As for the places which need special attentions,
they are indicated with the labels or seals on the
cabinet, chassis and parts. Make sure to keep the
indications and notices in the operation manual.
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
3. USE THE DESIGNATED PARTS
The parts in this equipment have the specific
characters of incombustibility and withstand
voltage for safety. Therefore, the part which is
replaced should be used the part which has
the same character.
Especially as to the important parts for safety
which is indicated in the circuit diagram or the
table of parts as a mark, the designated
parts must be used.
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.
5. TAKE CARE TO DEAL WITH THE
CATHODE-RAY TUBE
In the condition that an explosion-proof cathoderay 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.
6. AVOID AN X-RAY1. KEEP THE NOTICES
Safety is secured against an X-ray by considering about the cathode-ray tube and the high
voltage peripheral circuit, etc.
Therefore, when repairing the high voltage peripheral 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 cathoderay tube.
PERFORM A SAFETY CHECK AFTER
7.
SERVICING
Confirm that the screws, parts and wiring which
were removed in order to service are put in the
original positions, or whether there are the
portions which are deteriorated around the
serviced places serviced or not. Check the
insulation between the antenna terminal or
external metal and the AC cord plug blades.
And be sure the safety of that.
(INSULATION CHECK PROCEDURE)
1.
Unplug the plug from the AC outlet.
2.
Remove the antenna terminal on TV and turn
on the TV.
3.
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].
4.
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
HOW TO ORDER PARTS
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.
IMPORTANT
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.
A1-1
CONTENTS
SERVICING NOTICES ON CHECKING......................................................................................................
HOW TO ORDER PARTS ...........................................................................................................................
POWER ..................................................................................................................................................
CH AllocationYes
LanguageYes
Clock SetNo
On Timer SetYes
Off Timer SetYes
Pin Code RegistrationNo
Panel LockYes
Nicam Auto OffNo
AV Color SystemYes
Sound SystemNo
Auto 4:3 DefaultNo
AV2 OutputNo
Output SourceNo
SourceNo
Control LevelYes
VolumeYes
BrightnessYes
ContrastYes
ColorYes
Tint (NTSC Only)Yes
SharpnessYes
TuningYes
BassNo
TrebleNo
BalanceNo
Back LightNo
Nicam STNo
Tone 1/2 (A/B)No
Surround On/OffNo
Pin Code No
AVYes
SkipYes
ChannelYes
Hotel LockNo
Sleep TimerNo
Selectable PictureYes
Wide ModeNo
Sound MuteYes
G-8OSD LanguageEnglish French Spanish
Germany Italian
Polski Sweden
Netherlands Portugal
Denmark Russian
Czech Slovak Hungarian
A3-2
GENERAL SPECIFICATIONS
G-9Clock and Sleep TimerMax Time- Min
Timer Step
ClockNo
On TimerProgram( On Timer)Yes
Off TimerProgram( Off Timer)Yes
Wake Up TimerNo
Timer Back-up (at Power Off Mode) more than -- Min Sec
G-10RemoteUnitRC-EY
ControlGlow in Dark RemoconNo
