Star Tech Journal

Issue: 1982-December - Vol 4 Issue 10

12
STAR*TEyH JOURNAL/DECEMBER 1982
(Gott/ieb 's "Q•BERT" Continued)
H&R Enterprises,
a division of
Famlee Electronics, Inc.
has ...
Over
2 Million
Integrated
Circuits
ALL IN STOCK . ..
TRANSISTORS AND DIODES TOO!
H&R
ENTERpRiSES
9025 Eton Avenue
Canoga Park, CA
91304
21}/709-4~40
TELEX: 6622~8
DOMESTIC
& EXPORT!
TIRED OF
,__...__ WAITING
FOR YOUR
BOARDS?
HOW MANY TIMES ARE YOU WILLING TO
HEAR, "YOUR BOARDS ARE NOT READY
YET'? MAKE THE CHANGE - COME SEE
US AND GET RESULTS - NOT EXCUSES!
"FLAT RATE"
prices for all repair and exchanges
on printed circuit boards:
In an effort to streamline the processing and speed up our
printed circuit board repair/exchange program, we have
established a "flat rate" price for all repair and exchanges
(Monitor PC Boards not included).
These rates will NOT apply: (1) If board has been
brutalized or damaged by the customer. Missing components
will be charged separately. (2) Two sets of boards in metal
cases.
"Flat rate" charges will apply in ALL other cases.
LOGIC,CPU,MPU .. . $60
SCORE DISPLAY . .. $41
POWER SUPPLY ... .. 41
LAMP DRIVER . ... .. 32
SOLENOID DRIVER ... 41
TRANSFORMER .. . .. 34
SOUND/AUDIO .... . . 41
ATARI VECTOR
ATARI AUXILIARY .. . 70
GENERATOR. ..... 70
Fastest Service ... Quantity Discounts ... Call Now!
FRISCO ELECTRONICS
& VENDING INC.
3299-19th Stree~ San Francisco, CA 94103
(Authorized Atari Service Center)
OPEN 24 HOURS!
DAY: (415) 648-5466 NIGHT: (415)359-5641
SOUND ADJUSTMENTS - As always, there
is an 8-position dip switch located on the sound/
speech board. Apparently there are no options
adjustable with these switches since there is no
mention of this dip switch at all in the game
manual. These switches must have some effect,
however, since toggling all switches in the "off''
position results in no sound or speech. Games
from the factory are shipped with all switches in
the "on" position (and this is the way they should
be left).
The potentiometers located directly on the
sound/speech board have been factory-sealed and
usually no adjustments are necessary. Proper
calibration requires an oscilloscope.
VOLUME CONTROL-A single volume control
pot is mounted on the service panel assembly
(counter-clockwise decreases volume, clockwise
increases it).
For detailed information on all options and all
elements of the self test, see the "Q•BERT"
production game manual.
MISCELLANEOUS INFO
Monitor - Color rastor-scan Wells-Gardner
Model 19K4951
Joystick - 4-way Suzo Rotterdam
Coin door - Coin Controls Mfg.
Coin rejectors - Coin Controls Mfg.
Knocker coil - AS 195
Slam-switch - None used
1- and 2-player start switches - No lamps mounted
in them (i.e. Do not flash indicating credit.)
NOTES
1. Joystick employs micro, not blade switches
(it's not a Wico).
2. Coin door is the type with two small doors
mounted one on top of the other ( same as the
ones on recent Atari videos).
3. Knocker coil - Yes, a knocker coil! ( At least
there isn't a game over relay). This one is fused
and will momentarily energize on power up.
During game play, this coil energizes when the
player-controlled Q•BERT or Coily snake
jumps off the edge of the pyramid. An option
setting (switch 6 kicker on/off) can disable this
coil during game play.
CONNECTORS - There is only a single 60-pin
edge connector mounted on the main logic board.
Both voltages(+S and +11.5) enter this connector
as well as all inputs ( coin door and control panel
switches) and outputs (video and sync, sound
board enables, and coin counter). There are four
connectors on the power supply, and a single
connector for the sound/speech board.
Board
Main Logic
Connector&
No. of Pins
Al-Pl
Power Supply A3-Pl
Function
60 All inputs &
outputs
4 Unregulated
11.Svdc input
Power Supply A3-P2
Power Supply A3-P3
10 AC inputs
Power Supply A3-P4
Sound Board A6-Pl
16 +Svdc output
12 Enables, power
in, audio out
7
+12,+20,+30
-12 output
NOTES:
1. All connectors are keyed.
2. Wire color code is the same as the one used in
Gottlieb pinball.
3. Male connectors codes AxPx, female con-
nectors AxJx.
4. A3-Pl is a 4-pin rectangularmolex connector,
very similar ( slightly bigger pins) to the one
used on Atari" Asteroid" and "Lunar Lander"
audio regulator boards, the one that always
broke off and was later replaced by a more
stable square type in " Asteroids Deluxe").
CONCLUSION/COMMENTS
Writing the new system preview for a new game
employing a completely new system would normally
be very difficult. Never having serviced these
particular boards or games means there is nothing
to fall back on. With "Q•BERT", however, I had
the feeling I had seen it all before. A transformer
assembly with a bridge rectifier and large filter cap
(like Atari), the boards mounted on a hinged back
door ( like Tai to), a detailed self test consisting of a
" menu" of various sub tests (like Midway's MCR
II board system). This is not to say that this is not
an original design. There are just so many ways to
put together a video game, and certain parts have
to be the same from manufacturer to manufac-
turer. Quite the contrary, this design is very unique
- (who else uses the Intel 8088?) and cost
Gottlieb a great deal of time and money to
engineer. What the similarities do show is that
Gottlieb, having been the last major manufacturer
to enter the video marketplace, was given the
opportunity to examine all existing video game
