Chapter 552F-5-21Line signal reception test (9: LINE DETECT)Press numeric keypad key 9 on the FACULTY menu to select the line signal reception test. In this test, verify the successful operations of the NCU signal sensorand the frequency counter. Menu 1 detects the CI state, while menu 3 detects the CNG signal.Test menu 1Press numeric keypad key 1 on the LINE DETECT menu to select test menu 1. When CI is detected on the telephone line connection terminal, the LCDdisplay changes from OFF to ON, indicating the received frequency. The LCD also displays the on-hook or off-hook state of an external telephone set asdetected. The LCD displays, from left to right, CI, CI frequency, hook port and FC with indications of 1:ON and 0:OFF.Test menu 2Press numeric keypad key 2 on the LINE DETECT menu to select test menu 2. When the CNG signal is detected on the telephone line connection terminal,the LCD display changes from OFF to ON, indicating the received frequency. The LCD displays the status of CML, CNG and FED detection, from left toright, with ON/OFF indications. Numeric keypad key 2 turns on the CML relay to detect CNG.Test menu 3Press numeric keypad key 3 on the LINE DETECT menu to select test menu 3. When the CNG signal is detected on the telephone line connection terminal,the LCD display changes from OFF to ON, indicating the received frequency. The LCD displays the status of CML, CNG and FED detection, from left toright, with ON/OFF indications. Numeric keypad key 3 turns off the CML relay to detect CNG.5.1.13.6 Roller cleaning mode ((0) ROLLER CLEAN) 0013-1428/ / / / iR1018 / iR1018J / / iR1022A / iR1022F / iR1022i / iR1022iF /Roller cleaning mode ((0) ROLLER CLEAN)Press numeric keypad key 0 in test mode to select roller cleaning mode. Press numeric keypad keys 1 and 2 during this test to enter the following menus:Numeric keypad key 1Press the start key clean the ADF pickup/feed rollers by idling.Press the stop key to exit this mode.Numeric keypad key 2Press the start key clean the unit transfer rollers by idling.Press the stop key to exit this mode.Press the start key.All-H character displayAll-black displayAll-LED illuminationPress the keys associated withcharacters on display to erasethe characters.Press the one-touch dialing keysassociated with characters ondisplay to erase the characters.LCD testLED lamp testOperation keytest (1)Press the start key.6-7 : OPERATION PANELPress the start key.Press the start key.Operation key test (2)After erasing all characters on display,press the stop key to exit the test.0123456789*#ABCDEFGHIJKLMNOPQRSTU012345678ABCDEFGHIJKLMNOPQR