FormatNEC
Custom Code
Power SourceVoltage(D.C)3V
UM size x pcsUM-4 x 2 pcs
Total Keys
KeysPower Yes
1Yes
2Yes
3Yes
4Yes
5Yes
6Yes
7Yes
8Yes
9Yes
0 Yes
Volume Up / +Yes
Volume Down / -Yes
PreviousYes
Select PictureYes
MenuYes
OK(Enter)Yes
EXITNo
Audio SelectNo
Sleep TimerNo
MuteYes
T'TEXT KeysTEXT / MIX / TVYes
CH Up / Page UpYes
CH Down / Page DownYes
RedYes
GreenYes
YellowYes
CyanYes
TEXT F/T/BYes
Reveal Yes
TIMED PAGE(SUB PAGE)Yes
CALL / TEXT INDEXYes
INPUT SELECT Yes
TEXT HOLD Yes
TIME / TXCLYes
- Min
40-BF h
32 Keys
A3-3
GENERAL SPECIFICATIONS
G-11FeaturesAuto DegaussYes
Auto Shut OffYes
Canal+No
CATVNo
Anti-theft(Back Up 30 Min.)No
Memory(Last CH)Yes
Memory(Last Volume)Yes
BBENo
Auto SearchYes
CH AllocationYes
Just Clock FunctionNo
Game PositionNo
CH LabelNo
VM CircuitNo
Full OSDNo
UnitextNo
FastextYes
Top TextYes
PremiereNo
Comb FilterNo
Lines
Auto CH MemoryNo
Stable SoundNo
Auto Set Up No
FBT Leak Test ProtectYes
Previous (Quick View)Yes
Panel LockYes
Power ON MemoryYes
Double Focus & Dynamic FocusNo
Wss Signal Wide ChangeNo
Virtual Dolby SurroundNo
Hotel LockNo
w/Guarantee Card
Remote Control UnitYes
Rod Antenna
Poles Pole
Terminal type
Loop Antenna
Terminal U/V Mixer
DC Car Cord (Center+)
Guarantee Card
Warning Sheet
Circuit Diagram
Antenna Change Plug
Service Facility List
Important SafeguardYes (Owner's Manual In)
Dew/AHC Caution Sheet
AC Plug Adapter
Quick Set-up SheetYes
BatteryYes
UM size x pcsUM-4 x 2 pcs
OEM BrandNo
AC Cord
AV Cord (2Pin-1Pin)
Registration Card
PTB Sheet
300 ohm to 75 ohm Antenna Adapter
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
A3-4
GENERAL SPECIFICATIONS
N
/
G-13InterfaceSwitchFrontPower (Tact Sw)No
System SelectNo
Main Power SWYes
Sub PowerNo
Channel UpYes
Channel DownYes
Volume UpYes
Volume DownYes
RearAC/DCNo
TV/CATV SelectorNo
DegaussNo
Main Power SWNo
IndicatorPowerNo
Stand-byNo
Stand-by/ONYes(Red)
On TimerYes(Green)
TerminalsFrontVideo Input
Audio Input
Other Terminal
RearVideo Input(Rear1)
Video Input(Rear2)
Audio Input(Rear1)
Audio Input(Rear2)
Video Output
Audio Output
Euro Scart(21Pin)No
S-INPUT
Euro Scart(21Pin)Yes ( x1 )
RGB-INPUTYes ( x1 )
Component Input
DiversityNo
Ext SpeakerNo
DC Jack 12V(Center +)No
VHF/UHF Antenna Input
AC OutletNo
G-14Set SizeApprox. W x D x H (mm)
G-15WeightNet (Approx.)
Gross (Approx.)
G-16CartonMaster Carton
Content
Material
Dimensions W x D x H(mm)
Description of Origin
Gift BoxYes
MaterialDouble/Brown
Dimensions W x D x H(mm)
DesignAs per Buyer's
Description of OriginYes
Drop Test
Height (cm)46
Container Stuffing
G-17MaterialCabinetCabinet FrontPS 94 HB
Cabinet RearPS 94 HB
HolderPS 94V0 NON-DECABROM
PCBNon-Halogen DemandYes
Eyelet DemandYes
RCA
RCA
Head Phone (Stereo)
No
No
No
No
No
No
No
D Type
506.6 x 484 x 464.5
21.0 kg
23.8kg
----
-- x -- x --
---
580 x 575 x 555
atural Dropping At 1 Corner / 3 Edges
320
--
( --- lbs)
( ---lbs)
No
Sets
/--
Sets/40' container
6 Surfaces
A3-5
DISASSEMBLY INSTRUCTIONS
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.
GND on the CRT
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.)
Screwdriver
Alligator Clip
GND on the CRT
Flip up the sides of the Rubber Cap in the direction of the
2.
arrow and remove one side of the support.
(Refer to Fig. 1-2.)
