Citizen JCTV3242 User manual

SERVICE MANUAL
JCTV3242
Design and specifications are subject to change without notice.
COLORTELEVISION RECEIVER
ORIGINAL
MFR'S VERSION A

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.
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
In the condition that an explosion-proof cathode-
ray tube is set in this equipment, safety is
secured against implosion. However, when
removing it or serving from backward, it is
dangerous to give a shock. Take enough care to
deal with it.
Safety is secured against an X-ray by consider-
ing about the cathode-ray tube and the high
voltage peripheral circuit, etc.
Therefore, when repairing the high voltage pe-
ripheral circuit, use the designated parts and
make sure not modify the circuit.
Repairing except indicates causes rising of high
voltage, and it emits an X-ray from the cathode-
ray tube.
Please include the following informations when you order parts. (Particularly the VERSION LETTER.)
1. MODEL NUMBER and VERSION LETTER
The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be
found at the end of the SERIAL NUMBER.
2. PART NO. and DESCRIPTION
You can find it in your SERVICE MANUAL.
HOWTO ORDER PARTS
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
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
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.
A1-1
!
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

CONTENTS
SERVICING NOTICES ON CHECKING ...................................................................................................
HOW TO ORDER PARTS ........................................................................................................................
IMPORTANT ............................................................................................................................................
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/AUDIO ..........................................................................................................................
MAIN/CRT ......................................................................................................................................
SCHEMATIC DIAGRAMS
MICON/TUNER ..............................................................................................................................
CHROMA........................................................................................................................................
DEFLECTION/CRT.........................................................................................................................
POWER ..........................................................................................................................................
SOUND...........................................................................................................................................
JACK/SOUND ................................................................................................................................
WAVEFORMS..........................................................................................................................................
MECHANICAL EXPLODED VIEW ...........................................................................................................
MECHANICAL REPLACEMENT PARTS LIST ........................................................................................
ELECTRICAL REPLACEMENT PARTS LIST...........................................................................................
A2-1
A1-1
A1-1
A1-1
A2-1
A3-1~A3-4
B1-1
B2-1, B2-2
C-1
C-1
C-2
D-1~D-5
E-1, E-2
F-1~F-2
F-3, F-4
G-1, G-2
G-3, G-4
G-5, G-6
G-7, G-8
G-9, G-10
G-11, G-12
H-1, H-2
I-1
J1-1
J2-1, J2-2

GENERAL SPECIFICATIONS
G-1 TV CRT CRT Size / Visual Size 20 inch / 480.0mmV
System CRT Type Normal
Deflection 90 degree
Magnetic Field BV/BH +0.45G/0.18G
Color System NTSC
Speaker 2Speaker
Position Front
Size 2 x 4.7 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 90 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
+5
o
C ~ +40
o
C
Storage
-20
o
C ~ +60
o
C
G-6 Operating Humidity Less then 80% RH
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/CATV Yes
Auto CH Memory Yes
Add/ Delete Yes
Language Yes
V-chip No
CH Label No
Favorite CH No
Color Stream DVD/DTV No
Control Level Yes
Volume Yes
Brightness Yes
A3-1

GENERAL SPECIFICATIONS
Contrast Yes
Color Yes
Tint (NTSC Only) Yes
Sharpness Yes
Tuning No
Bass No
Treble No
Balance No
Back Light No
Stereo,Audio Output,SAP Yes
Video Yes
Color Stream No
Channel(TV/Cable) Yes
CH Label No
Sleep Timer Yes
Sound Mute Yes
V-chip Rating No
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
G-10 Remote Unit RC-DW
Control
Glow in Dark Remocon
No
Format NEC
Custom Code 86-05 h
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys 28 Keys
Keys Power Yes
1Yes
2Yes
3Yes
4Yes
5Yes
6Yes
7Yes
8Yes
9Yes
0Yes
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) Yes
Set + Yes
Set - Yes
Multi Brand Keys CH Up(VCR) No
CH Down(VCR) No
Pause/Still No
A3-2

GENERAL SPECIFICATIONS
TV/VCR(VCR) No
Code No
FF No
Rew No
Rec No
Play No
Stop No
TV No
VCR No
Cable No
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 No
Type -
BBE No
Auto Search No
CH Allocation No
SAP Yes
Tone Control 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
Stable Sound No
Energy Star No
Favorite CH No
G-12 Accessories Owner's Manual Language English / 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 Yes
Important Safeguard
No
Dew/AHC Caution Sheet
No
AC Plug Adapter
No
Quick Set-up Sheet
No
Battery
No
UM size x pcs
OEM Brand
No
AC Cord
No
AV Cord (2Pin-1Pin)
No
A3-3

