V –
19
Trouble
Action to be taken
(3) Speaker silent during
on-hook dialing.
• Check whether the ordinary dialing function (other than the on-
hook dialing with the hook key) works correctly or not.
- If yes, proceed to the following checks:
- If not, refer to item (1) above.
• Check the speaker.
• Check the NCU PCB.
• Check the main PCB.
(4) Dial does not switch
between tone and pulse.
• Check the main PCB.
(5) Telephone does not
ring.
• Check the speaker.
• Check the NCU PCB.
• Check the main PCB.
■
Communications related
Trouble
Action to be taken
(1) No tone is transmitted.
• Check the main PCB.
• Check the NCU PCB.
Содержание FAX-615
Страница 4: ...CHAPTER I GENERAL DESCRIPTION ...
Страница 5: ...CONTENTS 1 EQUIPMENT OUTLINE I 1 1 1 External Appearance I 1 1 2 Components I 1 2 SPECIFICATIONS I 2 ...
Страница 10: ...CHAPTER II INSTALLATION ...
Страница 11: ...CHAPTER III THEORY OF OPERATION ...
Страница 33: ...III 20 5 MODEM Main PCB Circuit Diagram 5 5 1 MODEM 2 Clock for MODEM ...
Страница 35: ...III 22 NCU Circuit Diagram 2 1 3 5 6 7 8 9 4 2 a ...
Страница 38: ...CHAPTER IV INDICATION AND INFORMATION PRINTOUT OF ERROR ...
Страница 50: ...CHAPTER V MAINTENANCE ...