LC II G1 & G2 BOMARC Error

RetroViator

Tinkerer
Oct 30, 2021
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retroviator.com
While working on a troublesome LC II, I discovered the BOMARC schematics incorrectly depict the connections to the G1 and G2 oscillators.

Based on my poking around, I believe they should be as follows:

G1 - 25.175MHz
Pin 1 - NC
Pin 2 - Ground
Pin 3 - UG5 (Pin 42)
Pin 4 - 5v (c124)

G2 - 31.3344MHz
Pin 1 - NC
Pin 2 - Ground
Pin 3 - UG5 (Pin 38)
Pin 4 - 5v (c88)

BOMARC has G1 and G1 swapped and flipped pins 2 and 3 on G2.