Rubber Cap
CRT
Support
Support
CRT
Fig. 1-1
Fig. 1-2
Fig. 1-4
4. Insert one end of the Anode Support into the anode button,
then the other as shown in Fig. 1-5.
Support
CRT
5.6.Confirm that the Support is securely connected.
Put on the Rubber Cap without moving any parts.
Fig. 1-5
B1-1
DISASSEMBLY INSTRUCTIONS
2.
REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
REMOVAL
Put the Masking Tape (cotton tape) around the Flat
1.
Package IC to protect other parts from any damage.
(Refer to Fig. 2-1.)
NOTE
Masking is carried out on all the parts located within
10 mm distance from IC leads.
When IC starts moving back and forth easily after
3.
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.)
NOTE
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.
Blower type IC
desoldering
machine
Masking Tape
(Cotton Tape)
Heat the IC leads using a blower type IC desoldering
2.
IC
machine. (Refer to 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.
Blower type IC
desoldering machine
Fig. 2-1
Tweezers
IC
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
5.
Shield Wire. (Refer to Fig. 2-4.)
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Fig. 2-3
Braided Shield Wire
Soldering Iron
IC
Fig. 2-2
IC pattern
Fig. 2-4
B2-1
DISASSEMBLY INSTRUCTIONS
INSTALLATION
Take care of the polarity of new IC and then install the
1.
new IC fitting on the printed circuit pattern. Then solder
each lead on the diagonal positions of IC temporarily.
(Refer to Fig. 2-5.)
Soldering Iron
Solder temporarily
Supply the solder from the upper position of IC leads
2.
Solder temporarily
sliding to the lower position of the IC leads.
(Refer to Fig. 2-6.)
Fig. 2-5
When bridge-soldering between terminals and/or the
4.
soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 2-8.)
Thin-tip Soldering Iron
IC
Fig. 2-8
Finally, confirm the soldering status on four sides of the
5.
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.
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.
Soldering IronSolder
IC
Absorb the solder left on the lead using the Braided
3.
Supply soldering
from upper position
to lower position
Shield Wire. (Refer to Fig. 2-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
IC
Braided Shield Wire
Fig. 2-6
Fig. 2-7
B2-2
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 2 seconds.
Set Key
VOL. (-) MIN0
VOL. (-) MIN
VOL. (-) MIN
VOL. (-) MIN8
VOL. (-) MIN
Remocon Key
Reset the user setting items (PICTURE, VOLUME, LANGUAGE and NICAM AUTO/
OFF) to the initial state for delivery.
Initialization of the factory.
1
6
9
NOTE:
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".
Writing of EEPROM initial data.
NOTE: Do not use this for the normal servicing.
Display of the Adjustment MENU on the screen.
Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).
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.
Operations
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.
Set the VOLUME to minimum.
2.
Press both VOL. DOWN button on the set and Channel
button (6) on the remote control for more than 2 seconds.
3.
After the confirmation of using hours, turn off the power.
ADDRESS DATA
INIT 01 00
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.
Note: No need setting due to the adjustment value except the list below.
INI
+0+1+2+3+4+5+6+7+8+9+A+B+C+D+E+F
---
00
10
1.2.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 2 seconds.
ADDRESS and DATA should appear as FIG 1.
3.
ADDRESS is now selected and should "blink". Using the VOL. +/- button on the remote, step through the ADDRESS until
required ADDRESS to be changed is reached.
4.
Press OK to select DATA. When DATA is selected, it will "blink".
5.
Again, step through the DATA using VOL. +/- button until required DATA value has been selected.
6.
Pressing OK will take you back to ADDRESS for further selection if necessary.
7.
Repeat steps 3 to 6 until all data has been checked.
8.
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.
9.
Turn POWER on.
10.
Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
11.
After the finishing of the initializing of shipping, the unit will turn off automatically.
003823176180480003730D0300------
10808080000674
---------------------------
Table 1
ADDRESS DATA
INIT 03 00
CRT ON 0010
Fig. 1
The unit will now have the correct DATA for the new MEMORY IC.
