Medusa

1 Introduction

Project Date: February 4, 1981

Date Of Manufacture: September, 1981

Production: 3,250 units (confirmed)

Theme: Fantasy - Myth and Legend

Notable Features: Flippers (4, the upper 2 are "Time Locked Zipper Flippers"), Pop bumpers (4). Star rollovers (7), 7-bank drop targets (1), 4-bank drop targets (1), Kick-out hole (1). Digital displays in playfield. Has player-controlled rubbered post between flippers to hit ball back into play. Mini-posts in wide outlane entrances. Red translucent lower flippers are lit from underneath.

2 Technical Info

Type: Solid State Electronic (SS)

A1 Display Module: 4x AS-2518-58 (7-digits), 1x AS-2518-21 (6-digits Credits display)

A2 Power Module: AS-2518-54

A3 Solenoid Driver Module: AS-2518-22

A4 Bally MPU Module: AS-2518-35

A5 Lamp Driver Module: AS-2518-23

A9 Auxiliary Lamp Driver Module: AS-2518-52

A14 Squawk & Talk Sound Module: AS-2518-61A

A15 Solenoid Expander: AS-2518-66

3 Charts

3.1 Lamp Chart

SCR	conn.	lamp description	code	wire color	tr type
Q54	A5J3-11	Advance Olympus 1	20	Blu	MCR-106
Q49	A5J3-17	Advance Olympus 2	13	Red-Yel	MCR-106
Q35	A5J1-3	Advance Olympus 3	45	Grn-Wht	MCR-106
Q16	A5J2-22	Ball-in-Play (Back Box)	62	Brn-Blu	MCR-106
Q05	A5J2-16	Collossus Bonus 30K	34	Yel-Grn	2N5060
Q18	A5J2-20	Collossus Bonus 60K	98	Gry-Blk	2N5060
Q30	A5J2-6	Collossus Bonus 90K	10	Red	2N5060
Q43	A5J2-7	Collossus Bonus 120K	91	Gry-Red	2N5060
Q06	A5J2-14	Collossus Bonus 150K	12	Red-Blu	2N5060
Q19	A5J2-15	Collossus Special	23	Blu-Yel	2N5060
Q52	A5J3-13	Credit Indicator	35	Yel-Wht	2N5060
Q33	A5J2-11	Game Over (Back Box)	95	Gry-Wht	MCR-106
Q09	A5J1-14	Gate Lane Left 2X	67	Brn-Orn	MCR-106
Q34	A5J1-2	Gate Lane Left 3X & Bonus Multiplier 2X	52	Wht-Blu	MCR-106
Q48	A5J3-16	Gate Lane Left 5X & Bonus Multiplier 3X	25	Blu-Wht	MCR-106
Q55	A5J3-9	Gate Lane Left 50K & 5X Bonus Multiplier	15	Red-Wht	MCR-106
Q14	A5J1-18	Gate Lane Right 10K	58	Wht-Blk	2N5060
Q29	A5J1-1	Gate Lane Right 20K	41	Grn-Red	2N5060
Q36	A5J3-26	Gate Lane Right 30K	43	Grn-Yel	2N5060
Q57	A5J3-1	Gate Lane Right 40K	10	Red	2N5060
Q12	A5J1-19	Gate Lane Right 50K	60	Brn	2N5060
Q27	A5J1-9	Gate Lane Right Special	43	Grn-Yel	2N5060
Q08	A5J1-23	Gate Lanes Left & Right, Arrow	12	Red-Blu	MCR-106
Q15	A5J2-23	High Score to Date (Back Box)	97	Gry-Orn	MCR-106
Q42	A5J3-21	Last Ball Extended Play	64	Brn-Grn	MCR-106
Q23	A5J2-8	Match (Back Box)	82	Blk-Blu	MCR-106
Q10	A5J1-15	Medusa Bonus 1K	13	Red-Yel	MCR-106
Q22	A5J1-10	Medusa Bonus 2K	23	Blu-Yel	MCR-106
Q37	A5J3-23	Medusa Bonus 3K	98	Gry-Blk	2N5060
Q60	A5J3-3	Medusa Bonus 4K	81	Blk-Red	2N5060
Q11	A5J1-16	Medusa Bonus 5K	15	Red-Wht	2N5060
Q26	A5J1-7	Medusa Bonus 6K	34	Yel-Grn	2N5060
Q32	A5J3-27	Medusa Bonus 7K	40	Grn	2N5060
