Goldstar MONOCHROME MONITOR MBM-2105GIA - Manual (Page 5)

ADJUSTMENT
1.
REGULATED B + ADJUSTMENT
Connect high impedance voltmeter between
emitter and ground rotate the B
adjustment control to obtain a reading of
12.0
2.
FOCUS
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
The vertical size control (VR601) should be adjust
for the picture to fill the screen vertically.
4. HORIZONTAL SIZE
The horizontal size control (H-site coil) should be
adjusted for the picture to fill the screen horizontal-
ly.
5. HORIZONTAL POSITION
The horizontal position control (VH701) snould be
adjusted for the horizontal picture position.
6. SUB-BRIGHT (VR703)
Adjust subbright control (VR703) for cut off
of the raster when external brightness is turned to
maximum
7. 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.
BLOCK DIAGRAM
Input
TR302
Output
TR303, TR304
TEA
A C
R E G .
,
Filter