GENERAL SPECIFICATIONS
Registration Card
No
PTB Sheet
No
300 ohm to 75 ohm Antenna Adapter
No
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 No
Stand-by No
On Timer No
Terminals Front Video Input RCA
Audio Input RCA x 2
Other Terminal No
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) 590 x 492 x 447
G-15 Weight Net (Approx.) 21.0kg
( 46.3 lbs)
Gross (Approx.) 23.8kg
( 52.5lbs)
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 /White
Dimensions W x D x H(mm) 658 x 575 x 529
Design As per Buyer's
Description of Origin
No
Drop Test Natural Dropping At 1 Corner / 3 Edges /
6 Surfaces
Height (cm) 46
Container Stuffing 288
Sets/40' container
G-17 Cabinet Material Cabinet Front PS 94V0 DECABROM
Cabinet Rear PS 94V0 DECABROM
A3-4

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.
GND on the CRT
Screwdriver
Alligator Clip
Support CRT
GND on the CRT
Rubber Cap
CRT Support 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
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.)
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
DISASSEMBLY INSTRUCTIONS
Fig. 1-3
Fig. 1-4
Fig. 1-5
*
*
Fig. 1-1
B1-1

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.
Absorb the solder left on the pattern using the Braided
Shield Wire. (Refer to Fig. 2-4.)
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.
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 clock
setting, the channel setting, the POWER ON total hours, and PLAY/REC
total hours.
C-1
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.
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.
INIT 00 83
0010
CRT ON
ADDRESS DATA
FIG. 1
Initial setting content of MEMORY IC.
POWER ON total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)

C-2
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.
+2
INI +0 +1 +3 +4 +A
+9
+5 +6 +7 +8 +F +B +C +D +E
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 SET + or - keys on the remote, step through the ADDRESS until
required ADDRESS to be changed is reached.
Press ENTER to select DATA. When DATA is selected, it will "blink".
Again, step through the DATA using SET + or - until required DATA value has been selected.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
Repeat steps 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.
00 1B A408 60 89 02 B3 24 39 82 C0 03 04 4C 42 A5
20 7C 826D 70 75 79 7D 7E 7F 80 81 84 87 89 8B 90
40 D0 E8C3 C6 C8 CC D4 D8 DC E0 E4 EC F0 F4 F8 FF
10 39 5500 10 20 30 40 49 4C 51 53 57 5A 60 64 68
30 A2 AF94 98 9B 9F A4 A6 A8 AA AD B0 B4 B8 BC C0

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 When you exchange IC and Transistor for a heat sink,
apply the silicon grease (YG6260M) on the contract
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
2-1: RF AGC
D-1
Place the set with Aging Test for more than 15 minutes.
Receive an 63dB monoscope pattern.
Connect the digital voltmeter to the W062.
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 2.5 ± 0.05V.
1.
2.
3.
4.
5.
BEFORE MAKING ELECTRICAL
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.
1. Synchro Scope
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
VIF VCO
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
02
03
04
05
06
07
08
09
10
11
12
13
14
15 Fig. 1-2
FUNCTION
CONTRAST CENT
CONTRAST MAX
CONTRAST MIN
COLOR CENT
COLOR MAX
COLOR MIN
TINT
SHARPNESS
FM LEVEL
LEVEL
SEPARATION 1
SEPARATION 2
TEST MONO
TEST STEREO
X-RAY TEST
NO.
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
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.
2-4: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
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 (10) 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 "R.DRIVE", "B.DRIVE", "G.BIAS" or "B.BIAS".
Using the VOL. UP/DOWN button on the remote control,
adjust the R.DRIVE, B.DRIVE, G.BIAS or B.BIAS.
Perform the above adjustments 6 and 7 until the white
color is looked like a white.
1.
2.
3.
4.
5.
6.
7.
8.
2-5: VIF VCO
Place the set with Aging Test for more than 15 minutes.
Receive an 80dB monoscope pattern.
Connect the digital voltmeter between the pin 5 of
CP601 and the GND.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select "V.VCO".
Press the VOL. UP/DOWN button on the remote
control until the digital voltmeter is 2.5V.
1.
2.
3.
4.
5.

