This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit and on the remote control
for more than a standard time (second).
Set Key
VOL. (-) MIN
VOL. (-) MIN1
VOL. (-) MIN4
VOL. (-) MIN6
VOL. (-) MIN8
VOL. (-) MIN9
Standard Time
(seconds)
0
1
1
1
1
1
Releasing of V-CHIP PASSWORD.1
Initialization of the factory on TV.
NOTE:
Initialization of the factory on DVD.
NOTE: Do not use this for the normal servicing.
POWER ON total hours are displayed on the screen.
Refer to the "PREVENTIVE CHECKS AND SERVICE INTERVALS"
(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.
The function will only work at the DVD stop mode.
OperationsRemocon Key
Tray cannot be opened.
STOP93
Refer to the “TRAY LOCK”.
NOTE:
No indications on the screen when the Tray Lock is setting.
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 1 second.
3.
After the confirmation of using hours, turn off the power.
ADDRESS DATA
INIT 00 06
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.
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.
3.
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.
4.
Press ENTER to select DATA. When DATA is selected, it will "blink".
5.
Again, step through the DATA using VOL. UP/DOWN button until required DATA value has been selected.
6.
Pressing ENTER 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.
50
Table 1
ADDRESS DATA
INIT 00 16
CRT ON 0010
FIG. 1
+A
+B+C+D+E+FINI
010049550F4700
520012000000
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 1 second.
11.
After the finishing of the initializing of shipping, the unit will turn off automatically.
The unit will now have the correct DATA for the new MEMORY IC.
C-2
ELECTRICAL ADJUSTMENTS
1.
BEFORE MAKING ELECTRICAL
ADJUSTMENTS
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. AC Voltmeter
4. Pattern Generator
5. Multi-Sound Signal Generator
NO.
FUNCTION
01
OSD H
02
OSD CONTRAST
03
CUT OFF
04
H POSITION
05
H BLK L
06
H BLK R
07
V SIZE
08
V POSITION
09
V LINEARITY
10
V S CORRECTION
11
V COMP
12
R CUT OFF
13
G CUT OFF
14
B CUT OFF
15
R DRIVE
16
G DRIVE
17
B DRIVE
18
BRIGHTNESS(CENT.)
19
BRIGHTNESS(MAX)
20
BRIGHTNESS(MIN)
21
CONTRAST(CENT.)
22
CONTRAST(MAX)
23
CONTRAST(MIN)
24
COLOR(CENT.)
25
COLOR(MAX)
26
COLOR(MIN)
27
TINT
28
SHARPNESS
29
SUB BIAS
30
BRI. AV(CENT.)
31
BRI. AV(MAX)
32
BRI. AV(MIN)
33
CONT. AV(CENT.)
34
CONT. AV(MAX)
35
CONT. AV(MIN)
FUNCTION
NO.
36
COL. AV(CENT.)
37
COL. AV(MAX)
38
COL. AV(MIN)
39
TINT AV
40
SHARPNESS AV
41
SUB BIAS
42
BRI. DVD(CENT.)
43
BRI. DVD(MAX)
44
BRI. DVD(MIN)
45
CONT. DVD(CENT.)
46
CONT. DVD(MAX)
47
CONT. DVD(MIN)
48
COL. DVD(CENT.)
49
COL. DVD(MAX)
50
COL. DVD(MIN)
51
TINT DVD
52
SHARPNESS DVD
53
SUB BIAS
54
BRI. GAME(CENT.)
55
BRI. GAME(MAX)
56
BRI. GAME(MIN)
57
CONT. GAME(CENT.)
58
CONT. GAME(MAX)
59
CONT. GAME(MIN)
60
SUB BIAS
61
TUNING V MUTE
62
POWER ON V MUTE
63
INPUT LEVEL
64
SEPARATION L
65
SEPARATION H
66
TEST PWM
67
X-RAY TEST
68
H STOP
69
H FREQ
Fig. 1-2
On-Screen Display Adjustment
Set the VOLUME to minimum.
1.
Press the VOL. DOWN button on the set and the Channel
2.
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.
Function
Step No.
01 OSD
13
Fig. 1-1
Use the Channel UP/DOWN button or Channel button (1-
3.
0) on the remote control to select the options shown in
Fig. 1-2.
Press the MENU button on the remote control to end the
4.
adjustments.
2. BASIC ADJUSTMENTS
2-1: CONSTANT VOLTAGE
1.
Set condition is AV MODE without signal.
2.
Using the remote control, set the brightness and contrast
to normal position.
3.
Connect the digital voltmeter to TP401.
4.
Adjust the VR3800 until the digital voltmeter is 135 ± 0.5V.
2-2: FOCUS
1.
Receive the monoscope pattern.
2.
Turn the Focus Volume fully counterclockwise once.
3.
Adjust the Focus Volume until picture is distinct.
2-3: CUT OFF
1.
Adjust the unit to the following settings.
R DRIVE=3F, G DRIVE=07, B DRIVE=3F, R CUT
OFF=7F, G CUT OFF=7F, B CUT OFF=7F
2.
