CHAPTER 13 TROUBLESHOOTINGCOPYRIGHT © 2002 CANON INC. 2000 CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 200213-148b. G3 Signal Transmission TestA press on ‘4’ on the keypad from the MODEM NCU Test menu selects the G3 signaltransmission test. In this test, the following G3 signals from the modem are transmittedusing the telephone line terminal and the speaker. To select a different transmission speed,use the keypad.Keypad012345678Transmission speed300 bps2400 bps4800 bps7200 bps9600 bpsTC7200 bpsTC9600 bps12000 bps14400 bpsMemoThe output level of individual signals is in keeping with the setting madein service mode.c. Tonal/DTMF Signal Reception TestA press on ‘6’ on the keypad from the MODEM NCU Test menu selects the tonal sig-nal/DTMF signal reception 0 test. In this signal, the tonal signal/DTMF signal receivedfrom the telephone line terminal can be checked to find out if it was detected by the mo-dem.4-6 : TONE Rx 0000 0 0changes from '0' to '1' in response to detection of a signal of 462 ± 25 Hz.changes from '0' to '1' in response to detection of a signal of 1100 ± 30 Hz.changes from '0' to '1' in response to detection of a signal of 2100 ± 25 Hz.Tonal signal reception test4-6 : TONE Rx 0001 2 3 4 5 6 7 8 9 0DTMF signal reception testThe received DTMF signals are indicatedstarting from the right using the 2ndcharacter of the display.F13-505-08
