Electrical Adjustments; Equipment Used; Connection Of Equipment; Setup For Adjustment - Sony XVM-R70 Service Manual

XVM-R70

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

5-2. CONNECTION OF EQUIPMENT

Unless otherwise specified, the equipment should be connected as shown below.
monitor
main board
XVM-R70
TP507(+)
TP500(-)

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.
10-step gray scale signal (with burst), 1Vp-p, 75 Ω
14
SECTION 5

ELECTRICAL ADJUSTMENTS

NTSC pattern
generator
VIDEO OUT
(75 Ω)
connection box
XA-115
stabilized
power supply
14.4 V