CHAPTER 13 TROUBLESHOOTINGCOPYRIGHT © 2002 CANON INC. 2000 CANON iR1600/iR2000 REV.1 JAN. 2002 13-132.4 Checking the Sensors2.4.1 Checking the SensorsTo find out whether a photointerrupter is good or faulty, use ‘SENSOR’ under ‘TESTMODE’ in service mode as follows:1) Press the additional function key and the ID (#) key in sequence to start service mode.2) Using the cursor key, select ‘TEST MODE’.3) Press ‘6’ on the keypad to select ‘6: FACULTY TEST’.4) Press ‘3’ on the keypad to start sensor chec k mode, indicated by the following screen:F13-204-015) While the above screen is indicated, press ‘1’, ‘2’, ‘3’, ‘4’, and ‘5’ on the keypad so thatthe Status screen of each respective sensor will appear; for instance, when ‘1’ is pressedon the keypad,F13-204-02CRG on DCVS onDS of ofDES A4DOCSensor nameCurrent sensor statusSensor nameCurrent sensor status6-3:SENOR[1] - - - [7]
