Williams Electronics Defender 16P-3001-103 R-T User manual

16P-3001-103 R-T
July, 1981
This booklet provides operation, auditing, adjustment, and diagnostics for DEFENDER.
POWER TURN ON
With power first applied, a sound is produced, general illumination comes on, and random
patterns appear on the CRT as the game sequences through RAM, ROM, and battery checks.
The game then comes up in game over. Messages are displayed for RAM or ROM failures;
refer to Power Up and Reset RAM/ROM Tests. If the game comes up in Bookkeeping, turn the
game OFF and back ON.
a. If the game now sequences through the tests and then comes up in game over, the
bookkeeping totals have been reset to zero.
b. If the game still comes up in bookkeeping, open coin door and turn the game OFF and
ON. The game will now sequence through the tests and come up in bookkeeping. This is an
indication of battery failure and the game has reverted to factory settings. To return to
game over:
1. Set switch to MANUAL-DOWN.
2. Depress ADVANCE to display Function 28.
3. Set switch to AUTO-UP and depress ADVANCE.
GAME OPERATION
GAME START -Insert coins -credits are displayed on CRT. Press 1 or 2-player start.
PLAYER CONTROLS
UP-DOWN Switch –maneuvers player ship.
REVERSE Switch -reverses player ship direction.
THRUST Switch -controls player ship speed.
FIRE Switch -activates laser gun.
HYPERSPACE Switch -warps rocket to another quadrant, danger of possible annihilation.
SMART BOMB Switch -destroys all alien ships on screen. A maximum of 3* per play.
GAME PLAY
Destroy alien ships and missiles. Rescue humanoids, pick them up, and return to surface.
Destroy all enemy ships for humanoid bonus and additional alien waves. Bonus ships and
Smart Bombs provided every 10,000* points.
HIGH SCORE SIGNATURE
Use UP/DOWN to select letters and FIRE button to lock in letter.
CREDITS IN GAME
Twenty or less credits are retained in memory after power down. To remove credits from
game post 21 or more credits and depress ADVANCE in AUTO-UP two times in succession.
Credits are also removed any time Function 28 is changed.
* Indicates adjustable features.

BOOKKEEPING AND EVALUATION TOTALS (Functions 1-7)
1. In game over mode, set switch to AUTO-UP and depress ADVANCE. The CRT indicates
Function 1 and total left chute coins.
2. Records audit totals and depress ADVANCE for functions 1-7. To review a total that
has been advanced past, set switch to MANUAL-DOWN and depress ADVANCE. Functions are
displayed one at a time as follows:
Function Tota1* Description
10(Total) COINS LEFT
20(Total) COINS CENTRE
30(Total) COINS RIGHT
40TOTAL PAID (Games)
50(Total Bonus) SHIPS WON
60TOTAL (Play) TIME (Minutes)
70TOTAL SHIPS (Played)
* Factory Settings
3. Operate ADVANCE to display Function 28, SPECIAL FUNCTION. From Function 28 you can
return to game over or zero audit totals and return to game over.
4. With switch set to AUTO-UP, perform a. or b. as desired.
a. To return to game over depress ADVANCE.
b. To zero audit totals and return to game over, operate HIGH SCORE RESET to
indicate "35" on CRT for Function 28 and then depress ADVANCE.
GAME ADJUSTMENTS (Functions 8-21)
l. In game over mode set switch to AUTO-UP and depress ADVANCE. The CRT indicates
Function 1 and total left chute coins.
2. To raise Function number on CRT, operate ADVANCE pushbutton with switch set to
AUTO-UP. To lower Function number operate ADVANCE with it set to MANUAL-DOWN.
3. With desired Function indicated, raise adjustment value by operating HIGH SCORE
RESET with switch set to AUTO-UP; 1ower value by operating HIGH SCORE RESET with it set
to MANUAL-DOWN. Value left on CRT is new setting. For values, see below and, for pricing,
Table l. Function Tota1* Description
810,000 BONUS SHIP LEVEL(O=No Bonus ships)
93SHIPS PER GAME
10 3COINAGE SELECT
11 1LEFT COIN MULT
12 4CENTER COIN MULT
13 1RIGHT COIN MULT
14 1COINS FOR CREDIT
15 0COINS FOR BONUS
16 0MINIMUM COINS
17 0FREE PLAY (Set to 1 for Free Play)
18 5STARTING DIFFICULTY: O=LIB; 5=MOD; 10=CONS
19 15 PROGRESSIVE WAVE DIFFICULTY LIMIT, 5-30
e.g. 05=LIB; 15=MOD; 25=CONS
20 1NOT USED
21 5PLANET RESTORE WAVE NUMBER
22 0NOT USED
23 0NOT USED
24 0NOT USED
25 0NOT USED
26 0NOT USED
27 0NOT USED
28 0SPECIAL FUNCTION
* Factory Settings
4. Repeat steps 2 and 3 until all desired adjustments have been made.
5. Operate ADVANCE until 28 0 SPECIAL FUNCTION is indicated on CRT. From Function 28
you can return to game over or restore factory setting. Perform step 6 or 7 as desired.
6. To return to game over, depress ADVANCE with switch set to AUTO-UP.

