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Electrical Adjustments; Equipment Used; Connection Of Equipment; Setup For Adjustment - Sony XVM-B62 Service Manual

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5-1. EQUIPMENT USED

The following measuring equipment are used for these electrical
adjustments:
• Oscilloscope
• NTSC pattern generator
• Stabilized power supply
• Digital voltmeter
• Frequency counter
• LCD flicker checker
• LCD color analyzer

5-2. CONNECTION OF EQUIPMENT

Unless otherwise specified, the equipment should be connected as
shown below.
main board
TP410(+)
TP411(–)
XVM-B62
TP413
TP415
TP414
SECTION 5

ELECTRICAL ADJUSTMENTS

NTSC pattern
generator
VIDEO OUT
(75 Ω)
stabilized
power supply
14.4 V
+

5-3. SETUP FOR ADJUSTMENT

The 10-step gray scale signal from the NTSC pattern generator is
used as an adjustment signal for V COM voltage/position adjustment
as well as VIDEO adjustment.
H
10-step gray scale signal, 1Vp-p, 75 Ω
The all white 50%, all white 30% signal from the NTSC pattern
generator is used as an adjustment signal for flicker and white
balance adjustment.
0.5
Vp-p
H
All white 50% and All white 30% signal, 75 Ω
XVM-B62
1Vp-p
0.286Vp-p
All white 50%
All white 30%
0.643
Vp-p
0.286Vp-p
9

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