C-2
ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURE
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
CAUTION
•
Use an isolation transformer when performing any
service on this chassis.
•
Before removing the anode cap, discharge electricity
because it contains high voltage.
•
When removing a PCB or related component, after
unfastening or changing a wire, be sure to put the wire
back in its original position.
•
When you exchange IC and Transistor for a heat sink,
apply the silicon grease on the contact section of the
heat sink. Before applying new silicon grease, remove all
the old silicon grease. (Old grease may cause damages
to the IC and Transistor).
Prepare the following measurement tools for electrical
adjustments.
1. Oscilloscope
2. Digital Voltmeter
3. Pattern Generator
On-Screen Display Adjustment
1. In the condition of NO indication on the screen.
Press the VOL. DOWN button on the set and the
Channel button (9) on the remote control for more than
2 seconds to appear the adjustment mode on the
screen as shown in Fig. 1-1.
35 H POSI OSD
36 V POSI OSD
37 H POSI TEXT
38 V POSI TEXT
39 H POSI 60
00 CUT OFF
9- EXT
2.3.Use the Channel button (0-9) or Channel UP/DOWN
button on the remote control to select the options
shown in Fig. 1-2.
Press the MENU button on the remote control to end
the adjustments.
FUNCTION
NO.
CUT OFF
00
RF AGC
01
AGC GAIN
02
R DRIVE
03
R CUTOFF
04
G DRIVE
05
G CUTOFF
06
B DRIVE
07
H POSI (50)
08
V POSI (50)
09
V POSI (60)
10
V SIZE (50)
11
V SIZE (60)
12
VCO COARSE
13
VCO FINE
14
VCO COARSE L1
15
VCO FINE L1
16
BRIGHT CENT
17
BRIGHT MAX
18
BRIGHT MIN
19
117
117
57
57
45
VCO Status MMM
NO.
FUNCTION
20
TINT
21
SHARP
22
CONTRAST CENT
23
CONTRAST MAX
24
CONTRAST MIN
25
COLOR CENT
26
COLOR MAX
27
COLOR MIN
28
M R CUT OFF
29
M G CUT OFF
30
M B CUT OFF
31
CVBS OUT
32
APR THRESHOLD
33
BELL FILTER
34
BANDPASS
35
H POSI OSD
36
V POSI OSD
37
H POSI TEXT
38
V POSI TEXT
39
H POSI (60)
Fig. 1-1
Fig. 1-2
2. BASIC ADJUSTMENTS
2-1: CONSTANT VOLTAGE
Place the set with Aging Test for more than 5 minutes.
1.
Connect the digital voltmeter to TP501.
2.
Set condition is AV MODE without signal.
3.
Adjust the VR501 until the DC voltage is 117 ± 0.5V.
4.
2-2: VCO COASE, VCO FINE
1.
Place the set with Aging Test for more than 10 minutes.
2.
Connect the oscillator (38.9MHz) to TP001.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (13) on the remote control to
select "VCO COARSE".
4.
Press the VOL. +/- button on the remote control until
the "OK" appear on the screen. If the "OK" is not
displayed, select the "+" side on the changed from "+"
to "-".
5.
Press the Page UP button once to set to "VCO FINE"
mode.
6.
Press the VOL. +/- button on the remote control to
select the 5 step down point from the upper limit on the
"OK".
(Example: In case of the "OK" range 30~41, select 36.)
2-3: VCO COASE L1, VCO FINE L1
1.
Place the set with Aging Test for more than 10 minutes.
2.
Connect the oscillator (33.95MHz) to TP001.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (15) on the remote control to
select "VCO COARSE L1".
4.
Press the VOL. +/- button on the remote control until
the "OK" appear on the screen. If the "OK" is not
displayed, select the "+" side on the changed from "+"
to "-".
5.
Press the Page UP button once to set to "VCO FINE
L1" mode.
6.