Q59	A5J3-4	Medusa Bonus 8K	14	Red-Grn	2N5060
Q04	A5J1-28	Medusa Bonus 9K	78	Orn-Blk	2N5060
Q25	A5J1-6	Medusa Bonus 10K	25	Blu-Wht	2N5060
Q20	A5J1-13	Medusa Bonus 20K	30	Yel	2N5060
Q58	A5J3-2	Medusa Bonus 40K	95	Gry-Wht	2N5060
Q41	A5J3-20	Medusa Bonus 60K	78	Orn-Blk	MCR-106
Q46	A5J3-18	Medusa Bonus 80K	56	Wht-Brn	2N5060
Q45	A5J2-1	Medusa Special	60	Brn	2N5060
Q03	A5J2-21	Same Player Shoot Again (Back Box)	47	Grn-Orn	MCR-106
Q40	A5J3-22	Same Player Shoot Again (Playfield)	23	Blu-Yel	MCR-106
Q13	A5J1-17	Saucer 50K	57	Wht-Orn	2N5060
Q28	A5J1-8	Saucer 100K	51	Wht-Red	2N5060
Q44	A5J3-19	Saucer 150K	67	Brn-Orn	2N5060
Q51	A5J3-15	Saucer 200K	53	Wht-Yel	2N5060
Q24	A5J1-5	Saucer Bonus Arrow	48	Grn-Blk	MCR-106
Q56	A5J3-10	Saucer Extended Play Arrow	91	Gry-Red	MCR-106
Q01	A5J1-24	Saucer Special	50	Wht	MCR-106
Q14	*A9J2-12	Shooter Lane "Ready"	62	Brn-Blu	MCR-106
Q21	*A9J3-4	Shooter Lane "Aim"	95	Gry-Wht	MCR-106
Q28	*A9J3-13	Shooter Lane "Fire"	96	Gry-Brn	MCR-106
Q06	*A9J2-6	Shooter Lane #1 R.O. Button & Gorgon B.	45	Grn-Wht	MCR-106
Q13	*A9J2-13	Shooter Lane #2 R.O. Button & Gorgon B.	40	Grn	MCR-106
Q20	*A9J3-7	Shooter Lane #3 R.O. Button & Gorgon B.	82	Blk-Blu	MCR-106
Q27	*A9J3-14	Shooter Lane #4 R.O. Button & Gorgon B.	27	Blu-Orn	MCR-106
Q07	*A9J2-5	Shooter Lane #5 R.O. Button & Gorgon B.	60	Brn	MCR-106
Q07	A5J1-27	Target #1 Arrow	53	Wht-Yel	2N5060
Q21	A5J1-12	Target #2 Arrow	61	Brn-Red	2N5060
Q39	A5J3-24	Target #3 Arrow	72	Orn-Blu	2N5060
Q47	A5J2-10	Tilt (Back Box)	35	Yel-Wht	MCR-106
Q38	A5J3-25	to Solenoid Expander	36	Yel-Brn	2N5060
Q17	A5J1-11	Top "A" Arrow	65	Brn-Wht	MCR-106
Q02	A5J1-25	Top "B" Arrow	75	Orn-Wht	MCR-106
Q31	A5J2-2	Top Middle Back Target	20	Blu	2N5060
Q01	*A9J2-7	Top of Panel #1 (Left)	10	Red	MCR-106
Q08	*A9J2-14	Top of Panel #2	12	Red-Blu	MCR-106
Q15	*A9J3-8	Top of Panel #3	13	Red-Yel	MCR-106
Q22	*A9J3-15	Top of Panel #4	14	Red-Grn	MCR-106
Q02	*A9J2-4	Top of Panel #5	15	Red-Wht	MCR-106
Q09	*A9J2-11	Top of Panel #6	18	Red-Blk	MCR-106
Q16	*A9J3-3	Top of Panel #7	20	Blu	MCR-106
Q23	*A9J3-12	Top of Panel #8	21	Blu-Red	MCR-106
Q03	*A9J2-8	Top of Panel #9	51	Wht-Red	MCR-106
Q10	*A9J2-15	Top of Panel #10	52	Wht-Blu	MCR-106
Q17	*A9J3-9	Top of Panel #11	53	Wht-Grn	MCR-106
Q24	*A9J3-16	Top of Panel #12	56	Wht-Brn	MCR-106
Q04	*A9J2-10	Top of Panel #13	80	Blk	MCR-106
Q11	*A9J2-18	Top of Panel #14	57	Wht-Orn	MCR-106
Q18	*A9J3-11	Top of Panel #15	70	Orn	MCR-106
Q25	*A9J3-18	Top of Panel #16	72	Orn-Blu	MCR-106
Q05	*A9J2-9	Top of Panel #17	54	Wht-Grn	MCR-106
Q12	*A9J2-17	Top of Panel #18	43	Grn-Yel	MCR-106
Q19	*A9J3-10	Top of Panel #19	25	Blu-Wht	MCR-106
Q26	*A9J3-17	Top of Panel #20	23	Blu-Yel	MCR-106
Q53	A5J3-14	Top of Panel #21 (Right)	84	Blk-Grn	2N5060
Q50	A5J3-12		21	Blu-Red	2N5060

