Star Tech Journal

-------------------ST"AR-1f IECH ~
_..,M.,Av.1..,s ...
a4 .....
APC
WELLS GARDNER
COLOR MONITOR SETUP INSTRUCTIONS
GltN
DRIVE
ADJU ■TMBNT
This adjustment should be made
only when the Chroma IC {IC201 ),
parts of the APC circuit have been
replaced, or when the picture colors
are unstable.
ltED
DltlVE
Procedures:
1. Apply a color bar signal to the
Video Input Terminal.
NEG H SYNC
GNO
f'OS
"OS
WHEN USING COM -
"0 SIT( SYNC US t
HORIZONTAL SYNC
INl'UTS.
K4901
K4902
K4903
K4906
K4911
K4951
K4952
K4956
K4956R
K4961
GND
aLu
GRN
R£D
2. Tum the Color Control fully clock·
wise and position the Tint Control
at Its mechanical center.
3. Connect a jumper between
TP201 and ground.
4. Turn the APC Adj. Control VR201
until the color bars on the screen
are synchronized.
5. Remove Jumper.
LUMINANCE
■ IA■
ADJU ■TM ■ NT
This is a factory adjusted control
and should require nofurtheratten-
tion. If, however, it becomes
necessary, the procedure is as
follows:
1. Connect a DC oscilloscope to
one of the video outputs.
HORIZ
V£RT VERT
VEltT
VfltT
HOIIIZ
SCIIHN
CENTERING SIZE HOLD DAMPING RASTER ltAST(II
"01.
SHI"*
NOT ON MODEL IC410S
2. Turn the lum. bias control fully
counterclockwise.
*
1. HORIZONTAL
FRl!BUIENCY
l!I. BLACK Ll!VIEL
Adjust the black level control to
obtain the proper black level
{the black portion of the picture
just extinguished). Do not use
the screen control to set the
black level.
With the monitor being driven
from the game signal, connect a
jumper between TP601 and
TP31. Adjust the horizontal hold
control until picture stops sliding
horizontally, remove jumper.
Do not use the horizontal hold
control for horizontal centering.
{See #3.) NOTE: When game
sync is composite, use horizon-
tal sync input.
l!I.
FOCU ■
Adjust the focus control for best
overall definition and fine picture
detail.
3. Slowly turn the control in the
clockwise direction until the black
level is just at the sync tips. The
sync
appears
just
fully
compressed.
Ail of the preceding material
was taken directly from the service
manual that comes with every
dedicated Space Ace cabinet
game. This is an extremely complete
manual including a complete parts
list and a schematic of every circuit
in the game.
R. PICTURI! BIZE
Adjust the vertical size control,
and the horizontal width coil for
desired picture size.
WELLS GARDNER
COMPOSITE VIDEO BET-UP INSTRUCTIONS
3. PICTURE CENTERING
If the video is off center verti·
caily, turn the vertical raster
position control to move the
raster up or down. If the video is
off center horizontally, adjust
the horizontal video position
{Horiz. Centering) control to
center the picture. If any addi·
tional horizontal positioning is
required, move the horizontal
raster position adjustment
jumper {Horiz. Raster Shift) to
the left or the right position.
APC
4. VERTICAL DAMPING
Adjustment of this control is
required only if the monitor is
being used with a game in which
the top several raster lines are
visible on the screen. Adjust the
vertical damping control for
uniform spacing of the top raster
lines.
TINT
COLOR
CONTRAST
LUM. BIAS