Switch 51

51

Shooter Lane

Matrix column 5, row 1 ·  

Wiring

Column 5
Green-Black J206-5 · U20-14
Row 1
White-Brown J208-1 · U18-11

Parts

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)

Service log

 

Everything you record stays on this device.

Service notes: In the switch matrix at column 5 (J206-5, U20-14) 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