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VI –
13
2.4
Troubleshooting Procedures
[ 1 ]
Control panel related
Trouble
Check:
Trouble
Check:
(1) LCD shows nothing.
• Main-panel harness between the main PCB and the
control panel PCB
• Control panel PCB
• Low-voltage power supply PCB
• Main PCB
(2) Control panel inoperative.
• Main-panel harness between the main PCB and the
control panel PCB
• Control panel PCB
• FPC key
• Main PCB
(1) No phone call can be made.
• FPC key
• Control panel PCB
• NCU PCB
• Main PCB
(2) Speed dialing or one-touch
dialing will not work.
• Ordinary dialing function (other than the speed and one-
touch dialing)
If it works normally, check the main PCB; if not, refer to
item (1) above.
(3) Speaker silent during on-hook
dialing.
• Ordinary dialing function (other than the on-hook dialing
with the hook key)
If it works normally, proceed to the following checks; if
not, refer to item (1) above.
(4) Dial does not switch between
tone and pulse.
(5) Telephone does not ring.
• Main PCB
• Speaker
• NCU PCB
• Main PCB
[ 2 ]
Telephone related
Содержание MFC 4550
Страница 5: ...CHAPTER I GENERAL DESCRIPTION ...
Страница 14: ...CHAPTER II INSTALLATION ...
Страница 15: ...CONTENTS 1 INSTALLING THE UPDATE DATA TO THE FACSIMILE EQUIPMENT II 1 ...
Страница 18: ...CHAPTER III THEORY OF OPERATION ...
Страница 49: ...CHAPTER IV DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 81: ...CHAPTER V MAINTENANCE MODE ...
Страница 89: ...V 7 Scanning Compensation Data List 200 dpi ...
Страница 133: ...CHAPTER VI ERROR INDICATION AND TROUBLESHOOTING ...
Страница 163: ...MAIN 8 8 FAX3550 3650 8000P 8200P MFC4550 6550MC 7550MC MFC9000 9500 A ...
Страница 185: ...D CONTROL PANEL 1 2 ...
Страница 187: ...E POWER SUPPLY 120 V Low voltage power supply ...
Страница 188: ...E POWER SUPPLY 200 240 V Low voltage power supply European versions ...
Страница 189: ...E POWER SUPPLY 200 240 V Low voltage power supply Asian versions ...
Страница 190: ...E POWER SUPPLY High voltage power supply ...
Страница 191: ...Sept 98 5X52012 Printed in Japan ...