Quote:
Originally Posted by Ed in Tx
Are you working on the head relay board or the cylinder motor? Two separate circuits. The cylinder motor I think has a plug under the deck. But without a manual I am relying on memory from repairing them 30 years ago.
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I was working on the head relay board. As for the cylinder motor, yes, it does have a connector under the chassis; it connects to this power board in front of the loading mech:
The power board connects to the servo board which has these signals labeled:
I measured the following while switching the unit from 'standby' to 'on':
"13V" - 13.19V
"12V" - 12.78V
"22V" - 25.7V
"Drum M. CTL" - 8.6V (steady)
"Drum Phase" - 6.34V (steady)
"Cap M. CTL" - peaks at 3.75V before quickly dropping to 0.65V
"Cap Discri" - 7.25V (steady)
"Cap Phase" - constantly moves between 4V and 6V
What does this tell you?