7-1
7.1 CONTROL PANEL
A. Telephone and Message Center keys
B. Liquid Crystal Display (LCD)
On/Off
Let’s you activate the Message Center and blinks if
you did not play your voice messages.
Play/Record
Lets you listen to voice messages stored in memory.
Also, this key lets you record telephone calls.
Erase
Lets you delete voice messages, all fax messages or
all messages.
Speaker Phone
Lets you dial telephone and fax numbers and speak to
another party without lifting the handset.
Hold
Lets you place calls on hold.
Redial/Pause
Redials the last number you called. It also inserts a
pause in auto dial numbers.
Displays messages on the screen to help you to set up
and use your machine.
Quality
Date
Current receive
mode
Recording paper
type
A
B
E
D
C
Summary of Contents for MFC-4820C
Page 1: ...FACSIMILE EQUIPMENT SERVICE MANUAL MODEL MFC4820C MFC4420C ...
Page 6: ...CHAPTER 1 PARTS NAMES FUNCTIONS ...
Page 13: ...CHAPTER 2 SPECIFICATIONS ...
Page 19: ...2 5 2 1 4 Environmental Conditions ...
Page 26: ...CHAPTER 3 SETTING UP OF THE MACHINE ...
Page 29: ...3 2 3 2 UNPACKING THE MACHINE The equipment consists of the following major components ...
Page 40: ...CHAPTER 4 THEORY OF OPERATION ...
Page 76: ...CHAPTER 5 ROUTINE MAINTENANCE ...
Page 84: ...CHAPTER 6 DISASSEMBLY REASSEMBLY ...
Page 114: ...6 29 6 1 11 Speaker 1 Pull the speaker and its spring out of the lower cover ...
Page 136: ...CHAPTER 7 MAINTENANCE MODE ...
Page 145: ...7 8 Scanning Compensation Data List ...
Page 160: ...7 23 1st sheet 2nd sheet Vertical Alignment Check Patterns and Head Skew Check Pattern ...
Page 162: ...7 25 Margin Check Patterns ...
Page 170: ...CHAPTER 8 ERROR INDICATION AND TROUBLESHOOTING ...
Page 197: ...MFC4820C MFC4420C Appendix 1 Serial No Descriptions ...
Page 205: ...App 2 4 Click Finish to return to Windows ...
Page 209: ...MFC4820C MFC4420C Appendix 3 EEPROM Customizing Codes ...
Page 212: ...MFC4820C MFC4420C Appendix 4 Firmware Switches WSW ...
Page 252: ...App 4 40 WSW48 to WSW50 Selector No Function Setting and Specifications 1 8 Not used ...
Page 253: ...MFC4820C MFC4420C Appendix 5 Re Packing Instructions ...
Page 255: ...App 5 2 2 Place the machine in the original box with the original packaging material ...
Page 256: ...MFC4820C MFC4420C Appendix 6 Wiring Diagram ...
Page 259: ...A Main PCB 1 5 ...
Page 260: ...A Main PCB 2 5 ...
Page 261: ...A Main PCB 3 5 ...
Page 262: ...A Main PCB 4 5 ...
Page 263: ...A Main PCB 5 5 ...
Page 264: ...B Driver PCB ...
Page 265: ...C NCU PCB ...
Page 266: ...D Control Panel PCB ...
Page 267: ...E Power Supply PCB ...