Service manual

Chapter 15
15-49
F-15-27
Line Connection Reception Test (6-9: LINE DETECT)
A press on '9' on the keypad from the FACULTY TEST menu selects the LINE DETECT test. On Test Menu 1, you
can check C1, FC, state of hooking of the eternal telephone, and the detection of signals by the NCU package.
Test Menu 1
A press on '1' on the keypad from the LINE DETECT menu selects test menu 1. In this test, the LCD indication
changes from 'OFF' to 'ON' when C1, FC, or off-set of the external telephone is detected in relation to the telephone
line.
Test Menu 3
A press on '3' on the keypad from the LINE DETECT menu selects test menu 3. In this test, the LCD indication
Press the Start key.
Character H is indicated.
The screen turns totally black.
All LED lamps go ON.
A press on the key causes its
corresponding character to go out.
A press on a 1-touch dial key causes
its corresponding character to go out.
LCD test
LED lamp test
Control
key test (1)
Press the Start key.
6 - 7 : OPERAT I ON PANEL
Press the Start key.
Press the Start key.
Control key test (2)
After all characters are gone, press the Stop key to end the test.
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LED
TEST
6 - 7 : OPERAT I ON
PANEL
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H I J K LMNOPQR
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