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.
