Olivetti PR2 E Service Manual page 72

Provided below is the photosensor calibration block diagram.
ST2 PRESSEDWHILE
POWERING ON THE
ACOUSTICSIGNAL
AND LEDS ON
MOVE THE PRINTHEAD TO
THE LEFT AND CLOSE
4
THE COVER
READ PHOTOSENSOR BUTTON
LED ST2 ON
*
THE SHEET IS NOT EXPELLED. A
LONG BEEPSOUNDS.THE
FLASHINGLEDSIDENTIFY THE
FAULTY PHOTOSENSOR
(SEETHE TABLE ON THE
PREVIOUSPAGE)
AND ALL THE PRESSANY BUTTON
I
LEDS IDENTIFY THE
FAULNPHOTOSENSOR
STAMPA DEI VALORI DI
THE PRINTER