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3. The voltage check of the 3D-Noise-reduction-PLL circuit.
Equipment Digital voltmeter
Connections : + TP5103/ - chassis ground.
Input mode AV
Input signal Color bar signal(PAL)
Picture condition Normal
Check that the voltage of TP5103 is 2.9± 0.5VDC.
If it is not 2.9± 0.5VDC, check the periphery of the 3D-Noise-reduction-PLL cir-
cuit and repair it.
4. AV Color and Tint adjustments
Equipment Oscilloscope.
Input mode AV.
Input signal Color bar signal(NTSC)
Picture condition Normal.
Connections + TP221 or TP5183
- chassis ground.
Set the image to "Service mode."
Adjust each item for below values with the Volume + and - buttons.
Group No.
Adjustment part. Adjustment or adjustment value.
1000- 25 Amplitude-A in a figure. 0.45± 0.02Vp-p
1000- 24 Part-B, C and D in a figure.
Make those the same width.
5. Component Video signal adjustments
Equipment Oscilloscope.
Input mode Y, Cb, Cr.
Input signal 16 step gray scale signal
Picture condition Normal.
Set the image to "Service mode."
3-1. Component G Video adjustment
Connections + TP211 or TP2072 / - chassis ground.
Adjust each item for below values with the Volume + and - buttons.
Group No. Adjustment part.
Adjustment or adjustment value.
5010- 0 Amplitude-A in a figure. 0.66± 0.05Vp-p
5010- 1 Pedestal level and black level. Make it the same level.
3-2. Component R Video adjustment
Connections + TP201 or TP2071 / - chassis ground.
Adjust each item for below values with the Volume + and - buttons.
Group No. Adjustment part.
Adjustment or adjustment value.
5010- 2 Amplitude-A in a figure. 0.66± 0.05Vp-p
5010- 3 Pedestal level and black level. Make it the same level.
3-3. Component B Video adjustment
Connections + TP221 or TP2073 / - chassis ground.
Adjust each item for below values with the Volume + and - buttons.
Group No.
Adjustment part.
Adjustment or adjustment value.
5010- 4 Amplitude-A in a figure. 0.66± 0.05Vp-p
5010- 5 Pedestal level and black level. Make it the same level.
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