Reproducing the accidents
Tyler, 1986: Malfunction 54
- Type a patient name, RETURN, and RETURN again for the treatment mode.
- BEAM TYPE: X RETURN. The energy fills in 25 and the machine starts setting its bending magnets, which takes about 8 seconds.
- RETURN for the energy, then 200, 202 and 1, each followed by RETURN. Then press RETURN six times to copy the room settings. The cursor is now on COMMAND.
- After 2 seconds but before 8 have passed since you typed X, press ↑ until you are back on BEAM TYPE (11 times). Type E RETURN, then RETURN back down to COMMAND.
- When SYSTEM says BEAM READY, type B RETURN.
The screen says ELECTRON; the machine fired X-ray current with the turntable in the electron position. The screen shows MALFUNCTION 54, TREAT PAUSE and 6 monitor units. P RETURN does it again.
Yakima, 1987: Class3 overflow
- Enter an X-ray prescription down to COMMAND, as above, without the edit.
- Press FIELD LIGHT on the hand control. SYSTEM says PRESS SET BUTTON.
- Open "What the operator couldn't see" and press SET (or type SET RETURN) when Class3 is between about 240 and 254.
- If BEAM READY appears, type B RETURN. You get FLATNESS and no dose on the monitor.
Keys: Enter is RETURN, Backspace is BACK SPACE, Insert is LINE FEED, F1–F4 are PF1–PF4, Scroll Lock is NO SCROLL. R RETURN resets.