Press the VOL. +/- button on the remote control to
select the 5 step down point from the upper limit on the
"OK".
(Example: In case of the "OK" point 30~41, select 36.)
2-4: AGC VOLTAGE
1.
Place the set with Aging Test for more than 15 minutes.
2.
Receive the UHF (63dB).
3.
Connect the digital voltmeter to pin 5 of CP101.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (01) on the remote control to
select "RF AGC".
5.
Press the VOL. +/- button on the remote control until the
digital voltmeter is 2.80 ± 0.05V.
2-5: CUT OFF
1.
Set condition is AV MODE without signal.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Place the set with Aging Test for more than 15 minutes.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (00) on the remote control to
select "CUT OFF".
5.
Adjust the Screen Volume until a dim raster is obtained.
D-1
ELECTRICAL ADJUSTMENTS
2-6: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1.
Place the set with Aging Test for more than 15 minutes.
2.
Receive the gray scale pattern from the Pattern
Generator.
3.
Using the remote control, set the brightness and
contrast to normal position.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select "R DRIVE".
5.
Press the Page UP/DOWN button on the remote control
to select the "R DRIVE", "G DRIVE", "M R CUTOFF" or
"M G CUTOFF".
6.
Adjust the VOL. +/- button on the remote control to
whiten the R DRIVE, G DRIVE, M R CUT OFF, and M G
CUT OFF at each step tone sections equally.
7.
Perform the above adjustments 5 and 6 until the white
color is looked like a white.
2-7: FOCUS
Receive an 70dB monoscope pattern.
1.
Turn the Focus Volume fully counterclockwise once.
2.
Adjust the Focus Volume until picture is distinct.
3.
2-8: HORIZONTAL POSITION
1.
Receive the monoscope pattern from the Pattern
Generator.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (08) on the remote control to
select "H POSI (50)".
4.
Press the VOL. +/- button on the remote control until
the SHIFT quantity of the OVER SCAN on right and left
becomes minimum.
5.
Receive the monoscope pattern of NTSC. (Audio Video
Input)
6.
Using the remote control, set the brightness and
contrast to normal position.
7.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (39) on the remote control to
select "H POSI (60)".
8.
Press the VOL. +/- button on the remote control until
the SHIFT quantity of the OVER SCAN on right and left
becomes minimum.
2-9: VERTICAL POSITION, VERTICAL LINEARITY
1.
Receive the monoscope pattern from the pattern
Generator.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Adjust the VR401 until the horizontal line becomes fit to
the notch of the shadow mask.
4.
Adjust the VR420 until the SHIFT quantity of the OVER
SCAN on upside and downside becomes minimum.
2-10: VERTICAL SIZE
Receive the monoscope pattern from the Pattern
1.
Generator.
Using the remote control, set the brightness and
2.
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
3.
press the channel button (11) on the remote control to
select "V SIZE (50)".
Press the the VOL. +/- button on the remote control until
4.
the SHIFT quantity of the OVER SCAN on upside and
downside becomes 8 ± 2%.
Receive a broadcast and check if the picture is normal.
5.
Receive the monoscope pattern of NTSC. (Audio Video
6.
Input)
Using the remote control, set the brightness and
7.
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
8.
press the channel button (12) on the remote control to
select "V SIZE (60)".
Press the the VOL. +/- button on the remote control until
9.
the SHIFT quantity of the OVER SCAN on upside and
downside becomes 10 ± 2%.
Receive a broadcast and check if the picture is normal.
10.
2-11: BRIGHT CENT
1.
Receive the PAL black pattern*. (RF Input)
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Place the set with Aging Test for more than 15 minutes.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "BRIGHT CENT".
5.
Press the VOL. +/- button on the remote control until
the screen begin to shine.
6
Receive the PAL black pattern*. (Audio Video Input)
7.
Set to the AV mode. Then perform the above
adjustments 2~5.
*The Black Pattern means the whole black raster signal.
Select the "RASTER" of the pattern generator, set to
the OFF position for each R, G and B.
