PS-11 files in HPGL format.

Errors:
1. Reverse VD32 diode

Comments:
1  Voltage on pin10 of D13 should be 0.3...0.4 lower
   than on pin11
2. If too much noise in "Sound" presents,
   remove the wire from D12 pin8 to base of VT13
   and connect those nets with a microphone cable,
   grounding its shield nearby R68 or C21