FUNCTION
COIN DOOR MECHANISM CREDITS 10 11 12 13 14 15 16
All USA Variants ˜1/25¢, 5/$1
˜2/50¢, 5/$1
l1/25¢, 4/$1
˜2/50¢, 4/$1
˜1/50¢, 3/$1, 4/$1.25
˜1/50¢, 3/$1, 7/$2
l1/50¢, 3/$1, 6/$2
l1/50¢
00
00
03
00
00
00
01
05
01
01
01
01
03
12
01
01
04
04
04
04
12
48
04
04
01
01
01
01
03
12
01
01
01
01
01
01
04
14
02
02
04
04
00
00
15
96
04
00
00
02
00
02
00
24
00
00
1DM, 5DM
20-Cent, 50-Cent
l1/1DM, 6/5DM
˜1/20¢, 3/50¢02 00 06 01 00 00 01 01 01 02 00 00 00 00
1 Franc, 5 Franc l1/2F, 3/5F only 04 01 16 06 02 00 00
25 Cent,
1 Guilder
l1/25¢, 4/1G
˜1/25¢, 5/1G 06 00 01 01 00 00 04 04 01 01 00 04 00 00
5 Franc,
10 Franc
l1/5F, 2/10F
l1/10F 07 08 01 01 00 00 02 02 01 02 00 00 00 00
1 Franc, 2 Franc l2/1F 5/2F 02 00 04 01 04 00 00
100 Lire, 200 Lire ˜1/200 Lire 00 01 00 02 02 00 00
Twin Coin l1/1 Coin
l1/2 Coins
˜1/3 Coins, 2 5 Coins
03
05
00
01
01
02
04
04
00
01
01
02
01
02
05
00
00
00
00
00
00
1 Unit, 5 Unit l1/2, 3/5
˜1/1, 5/5
˜1/3, 2/5
04
00
00
01
01
02
00
00
00
06
05
10
02
01
05
00
00
00
00
00
00
lIndicates standard price settings by adjusting only Function 10. For other price
settings, set Function 10 to 00 and set. Functions 11 through 16 to the values
indicated in the chart.
Table 1. Standard and Custom Price Settings
7. To restore factory settings and zero audit totals:
a. Operate HIGH SCORE RESET in AUTO-UP to indicate "45" on CRT for Function 28.
b. Depress ADVANCE. The game returns to Audit Function l.
c. Set switch to MANUAL-DOWN and depress ADVANCE to indicate Function 28 on the CRT.
d. Set switch to AUTO-UP and depress ADVANCE.
RESETTING HIGH SCORE SIGNATURES
To reset the “TODAYS GREATEST” signatures to factory settings, turn game OFF and ON
or depress HIGH SCORE RESET in game over mode. To also reset “ALL TIME GREATEST”
signatures to factory settings, set Function 28 to 15 and depress ADVANCE in AUTO-
UP.
POWER-UP AND RESET RAM/ROM TESTS
Test initiated at power turn-on and after depressing RESET pushbutton on CPU/Video Board.
RESULT CRT
INDICATION LED INDICATION CORRECTIVE ACTION
PASS INITIAL
TESTS OK 4 LEDs blink twice -
FAIL RAM RAM TEST
FAILED
l¡¡l
1st and 4th
LED’s light
FAIL ROM ROM TEST
FAILED None
Depress ADVANCE in
MANUAL-DOWN while
failure message is
displayed to enter
Diagnostics.