Place the set with Aging Test for more than 15 minutes.
3.
Set condition is AV MODE without signal.
4.
Using the remote control, set the brightness and contrast
to normal position.
5.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select "CUT OFF".
6.
Adjust the Screen Volume until a dim raster is obtained.
D-1
ELECTRICAL ADJUSTMENTS
2-4: 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 (16) on the remote control to
select "G DRV".
5.
Press the CH. UP/DOWN button on the remote control to
select the "R CUT", "G CUT", "B CUT", "R DRV" or "B
DRV".
6.
Adjust the VOL. UP/DOWN button on the remote control
to whiten the R CUT, G CUT, B CUT, R DRV, and B DRV
at each step tone sections equally.
7.
Perform the above adjustments 5 and 6 until the white
color is looked like a white.
2-5: HORIZONTAL POSITION
1.
Receive the monoscope pattern.
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 (04) on the remote control to
select "HPOSI".
4.
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on right and
left becomes minimum.
2-6: VERTICAL POSITION
1.
Receive the monoscope pattern.
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 "VPOSI".
4.
Check if the step No. V POSI is "02".
5.
Adjust the VR401 until the horizontal line becomes fit
to notch of the shadow mask.
2-7: VERTICAL SIZE
1.
Receive the monoscope pattern.
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 (07) on the remote control to
select "VSIZE".
4.
Press the VOL. UP/DOWN button on the remote control
until the Up/Down OVER SCAN Quantity becomes equal
to the Right/Left OVER SCAN Quantity.
5.
Receive a broadcast and check if the picture is normal.
2-8: VERTICAL LINEARITY
NOTE:
1.
2.
3.
4.
2-9: SEPARATION
Please do the method (1) or method (2) adjustment.
Method (1)
1.
2.
3.
4.
5.
6.
7.
Method (2)
1.
2.
3.
4.
5.
6.
7.
8.
9.
Adjust after performing adjustments in section 2-7.
After the adjustment of Vertical Linearity, reconfirm
the Vertical Position and Vertical Size adjustments.
Receive the monoscope pattern.
Using the remote control, set the brightness and contrast
to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (09) on the remote control to
select "VLIN".
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on upside
and downside becomes minimum.
Set the multi-sound signal generator for each different Lch and R-ch frequency (Ex. L-ch=2KHz, R-ch=400Hz)
and receive the RF signal.
Connect the oscilloscope to the Audio Out Jack.
Press the AUDIO 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 (64) on the remote control to
select “SEPAL”.
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 1 time to set to "SEPAH" mode.
Press the VOL. UP/DOWN button on the remote control
to adjust it until the audio output wave becomes a fine
sine wave.
Set the multi-sound signal generator L-ch=1KHz, R-ch
=Non input and receive the RF signal.
Connect the oscilloscope to the Audio Out Jack (R-ch).
Press the AUDIO 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 (64) on the remote control to
select “SEPAL”.
Press the VOL. UP/DOWN button on the remote control
to adjust it until the R-ch output becomes minimum.
Press the CH UP button 1 time to set to "SEPAH" mode.
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 signal.
Connect the oscilloscope to the Audio Out Jack (L-ch).
Then perform the above adjustments 3~7.
D-2
ELECTRICAL ADJUSTMENTS
2-10: OSD HORIZONTAL
Activate the adjustment mode display of Fig. 1-1.
1.
Press the VOL. UP/DOWN button on the remote control
2.
until the difference of A and B becomes minimum.
(Refer to Fig. 2-1)
01 OSD
13
A
2-11: LEVEL
1.
Receive the VHF HIGH (70dB).
2.
Connect the AC voltmeter to pin 6 of CP101.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (63) on the remote control to
select "LVL".
4.
Press the VOL. UP/DOWN button on the remote control
until the AC voltmeter is 75 ± 2mV.
2-12: BRIGHT CENTER
1.
Receive the monoscope pattern. (RF Input)
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 (18) on the remote control to
select "BRTC".
4.
Press the VOL. UP/DOWN button on the remote control
until the white 15% is starting to be visible
5.
Receive the monoscope pattern. (Audio Video Input)
6.
Press the INPUT SELECT button on the remote control
to set to the AV mode.
7.
Using the remote control, set the brightness and contrast
to normal position.
8.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (30) on the remote control to
select "BRTCA".
9.
Press the VOL. UP/DOWN button on the remote control
until the white 15% is starting to be visible
10.
Press the TV/DVD button on the remote control to set to
the DVD mode.
11.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (42) on the remote control to
select "BRTCD".
12.
Press the VOL. UP/DOWN button on the remote control
to set the same step numbers as the AV.
13.
Press the GAME button on the remote control to set to
the GAME mode.
14.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (54) on the remote control to
select "BRTCG".
15.
Press the VOL. UP/DOWN button on the remote control
to set the same step numbers as the AV.
B
Fig. 2-1
2-13: TINT CENTER
1.
