SET-UP ADJUSTMENTS.pdf

SET-UP ADJUSTMENTS.pdf
SECTION 3 SET-UP ADJUSTMENTS
•
•
•
Carry out the adjustments in the following order :
3-1.
Beam Landing.
3-2.
Convergence.
3-3.
Focus.
3-4.
White Balance.
When complete readjustment is necessary or a new picture tube
is installed, carry out the following adjustments.
Unless there are specific instructions to the contrary, carry out
these adjustments with the rated power supply.
Unless there are specific instructions to the contrary, set the
controls and switches to the following settings :
Contrast
Note : Test equipment required.
1.
Color bar/pattern generator.
2.
Degausser.
3.
Oscilloscope.
4.
Digital multimeter.
.................................. normal
Brightness .................................. normal
3-1. Beam Landing
Preparation :
(2) Landing
1.
Note : Before carrying out the following adjustments adjust the
magnets as indicated below [See Fig.3-4].
1. Input a crosshatch signal from the signal generator.
2. Rough-adjust the focus and horizontal convergence.
3. Switch from the crosshatch pattern to an all-red pattern.
4. Move the deflection yoke backwards and adjust with the purity
magnet so that the red is at the centre and it aligns
symmetrically [See Fig.3-5].
5. Move the deflection yoke forward to the point where the entire
screen just becomes red [Mark its position].
6. Move the deflection yoke further forward until the screen just
changes colour at the edges. [Mark its position]
7. Position the deflection yoke between the two marks indicated
above.
8. Input a crosshatch pattern from the pattern generator and rotate
the deflection yoke so that the horizontal lines are parallel with
the top and bottom of the screen.
9. When the position of the deflection yoke has been determined,
fasten it with its fixing screw.
10. Switch the pattern generator to green then blue and confirm the
purity.
11. If the beam does not land correctly in all the corners of the
screen, use disk magnets to correct it. [Confirm the corner
landing forgreen and blue]
2.
In order to reduce the influence of geomagnetism on the set’s
picture tube, face it in an easterly or westerly direction.
Switch on the TV set’s power and degauss with a degausser.
(1) Adjustment of Correction Magnet for Y-Splitting Axis.
1.
2.
3.
4.
5.
6.
7.
Input a crosshatch signal from the pattern generator.
Set the Picture control to minimum and confirm that the
Brightness control is set to normal.
Position the neck assembly as indicated in Fig.3-2.
Loosen the deflection yoke fixing screw.
Move the deflection yoke as far forward as is possible.
Adjust the upper and lower pin symmetrically by opening or
closing the Y-splitting axis correction magnets located on the
neck assembly. [See Fig 3-3]
Return the deflection yoke to its original position and re-tighten
its fixing screw.
Fig.3-1
Y-splitting axis correction magnet
Fig.3-2
Neck assy
G2
G1
+
G3
Caution :
High voltages are present on the Deflection yoke terminals - take care
when handling the Deflection yoke whilst carrying out
adjustments.
Fig.3-3
- 16 -
Align the edge
of the neck assy with
the edge of the G2 grid
on the G3 side.
Fig.3-4
Align both Purity
magnets to the vertical
position
Purity magnets
Purity control magnets
Align pips on
each magnet
3-2. Convergence
(1) Screen centre convergence [Static convergence]
1.
2.
3.
GREEN
Input a dot pattern signal from the pattern generator.
Normalize the picture setting.
[Moving vertically], adjust the V.STAT magnet so that the
vertical red, green and blue dots coincide at the centre of the
screen.
RED
BLUE
Center dot
R
G
B
Fig.3-5
R G
Purity control corrects
this area
a
c
Disk magnets or
rotatable disk
magnets correct
these areas (a-d)
B
V.STAT Vertical Static Magnet
H STAT
convergence
control
C Board
RV7375 (H STAT)
H STAT Convergence
(on mount side)
b
d
Deflection yoke positioning
corrects these areas
By opening or closing the V.STAT magnet, the red green and
blue dots move in the direction indicated below.
B
B
G
G
R
R
Disk Magnets
Note:
- 17 -
Do not adjust the H.STAT by rotating the V.STAT
magnets as this can affect the focus setting.
4.
Correction for HMC [Horizontal mis-convergence] and VMC
[Vertical mis-convergence] by using the BMC [Hexapole]
magnet.
HTIL correction can be performed by adding a THL correction
assembly to the Deflection yoke.
a). HMC correction by BMC [Hexapole] magnet and movement of
the electron beam.