ROM DIAGNOSTICS –TEST 1
From game over, depress ADVANCE IN MANUAL-DOWN.
RESULT CRT
INDICATION LED INDICATION CORRECTIVE ACTION
PASS ALL ROMS OK
¡l¡¡
2nd LED blinks
twice. None
FAIL ROM FAILURE x¡l¡¡
2nd LED lights.
Replace ICx on ROM Board
or depress ADVANCE in
MANUAL-DOWN; Replace:
(x=ROM No 1–12) Chip Indicated:
¡¡¡l
¡¡l¡
¡¡ll
l¡¡¡
l¡¡l
l¡l¡
l¡ll
¡l¡¡
¡l¡l
¡ll¡
¡lll
ll¡¡
IC1
IC2
IC3
IC4
IC5
IC6
IC7
IC8
IC9
IC10
IC11
IC12
RAM DIAGNOSTICS –TEST 2
From ROM Diagnostics depress ADVANCE in AUTO-UP.
RESULT CRT
INDICATION LED INDICATION CORRECTIVE ACTION
TESTING Random
Pattern -Depress ADVANCE in AUTO to bypass test.
PASS ALL RAMS OK
l¡¡¡
1st LED blinks
twice.
-
FAIL RAM FAILURE xy
l¡¡¡
1st LED lights.
Replace RAM (see
following) or depress
ADVANCE in MANUAL-DOWN
(x=Bank,
y=Chip No) Bank Indicated:
¡l¡¡ = 1
l¡¡¡ = 2
¡¡l¡= 3
Depress ADVANCE in
MANUAL-DOWN
Chip Indicated:
¡¡¡l= 1
¡¡l¡= 2
¡¡ll = 3
l¡¡¡ = 4
l¡¡l= 5
l¡l¡= 6
l¡ll = 7
¡l¡¡ = 8
Replace in bank:
1 2 3
1R 2R 3R
1S 2S 3S
1T 2T 3T
1U 2U 3U
1W 2W 3W
1X 2X 3X
1Y 2Y 3Y
1Z 2Z 3Z

