Star Tech Journal

Issue: 1987-June - Vol 9 Issue 4

June 1987 (6)
STAR*TECH Journal
Ardac MBA BIii Acceptor Harness
Strain Relief Caution
By
Stan Gossard
Ardac Incorporated
Eastlake, Ohio
our internal quality assurance has
isolated a potential problem with MBA.
acceptor harnesses manufactured and
shipped from March 18th through April
14th, 1987.
IDENI'IFIC.ATION
Systems having serial nunbers of 03701184
through 04702639 are suspect.
'Ibis is the MBA. system harness that goes
between the bill acceptor and the control
box.
PROBLEM
In MBA. system acceptor harnesses
manufactured during the period nentioned
above, the staking of the terminals to the
wires resulted in good electrical
connections, but in soire cases, the wire
does not have adequate strain relief.
'lbe problem could becoire apparent through
handling. Because of the inadequate strain
relief, it is possible that a wire may
pull out of its terminal men atterrpting
to disconnect the acceptor harness from
the control box.
Merit Counter-top Games
+12Vdc Supply
By
Sam Cross
Godwin Distributing Co.
North Little Rock, Arkansas
PROBLEM: I have fixed many of these garnes
with the same problem. It roost always
shows up in the +12vdc either rising too
high or dropping too low.
SYMiavl.S: If it drops low, intermittently
the game will reset.
If too high it can cause board damage.
FIX: '!he solution is to replace the 7812
regulator in the supply and resolder the
burnt connections around, and associated
with, the 7812 or complete replacenent of
the supply.
Wl'E: At the sarne tiire it is good to check
to see if the ventilation fan is clear of
excessive dirt accumulation and is
working, as a good deal of heat is
generated in this small cabinet.
CRANE MERCHANDISE
~TION
We recormend that these bill acceptor
harnesses be replaced if the MBA. systems
in stock are easily accessible. A recall
of bill acceptor harnesses installed in
working vendors is not required.
aJRRENI' ~ESSES MARKED
In order to avoid confusing current
production bill acceptor harnesses with
previously manufactured harnesses, we are
placing a blue mark on the control box end
of the acceptor harness.
Please clearly mark any returns of suspect
acceptor harnesses as "defective."
AVAIIABILITY
Irmrediate shiµnents of known good
harnesses are available. Please contact
Sharon Taylor or key Mastalski (Sales
Departnent) 216/946-3000.
prfzes,
DIFFERENT • UNIQUE • EXCITING
IMMEDIATE DELIVERY
Call Toll Free:
(800) 992-2388, (800) 992-6577 (in California)
1590 Sunland Lane, Costa Mesa, CA 92626
June 1987 (7)
STAR*TECH Journal
BIG CHOICE Attraction Lights
Modification
By Eugene Riddell
Jolly Ti.Ire
Dover, Delaware
USE A LIGHI' DIMMER
To increase the life expectancy of the
attraction lights on .the BIG QDICE
cranes, install a light dirnner available
at Radio Shack (Part #61-2699).
This unit is rated at 600 watts and even
has an on/off switch. 'Ihe cost is $6.95.
Ql is an internally triggered triac with a
diac rrounted inside. It is available from
DIGI-KEY (Part #Q6015LT) at a cost of
$2.98. 'Ihe entire unit should cost about
$5.00 to build and even less depending on
your junkbox.
It's also a great little unit to have on
your workbench to regulate the temperature
of your soldering iron and gives you the
ability to bring up line voltage slowly
when working on monitors.
cur BIG CHOICE crane here has 32 bulbs
each rated at 10 watts (320 watts total)
so we are well within the limits of the
power rating. Installation takes about
five minutes. Reduce the filament
brightness about 15 to 20%. Refer to
Figure 1.
*
1 - - - - - - - + ,.,,.,, ,-
0 .... , i.,,.l'I..
PRE-PAK
CRANE PLUSH
n..,_ ....
!SATISFACTION GUARANTEED!
If not completely satisfied, return merchandise for a full refund.
For the more energetic techs out there who
want to "roll their own," the circuit in
Figure 2 is very easy to build and is
rated at about 1500 watts.
THE ONLY PRE-PAK SUPPLIER WITH THIS
WRITTEN GUARANTEE.






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