D-2
ELECTRICAL ADJUSTMENTS
2-6: SUB TINT/SUB COLOR
1.
2.
3.
4.
5.
6.
7.
8.
9.
Receive the color bar pattern.
Connect the oscilloscope to TP024.
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% of the white
level. (Refer to Fig. 2-2)
Receive the color bar pattern. (Audio Video Input)
Press the TV/AV 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
"A"
2-7: HORIZONTAL PHASE
1.
2.
3.
4.
Receive the monoscope pattern.
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 (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.
2-9: VERTICAL SHIFT
1.
2.
3.
Receive the monoscope pattern.
Using the remote control, set the brightness and
contrast to normal position.
Press the VOL. UP/DOWN button on the remote
control until the horizontal line becomes fit to the notch
of the shadow mask.
2-10: 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 15
Fig. 2-3
2-8: VERTICAL SIZE
1.
2.
3.
4.
5.
Receive the monoscope pattern.
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 (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%.
Receive a broadcast and check if the picture is normal.
NOTE: Adjust after performing adjustments in section 2-8.
1.
2.
3.
4.
5.
2-11: CONSTANT VOLTAGE
Place the set with Aging Test for more than 15 minutes.
Connect the digital voltmeter to the TP402.
Set condition is AV MODE without signal.
Using the remote control, set the brightness and
contrast to normal position.
Adjust the digital voltmeter is 130 ± 1V.

D-3
ELECTRICAL ADJUSTMENTS
2-14: LEVEL
1.
2.
3.
4.
Receive a 80dB monoscope pattern.
Connect the AC voltmeter to the pin 6 of CP601.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (25) on the remote control to
select "LEVEL".
Press the VOL. UP/DOWN button on the remote
control until the AC voltmeter is 100mV.
2-12: SEPARATION 1, 2
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 pin 6 and pin 7 of CP601.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (26) 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 (1)
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 pin 6 and pin 7 of CP601
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 (26) 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 pin 6 and pin 7 of CP601
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (27) 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.
Method (2)
Please do the method (1) or method (2) adjustment.
2-13: FM LEVEL
1.
2.
3.
4.
Receive a 80dB monoscope pattern.
Connect the AC voltmeter to the pin 14 of IC901 or W508.
Activate the adjustment mode display of Fig. 1-1 and press
the channel button (24) on the remote control to select "FM
LEVEL".
Press the VOL. UP/DOWN button on the remote control
until the AC voltmeter is 75 ± 5mV.

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

D-5
4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION)
ELECTRICAL ADJUSTMENTS
IC901
TU001
CP401_1
TP402
CP802A
CP701B
T501
W027
CP601_1
FB401
S501B
S501A
CP701A
TP022
TP024
CP806
J801
CP801
CD801
CRT
R805
J702
R803
AV PCB
CRT PCB
SYSCON PCB
CRT
CP1001
SPEAKER
W062

REMOCON
21
22
23
15
14
32
59
64
63
CF601
SAW FILTER
19
CHROMA IC
IC601 M61206FP
PUMP UP
AMP
+
-
52
3
V-OUT IC
IC401
AN5522
Q801
RED OUT
Q803
GREEN OUT
Q802
BLUE OUT
CRT
V801
11 6 8
RGB
Heater F7
34
RED R 35
GREEN G
36
BLUE B
26CVIN
MICON IC
IC101 OEC7072A
X-RAY
TEST SW.
Q403
11
AUDIO MUTE
10
X-RAY_TEST
9
OS101
1
X-RAY TEST
SW
Q404
42
6
E-1 E-2
POWER
VOL UP
KEY1
6
CH UP
VOL DOWN
CH DOWN
KEY2
7
AC IN
F501
8
5
T501
VR502
+B ADJ.
L503 DEGAUSS COIL
TH501
MEMORY IC
IC199
S-24C04BDP-LA
SCL 1
30
SDA 1
31
BLOCK DIAGRAM
7
1VCC
Q402
H. DRIVE
Q401
H. OUTPUT
6
5
SCL
SDA
X-RAY
POWER
29
8
2EXT MUTE
51 AUDIO OUT
VIF IN(1)
G IN
B IN
R IN
RF AGC OUT
POWER ON CONT
H OUT
VIF Vcc
VIF IN(2)
20
SCL
26 SDA
27
INV FBP OUT
10
V PULSE OUT
5V OUT
28
FPB IN
12
14
STEREO+5V
REG
Q605
REG
Q608
REG
Q604
X602
3.579545MHz
31
11
49
8.7V REG OUT
P.CON 5.7V REG
AT5.7V REG OUT
Y SW OUT
R OUT
G OUT
47
RECTIFIER
16
B OUT
Q606
REG
5V REG
Q603
AT+5V
FEED BACK
SW.
Q507
BUFFER
Q502
SWITCHING
Q501 FB401
10
HV
F
S
FBT
9
1
5
3
2
IC501
LTV-817M-VB
FEED BACK
TUNER+5V
MUTE SW
Q1001
DEFLECTION SIGNAL
B. SIGNAL
R. SIGNAL
G. SIGNAL
AUDIO SIGNAL
TUNER VIDEO SIGNAL
38
EXT C in
44
HI VCC
34
X' TAL
IC1001 AN7522
SOUND
AMP IC
8
9
6
AGCIF
TU001
11 1
38
H. SYNC
37
V. SYNC
1
DY
SP1002
4
2
10
12 SP1001
SOUND DECORDER IC
IC901 AN5829S
18 19
23
22 21 24
14
FRONT_A/V_IN
(STEREO)
J702
46
2

