It's great to be able to obtain a precious technical information for a real old equipment. The one I got helps me a lot in the area of wiring diagram to repair my antique. PDF gave me clear enough information to find out thr details. Thanks for giving me the oppotunity to be able to access to almost vanished informations.
Good quality for the scan, complete, but as usual for Tascam, not so comprehensive !
Text excerpt from page 33 (click to view)
(2) The basic rotation cycle of the toner sensor is as follows:
T time Basic rotation cycle of toner sensor Toner low time Toner full time 2.5 sec. t1 > 0.64 sec. 0.64 sec. > t1 > 0.28 sec.
Opening the stacker cover turns off the microswitch on the high-voltage power supply board to suspend +5 V supply to the high voltage power supply. This results in the stop of all high-voltage outputs. At the same time, the CVOPN signal is issued to notify the main control board of the switch status and cover open processing is executed.