MAIN BOARD INPUTS
5
TICKET SIGNAL # 2
6
BALL DROP BUTTON
COIN ACCEPTOR
BILL ACCEPTOR
TICKET RESET
TICKET SIGNAL # 1
1
2
3
4
SPACE BALLZ - MAIN BOARD INPUT CHART
IC
PICTURE
CONTENT
INPUT #
18
BONUS HOLE SWITCH
13
SCORE SWITCH # 5
14
SCORE SWITCH # 6
15
SCORE SWITCH # 7
10
SCORE SWITCH # 2
11
SCORE SWITCH # 3
12
SCORE SWITCH # 4
7
INSTRUCTION BUTTON
8
9
SCORE SWITCH # 1
21
32
U0
8
U0
9
U1
0
U1
1
28
29
30
25
26
27
22
CRANE - LEFT SWITCH
23
CRANE - RIGHT SWITCH
24
BONUS STOP SENSOR
19
BELT SWITCH # 1
20
BELT SWITCH # 2
21
16
SCORE SWITCH # 8
17
SCORE SWITCH # 9
U11
IS NOT UTLIZED IN SPACE BALLS. THIS
SPARE IC CAN BE USED IN
U08
,
U09
, &
U10
TO RECITFY POTENTIAL ISSUES WITH
THOSE IC'S. IF YOU SWAP IC'S, BE SURE TO
PUT THE DEFECTIVE IC BACK INTO
U11
BEFORE POWERING THE UNIT ON. IF THIS
FIXES YOUR PROBLEM, BE SURE TO
RECORD THAT THE IC IN
U11
IS NOW
DEFECTIVE AND CANNOT BE USED AGAIN
IN ANOTHER SOCKET
Jennison Entertainment Technologies
Space Ballz Service Manual
Page 49