Switch 75

75

Left Outlane

Matrix column 7, row 5 ·  

Wiring

Column 7
Green-Violet J206-7 · U20-12
Row 5
White-Green J208-5 · U19-11

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)

Related

Service log

 

Everything you record stays on this device.

Service notes: In the switch matrix at column 7 (J206-7, U20-12) and row 5 (J208-5, U19-11). 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