Williams Sinistar Instructions Service Manual

							SOUND BOARD DIAGNOSTICS
SYMPTOM TEST & PROCEDURES
  CHECK ROM BOARD OUTPUTS
(1)
 If you hear game sounds, disconnect and reconnect sound board connector 10P3/J3.
(2)
 You Should hear one or more game sounds.  If so put the game in Diagnostic Mode
Test 4 and proceed with this checkbox.  If not go ahead to POWER SUPPLY checkbox
below.
TEST TOOL CONDTION & REMEDY
ROM board connector
2P4/J4-2 to 7logic probe (game on and
in test 4)•  PULSING - Repair cable to
sound board.
•  ANY LOW - Replace jack or foil,
proceed.
9C DIP resistors 2 to 8 VOM - Reading ohms
(game off)•  ALL 4.7K - Proceed.
•  ANY OPEN - replace 9C.
C40-53 VOM - Reading ohms
(game off)•  ALL OK - Proceed.
•  ANY SHORTED - replace bad.
MISSING SOUNDS:
NO SOUND--STEP 2
(ASSUMPTION
OFF-BOARD
FAILURE)
8C-10 to 15 (PIA) logic probe (game on and
in test 4)•  PULSING - Proceed.
•  SOME LOW Replace 8C.
NO SOUND
(ASSUMPTION:
POWER SECTION
FAILURE)  CHECK ON-BOARD POWER SUPPLY
(1)
 With power off test for fuse continuity at F1 and F2.
(2)
 With power on check for +12v unregulated DC at TP1 and pin 5 of IC1.
(3)
 Now check for +5v regulated DC between TP4 and TP3.  If voltages are absent or low
turn off game and lift one pin of filter capacitors C25, C26 and C27.
(4)
 Check each with ohmmeter for possible short circuits.
(5)
 If capacitors are good and unregulated voltages test okay but you’re missing +5v,
replace regulator chip (IC8).
STILL NO SOUND
(ASSUMPTION:
AUDIO SECTION
FAILURE)  CHECK AUDIO (ANALOG) SECTION
(1)
 Turn power on; turn up volume control.  Momentarily place powered-up AC soldering
pencil on final amplifiers input pin (IC1, pin 1 or 10P4, pin 2)  If you hear low hum, audio
IC, volume pot and speaker are okay.
(2)
 Repeat test at Q2 emitter.  If you hear hum, analogue section is okay.  Step (1) will also
work if you simply touch amplifiers input pin
.  However output level of hum will be much
lower than with soldering iron.  DO NOT use a soldering pencil over 40 watts.  Cordless
models will NOT work here.
MISSING SOUNDS;
NO SOUND
(ASSUMPTION:
DIGITAL
FAILURE)  CHECK SOUND ROM 12 AND RELATED CIRCUITRY
(1)
 Turn power on.
(2)
 If you have no game sounds but power supply tests show normal voltages and no ripple
on +5v, check crystal clock circuit.  Using DVM or logic probe, test for pulsing AC across
crystal.  If clock signal’s absent replace crystal and associated capacitors.
(3)
 Turn off power.
(4)
 Swap sound ROM (IC12) and microprocessor chip (IC9) with known-good chips.
(5)
 Power up and test Sound Board after each swap by pushing DIAGNOSTIC button. 
						