designs and, much to their credit, they used this
opportunity to select those areas which they felt
were most important in regard to cost, reliability,
and servicing. The standardization that many
operators are asking for certainly exists within
most manufacturers' own designs (Williams'
"Defender" system, Taito's "Qix" board system,
and Atari - whose boards and especially cabinet
design are basically the same from game to game).
These manufacturers' individual designs (as
"Q•BERT" illustrates) are heading in the same
general direction of standarization. I'm sure Todd
Erickson will be happy with "Q•BERT's" Coin
Controls coin door and "Distributions" category
of self test ( which affords the operator the ability to
customize the options according to that individual
location's skill level). However, any technician
whose preference is for Wico joysticks and quick
type control panel fasteners will be disappointed
("Q•BERT" employs a Suzo Rotterdamjoystick
and wing nuts to hold the control panel down).
As I sit here reading "Stark Tech Journal's 3rd
Annual Reader Survey" ( Oct. '82), I realize that it
is impossible to please all the people (game players,
distributors, operators, and technicians) all the
time. It is my only hope that the manufacturers
(like Gottlieb has with "Q•BERT") never stop
trying.
One final note - The game manual in
"Q•BERT" is excellent, especially the actual
photographs illustrating the cabinet and various
sub assemblies. A complete set of easy-to-read
schematics (particularly the "Primary Power/
Interconnection Diagram") is included. There is
also a listing for most parts, including those on the
printed circuit boards. Over the past year, all of
Gottlieb's game manuals and schematics have
improved greatly.
13
STAR*TECH JOURNAL/DECEMBER 1982
TAITO
"GRAND CHAMPION" STEERING WHEEL MOD
Game: Grand Champion
Subject: Steering wheel wobbles after
some use.
Solution: Add screws to the hub (A).
Parts
QTY.
3
3
l
Needed:
DESCRIPTION PART NUMBER
M4 X 10 Screw
885
StarLockWasher
8845
Space Washer
8822
Procedure:
Please refer to Figure l while reading the
following:
In order to determine if this procedure is
necessary, remove the control panel and test
to see if hub (A) item 11 is able to move in
any direction. If it does move, the following
procedure needs to be used in order to avoid
unnecessary wear of the shaft.
In order to install the missing screws in
hub (A) you must first disconnect the photo
sensor PCB plug and move it out of the way.
Loosen and take off the four flange nuts
(item 20) holding down the sensor board
bracket. Upon removing the sensor board
bracket, the pulse cam and gear (items 13
and 14) should come loose along with it.
Loosen and remove the self locking nut
(item 21) holding down the steering shaft.
After removing the locking nut, remove the
spring washer (item 22), the gear (item 23),
and the space washer (item 24). The steering
wheel and shaft is loose now and can be
pulled out of the control panel.
Next, remove the four outer hub base
nuts with their adjoining washers. Also,
remove the earth ground strap closest to the
shifter. Loosen and remove the four flange
nuts (item 10) on the hub base. Now the hub
base (item 9) and hub (A) (item 11)
can be removed from the control panel.
part of the shaft. On the back side of the
shaft there should be one spacer washer
(item 24) affixed to the back of the shaft.
Sometimes two space washers must be used.
Each steering wheel will vary due to the
wear. If two washers are used, the steering
wheel may seem tight at first, but loosening
the self locking nut ( item 21) an eighth of a
tum at a time will loosen the steering wheel.
When assembling the pulse cam and gear
in the hold provided in the hub (A), proper
care should also be taken in that the pulse
cam is in the middle of the photo sensor, not
touching either of the edges. This can be
done by adjusting the sensor board bracket
( item l 7) and tightening the flange nut ( item
20), making sure the gear is perpendicular to
hub (A) (item 11).
*A note of care is advised in aqjoining the
hub base to the control panel. The hole for
the pulse cam and gear should be put
closest to the gear shifter, as the plug for
the photo sensor will not reach otherwise.
Adjoin missing pan head screws (item 7)
and star washing (item 6) to the hub (A).•
When reassembling the steering wheel
shaft to the control panel there must be two
spacer washers (item 28) affixed to the front
FIGURE 1 - Steering Assembly
ITEM
1
2
3
4
5
6
7
8
9
10
11
12
TAITO PART NO.
8814
8818
8816
882
882
390027
885
305026
886
887
888
8810
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
8826
8825
8830
305026
8829
8828
8827
352053
8824
8821
8823
8822
883
8812
8813
8822
8820
8821
8819
8817
8815
884
DESCRIPTION
Steering Cap
Steering Wheel
Retaining Plate Assembly
Pan HD Screw M6X25
Hub Base (B)
Star Washer
Pan HD Screw M4X10
Pan HD Screw M4X8
Hub Base (A)
Flange Nut M6
Hub (A)
Flange Bushing 80F-0406
(Oiless)
Gear
Pulse Cam
Photo Sensor PCB Assembly
Pan HD Screw M3X6
Sensor Board Bracket
Self Lock Nut M4
Spring Washer 4M
Flange Nut M4
Self Lock Nut M6
Spring Washer 6M
Gear
Spacer
Hub(B)
Steering Cover
C-Sink HD Screw 3.50X10
Spacer
Cap Bolt M6X30
Spring Washer 6M
Steering Shaft
C·Sink HD SelfTap M4X10-2
Decoration Plate
Flange Bushing 80F-1512
(Oiless)
30-
6
©
I
29 ---1
28 ~
21..____
f '
I
~

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