Panasonic TC-29P10N / TC-33P10N Service Manual ▷ View online
- 25 -
Focus adjustment
Adjustment after board exchange
Adjustment after [DF] DAF board exchange
Adjustment jig
Color pattern generator
Measuring location
TV screen (visual observation)
Input signal
Crosshatch pattern
1. Focus adjustment
1. Receive a crosshatch pattern.
2. Adjust Focus 1 so that the thickness of the vertical line
2. Adjust Focus 1 so that the thickness of the vertical line
in the
figure on the left becomes a minimum.
3. Adjust Focus 2 so that the horizontal line thickness at the intersection
of the vertical line
and the horizontal line
becomes a minimum.
4. Confirm that the focus at the center and at the outer circumference is
balanced. In case of bad balance, repeat the adjustments 2. and 3..
Adjustment conditions
Set GR to "ON". (Refer to page 10 in the Service Manual.)
Black level
"0" Center
Picture
"+30" Maximum
1
1 2 3 4 5 6 7 8 7 6 5 4 3 2 1
2
3
4
5
6
5
4
3
2
1
3
4
5
6
5
4
3
2
1
Adjust with Focus 2 to a minimum.
Adjust with Focus 1 to a minimum.
Image adjustment
1
1 2 3 4 5 6 7 8 7 6 5 4 3 2 1
2
3
4
5
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5
4
3
2
1
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6
5
4
3
2
1
Adjustment jig
Color pattern generator
Measuring location
TV screen (visual observation)
Adjustment location DAF board [DF], R1577
Input signal
Crosshatch pattern
1. DAF Phase Adjustment
1. Receive a crosshatch pattern
2. Use Focus 2 to adjust the center to underfocussed condition.
3. Adjust R1577 on the DAF board [DF] so that the left-right balance of
2. Use Focus 2 to adjust the center to underfocussed condition.
3. Adjust R1577 on the DAF board [DF] so that the left-right balance of
the intersection of the horizontal line
and the vertical lines
becomes equal.
4. Perform focus adjustment.
$ !"
- 26 -
Adjustment after exchange of the video signal processing board [AG]
1.95
0.22V
3.0
0.05V
Adjustment jig
Color pattern generator
Meassuring location TP47G (board [A])
Adjustment location Remote control buttons [VOL +/-]
Input signal
Studio color bar
Oscilloscope
Board [A], coupler [A31], pin 2
1. Contrast Adjustment
1. Make the following setting in service maintenance mode.
At this time, record the original values.
2. Connect TPD2 of board [D] and TP02 of board [A] to earth.
3. Receive a studio color bar.
4. Confirm that the video signal at pin
3. Receive a studio color bar.
4. Confirm that the video signal at pin
of the coupler A31 of board
[A] is 1.95
0.22V.
5. Select the item [
] (PICTURE) of [
] (Sub-
adjustment) in service maintenance mode (omitted in the following).
6. Adjust with the remote control buttons [VOL +/-] so that the signal at
TP47G of board [A] becomes 3.0
0.05V.
Next, set the value to 35 steps (hexadecimal) below this adjustment
value. (Press the remote control button [VOL -] 335 times.)
value. (Press the remote control button [VOL -] 335 times.)
7. Confirm that there is no shrinkage of the waveform. If there is, select
the item [
] (Black level) of [
] (Sub-adjustment) and
correct with the remote control buttons [VOL +/-].
8. Return the adjustment value for [G-CUT] of "WB sub-adjustment" to
the original value.
Next, perform "2. Color Output, Hue Adjustment".
If "2. Color Output, Hue Adjustment" is not to be performed, go to
the following step 9..
Next, perform "2. Color Output, Hue Adjustment".
If "2. Color Output, Hue Adjustment" is not to be performed, go to
the following step 9..
9. Remove the earth from TPD2 of board [D] and TP02 of board [A].
Adjustment conditions
Picture
Maximum (+30)
Image adjustment
Black level
Center (0)
Sharpness
Center (+10)
Image menu
Dynamic
(Sub-adjustment)
(Black level)
G-CUT
7F
2F
WB
(WB adjustment)
(WB adjustment)
% !"
- 27 -
Adjustment jig
Color pattern generator
Measuring location
Board [A], TP47G, TP47R
Input signal
Rainbow color pattern
Oscilloscope
2. Color Output, Hue Adjustment
1. Make the following setting in service maintenance mode.
At this time, record the original values.
2. Confirm that TPD2 of board [D] and TP02 of board [A] are
connected to earth.
3. Receive a rainbow color bar.
4. Select the item [
4. Select the item [
] (Hue) of [
] (Sub-adjustment) and
adjust the remote control buttons [VOL +/-] so that the signal phase
at TP47R of board [A] becomes A:B = 1:3 as shown in the figure on
the left. At this time, record the adjustment value.
at TP47R of board [A] becomes A:B = 1:3 as shown in the figure on
the left. At this time, record the adjustment value.
5. Select the item [
] (Color darkness) of [
] (Sub-
adjustment) and adjust the remote control buttons [VOL +/-] so that
the signal level at TP47G of board [A] (Fig. 2) becomes 1.0
the signal level at TP47G of board [A] (Fig. 2) becomes 1.0
0.05V.
Next, set the value to 20 steps (hexadecimal) below this adjustment
value. (Press the remote control button [VOL -] 20 times.)
value. (Press the remote control button [VOL -] 20 times.)
6. Select the item [
] (Hue) of [
] (Sub-adjustment) and
set to a value 20 steps (hexadesimal) below the recorded value.
(Press the remote control button [VOL -] 20times.)
(Press the remote control button [VOL -] 20times.)
7. Disconnect TPD2 of board [D] and TP02 of board [A] from earth.
Performed after "1. Contrast Adjustment".
Adjustment conditions
Color darkness
Center (0)
Hue
Center (0)
Picture
Maximum (+30)
Black level
Center (0)
Image menu
Dynamic
Image adjustment
A
B
1
2
3
4
5
6 7
8
9 10
A:B=1:3
Fig. 1: TP47R
1
8
9 10
2
7
3
4
5
6
Fig. 2: TP47G
1.0
0.05V
(Sub-adjustment)
WB
(WB adjustment)
(WB adjustment)
G-CUT
7F
1F
1F
1F
(Hue)
(Black level)
(Color darkness)
Geomagnetic adjustment (TC-33P10N only)
Adjustment jig
Demagnetizer
Measuring location
Board [GM], TPGM1 (Pin 1,2)
Input signal
DC voltage meter
1. Geomagnetic adjustment
1. Demagnetize the GM-Board around its preimeter with the
Demagnetizer.
2. Set to control;
GEOMAGNETIC SENSOR ....... ON
3. Connect a DC voltage meter to TPGM1-2pin (GM-
Board).
4. Adjust the R4863 (GM-Board) so that the Vx Out at
TPGM1-2pin becomes 4.55
0.05V.
5. Connect a DC voltage meter to TPGM1-1pin (GM-
Board).
6. Adjust the R4861 (GM-Board) so that the Vy Out at
TPG1-1pin becomes 4.75
0.05V.
& !"
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Memo
' !"
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