HP HP-7035B, Technical Manual

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3-32. INSTALL PAPER
3-33. Install a sheet of graph paper on the recording platen,
aligning lower and left edges with corresponding paper guides.
Set the CHART switch to HOLD, thereby activating the
AUTOGRIP holddown system. Smooth paper as necessary.
3-34. INSTALL PEN
3-35. The disposable pen is pushed into the notched holder
located on the scale, and twisted clockwise to lock in holder.
See Figure 3-3.
CAUTION The disposable pen incorporates a
precision writing tip. Care must be taken
not to damage this tip during pen
changing or other handling. Writing by
hand on any surface may damage pen tip.
Use pen only in pen holder on recorder.
3-36. ZERO SET
3-37. Connect the input signals to the recorder and adjust
ZERO controls so that the resulting graph will cover the
desired area on the paper.
3-38. LOWER PEN
3-39. Place PEN toggle switch to DOWN position.
FIGURE 3-3. DISPOSABLE PEN INSTALLATION
3-4