Centering Adjustment; Block Diagram - Goldstar MONOCHROME MONITOR MBM-2105GIA Service Manual

REGULATED B + ADJUSTMENT (VRSOl)
1.
Connect high impedance voltmeter between
emitter and ground rotate the B +
adjustment control (VR901) to obtain a reading of
12.0 2 O.lV.
FOCUS (VR704)
2.
Adjust the focus control (VR704) for best overall
focus of the test pattern (marked with the symbol
Usually the center and corners of the
screen do not focus at the same setting and a
compromise must be made.
3. VERTICAL SIZE (VR601)
The vertical size control (VR601) should be adjust
for the picture to fill the screen vertically.
4. HORIZONTAL SIZE (L703)
The horizontal size control (H-site coil) should be
adjusted for the picture to fill the screen horizontal-
ly.
A C 12OV
ADJUSTMENT
5. HORIZONTAL POSITION NR701)
6. SUB-BRIGHT (VR703)
7.
BLOCK DIAGRAM
TR302
TEA 2037A
Filter
The horizontal position control (VH701) snould be
adjusted for the horizontal picture position.
Adjust subbright control (VR703) for visual cut off
of the raster when external brightness is turned to
maximum
CENTERING ADJUSTMENT
It the raster is not centered horizontally and verti-
cally it may be centered by removing the cabinet
back and adjusting the centering tabs on the neck
of the tube, located at the rear of the deflection
yoke. Turn the whole device clockwise or
counterclockwise. To increase the amount of raster
shift move the two tabs which project from the
device farther apart, if raster is tilted on an angle,
it may be straightened by loosening the deflection
yoke clamp and rotating the deflection yoke.
Output
TR303, TR304
,
R E G .