI".
Press the VOL. UP/DOWN button on the remote
control until the right and left screen size of the vertical
line becomes the same.

ELECTRICAL ADJUSTMENTS
2-7: HORIZONTAL SIZE
NOTE: Adjust after performing adjustments in section 2-6.
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 "H. SIZE".
Press the VOL. UP/DOWN button on the remote
control until the SHIFT quantity of the OVER SCAN on
right and left becomes 10 ±2%.
2-8: VERTICAL POSITION
NOTE: Adjust after performing adjustments in section 2-7.
1.
2.
3.
Receive the center cross signal from the Pattern
Generator.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (05) on the remote control to
select "V. POSI".
Press the VOL. UP/DOWN button on the remote
control until the horizontal line becomes fit to the notch
of the shadow mask.
2-9: VERTICAL SIZE
NOTE: Adjust after performing adjustments in section 2-8.
1.
2.
3.
4.
Receive the crosshatch signal from the Pattern
Generator.
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 rectangle on the center of the screen
becomes square.
Receive a broadcast and check if the picture is normal.
2-10: PARABOLA
1.
2.
3.
4.
Receive the crosshatch signal 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 (23) on the remote control to
select "PARABOLA".
Press the VOL. UP/DOWN button on the remote control
until the right and left vertical lines are straight.
2-11: TRAPEZIUM
1.
2.
3.
4.
Receive the crosshatch signal 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 (24) on the remote control to
select "TRAPEZIU".
Press the VOL. UP/DOWN button on the remote control
until the both vertical lines of the screen become parallel.
2-12: CORNER CORR TOP
1.
2.
3.
4.
Receive the crosshatch signal 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 (25) on the remote control to
select "COR TOP".
Press the VOL. UP/DOWN button on the remote control
until the upper section of the both ends vertical lines are
straight.
2-13: CORNER CORR BOTTOM
1.
2.
3.
4.
Receive the crosshatch signal 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 (26) on the remote control to
select "COR BTM".
Press the VOL. UP/DOWN button on the remote control
until the bottom section of the both ends vertical lines
are straight.
B
A
TV
00 OSD 15
Fig. 2-1
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. 2-1)
2-15: LEVEL
1.
2.
3.
4.
Receive a 70dB monoscope pattern.
Connect the AC voltmeter to TP901.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (30) on the remote control to
select "LEVEL".
Press the VOL. UP/DOWN button on the remote
control until the AC voltmeter is 75 ±2mV.

ELECTRICAL ADJUSTMENTS
2-16: SEPARATION 1, 2
Receive the stereo signal (L=2KHz, R=400Hz).
Connect the AC voltmeter to AUDIO OUT JACK though
stereo filter (L=400Hz, R=2KHz).
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (31) on the remote control to
select "SEP1".
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 the set to "SEP2" mode.
Press the VOL. UP/DOWN button on the remote control
until the output of L-CH and R-CH become minimum.
Press the CH DOWN button once the set to "SEP1"
mode.
Repeat step 4 to step 7 several times.
The output difference of the between with Filter and
without Filter should be more than 25db for both L and R.
1.
2.
3.
4.
5.
6.
7.
8.
2-19: SUB TINT/SUB COLOR
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Receive the color bar pattern. (RF Input)
Connect the oscilloscope to TP806.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (20) 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 Fig. 2-2).
Connect the oscilloscope to TP804.
Press the CH DOWN button 3 times to set to
"SUBCONT" mode.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 100% of the white
level. (Refer to Fig. 2-3)
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.
Receive the color bar pattern. (Audio Video Input)
Press the TV/VIDEO button on the remote control to set
to the CS mode. Then perform the above adjustments
2~6.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 100% of the white
level. (Refer to Fig. 2-3)
2-17: BRIGHTNESS
1.
2.
3.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (16) on the remote control to
select "BRI".
Press the VOL. UP/DOWN button on the remote control
until the brightness step No. becomes "68"
Press the TV/VIDEO button on the remote control to set
to the AV mode. Then perform the above adjustments
1~2.
Press the TV/VIDEO button on the remote control to set
to the CS mode. Then perform the above adjustments
1~2.
2-18: UNI-COLOR
1.
2.
3.
4.
5.
6.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (18) on the remote control to
select "UNI COL".
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "49"
Press the TV/VIDEO button on the remote control 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 "UNI COL".
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "49"
Press the TV/VIDEO button on the remote control to set
to the CS mode. Then perform the above adjustments
4~5.
Fig. 2-3
White 100% RED Level
Fig. 2-2
"A"

ELECTRICAL ADJUSTMENTS
3.
1.
2.
3.
1.
2.
3.
4.
5.
6.
7.
8.
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
3-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT)
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.
3-3: STATIC CONVERGENCE
1.
2.
3.
3-4: DYNAMIC CONVERGENCE
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
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.
UPWARD/DOWNWARD SLANT RIGHT/LEFT SLANT
Adjust after performing adjustments in section 3-2.
Adjust after performing adjustments in section 3-1.
3-2: PURITY
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.
NOTE NOTE
NOTE
NOTE

