Magnavox ODYSSEY BG7500 Service Manual

Magnav,c,~
SERVICE
MANUAL
THE MAGNAVOX COMPANY • SERVICE DEPARTMENT
FOAT WAYNE . INCi.A.NA
Manual No. 6504
File: Volume 12
Miscellaneous Seccion
First Issue : Oc.tober, 1976
BG7500 ODYSSEY
Scanned by Sly DC (2018)
GENERAL INFORMATION
The BG7500 can be powered by either 6 "C" Cells or an
optional AC to DC 9 volt adaptor.
The BG7500 features games of Hockey, Tennis and Smash,
and as an extra challenge has switchable skill levels of
Novice, Intermediate and Expert which automatically
adjusts the player size, speed of the ball and deflection of
the ball.
Automatic features include "on-screen" scoring which
awards a point to the appropriate player or team each time
the ball leaves the playing area. Automatic serve will return
the ball into play from the side that was awarded the point.
After either side has scored 15 points the ball will continue
to be served but neither player will be able to return it.
During play a different audio tone is generated each time the
ball hits a player, a wall, or a point is scored. No provisions
are made to turn the sound on or off.
SERVICE ADJUSTMENTS
2 MHz Oscillator Adjustment
1. Connect a frequency counter to Pin 17 of IC1 and adjust
C4 for 2.01 MHz± 1%.
Channel 3 and 4 RF Oscillator Adjustment
1. Connect the Odyssey to an operating TV and defeat the
TV AFT.
2. Place the TV Channel Selector to Channel 3, mechanically
center the fine tuning, and set the Odyssey Channel
Select switch to Channel 3.
3. While observing the game display, adjust L 1 for optiml!m
response.
4. Change the TV and the Odyssey to Channel 4 operation.
5. While observing the game display, adjust L 1
&
C14 for
optimum response. (Note very little change will be
noticed while adjusting C14).
6. Repeat Steps 2 thru 5 until Channel 3 and 4 game
displays are equal in quality .
TYPICAL OPERATION (TENNIS)
Connect the 300 ohm twin lead from the Antenna/Game
switch to the 300 ohm antenna terminals of a properly
adjusted and operating television receiver. Connect the
game cord cable from the Odyssey unit to the Antenna/
Game switch and place the Game/TV switch in the "Game"
position.
Place the Channel switch on the Odyssey to either Channel
3 or 4 and the television VHF Channel Selector to the same
channel.
GSFWP1076
Set the Game switch to the center position and Skill switch
to the desired skill level. Move the Power/Reset switch to the
center position and fine tune the television if necessary.
When play is ready to begin, move the Power/Reset switch
to the Reset position and al low it to return to the center
position. The score is now set to zero and the game begins.
When either contestant reaches 15 points the players will
be unable to return the ball and a new game will have to
be started.
Printed in U.S.A., Copyright 1976