I have a DX 60 transmitter. the driver grid voltage is -14 volts it should be -95 volts. The osc grid voltage is at -27.8 volts and should be -18 volts. Both in key down.
In "key down" mode a lot of the negative bias voltage is shorted to ground by the key closure to ground. The negative voltage at the oscillator under key down conditions is a function of the operation of the oscillator as an oscillator and it will vary from crystal to crystal. Of course without a crystal or VFO input the transmitter will not transmit.
The bias voltage at the driver should NOT be -95 V under "key down" conditions or else the driver would be "turned OFF" and the transmitter would not transmit.
I don't have a copy of the documentation handy to determine specifically what the voltages should be under key down conditions.