MAJOR COMPONENTS LOCATION GUIDE
FOCUS VOLUME
SCREEN VOLUME
FB401
MAIN PCB
TP001
J702
J701
J703
J704
J705
TP002
T501
VR502
CRT PCB
J801
TP806 TP804
TP901
TU001

TU001
MICON IC
IC101 OEC7054A
CHROMA IC
IC201 TB1253N
SOUND DECORDER IC
IC902
AN5829S
AV SWITCH IC
IC701
MM1311AD
SOUND AMP IC
IC353
AN5276
CRT
V801
V.OUTPUT IC
IC401
AN5522
SW. REG. IC
IC501
STR-G6623
FBT
FB401
CRT DRIVE
R
L
R
G
B
+14V
SOUND+B
+B
SPEAKER
SP351 SPEAKER SP352
LINE1
TONE CONTROL IC
IC303
M62420SP
HEAD
PHONE JACK
DIGITAL COMB FILTER IC
IC1501
TC90A45F
+180V VIDEO3
LINE2
YUV IN
Y
S-JACK
IF
11 SCL
4
SDA
5
39
37
SCL
SDA
SCL
24
SDA
25
18 19
18
17
12 7
2 5
14 7
19 2
24 23
21 22
30
32
31
25
22
20
27 29
9
6
3
5
2
4
1
714 15 13 8 10
C
Y
C
L
R
V
4 1
15
13
35
T501
13
15
25
34 28 16 15 14 42 47 55
38
31
7
9
3
51
14
4
6
HV
1
79
F10
S
1
5
67
R
G
B
DY
8F4 LRVLRV
V OUT
FBP IN H OUT
ABCL
B OUT
G OUT
R OUT C IN
CVBSLNT IN
IF DET OUT
IF IN IF IN
9
10 SCL
SDA
SCL
SDA
43 44
YUV IN
H. OUT
Q402
Q405
BLOCK DIAGRAM
27
VOC
3
1
RESET IC
IC103 PST600C
6
5
MEMORY IC
IC199
S-24C08ADPA-01
1
IC 503
KIA7805API
IC 502
KIA7809API
1
AT+5V
P.CON+9V

L1503
C1517
C1520
C1511
L1501
L1502
L1504
C1525
W802
L1506
W801
L1505
CP1501
C1532
CP801
CP802
CP804
R806
R808
R804
Q802
Q801
L803
L802
Q803
Q810
Q811
Q812
C808
D803
R811
R821
C806
R830
R816
R809
C813
R801
R810
R812
R817 R819
R814
C804
C805
D802
D801
R828
R813
R815
R803
C809
R829
J801
W002
TP804
TP806
TP805
CP803
W003
L804
R802
W001
W804
W809
W810
C823
CD801
CD802
R1503
R1504
R1502
Q1501
C1519
C1504
R1505
R1501
R1506
C1510
C1521
C1515
C1516
C1514
R1517
R1510
R1518
R1516
Q1504
C1506
C1507
C1509
C1508 C1512
Q1503
R1511
R1512
C1501
C1528
IC1501
C1513
R1513
Q1502
R1508
C1503
C1526
C1505
C1522
R1509
W808
PRINTED CIRCUIT BOARDS
COMB CRT
SOLDER SIDE
(CHIP MOUNTED PARTS)
SOLDER SIDE
(INSERTED PARTS)
SOLDER SIDE

