Everything You Ever Wanted to Know About
Space Invaders Solenoid and Lamp Assignments

The following table lists each driver transistor, the coil it drives,
the pre-driver IC associated with it along with the pin numbers of the base and collector (respectively),
and the decoder IC BINARY input signals (ABCD) and output pin number.

TIP-102
Transistor
Coil CA3081
Pre-Driver IC
74L154
Decoder*
Q1 Not Used U1, 16, 1 0001/2
Q2 Not Used U1, 3, 2 0000/1
Q3 Knocker U1, 6, 4 0101/6
Q4 Outhole Kicker U1, 8, 7 0110/7
Q5 Not Used U1, 13, 14 0010/3
Q6 Not Used U1, 11, 12 0011/4
Q7 Not Used U1, 10, 9 0100/5
Q8 3 Drop Target Reset U3, 16, 1 0111/8
Q9 Left Thumper Bumper U3, 3, 2 1010/11
Q10 Right Thumper Bumper U3, 8, 7 1011/13
Q11 Left Slingshot U3, 6, 4 1101/15
Q12 Bottom Thumper Bumper U3, 10, 9 1100/14
Q13 Single Drop Target Reset U3, 11, 12 1000/9
Q14 Not Used U3, 13, 14 1001/10
Q15 Flipper Enable Relay U4, 3, 2 n/a
Q16 Right Slingshot U4, 8, 7 1110/16
Q17 Not Used U4, 10, 9 n/a
Q18 Not Used U4, 11, 12 n/a
Q19 Coin Lockout U4, 13, 14 n/a

*NOTE*
"n/a" Decoder info indicates these drivers get their signals as continuous
solenoids directly from the MPU at A4J4-5, 6, 7, and 8 and not the Decoder IC.


This table lists all the 2N5060 SCRs on the Lamp Driver module, the name of the lamp it drives,
the decoder IC associated with the SCR along with the BINARY input signals (AD0, AD1, AD2, AD3) and output pin,
and the name of the 2K Ohm resistor (red/black/red) connected to the decoder output.

2N5060
SCR
Lamp MC14514
Decoder
2K Ohm
Resistor
Q4 #5 Hoop Target U1, 0111/4 R7
Q5 10K Drop Target U1, 1101/13 R3
Q6 Special Drop Target U1, 1110/16 R2
Q7 5K Hoop U1, 1011/19 R1
Q11 #1 Target (from Left) U1, 0110/5 R8
Q12 5K Bonus U1, 0001/9 R12
Q13 9K Bonus U1, 0010/10 R13
Q14 1K Bonus U1, 0000/11 R14
Q18 15K Drop Target U2, 1101/13 R15
Q19 Not Used U2, 1110/16 R11
Q20 Right Small Flap Feed Lane U3, 0111/4 R10
Q21 Special Right Hoop U2, 1011/19 R9
Q25 Bonus Increase 50,000 Arrow U2, 0111/4 R22
Q26 #2 Target U2, 0110/5 R23
Q27 6K Bonus U2, 0001/9 R27
Q28 10K Bonus U2, 0010/10 R28
Q29 2K Bonus U2, 0000/11 R29
Q30 20K Drop Target U3, 1101/13 R30
    
2N5060
SCR
Lamp MC14514
Decoder
2K Ohm
Resistor
Q31 Right Extra Ball Lane U3, 1110/16 R26
Q32 #3 Target U3, 0110/5 R25
Q36 3K Bonus U3, 0000/11 R45
Q37 Top Center Rollover U3, 0101/6 R38
Q38 7K Bonus U3, 0001/9 R41
Q39 Special Left Hoop U3, 1011/9 R24
Q43 25K Drop Target U4, 1101/13 R44
Q44 20K Bonus U3, 0010/10 R43
Q45 Left Extra Ball Lane U4, 1110/16 R42
Q46 Top Clone Chamber U4, 1001/17 R40
Q50 8K Bonus U4, 0001/9 R55
Q51 5X Bonus U4, 0010/10 R56
Q52 Credit Indicator U4, 1010/20 R37
Q53 Spinner 1000 U4, 1011/19 R39
Q57 4K Bonus U4, 0000/11 R57
Q58 Left Small Flap Feed Lane U4, 0111/4 R50
Q59 #4 Target U4, 0110/5 R53
Q60 Top Right Rollover U4, 0101/6 R54


This table lists all the MCR-106 SCRs on the Lamp Driver module, the name of the lamp it drives,
the MC14514 decoder IC associated with the SCR along with the BINARY input signals (AD0, AD1, AD2, AD3) and output pin,
the CD4050 driver IC associated with the SCR along with the input and output pins,
and the name of the 2K Ohm resistor (red/black/red) connected to the decoder output.