* indicates located on Aux. Lamp Driver Module A9

3.2 Solenoids

Sol. No	Solenoid description	Solenoid Type	Wire Code	Wire Color	Connector	Driver Transistor	Sol. Exp. Wire Color	Solenoid Coil Type
1	Knocker	Momentary	74	Orn-Grn	A3J1-3, J2-4	Q2	(91) Gry-red	ATT-26-1200
2	4-Bank Drop Target Reset	Momentary	78	Orn-Blk	A3J1-2, J2-9	Q1	(91) Gry-red	NO-26-1900
3	7-Bank Drop Target Reset	Momentary	71	Orn-Red	A3J2-10	Q5	(91) Gry-red	NO-26-1900 (2)
4	Top Drop Target #2	Momentary	91	Gry-Red	A3J2-11	Q6	(91) Gry-red	CV-31-2000
5	Top Drop Target #4	Momentary	81	Blk-Red	A3J2-12	Q7	(91) Gry-red	CV-31-2000
6	Top Drop Target #6	Momentary	85	Blk-Wht	A3J2-5, J3-4	Q3	(91) Gry-red	CV-31-2000
7	Shield of the Gods Post	Momentary	95	Gry-Wht	A3J1-5	Q4		AO-26-1200
8	Outhole	Momentary	85	Blk-Wht	A3J5-10	Q8	(91) Gry-red	AT-26-1200
9	Bottom Left Thumper Bumper	Momentary	80	Blk	A3J5-12	Q13		AT-26-1200
10	Bottom Right Thumper Bumper	Momentary	78	Orn-Blk	A3J5-11	Q14		AT-26-1200
11	Top Left Thumper Bumper	Momentary	71	Orn-Red	A3J5-9	Q9		AT-26-1200
12	Top Right Thumper Bumper	Momentary	74	Orn-Grn	A3J5-15	Q10		AT-26-1200
13	Left Slingshot	Momentary	67	Brn-Orn	A3J5-13	Q12		AN-26-1200
14	Bottom Right Slingshot	Momentary	83	Blk-Yel	A3J5-14	Q11		AN-26-1200
15	Top Right Slingshot	Momentary	18	Red-Blk	A3J2-6, J3-7, J5-8	Q16		AN-26-1200
16	Open Movable Flipper	Momentary	74	Orn-Grn	A3J1-3, J2-4	Q2	(67) Brn-Orn	GT-30-1300
17	Close Movable Flipper	Momentary	78	Orn-Blk	A3J1-2, J2-9	Q1	(67) Brn-Orn	NB-24-1500
18	Top Drop Target #1	Momentary	71	Orn-Red	A3J2-10	Q5	(67) Brn-Orn	CV-31-2000
19	Top Drop Target #3	Momentary	91	Gry-Red	A3J2-11	Q6	(67) Brn-Orn	CV-31-2000
20	Top Drop Target #5	Momentary	81	Blk-Red	A3J2-12	Q7	(67) Brn-Orn	CV-31-2000
21	Top Drop Target #7	Momentary	85	Blk-Wht	A3J2-5, J3-7	Q3	(67) Brn-Orn	CV-31-2000
22	Saucer	Momentary	85	Blk-Wht	A3J5-10	Q8	(67) Brn-Orn	AT-27-1300
23	Coin Lockout	Continuous	36	Yel-Brn	A3J2-8	Q19		FO-36-7000
24	Flipper enabling relay	Continuous	--	--	--	Q15		48V Relay
25		Continuous			A3J5-7	Q17
26		Continuous			A3J2-15, J3-9, J5-3	Q18

