3–107OPERATIONS AND TIMINGCOPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)C. Control Display Mode (‘1’)• To select an item, press the appropriate number on the numeric keypad and then the Start key.• To deselect an item, press the Clear key.• A press on the Start key while a description of the selected service mode is indicated will executeappropriate copying operations.No.101103104105106107108109110112113114116120121123Service modeJam locationPrimary current buffer displayPrimary charging voltage displayPrimary current displayIntensity displayJam historyError history (E indications)Fixing main thermistor (TH1) detectiontemperatureFixing target temperatureAE sensor outputROM version No.ROM release No.AE scan intensity displayJam intervalJam paper size dataJam document handler copying dataDescriptionIndicates the jam location on the copy counterindicator. (See the next page.)unit: μAunit: VTo obtain the actual primary charging voltage, put theindicated value into negative and subtract 1000.unit: μAunit: luxTo obtain the actual intensity (lux), divide the indi-cated value by 100.See the next page.Indicates a history of the most recent ten errors. Apress on the ‘1’, ‘2’, ‘3’, ‘4’, ‘5’, ‘6’, ‘7’, ‘8’, ‘9’, or ‘0’key on the numeric keypad will indicate the either ofmost recent through tenth most recent error.unit: °Cunit: °CNormal if the value changes for each original whenmaking copies in AE.Indicates the parts revision number of the ROM.Indicates the version of the program.Normal if between ‘68’ and ‘72’.Table 3-602
