Medusa

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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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