Flipper Circuits	Power Wire	Flipper Coil Wire	Flipper Connector	Flipper Button Wire	Button Connector	Coil
Left Flipper	60 (Brn)	40 (Grn)	A3J1-8	20 (Blu)	A3J2-2	AQ-25-500/34-4500
Right Flipper	60 (Brn)	70 (Orn)	A3J1-9	10 (Red)	A3J2-1	AQ-25-500/34-4500
Top Left Flipper	60 (Brn)	18 (Red-Blk)		(to lower left flipper)		AQ-25-500/34-4500
Top Right Flipper	60 (Brn)	83 (Blk-Yel)		(to lower right flipper)		AQ-25-500/34-4500

3.3 Switch Matrix

			Strobe 0	Strobe 1	Strobe 2	Strobe 3	Strobe 4	Strobe 5
	to Playfield	--	A4J2-1 Wht-Red (51)	A4J2-2 Orn (70)	A4J2-3 Gry-Yel (93)	A4J2-4 Wht-Yel (53)	A4J2-5 Yel-Red (31)	A4J2-7 Orn-Blu (72)
	--	to Cabinet	A4J3-2 Red-Yel (13)	A4J3-3 Red-Grn (14)	A4-J3-5 (not used)	A4-J3-6 (not used)	A4-J3-7 (not used)	A4-J3-8 (not used)
Return I-0	A4J2-8 Wht-Grn (54)	A4J3-9 Red-Wht (15)	1 4-Bank Drop Target D (Bottom)	9 Coin Chute III (Right)	17 Cabinet Post Button	25 Left & Right Lower Gate	33 Spinner	41 Movable Flipper End of Stroke
Return I-1	A4J2-9 Brn-Yel (63)	A4J3-10 Brn-Wht (65)	2 4-Bank Drop Target C	10 Coin Chute I (Left)	18 10 Points Rebounds (3)	26 Right Top Gate	34 Top Right Slingshot	42 7-Bank Drop Target #7 (Right)
Return I-2	A4J2-10 Wht-Orn (57)	A4J3-11 Blu (20)	3 4-Bank Drop Target B	11 Coin Chute II (Middle)	19 Saucer	27 Top Right Back Target	35 Bottom Right Slingshot	43 7-Bank Drop Target #6
Return I-3	A4J2-11 Orn-Blk (78)	A4J3-12 Blu-Red (21)	4 4-Bank Drop Target A (Top)	12 Left Side Target (Top)	20 Shooter Lane Rollover Button #1	28 Top Left Gate	36 Left Slingshot	44 7-Bank Drop Target #5
Return I-4	A4J2-12 Brn (60)	A4J3-13 Blu-Yel (23)	5 Not Used	13 Left Side Target (Middle)	21 Shooter Lane Rollover Button #2	29 Top Left Back Target	37 Top Right Thumper Bumper	45 7-Bank Drop Target #4
Return I-5	A4J2-13 Wht-Brn (56)	A4J3-14 Blu-Wht (25)	6 Credit Button	14 Left Side Target (Bottom)	22 Shooter Lane Rollover Button #3	30 Top Middle Back Target	38 Top Left Thumper Bumper	46 7-Bank Drop Target #3
Return I-6	A4J2-14 Brn-Wht (65)	A4J3-15 Blu-Orn (27)	7 Not Used	15 Tilt (3)	23 Shooter Lane Rollover Button #4	31 Left & Right Outlane Rollover Button	39 Lower Right Thumper Bumper	47 7-Bank Drop Target #2
Return I-7	A4J2-15 Wht-Blu (52)	A4J3-16 Yel (30)	8 Outhole	16 Slam (2)	24 Shooter Lane Rollover Button #5	32 Left & Right Outlane	40 Lower Left Thumper Bumper	48 7-Bank Drop Target #1 (Left)

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