Upper Left Jet
Matrix column 3, row 1 ·
Wiring
- Column 3
- Green-Orange J206-3 · U20-16
- Row 1
- White-Brown J208-1 · U18-11
Parts
- Switch SW-11A-37
- Assembly B-12030-2
Location
Owner's hint
Leaf switch under the jet bumper skirt. Adjust the blade gap so a light nudge on the skirt closes the contact. (owner's experience, not the manual)
Related
Service log
Everything you record stays on this device.
Service notes: In the switch matrix at column 3 (J206-3, U20-16) and row 1 (J208-1, U18-11). 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