[volt-nuts] Datron 1281 Selcal Multiplier

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These error codes 2292, 2282, 2272, 2262, 2252, 2216, and 2214 all use 
the Selfcal Multiplier circuit.
I have all the error codes listed above, when doing a INT SRCE CAL.
Output at M609 pin-2  is not a dc level, therefore M609 pin-15 is a 
sawtooth waveform.
Output on M609 pin-2 is a 10% duty on time square wave with a positive 
offset.
All IC's are functional
What is the problem with this selfcal multiplier circuit?
John