CMOS RAM DIAGNOSTICS –TEST 3
From RAM Diagnostics depress ADVANCE in AUTO-UP.
RESULT CRT
INDICATION LED INDICATION FAULTY AREA
PASS CMOS RAM TEST
PASSED
¡¡l¡
3rd LED blinks
twice.
-
FAIL CMOS RAM FAILURE
¡¡l¡
3rd LED lights.
CMOS RAM 1E memory
protect gates 4J, 6H, or
address decoder 4K, 5P.
CMOS
INTERLOCK
FAILURE
¡¡l¡
3rd LED lights.
Coin door interlock,
Memory protect gates 5B,
6H,4J, OR CMOS RAM 1E
COLOUR RAM TEST –TEST 4
From CMOS RAM test depress ADVANCE in AUTO-UP.
FAULTCOLOUR
SEQUENCES RAM 2C RAM 1C
1 LIGHT RED
2 RED
3 DARK RED
Band of red
intensity variance
or washout
Band of magenta
4 LIGHT GREEN
5 GREEN
6 DARK GREEN
Band of yellow Band of cyan
7 LIGHT BLUE
8 BLUE
9 DARK BLUE
Band of magenta Band of blue
intensity variance
or washout
4 LIGHT GREEN Band of green Band of dark green
or washout
5 GREEN Band of light green Band of faint
green, Band of
darker green
6 DARK GREEN Band of washout
CRT SEQUENCES THROUGH 8
COLOURS, 2 SECONDS EACH
VERTICAL BAND INDICATES
COLOUR RAM FAULT.
¡¡¡l
4TH LED REMAINS LIT
DURING TEST Note that a blank sequence or two sequences with same
shade indicate 2C or 1C RAM or color analogue circuit
faulty.
Tests 5 and 7 provide sequential subtests. To stop automatic cycling set switch to
MANUAL/DOWN. Depress ADVANCE in MANUAL-DOWN to step through subtests.
SOUND TEST –TEST 5
From Color RAM test, depress ADVANCE in AUTO-UP.
Test sequences sounds 1 through 31, skipping 19, 27, and 28.
Missing Check
12P4/10P3 Pin 3
22P4/lOP3 Pin 2
42P4/10P3 Pin 5
82P4/10P3 Pin 4
16 2P4/10P3 Pin 7
All Perform Sound Board Diagnostics

SWITCH TEST –TEST 6
CRT indicates AUTO-UP closed and any stuck switches. Set switch to MANUAL-DOWN and
clear any stuck switches. CRT should indicate no switches closed. Operate switches
and check for display of switch name.
Coin Door Player Panel
ADVANCE UP
HIGH SCORE RESET DOWN
LEFT COIN REVERSE
CENTER COIN1-PLAYER START
RIGHT COIN 2-PLAYER START
HYPERSPACE
SMART BOMB
THRUST
FIRE
MONITOR SET UP TEST PATTERNS -TEST 7
From Switch Test depress ADVANCE in AUTO-UP.
Pattern Alignment/Adjustment
CROSS HATCH Vertical and Horizontal Linearity, Convergence, Focus
RED
GREEN
BLUE
COLOUR BARS
}
} Color Purity
}
12345678
1 = RED
2 = GREEN
3 = BLUE
4 = WHITE
5 = BLACK
6 = YELLOW
7 = CYAN
8 = MAGENTA
The color bar pattern is also analyzed to detect color RAM faults. If Color RAM Test 4
indicates no faults, a double-width band, half width bands, transposition or missing
bands indicates a fault in 2E, 1C, or 2C chips.
To return to game over:
l. Depress ADVANCE in AUTO-UP. Audit function 1 is displayed.
2. Set switch to MANUAL-DOWN and depress ADVANCE. Special Adjustment Function 28 is
displayed.
3. Set switch to AUTO-UP and depress ADVANCE.
INITIATING AUTO-CYCLE MODE
1. Set switch to AUTO-UP and depress ADVANCE. Audit Function 1 is indicated on CRT.
2. Set switch to MANUAL-DOWN and depress ADVANCE to indicate SPECIAL FUNCTION 28 on
CRT.
3. Set switch to AUTO-UP and operate HIGH SCORE RESET to indicate 15 on CRT for
Function 28.
4. Depress ADVANCE. The game sequences through ROM, RAM, Sound tests and monitor test
patterns.
5. To exit the AUTO-CYCLE mode, depress ADVANCE in AUTO-UP.

SOUND BOARD DIAGNOSTICS
Depress DIAGNOSTIC pushbutton on the bottom of the Sound Board. A check is made of the
Sound ROM and sounds are produced if the check is good. If sounds are produced but not
produced in Audio Test 5 check for ROM board PIA outputs on Sound Board inputs that is
stuck low. If no sound is produced either the Sound ROM, input power, or other Sound
Board circuitry is faulty.
"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."