TU001
D405
L406
R422
CP401_1
R418
R407
R446
C439
R421
R445
VR502
Q507
B504
C521
D510
R410
SW105 SW103
IC401
C506
C533
L501
W006
R411
R428
C448
R424
C433
TP402
V.POSI
CP802A
W008
W009
Q403
R001
Q404
R420
C427
R436
HS501
W012
W014
C511
C531
D520
R554
D512
D506
R542
HS401
D528
C443_1
W827
R517
R1010
HS1001
C1006
R1002
Q1001
W828
C1009
CP1001
C1001
C1003
D404
W024
C912
C917
C914
C916
D515
D413
R417
W028
W030
C915
C907
C911
C904
C905
W036
W040
R626
R110
C645
CF601_1
C118
R630
R631
R627
D613
D615
D616
C603
W043
R614
D611
D610
C612
R139
Q609
R608
Q603
C625
W048
D601
C624
Q605
Q604
C604
C629
C605
C628
C601
C621
C115
C120
C122
L101
X602
IC199
W049
R140
W055
W056
W057
W061
R638
R641
W066
C647
W072
W073
W074
W075
W080
C414
C418_1
C446_1
CP701B
IC1001
W839
W082
W083
R1001
W084
W085
C137
C129
W090
W091
W093
W094
W096
W844
D411
W857
CP802B
CP801
J702
R803
R805
R807
W001
W002
TP022 C809
C630
C613
C128
C635
C619_1
CF603
L607
CP701A
W103
W801
W109
W110
Q402_1
T401_1
J801
TP024 TP023
C435
W108
W843 R806_1
R804
R802_1
C124
R635
R514
R419
W811
D507
W079
W037
T501
W814
W106
C504 D518
D514
D509
D505
R427
W027
C620
W058
W111
Q607
R613
W112
C921
C919
Q608
Q801 Q802 Q803
C002
C003
C004
C416
C417
C430
C440
C501_1
C632
C638
C903
C910
D001
D407
D605
IC501
Q401
R408
R409
R429
R629
C437
D403
W033
W065
D410
Q501
W858
W860
W861 W862
R107
W113
R640
W078
CP601_1
W115
W060
R503
Q502
C512
R507
C507_1
D521
C514_1
B501
R509
C509
R502
D511
W095
W100
W088
W120
W021
W121
W104
W031
W035
C611_1
C637_1
W102
R111
R616
Q405
R404
C125
W810
D503
D502
D501
D504
CP502
TH501
C530
R500
R904
C913
W070
C646
W046
W047
W119
R617
R504
C518_1
F501
C505
FH502
S501B
S501A
FH501
W114
C126
R543
R506
W050
W042
W819
R553_1
C1002
B502
C653
C802_1
C502
C503
D612
C639
C607
R621
C412
C403
R405
Q606
W830
W829
R632
W123
W122
C627
D602
CF604
C626
R623
W116
R606
B503
W863
C434
CP503
W081
R501
C520
W062
SW101
SW102
SW104
OS101
C123
FB401
W817
W818
W816
W802
D408
W840
R624
W823
W807
W842
CD501
C702
C701
R448_1
C401_1
R450_2
R905
R909
R114
R712
R430_1
R425
C560_2
S801X
S801Y
CP806
D606
R651
C517_2
C444_2
R416
W826
W087
PRINTED CIRCUIT BOARDS
MAIN/CRT/AUDIO (INSERTED PARTS)
SOLDER SIDE
F-1 F-2
RISKOFFIRE -REPLACEASMARKED.

17
33
49
1
R607
R734
R733
R101
R126
R128
C513
R532 R533
R437
C561
R534
R1008 C1004
R1006
IC901
R903
R605
R619
R625
R642
R646
C616
R633
C622
R628
R611
C655
C623_1
C602
R615
R622
R609
C618_1
C606
R601
R134
C138
C121
R130
R106
R105
R120
R104
R103
R102
R124
R125
C114
C113
R112
IC601
R115
R113
R602
IC101
R117 R116
R119
R131
C801
R814
R811
R816
R813
C810
R809
C811
R141
R142
R907
R815
R108
C103
C104
C609
R109
C634
R639
R123
R122
R403
R129
R121
C108 C107
R908
R118
R1005
C140
C909
C906
PRINTED CIRCUIT BOARDS
MAIN/CRT (CHIP MOUNTED PARTS)
SOLDER SIDE
F-3 F-4