Upper Left Loop
Matrix column 3, row 8 ·
Wiring
- Column 3
- Green-Orange J206-3 · U20-16
- Row 8
- White-Grey J208-9 · U19-7
Parts
- Switch 5647-12693-19
- Assembly A-12688
Location
Owner's hint
Rollover switch with a wire actuator. Check that the wire moves freely and the microswitch clicks. (owner's experience, not the manual)
Related
- 25Right Flipper LaneSwitch · matrix column 2, row 5
- 26Right OutlaneSwitch · matrix column 2, row 6
- 63Thing Eject LaneSwitch · matrix column 6, row 3
- 67Upper Right LoopSwitch · matrix column 6, row 7
- 75Left OutlaneSwitch · matrix column 7, row 5
- 76Left Flipper Lane 2Switch · matrix column 7, row 6
- 78Left Flipper Lane 1Switch · matrix column 7, row 8
Service log
Everything you record stays on this device.
Service notes: In the switch matrix at column 3 (J206-3, U20-16) and row 8 (J208-9, U19-7). Gap 1/16 inch; clean by pulling card stock through the closed contacts, never a file. One switch that fails T.1 is its gap, the wire at the lug or its diode; a shorted diode makes the whole column or row misread. A whole column dead is U20 or the J206 pin, a whole row is the row comparator. A3 Switches and optos
Appendices:A3 Switches and optosA5 Power driver boardA1 Multimeter basics