H M C c orrec tion( A)
A < B R G
HMC co r r e ctio n ( B )
B
A > B R
A = B R G B
G B
A = B R G B
YCH Adjustment
b). VMC correction by BMC [Hexapole] magnet and movement of
the electron beam.
+
+
+
YCH VR
Deflection Yoke
VMC correction(A)
VMC correction(B)
TLV Adjustment
C < D
R
C
G
D
B
C
D
C = D
R
C > D
R
G
G
B
B
C = D
R
G
TLV VR
B
+
+
HAMP Adjustment
+
Deflection Yoke
H-TRAP Adjustment
Adjust the HAMP using HAMPL and HAMPR registers in the
Dynamic Convergence section of the service menu.
+
HTRAP VR
+
+
Deflection Yoke
HTIL Adjustment
THL Correction assy
The H-TRAP should not be adjusted unless absolutely necessary as it
affects the TLV settings.
- 18 -
Layout of each control
3-3. Focus Adjustment
1.
2.
3.
Purity magnet
BMC (Hexaploe) magnet
V STAT convergence magnet
Y-splitting axis correction magnet
Receive a television broadcast signal.
Normalize the picture setting.
Adjust the focus control located on the flyback transformer to
obtain the best focus at the centre of the screen.
Bring only the centre area of the screen into focus, the magentaring appears on the screen. In this case, adjust the focus to
optimize the screen uniformly.
Note : If you are unable to adjust the corner convergence properly,
this can be corrected with the use of permalloy magnets.
Focus
a
b
Screen
a-d: screen-corner
convergence defect
c
d
3-4. Screen (G2), White Balance
[Adjustment in the service mode using the remote
commander]
G2 adjustment [RV5376]
1.
2.
3.
4.
Install the permalloy assembly
for the area that needs correcting.
a
White balance adjustment for TV mode
1.
2.
b
3.
4.
5.
6.
7.
8.
Permalloy Assy
X-4387-214-1
c
d
Input a dot signal from the pattern generator.
Set the Picture, Brightness and Colour to minimum.
Apply 165V DC from an external power supply to the R, G
and B cathodes of the CRT.
Whilst watching the picture, adjust the G2 control [SCREEN]
located on the flyback transformer to the point just before the
flyback return lines disappear.
Convergence adjustment with permalloy
9.
10.
11.
12.
13.
- 19 -
Input an all-white signal from the pattern generator.
Program the Remote Commander for operation in Service Mode.
[ See Page 20 ].
Enter into the ‘Service Mode’ by pressing ‘VIDEO’ button twice
and ‘MENU’ on the Service Commander.
Select ‘Service’ from the on screen menu display and press
‘Right Arrow’.
The ‘Service’ menu will appear on the screen.[See Page 21]
Set the ‘Contrast’ to MAX.
Set the ‘R-Drive’ to 50.
Adjust the ‘G-Drive’ and the ‘B-Drive’ so that the white
balance becomes optimum.
Press the ‘OK’ button to write the data for each item.
Set the ‘Contrast’ to MIN.
Set the ‘R-Cutoff’ to 29.
Adjust the ‘G-Cutoff’, and the ‘B-Cutoff’ with the left and
right buttons on the remote commander so that the white
balance becomes optimum.
Press the ‘OK’ button to write the data for each item.
SECTION 4 CIRCUIT ADJUSTMENTS
4-1. Electrical Adjustments
GEOMETRY
Service adjustments to this model can be performed using the
supplied remote Commander RM-934.
ABL TH
ABL MODE
P ABL
V SIZE
V POSITION
V COMP
V LIN
S CORRECTION
H SIZE
PIN AMP
UP CORNERPIN
M PIN
LO CORNERPIN
TRAPEZIUM
H POSITION
AFC BOW
AFC ANGLE
LEFT BLK
RIGHT BLK
V ASPECT
AKBTIM1
AKBTIM2
IKR
HNG
VNG
Programming the Remote Commander for
Operation in Service Mode
1.
Press the VCR/TV/DVD button until the
TV LED lights.
2.
Press and hold the yellow button for
approx. 5 seconds until the TV LED
flashes quickly.
3.
Press 99999. All three LED’s should light.
The remote commander is now set to Service Mode.
4.
To return the remote commander to normal operation mode
repeat steps 1. and 2. then press 00000. All three LED’s
should light.
The remote commander is now set to normal mode.
Setting the TV into Service Mode
1.
Program the remote commander for operation in Service
Mode as described above.
2.
Turn on the TV main power switch.
3.
