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8-2
Messages on the LCD
Probable Cause
LOW TEMPERATURE
Room temperature is below
spec.
(These messages appear alternately.)
The temperature inside the machine is too low.
NEAR EMPTY CYAN
NEAR EMPTY MGENT
NEAR EMPTY YELLW
NEAR EMPTY BLACK
The ink dot counter (for the indicated color) in the EEPROM
on the driver PCB has counted up the specified number of
dots, meaning that the ink cartridge is near empty.
Even if any of these messages is displayed, color printing is
still possible.
PAPER JAM
Open cover, then remove
jammed paper.
(These messages appear alternately.)
The registration sensor detects that a paper jam has occurred.
PC BUSY OR FAIL
After connected with the host computer, the equipment has
received no response from the computer. (A communications
error has occurred.)
PLS OPEN COVER
To display the relating detailed error code, use maintenance-
mode function code 82. (Refer to Chapter 7, Section 7.5.20.)
If this message appears, open and close the scanner unit. The
message may disappear if opening/closing the scanner unit
removes the error. If the error persists, the "MACHINE
ERROR X X" will appear instead of this message.
SCANNER ERROR
In the scanning compensation data list printed by the
maintenance-mode function code 05 (refer to Chapter 7,
Section 7.5.2), fifty percent or more of the white level data is
faulty.
(This message may appear only in the maintenance mode)
If only an alarm beep is heard without any message on the LCD when the equipment is turned on,
then the ROM or RAM will be defective.
Содержание MFC-4820C
Страница 1: ...FACSIMILE EQUIPMENT SERVICE MANUAL MODEL MFC4820C MFC4420C ...
Страница 6: ...CHAPTER 1 PARTS NAMES FUNCTIONS ...
Страница 13: ...CHAPTER 2 SPECIFICATIONS ...
Страница 19: ...2 5 2 1 4 Environmental Conditions ...
Страница 26: ...CHAPTER 3 SETTING UP OF THE MACHINE ...
Страница 29: ...3 2 3 2 UNPACKING THE MACHINE The equipment consists of the following major components ...
Страница 40: ...CHAPTER 4 THEORY OF OPERATION ...
Страница 76: ...CHAPTER 5 ROUTINE MAINTENANCE ...
Страница 84: ...CHAPTER 6 DISASSEMBLY REASSEMBLY ...
Страница 114: ...6 29 6 1 11 Speaker 1 Pull the speaker and its spring out of the lower cover ...
Страница 136: ...CHAPTER 7 MAINTENANCE MODE ...
Страница 145: ...7 8 Scanning Compensation Data List ...
Страница 160: ...7 23 1st sheet 2nd sheet Vertical Alignment Check Patterns and Head Skew Check Pattern ...
Страница 162: ...7 25 Margin Check Patterns ...
Страница 170: ...CHAPTER 8 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 196: ...8 25 3 Pull up the jammed paper to remove it Jammped paper 4 Reinstall the paper tray Paper tray ...
Страница 197: ...MFC4820C MFC4420C Appendix 1 Serial No Descriptions ...
Страница 204: ...App 2 3 Select the folder where the Downloader driver is located then click OK Click Next Click Yes ...
Страница 205: ...App 2 4 Click Finish to return to Windows ...
Страница 209: ...MFC4820C MFC4420C Appendix 3 EEPROM Customizing Codes ...
Страница 212: ...MFC4820C MFC4420C Appendix 4 Firmware Switches WSW ...
Страница 252: ...App 4 40 WSW48 to WSW50 Selector No Function Setting and Specifications 1 8 Not used ...
Страница 253: ...MFC4820C MFC4420C Appendix 5 Re Packing Instructions ...
Страница 255: ...App 5 2 2 Place the machine in the original box with the original packaging material ...
Страница 256: ...MFC4820C MFC4420C Appendix 6 Wiring Diagram ...
Страница 259: ...A Main PCB 1 5 ...
Страница 260: ...A Main PCB 2 5 ...
Страница 261: ...A Main PCB 3 5 ...
Страница 262: ...A Main PCB 4 5 ...
Страница 263: ...A Main PCB 5 5 ...
Страница 264: ...B Driver PCB ...
Страница 265: ...C NCU PCB ...
Страница 266: ...D Control Panel PCB ...
Страница 267: ...E Power Supply PCB ...
Страница 268: ...Feb 03 SM FAX016 8CA602 Printed in Japan ...