Brother International MFC 8890DW Service Manual - Page 141
Troubleshooting Of Fax Functions
UPC - 012502622673
View all Brother International MFC 8890DW manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 141 highlights
10. TROUBLESHOOTING OF FAX FUNCTIONS ■ FAX can't send it. - Verify that the telephone cord is securely inserted into the right socket. Step 1 2 3 4 5 6 7 8 9 Possible cause Check Result Remedy Dialing mode Setting Does a dialing signal (PB or DP) come out normally in each mode? (Use telephone line emulator.) Check the dialing mode setting at customer's Yes again. Check the telephone line cord between machine and socket. Connection between main PCB and NCU PCB Are the main PCB and NCU PCB connected properly? Reconnect the connector No properly. Harness between main PCB and NCU PCB Is the harness damaged? Replace the harness with a Yes normal one. Connection between main PCB and control panel PCB Are the main PCB and control panel PCB connected properly? Reconnect the connector No properly. Harness between main PCB and control panel PCB Is the harness damaged? Replace the harness with a Yes normal one. Contact of rubber Does the rubber key key work correctly? No Replace the rubber Key. NCU PCB Is the problem solved after replacing the NCU PCB ASSY? Replace the NCU PCB Yes ASSY. Control panel PCB Is the problem solved after replacing the control panel PCB? Replace the control panel Yes PCB. Main PCB Is the problem solved after replacing the main PCB ASSY? Replace the main PCB Yes ASSY. 3-69 Confidential