Press the video standby button
on the remote
commander twice.
‘TT ’ will appear in the upper right corner of the screen.
Other status information will also be displayed.
4.
Press ‘MENU’ on the remote commander to obtain the
following menu on the screen.
AE6B v0.14 (Jun 2001)
Factor y data FFh FFh
MSP Device : MSP3411G
6.
7.
·
0
0
15
35
33
1
7
7
44
32
29
2
29
2
40
8
9
34
17
47
2
0
1
0
0
DYN. CONV.
Geometry
Service
Scanrate
DAC
Dyn. Conv.
PiP
Sound
IF adjust
Error Menu
5.
(0, 3)
(0, 3)
(0, 15)
(0, 63)
(0, 63)
(0, 3)
(0, 15)
(0, 15)
(0, 63)
(0, 63)
(0, 63)
(0, 3)
(0, 63)
(0, 15)
(0, 63)
(0, 15)
(0, 15)
(0, 63)
(0, 63)
(0, 63)
(0, 3)
(0, 1)
Move to the corresponding adjustment item using the
up or down arrow buttons on the Remote Commander.
Press the right arrow button to enter into the required menu item.
Press the ‘Menu’ button on the Remote Commander to quit the
Service Mode when all adjustments have been completed.
Note :
·
After carrying out the service adjustments, to prevent the
customer accessing the ‘Service Menu’ switch the TV set
OFF and then ON.
- 20 -
RANGE
YupL
VAL
YlowL
VAL
MBOWupL
VAL
MBOWlowL
VAL
HAMPL
VAL
YupR
VAL
YlowR
VAL
MBOWupR
VAL
MBOWlowR
VAL
HAMPR
VAL
UP Y
VAL
LOW Y
VAL
H STAT
VAL
UP CORR
VAL
LOW CORR
VAL
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
(0, 1)
(0, 63)
63
0
30
0
31
0
31
0
32
0
37
0
30
0
30
0
32
0
32
0
36
0
31
0
33
0
33
0
34
0
19
IF ADJUST
ERROR MENU
Automute
Audio Gain
L Gating
1
0
0
E02
E03
E04
E05
E06
E07
E08
E09
E10
E11
E12
E13
E14
E15
E16
SERVICE
SUB COL
SUB HUE
SUB SHARP
SUB BRIGHT
SUB CONT
R-DRIVE
G-DRIVE
B-DRIVE
R CUTOFF
G CUTOFF
B CUTOFF
Br TXT
Br OSD
Adj
31
30
13
12
50
Adj
Adj
28
24
46
7
10
(0, 63)
(0, 63)
(0, 63)
(0, 63)
(0, 15)
(0, 63)
(0, 63)
(0, 63)
(0, 63)
(0, 63)
(0, 63)
(0, 15)
(0, 15)
OCP
OVP
VSYNC
IKR
IIC
NVM
HPROT
TUNER
SOUNDP
SCANRATE
DAC
BACKEND
DYN CON
PIP
WORKING TIME
HOURS
MINUTES
(0,
(0,
(0,
(0,
(0,
(0,
(0,
(0,
(0,
(0,
(0,
(0,
(0,
(0,
(0,
255)
255)
255)
255)
255)
255)
255)
255)
255)
255)
255)
255)
255)
255)
255)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
14
7
Sub Brightness Adjustment
1.
2.
DAC
CONFIG
MPIN CONT
HLIN
HTRAP
ROT. COIL
PHOCUS PH
3.
4.
00000000
(0,
(0,
(0,
(0,
(0,
255)
255)
255)
255)
255)
96
83
127
130
90
Sub Contrast Adjustment
1.
2.
3.
SOUND
M-N
M-D
M-S
S-M
D-M
N-M
BBE
B1
B2
B3
B4
B5
SW L
SW F
NICAM C AD
NICAM Error
Stereo
Status
4.
200
-20
+20
+10
-10
496
+28
+0
+0
+0
+0
+0
+0
+30
(0, 511)
(-128, -1)
(+0, +127)
(+0, +127)
(-128, -1)
(0, 1023)
(+0, +68)
(-96, +96)
(-96, +96)
(-96, +96)
(-96, +96)
(-96, +96)
(-128, +0)
(+5, +40)
Input a Monoscope pattern.
Program the Remote Commander for operation in Service Mode.
[ See Page 20 ].
Press ‘VIDEO’ ‘VIDEO’ 13 on the Remote Commander.
Adjust the ‘Sub-Brightness’ data so that there is barely a
difference between the 0 IRE and 10 IRE signal levels.
