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(ET) E20 - #4 card
Title: Message
I recently tried to
rebuild a #4 card from an E20 tractor with interesting results. I replaced
all the diodes on the original board, both the big & little ones. Checked that all traces were good to and from diodes and other components.
Plugged card into connector and now the tractor is behaving oddly. In forward position I only have 3 speeds now, in reverse I have 6 plus cruise setting? I have checked and rechecked all connections and components, but
can't figure out what has happened to cause the reversal of dirctions. My
next step will be to replace the resistors and the two ic's on board. Does
anyone know what the 2 components Q401 & Q402 are called, and what type(s) are they?
Thanks,
Bob
K
Bob
Kleinbrahm
Senior
Network Engineer
First
Republic Bank
San
Francisco, CA. 94111
415
288-1478
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