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TC-20KL04A / TC-20KL04P / TC-29KL04A / TC-29KL04P
5- PAL COLOR OUTPUT SIGNAL ADJUSTMENT
1. Supply a color bar signal and adjust the local frequency.
2. Adjust “IMAGE” to DYNAMIC NORMAL, “CONTRAST” to
63 and “SUB-CONTRAST” to 21.
3. Adjust the “CHANNEL COLOR” level to NORMAL.
4. Set to CHK2 service mode option, press “5” on the remote
control unit and confirm that OSD becomes blue (AKB
turned off).
5. Set ABL to OFF (in CHK2 mode, to access BRT, CONT, S-
CONT or S-TINT).
6. Adjust [A] for 2.3 ± 0.2V through the BRIGHT control variation
in the test point TPL2.
7. Confirm:
Model
20”
29”
RGB Contrast
7 DAC 11DAC
{352}
17
1B
8. Fix G-DRIVE GAIN, R-DRIVE GAIN and B-DRIVE GAIN
data in 1FH or 31 DAC.
R-DRIVE GAIN: [SLV(8A), SUB (16)]
G-DRIVE GAIN: [SLV(8A), SUB (17)]
B-DRIVE GAIN: [SLV(8A), SUB (18)]
CALIBRATION:
1. Connect the oscilloscope in TPL2 (G-OUT) with a 10K
Ω
resistor and adjust “CONTRAST”, so that the [
B
] waveform
it is 2.3±0.1V with 14” CRT and 2.6±0.1V with 20” CRT.
2. Adjust “SUB-COLOR” to obtain 2,45±0.1V in [
D
]
according to fig. 1.
3. Connect the oscilloscope in TPL1 (R-OUT) with a 10K
Ω
resistor and confirm that the [
C
] waveform it is 2.45±0.1V
according to fig. 2.
4. Press the key “5” (AKB ON) and confirm that OSD
becomes white.
Fig. 1
A
= 2.3 ±0.1Vo-p
B
= 2.4±0.1V
D
= 2.45±0.1V
Fig. 2
A
= 2.3 ±0.2Vo-p
C
= 2.45±0.1V
6- NTSC SUB-TINT CALIBRATION
1. Connect the oscilloscope in TPL1 (R-OUT) with a 10K
Ω
resistor.
2. Supply a Rainbow signal (NTSC 3.58 MHz) through
VIDEO IN.
3. Select “IMAGE” to DYNAMIC NORMAL.
4. Select “COLOR FOR CHANNEL” to NORMAL.
5. On CHK2 service mode, press “5” (AKB OFF) and confirm
that OSD becomes blue (AKB turned off).
6. Set ABL to OFF (on CHK2 mode, to access BRT, CONT,
S-CONT or S-TINT).
CALIBRATION:
1. Adjust [C] for 5.0±0.2V through the BRIGHT control
variation (CHK2) according to fig. 1.
2. Adjust SUB TINT-NTSC so that the levels of positions 2, 3
and 4 of Fig. 1 in accordance with the Fig. 2.
3. Set ABL to ON.
4. Press “5” and confirm that OSD becomes white (AKB
turned on).
Fig. 1
Fig. 2
7- PROTECTION CIRCUIT (SHUTDOWN)
CONFIRMATION OF OPERATION
1.
Supply a
crosshatch pattern
signal
and adjust the
CONTRAST and BRIGHT DAC controls to minimum.
(Ibeam=0
µ
A)
CONFIRMATION:
1. Connect the voltmeter in TPA22 and confirm that the
voltage is smaller than [
A
].
2. Connect a DC source in TPA22 and confirm that the
protection circuit doesn't act when the voltage is [
B
].
3. Confirm that the protection circuit acts with smaller voltage
than [
C
].
ADJUSTMENTS
ITEM / PREPARATION
PROCEDURE
Condition / Model
20KL
29KL
A
22,4V
18,7V
B
23,4V
19,5V
C
26,1V
21,5V
Содержание TC-20KL04A
Страница 20: ... 20 TC 20KL04A TC 20KL04P TC 29KL04A TC 29KL04P G P C B SCHEMATIC DIAGRAM Frontal AV and Headphone Connectors ...
Страница 21: ... 21 TC 20KL04A TC 20KL04P TC 29KL04A TC 29KL04P R P C B SCHEMATIC DIAGRAM Remote Control Receptor ...
Страница 22: ... 22 TC 20KL04A TC 20KL04P TC 29KL04A TC 29KL04P Z P C B SCHEMATIC DIAGRAM ...
Страница 24: ... 24 TC 20KL04A TC 20KL04P TC 29KL04A TC 29KL04P MAIN BOARD CIRCUIT LAYOUT ...
Страница 26: ... 26 TC 20KL04A TC 20KL04P TC 29KL04A TC 29KL04P Pin 42 Pin 55 IC601 Pin 18 Pin 19 Pin 38 Pin 40 ...
Страница 27: ... 27 TC 20KL04A TC 20KL04P TC 29KL04A TC 29KL04P Pin 64 IC601 Pin 56 Pin 57 Pin 58 Pin 63 ...
Страница 40: ...Panasonic da Amazônia S A CS DIVISION TECHNICAL SUPPORT Rod Presidente Dutra Km 155 São José dos Campos SP ...