Input a video signal that contains a small 100% white area on a
black background.
Connect an digital voltmeter to Pin 10 of J7378 [C Board].
Program the Remote Commander for operation in Service Mode.
[ See Page 20 ].
Adjust the Sub-Contrast [ Using ‘VIDEO’ ‘VIDEO’ ‘11’ ] to
obtain a voltage of 105 +/- 5V.
Sub Colour Adjustment
1.
2.
3.
4.
Receive a PAL colour bar signal.
Connect an oscilloscope to Pin 6 of CN7001 [A Board].
Program the Remote Commander for operation in Service Mode.
[ See Page 20 ].
Adjust the ‘Sub Colour’ [ Using ‘VIDEO’ ‘VIDEO’ ‘12’ ] so
that the Cyan, Magenta and Blue colour bars are of equal levels
as indicated below.
10001
(0, 2047)
(-128, +127)
0
+0
Same Level
0000000110
B-Out Waveform
- 21 -
Deflection System Adjustment
1.
2.
4-3. TEST MODE 2:
Program the Remote Commander for operation in Service Mode.
[ See Page 20 ] and enter into the ‘Geometry’ service menu.
Select and adjust each item in order to obtain the optimum image.
V SIZE
V LIN
Test Mode 2 is available by rogramming the Remote Commander for
operation in Service Mode [ As shown on Page 20 ] then pressing the
‘VIDEO’ button twice, OSD ‘TT’ appears. The functions described
below are available by selecting the two numbers. To release the ‘Test
mode 2’, press 00, 10, 20 ... twice or switch the TV set into Stand-by
mode. In ‘TT Menu’ mode, it is possible to remove the Menu from
the screen by pressing the Speaker Off button once. Pressing the
Speaker OFF button a second time will cause the Menu to reappear.
The function is kept even when the menu is not displayed on
screen !!.
AFC BOW
V POSITION
H POSITION
H SIZE
PIN AMP
TRAPEZIUM
UP CORNER PIN
AFC ANGLE
LO CORNER PIN
GEOMETRY
ABL TH
ABL MODE
P A BL
V SIZE
V POSITION
V CO M P
V LIN
S CORRECTION
H SIZE
PIN AMP
UP CORNERPIN
M PIN
LO CORNERPIN
TRAPEZIUM
H POSITION
AFC BOW
AFC ANGLE
LEFT BLK
RIGHT BLK
V ASPECT
AKBTIM1
AKBTIM2
IKR
HNG
VNG
(0, 3)
(0, 3)
(0, 15)
(0, 63)
(0, 63)
(0, 3)
(0, 15)
(0, 15)
(0, 63)
(0, 63)
(0, 63)
(0, 3)
(0, 63)
(0, 15)
(0, 63)
(0, 15)
(0, 15)
(0, 63)
(0, 63)
(0, 63)
(0, 3)
(0, 1)
0
0
15
35
33
1
7
7
44
32
29
2
29
2
40
8
9
34
17
47
2
0
1
0
0
- 22 -
00
01
02
03
04
05
06
07
08
11
12
13
14
15
16
19
21
22
23
24
25
26
'TT' mode off
Picture maximum
Picture minimum
Set speaker/headphone Volume
Set speaker/headphone Volume
Set speaker/headphone Volume
Set speaker/headphone Volume
Ageing mode
Shipping Condition
Sub picture adjustment
Sub colour adjustment
Sub Brightness adjustment
Text H Position adjustment
Rotation Coil Test
Picture level 50%
Factory Mode Enable/Disable
Destination ADEKR
Destination BL
Destination ADEKR
Destination U
Destination ADEKR
Destination BL
27
28
31
36
41
43
44
45
46
48
49
53
55
59
68
73
74
78
79
87
99
Destination ADEKR
Destination ADEKR
Auto Shutoff Enable/Disable
Velocity Modulation (VM) OFF/ON test
Re-initialise NVM
Select Dual A sound
Select Dual B sound
Select Mono sound
Select Stereo sound
Set NVM as non virgin
Set NVM as virgin
FM Overmodulation Enable/Disable
Tuner selection (SONY/ALPS)
Select Model 3 Scar ts + PIP or 2 Scar ts
Enable/Disable X26 countermeasure (N problem)
Enable Zweiton D/K2 system (6.5/6.74)
Enable Zweiton D/K3 system (6.5/5.74)
Balance full right
Balance full left
Local keys test
Display Error and Working Time menu
to
to
to
to
35%
50%
65%
80%
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