Receive the color bar pattern. (RF Input)
2.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
3.
Connect the oscilloscope to TP024.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (27) on the remote control to
select "TNTC".
5.
Press the VOL. UP/DOWN button on the remote control
until the section "A" becomes a straight line.
(Refer to Fig. 2-2)
6.
Receive the color bar pattern. (Audio Video Input)
7.
Press the INPUT SELECT button on the remote control
to set to the AV mode.
8.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
9.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (39) on the remote control to
select "TNTCA".
10.
Press the VOL. UP/DOWN button on the remote control
until the section "A" becomes a straight line.
(Refer to Fig. 2-2)
11.
Press the TV/DVD button on the remote control to set to
the DVD mode.
12.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (51) on the remote control to
select "TNTCD".
13.
Press the VOL. UP/DOWN button on the remote control
to set the same step numbers as the AV.
D-3
"A"
Fig. 2-2
ELECTRICAL ADJUSTMENTS
2-14: COLOR CENTER
1.
Receive the color bar pattern. (RF Input)
2.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
3.
Connect the oscilloscope to TP022.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (24) on the remote control to
select "COLC".
5.
Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and 0%
is set to 4 scales on the screen of the oscilloscope.
6.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 110 ± 10% of the
white level. (Refer to Fig. 2-3)
7.
Receive the color bar pattern. (Audio Video Input)
8.
Press the INPUT SELECT button on the remote control
to set to the AV mode.
9.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
10.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (36) on the remote control to
select "COLCA".
11.
Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and 0%
is set to 4 scales on the screen of the oscilloscope.
12.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 110 ± 10% of the
white level. (Refer to Fig. 2-3)
13.
Press the TV/DVD button on the remote control to set to
the DVD mode.
14.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (48) on the remote control to
select "COLCD".
15.
Press the VOL. UP/DOWN button on the remote control
to decrease the step numbers by 8 steps to the AV.
White 0%
100%
White 100%
Red Level
Fig. 2-3
2-15: CONTRAST MAX
Activate the adjustment mode display of Fig. 1-1 and
1.
press the channel button (22) on the remote control to
select "CNTX".
Press the VOL. UP/DOWN button on the remote control
2.
until the contrast step No. becomes "74"
Receive a broadcast and check if the picture is normal.
3.
Press the INPUT SELECT button on the remote control
4.
to set to the AV mode.
Activate the adjustment mode display of Fig. 1-1 and
5.
press the channel button (34) on the remote control to
select "CNTXA".
Press the VOL. UP/DOWN button on the remote control
6.
until the contrast step No. becomes "74"
Receive a broadcast and check if the picture is normal.
7.
Press the TV/DVD button on the remote control to set to
8.
the DVD mode.
Activate the adjustment mode display of Fig. 1-1 and
9.
press the channel button (46) on the remote control to
select "CNTXD".
Press the VOL. UP/DOWN button on the remote control
10.
to set the same step numbers as the AV.
Press the GAME button on the remote control to set to
11.
the GAME mode.
Activate the adjustment mode display of Fig. 1-1 and
12.
press the channel button (58) on the remote control to
select "CNTXG".
Press the VOL. UP/DOWN button on the remote control
13.
to set the same step numbers as the AV.
2-16: Confirmation of Fixed Value (Step No.)
Please check if the fixed values of the each adjustment
items are set correctly referring below.
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)
1.
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.
2.
Receive the green raster pattern from the color bar
generator.
3.
Slide the deflection yoke until it touches the funnel
side of the CRT.
4.
Adjust center of screen to green, with red and blue on the
sides, using the pair of purity magnets.
5.
Switch the color bar generator from the green raster
pattern to the crosshatch pattern.
6.
Combine red and blue of the 3 color crosshatch pattern
on the center of the screen by adjusting the pair of
4 pole magnets.
7.
Combine red/blue (magenta) and green by adjusting the
pair of 6 pole magnets.
8.
Adjust the crosshatch pattern to change to white
by repeating steps 6 and 7.
3-2: PURITY
NOTE
Adjust after performing adjustments in section 3-1.
3-3: STATIC CONVERGENCE
NOTE
Adjust after performing adjustments in section 3-2.
1.
Receive the crosshatch pattern from the color bar
generator.
2.
Combine red and blue of the 3 color crosshatch pattern
on the center of the screen by adjusting the pair of
4 pole magnets.
3.
Combine red/blue (magenta) and green by adjusting the
pair of 6 pole magnets.
3-4: DYNAMIC CONVERGENCE
NOTE
Adjust after performing adjustments in section 3-3.
1.2.Adjust the differences around the screen by moving
the deflection yoke upward/downward and right/left.
(Refer to Fig. 3-2-a)
Insert three wedges between the deflection yoke and
CRT funnel to fix the deflection yoke.
(Refer to Fig. 3-2-b)
R G B
R
G
B
UPWARD/DOWNWARD SLANT RIGHT/LEFT SLANT
R
G
B
Fig. 3-2-a
R G B
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.