MCR-106
SCR
Lamp MC14514
Decoder
CD4050
Driver*
2K Ohm
Resistor
Q1 10K Clone Chamber U1, 1000/18 U5, 14/15 R6
Q2 50K Clone Chamber U1, 1001/17 U5, 11/12 R5
Q3 Shoot Again U1, 1010/20 U5, 9/10 R4
Q4 #5 Hoop Target U1, 0011/8 U5, 3/2 R16
Q9 20K (1 - 5) U1, 0100/7 U5, 5/4 R17
Q10 25K Hoop U1, 0101/6 U5, 7/6 R18
Q15 High Score To Date U2, 1100/14 U6, 14/15 R19
Q16 Ball In Play U1, 1100/14 U6, 11/12 R20
Q17 Target Increase 50,000 Arrow U2, 1001/17 U6, 9/10 R21
Q22 Top Left Rollover U2, 0101/6 U6, 3/2 R31
Q23 Match U2, 1010/20 U6, 5/4 R32
Q24 20K Clone Chamber U2, 1000/18 U6, 7/6 R33
    
MCR-106
SCR
Lamp MC14514
Decoder
CD4050
Driver*
2K Ohm
Resistor
Q33 Game Over U3, 1100/14 U7, 14/15 R34
Q34 40K (1 - 5) U2, 0100/7 U7, 9/10 R35
Q35 3X Hoop, 2X Bonus U2, 0011/8 U7, 11/12 R36
Q40 Same Player Shoots Again U3, 1001/17 U7, 3/2 R46
Q41 #5 Target Arrow U3, 1001/17 U7, 7/6 R48
Q42 30 Clone Chamber U3, 1000/18 U7, 5/4 R47
Q47 Tilt U4, 1100/14 U8, 14/15 R49
Q48 60K (1 - 5) U3, 0100/7 U8, 9/10 R51
Q49 4X Hoop, 3X Bonus U3, 0011/8 U8, 11/12 R52
Q54 5X Hoop, 4X Bonus U4, 0011/8 U8, 3/2 R58
Q55 Special (1 - 5) U4, 0100/7 U8, 5/4 R59
Q56 40K Clone Chamber U4, 1000/18 U8, 7/6 R60

*NOTE*
The AS-2518-23 Lamp Driver Module does not use the CD4050 hex driver chips
so ignore that column if that's the style of lamp driver you have.


This table lists all the MCR-106 SCRs on the Auxiliary Lamp Driver (AS-2518-52), the name of the lamp it drives,
the MC14028 BCD/Decimal decoder IC associated with it, along with the BINARY input signals (ABC) and the output pin,
and the 2K Ohm resistor (red/black/red) connected to the decoder output.

MCR-106
SCR
Lamp MC14028
Decoder
2K Ohm
Resistor
Q1 1 Left & Bottom (Door Frame) U2, 000/3 R10
Q2 5 Top & Left U2, 001/14 R11
Q3 1 Top & Right (Door Frame) U2, 010/2 R12
Q4 5 Bottom & Right (Door Frame) U2, 011/15 R13
Q5 7 Creature U2, 100/1 R14
Q6 2 Creature U2, 101/6 R15
Q7 Not Used U2, 110/7 R16
Q8 2 Left & Bottom (Door Frame) U3, 000/3 R17
Q9 6 Top & Left (Door Frame) U3, 001/14 R18
Q10 2 Top & Right (Door Frame) U3, 010/2 R19
Q11 6 Bottom & Right (Door Frame) U3, 011/15 R20
Q12 Not Used U3, 100/1 R21
Q13 6 Creature U3, 101/6 R22
Q14 Not Used U3, 110/7 R23
    
MCR-106
SCR
Lamp MC14028
Decoder
2K Ohm
Resistor
Q15 3 Left & Bottom (Door Frame) U4, 000/3 R24
Q16 7 Top & Left (Door Frame) U4, 001/14 R25
Q17 3 Top & Right (Door Frame) U4, 010/2 R26
Q18 7 Bottom & Right (Door Frame) U4, 011/15 R27
Q19 3 Creature U4, 100/1 R28
Q20 5 Creature U4, 101/6 R29
Q21 Not Used U4, 110/7 R30
Q22 4 Left & Bottom (Door Frame) U5, 000/3 R31
Q23 8 Top & Left (Door Frame) U5, 001/14 R32
Q24 4 Top & Right (Door Frame) U5, 010/2 R33
Q25 8 Bottom & Right (Door Frame) U5, 011/15 R34
Q26 1 Creature U5, 100/1 R35
Q27 8 Creature U5, 101/6 R36
Q28 Not Used U5, 110/7 R37

 

NOTES
I got all this information from the schematics and pretty much copied it verbatim.

If you notice any mistakes (I'm only human), please let me know and I'll fix it up.

If you need to know which solenoid driver transistor goes to which solenoid driver board connector, Click Here.

If you need to know which lamp SCR goes to which lamp driver board connector, Click Here.



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Created 5/10/08 - Last Modified 1/24/09 - Steve Kulpa Mail Icon Nolensville, TN
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