2-12: CONTRAST CENT
1.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (22) on the remote control to
select "CONTRAST CENT".
2.
Press the VOL. +/- button on the remote control until
the contrast step No. becomes "35".
3.
Receive a broadcast and check if the picture is normal.
4.
Set to the AV mode. Then perform the above
adjustments 1~3.
D-2
ELECTRICAL ADJUSTMENTS
2-13: COLOR CENT
1.
Receive the PAL color bar pattern. (RF Input)
2.
Using the remote control, set the brightness, contrast
and color to normal position.
3.
Connect the oscilloscope to TP801.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (25) on the remote control to
select "COLOR CENT".
5.
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.
6.
Press the VOL. +/- button on the remote control until
the red color level is adjusted to 90 ± 10% of the white
level. (Refer to Fig. 2-1)
7.
Receive the PAL color bar pattern. (Audio Video Input)
8.
Set to the AV mode. Then perform the above
adjustments 2~6.
90%
100%
White 100%
Red Level
Fig. 2-1
2-15: Confirmation of Fixed Value (Step No.)
Please check if the fixed values of the each adjustment
items are set correctly referring below.
NO.
FUNCTION
02
AGC GAIN
04
R CUTOFF
06
G CUTOFF
07
B DRIVE
09
V POSI (50)
10
V POSI (60)
18
BRIGHT MAX
19
BRIGHT MIN
20
TINT
21
SHARP
23
CONTRAST MAX
24
CONTRAST MIN
26
COLOR MAX
27
COLOR MIN
30
M B CUT OFF
31
CVBS OUT
32
APR THRESHOLD
33
BELL FILTER
34
BANDPASS
35
H POSI OSD
36
V POSI OSD
37
H POSI TEXT
38
V POSI TEXT
*To check for the fixed values of the RF (60Hz), indicate
the adjustment mode screen while input the 60Hz video
signal.
RF
00
00
00
45
05
00
25
16
30
04
50
10
50
10
127
31
00
10
00
120
57
119
57
AV
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---
---
---
---
--25
16
ADJ.
04
50
10
50
10
---
---
---
---
---
---
---
---
---
2-14: TINT
1.
Receive the NTSC color bar pattern. (Audio Video Input)
2.
Using the remote control, set the brightness and contrast
to normal position.
3.
Connect the oscilloscope to TP803.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (20) on the remote control to
select "TINT".
5.
Press the VOL. +/- button on the remote control until the
section "A" becomes a straight line. (Refer to Fig. 2-2)
"A"
Fig. 2-2
D-3
ELECTRICAL ADJUSTMENTS
3.
PURITY AND CONVERGENCE
ADJUSTMENTS
NOTE
Turn the unit on and let it warm up for at least 30
1.
minutes before performing the following adjustments.
Place the CRT surface facing east or west to reduce the
2.
terrestrial magnetism.
Turn ON the unit and demagnetize with a Degauss Coil.
3.
3-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT)
Tighten the screw for the magnet. Refer to the adjusted
1.
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
2.
generator.
Slide the deflection yoke until it touches the funnel
3.
side of the CRT.
Adjust center of screen to green, with red and blue on the
4.
sides, using the pair of purity magnets.
Switch the color bar generator from the green raster
5.
pattern to the crosshatch pattern.
Combine red and blue of the 3 color crosshatch pattern
6.
on the center of the screen by adjusting the pair of
4 pole magnets.
Combine red/blue (magenta) and green by adjusting the
7.
pair of 6 pole magnets.
Adjust the crosshatch pattern to change to white
8.
by repeating steps 6 and 7.
3-2: PURITY
NOTE
Adjust after performing adjustments in section 3-1.
1.
Receive the green raster pattern from color bar
generator.
2.
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.
3.
Move the deflection yoke backward (to neck side)
slowly, and stop it at the position when the whole
screen is green.
4.
Confirm red and blue colors.
5.
Adjust the slant of the deflection yoke while watching the
screen, then tighten the fixing screw.