TU001
J702
J704
OS101
D109
SW105
SW102SW101SW104SW103
J351
CP101
J710
J711
J712
J703
J701
D503
D504
D501
D502
TH501
CP502
CP501 FH501
FH502 F501
R500
R501
R502
D521
R503
IC501
B502
Q502
C505
L501
C506
C513
C519
RY501
C510
W002
D506
T501
R542
HS501
R506
C507_2
W003
D507
R543
B505
D518
C522
C424
L401
C412
C423_1
C420_1
C422
R421
C426
D412
R411
R431_1
R439
CP401
L402
D408
D409
R438
R432
C415
D407
HS402
Q405
IC401
C427
W001
R425
R429
C411
C414
W014
Q507
D508
D516
Q504
R523
R515
R554 R553
R508
D514
Q510
D511
IC503 IC502
HS502 C531
C532
C504
D525
D512
Q508
R521
R522
Q501
C533
D513
B504
D510
C523
D519
D520
W010
D517
R001
W008
C408
C409
R428
D402
C407
R416_1
R413 R414
C406
W012
Q402
R410
T401
R406
C402
C403
R519
W023
W024
D405
D411
C430
Q403
Q401
R436
R441
R422
D401
HS401
Q404
W011
R418
R423
W017
R430
C417
R437
R408
R509
D406
VR502
D505
C530
W025
CP801A
R505
CP504
CP503
W067
IC701
R705 R707
R702 R708
W109
C715
C004
D001
C003
W112
W111
C744
C743
D711
C747
C745
C714
C713
C733
C735
C367 C369
IC353
C364
C366
W114
R517
W045
W038
W074
W053
W051
W049
W034
W113
C608_1
C216
C604
C214
C211
L204
CF203
CF201
C612
C616
C630
X601
CF202 C209
IC201
C204
L203
W122
C203
C785
C784
W037
W116
W125
W124
W040
W041
W042
W039
W115 W036
W072
W070
W071
D603
W059
W134
W133
W068
W099
D604
D602
W069
W121
W064
D614
D613
D611
W098
W090
W117
W835
L701 W055
W054
C740
C738
R778
W801
IC303
C326
C351
IC101
D107 D104
R107
IC199
W108 IC103
L101
D103
C111
R131
R128
C122
C119
C118
C123
R326
R109
C783
R357
R358
CP351
C724
C725
W137
W106
W078
C929
C921
C925
C919
C918
C917 R907
R908
R786
W136
W138
W126
W127
W075
W089
W129
W128
W083
W080
W018
CP802A
W103
W058
W061
W100
W101 W085
W084
W131
W132
W095
W063
C428
C328
C329
C213
C711
C303
C624
C615
C924
C625
R743
R407
W827
L901
D102
L302
W091
W015
R139
R141
L301
W044
W073
W013
W804
C436
W020
J705
W047
W048
W110
W104
C116
W823
W822
D605
W088
C117
R142
W118
W043
W077
C413
W006
W107
C416
W809
W811
W065
C002
C610
W033
C527
R718
W123
C640
D528
W029
W094
W830
W081
W056
R608
C529
W028
W022
W016
R520
W021
CP901
W105
W027
W026
D515
C501_1
W839
W120
W130
W009
W019
B501 W035
W082
W087
C729
W840
W102
W842 W093
L601
C611
L205
L604
L603
L703
C514
L505
W140
R443
TP002
TP901
W119
TP001
W004
W007
C705
C439
C503_1
C502_1
R404
C425_1
C535_1
C517_1
TP003
TP004
D201
L602
C619
D404
R426
W143
C302
W144
W142 L202_1
C741
W145
C728
C730
C739
W146
W147
C536
CD701B
C935
CD701A
C737
W092
W060
W062
W046
L201
R221
C419
FB401_1
W805
W845
W816
W810
W829
W843
S803Y
S803X
X101
W828
W836
R513
W850
W838
R516
C525_1
W825
Q505
R527
W803
W831
W832
W834
D108 R137
S804Y
S804X S807X
C368
C355
W844
W858
S807Y
R512
CF204
R514
W057
W079
C401
C643
R639
R638
S802X
S802Y
S810Y
S810X
S811X
S811Y
S808X
S808Y
HS351
R534
CD801
CD802
6.3A125VOR250V
_A_V
PRINTED CIRCUIT BOARDS
MAIN (INSERTED PARTS )
SOLDER SIDE

C524_1
C509
C554_1
R533
R532
R510
R525
R511
Q509
R504
C511_1
C405_1
R415
R417
R403
R524
R409
R402
Q406
R401
C748
C727
C726
C708
C703
R711
R728
R734
R740
R755
R006
R007 C005_1
C006_1
R715
R719
R701
R752
R751
C731_1
R781
R721 R722
Q701
R361
R360
R356
R355
R724
R726
Q709
R725
C706
R203
Q201 R204
R214
Q203
C607_1
C606
C605
R205
R602
C633 R601
C603 C601 C634
C215_1
C212
C210_1
R212
Q202
R211 R215
R213
R210
R201
C201_1
R603
C617_1
R632
C626
C632_1
R625 C636
C631_1 C623_1
C622 C621
R615
C620
R609
R611 R613
R614 R612
C618_1
R610
R616
R617
R618
R624
R619
C627
C220
C207
C218_1
C208_1
C629_1 C222_1
R209 C206
C202_1
R202
C221_1
R219 R220
R218
Q204
R217
C638_1
C001_1
R138
C720_1
C380C384
C008_1
R322
C331_1
C332
R324 C334
R321
R319
C330_1 C333
C335 R325
C325
R320
R323
C336_1
C337_1
R136
R124
R119
R110
R108
C108_1
C109_1 C101_1
R133
R134
C114 C113
R121
R123
Q102
R130
R132
Q101
R117
R129
R127
R118
R114 R116
R101 R126
R104
R115
R112 R113
C107_1
R102 C121
R106
C128_1
R103
R328
C339
R327
C338_1
R730
Q704
Q705
R732
R738
R737
R739 R736
R727
R731
R125
C931
C928
C926
R905
R904
C966
C967
C932
C930
C927
C965
C959
R906
IC902
Q604
R122
R111
R412
C602
R362
C112_1
Q103
C120
Q105
Q351
C609_1
C734_1
R314
C723
R405
R363
C746
C742
C131_1
C007_1
R605
R442
R151
Q109
C132_1
R223
R150
C722
C750
C124
C637_1
C438_1
R716
R758
R757
R723
R140
R154
R604
R607
C793_1
C717_1
R756
C363_1
C365_1
C353_1
C352_1
R750
R747
C138_1
W847
W848
W849
C512_1
R135
Q506
Q104
C922
C227_1
R435
W851
C140_1
C205
R916
W855
Q107_1
R152
Q605
W860
D106
PRINTED CIRCUIT BOARDS
MAIN (CHIP MOUNTED PARTS)
SOLDER SIDE