I, Robot - Coin-Op Videogame Pinout

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This game has been tagged as belonging to conversion class: unique

There is a specific pin-out record on file for I, Robot:

            I, Robot
--------

Pinout for "I, Robot" CPU board connector (P20)
	A	GND
	1	GND
	Z	GND
	22	-Sense
	B	+5V
	2	+5V
	Y	+5V out
	21	+Sense
	3
	X	Joystick X
	4	Reset from switching power supply
	W
	E	+10.3V unregulated
	18	+10.3V unregulated
	C
	D
	F	Led player 2
	H	Coin counter right
	J	Joystick Y
	K
	L	Coin right
	M	Test
	N
	P
	R
	S
	T	Fire 1
	U	Start player 2
	V	Reset out
	5
	6	Led player 1
	7	Coin counter left
	8	Audio 1
	9	Audio 2
	10 	Coin left
	11	Aux. coin
	12
	13
	14
	15
	16
	17	Start player 1
	19
	20
	
Pinout for "I, Robot" video board connector (P19)
	A	Ground
	B	+5V
	C
	D
	E
	F
	H	Video ground
	J
	K
	L
	M
	N
	P
	R	+5V
	S	Ground
	1	Ground
	2	+5V
	3	V sync
	4	H sync
	5	Red
	6	Green
	7	Blue
	8	V int (interrupt?)
	9	- Composite sync
	10
	11
	12
	13
	14
	15

Additional information:
10.3 V / 15.5 V ???
Looking at the power supply schematic, there is a 15.5V signal
generated, that goes to pin E on connector P20.  The voltage
also goes to pin 9 on the 'control panel' connector (P24).  However,
if you look at the CPU pinout (above), pin E is mentioned as using
10.3V unregulated.  I from what I see, I suppose that anything
between 10.3V and 15.5V should work.  I know many switching power
supplies that you can buy come with +-12V output, maybe you can use
this.

Audio 1 / Audio 2
The CPU PCB has two audio outputs (pins 8 and 9) that connect
to the switching power supply in the following way:
     CPU PCB        Switching power supply
     Audio 1 (pin 8) - L audio (pin 1)
     Audio 2 (pin 9) - L audio GND (pin 2)
The power supply has two additional outputs that connect to
the speaker/volume control
     power supply
     L speaker + (pin 3) - 'utility panel' pin 2
     L speaker - (pin 4) - 'utility panel' pin 1
                             speaker +
I am not 100% sure where the Audio 1/2 signal is amplified.  All
I can tell is that the audio output from the CPU goes into the
power supply, and two other audio lines go from the power supply to
the volume knob / speakers.