Ricoh AC104, Сервисная документация

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FAX & PHONE PROBLEMS
B173 4-32 SM
4.7 FAX & PHONE PROBLEMS
4.7.1 NO DIAL TONE
Description
While on-hook button is pressed, there is no dial tone.
Check and Cause Solution
Check if the telephone line cord is
connected to “LINE” correctly. If the telephone cord is normal but
there is no dial tone, then try to
replace the LIU Board.
Check if it makes CLICK sound while
on hook dial key is pressed. If you cannot hear the CLICK sound of
the on hook dial key, the OPE Ass’y
may be defective. Replace the OPE
assembly.
Check the connection of HARNESS
between the LIU and the Main Board. Check the Speaker connection, and
try to replace it.
Check if the SPEAKER is connected
correctly. Lastly, try to replace the Main Board.
4.7.2 DEFECTIVE TONE DIAL
Description
The Tone Dial is not functioning.
Check and Cause Solution
Check if the telephone line is connected
correctly. If you cannot hear the CLICK sound of
the on hook dial key, the OPE Ass’y
may be defective. Replace the OPE
assembly.
When the ten key pad is pressed, check
to hear a CLICK sound. If you can hear a CLICK sound, after
checking the connection of HARNESS
between the LIU and the Main Board,
try to replace the HARNESS.
Check the connection of HARNESS
between the LIU and the Main Board. The problem still persists, then
replace the LIU and the Main Board in
sequence.
Notes: Product supports the Tone
Dial type only.