Service manual

Chapter 15
15-40
PRINT Test (3: PRINT)
Press '3' on the keypad from the Test Mode menu to select Print Test mode. A press on '2' or '6' on the keypad during
the test will generate any of the following 2 types of test patterns.
Do not use the others, as they are especially designed for use by the factory and R&D.
'2' on Keypad
3-2: Press it to generate BLACK, which is a solid black print.
'6' on Keypad
3-6: Press it to generate ENDURANCE, which is a black band.
To stop test printing, press the Stop key.
F-15-18
MODEM NCU Test (4: MODEM NCU)
Use it to execute a transmission test for MODEM NCU. In a modem test, you can make sure that the signals from
the modem are transmitted normally by listening to the sound of signals from the speaker.
You can also use it to make sure that the received tonal signal and DTMF signal are correctly detected by the modem.
To end the test, press the Stop key.
T-15-27
Type Description
Relay test Use it to turn on/off a selected relay to execute a switch-
over test.
G3 signal transmission test Use it to generate the G3 signal coming from the modem
using the telephone line terminal and the speaker.
DTMF signal reception test Use it to generate the DTMF signal coming from the
modem using the telephone line terminal and the speaker.
Check to make sure that the print
pattern is free of contraction,
elongation, dirt, or black lines.
Check it to make sure that the
print pattern is free of white
line or uneven density.