							CMOS RAM Data
Test Protocol
The first sub-test of the CMOS
RAM data is that of the
ATTRACT MODE MESSAGE
checksum.  If the test does not
pass, the factory ATTRACT
MODE MESSAGE is restored.
Next, the game adjustments are
checked and restored to factory
settings if an error is found.  If
game adjustments are found
intact, the high score table is
checked for any bad entries.  Bad
entries are replaced with a score
of 4,000 points and no initials.  If
all entries check, the game
returns to the Game Over Mode.
If game adjustments are restored
to factory settings, the AUDIT
TOTALS are checked.  If 5 or
more audit digits are other than
0-9 (that is hexadecimal A
through F) all audit totals are
cleared.  This is followed by a
check of the high score table and
the table is reset to factory
settings if errors are found.
Finally, game adjustments are
rechecked and either OPEN
COIN DOOR or FACTORY
SETTINGS RESTORED is
displayed.  With the former, open
the coin door and turn the game
OFF and ON and then FACTORY
SETTINGS RESTORED will be
displayed.  Return to game over
by depressing the ADVANCE
pushbutton or by turning the
game OFF and ON a second
time.
POWER  ON
ATTRACT MODE
MESSAGE?
RESTORE
FACTORY
MESSAGE
GAME
ADJUSTMENTS?
RESTORE
FACTORY
SETTINGS
AUDITS?
CLEAR
AUDITS
HIGH
SCORE
TABLE?
RESET HIGH
SCORE TABLE
TO FACOTRY
SETTINGS
GAME
ADJUSTMENTS?
OPEN COIN DOOR
DISPLAYED
OPEN COIN
DOOR
POWER OFF
AND ON
FACTORY
SETTINGS
RESTORED
DISPLAYED
POWER ON
AND OFF
HIGH
SCORE
ENTRIES?
BAD ENTRIES
REPLACED WITH
4,000 AND  NO
INITIALS
INITIAL TESTS
INDICATE ALL
SYSTEMS GO
DISPLAYED
1
11
PASS
FAIL
PASS
FAIL
PASS
FAIL
PASS
FAIL
5 OR MORE HEX A-F
PASS
FAIL
PASS
FAIL 
						

							CHAPTER 4  Parts Information 
						

							1 
						

							3 
						

							5
UPRIGHT:
Weight
270lbs (122.5 Kg.) uncrated
290lbs (131.5 Kg.) crated
COCKPIT:
Weight
342lbs (155 Kg.) uncrated
402lbs (182.5 Kg.) crated
**Patent Pending
Specifications subject to change without notice.
Warning - This equipment generates, uses, and can radiate radio
frequency energy and if not installed and used in accordance with
the instructions manual, may cause interference to radio
communications.  As temporarily permitted by regulation it has not
been tested for compliance pursuant to Subpart J of Part 15 of FCC
Rules, which are designed to provide reasonable protection against
such interference.  Operation of this equipment in a residential area
is likely to cause interference in which case the user at his own
expense will be required to take whatever measures may be required
to correct the interference.
POWER REQUIREMENTS
115/230v AC Nominal, 50/60 Hz
@1.7/0.85A 192W
(20A surge for one cycle at power turn on)
Normal Line = 98-126v AC
196-252v AC
High Line*  = 98-126v AC
196-252v AC
Low Line*  = 98-126v AC
196-252v AC
*Transformer Jumpers Required.
See Service Manual.
ENVIRONMENT
Operating Temperature
00 to +450C ambient
(+320 to +1130F)
Storage Temperature
-40
0 to +650C ambient
(-400 to +1490F)
90% RH at 400 (1040F), non-condensing
MONITOR
19 Colour Raster
non-interlaced
UL, CSA & DHHS Approved
VIDEO SYSYTEM**
256 Colours, 340 x 240 PIXEL Resolution
6809E Microprocessor
ROM: 44K BYTES
Video and Scratch RAM: 50 K BYTES
CMOS RAM: 1Kx4
SPECIAL RAM 2K BYTES
SOUND SYSTEM**
6808 Microprocessor
ROM: 24K BYTES (cockpit)
U.S. Patent No. 4272649
SPEECH SYSTEM**
Digital to Analogue
CVSD System
JOYSTICK**
Optical Sensing
49 discrete directions and degrees of movement
(6 separate speeds in 8 directions plus
centre off position)
SERVICE
For the back-up that keeps you out-front,
Call W illiams toll-free at 800/621-1253.
In Illinos, call toll-free at 800/572-
1324
3401 N. California Av., Chicago, IL 60618
(312) 267-2240, Telex 253095
NOTICE: SINISTAR is a trademark of Williams Electronics, Inc.
© 1983, WILLIAMS ELECTRONICS , INC