Service manual

Chapter 14
14-50
F-14-29
Lamp test (6-8: LINE DETECT)
Press numeric keypad key 8 on the FACULTY menu to select the scan lamp illumination mode. The test checks to see if the scan lamp is on or not.
Numeric keypad key 1 selects LAMP TEST ALL. Press the start key to turn on all scan lamps. LAMP TEST AGC is not used.
Line signal reception test (6-9: 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 sensor
and the frequency counter. Menu 1 detects the CI state, while menu 3 detects the CNG signal.
Test menu 1
Press 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 LCD
display 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 as
detected. The LCD displays, from left to right, CI, CI frequency, hook port and FC with indications of 1:ON and 0:OFF.
Test menu 2
Press 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 to
right, with ON/OFF indications. Numeric keypad key 2 turns on the CML relay to detect CNG.
Test menu 3
Press 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 to
right, with ON/OFF indications. Numeric keypad key 3 turns off the CML relay to detect CNG.
14.15.10 Function Test ((6) FUNCTION TEST) (iR2020i)
0012-6266
iR2020i
Function test ((6) FUNCTION TEST)
Press the numeric keypad key 6 on the test mode menu to select the function test.
Press numeric keypad keys 1 and 3 to 9 during the function test to enter the menus listed below.
T-14-31
G3 signal transmission test (6-1: G3 480 bps Tx)
Press numeric keypad key 1 on the FUNCTION TEST menu to select the G3 signal transmission test. This test transmits 4800-bps G3 signals from the telephone
Keypad Item Explanation
1 G3 signal transmission test Transmits 4800-bps G3 signals to a telephone line and
speaker.
2 Not used
3 Sensor test Sensor actuation test
4 ADF test ADF operation test
5 Book test Host machine operation test
6 Speaker test Speaker operation test
7 Not used
8 Lamp test Contact sensor illumination test
9 Line signal reception test NCU board signal sensor and frequency counter operation test
Press the start key.
All-H character display
All-black display
All-LED illumination
Press the keys associated with
characters on display to erase
the characters.
Press the one-touch dialing keys
associated with characters on
display to erase the characters.
LCD test
LED lamp test
Operation key
test (1)
Press the start key.
6-7 : OPERATION PANEL
Press 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.
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012345678
ABCDEFGHIJKLMNOPQR