Marantz PM-94

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Repair

I've comared the two side of the power amp.
I realised, that the D701, D717 and D719 is wrong. The two zener don't stabilize the voltage, but I don't know, what is the other diode. The revere and the forward voltage is about 300mV in the good side. In the parts list, this diode is a 10YD4.5c, but I didn't find that device on the net.

Could You help me, what is this dide?
 
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