VI
- 21
Jobs enclosed by parentheses (
♦
) require the special adjustment jig.
Trouble
Action to be taken
(7) Print edges not aligned
At the printer
• Check the alignment of vertical print lines by using the
maintenance-mode function code 65. (Refer to Chapter V,
Section 3.11).
• Check the print head unit.
• Check the encoder strip for stains or scratches. (
♦
If the
encoder strip is not hooked properly, correct it.)
(8) Ink splash
At the printer
• For each of the four ink-jet units, perform the head purging
operation several times to remove dust or air bubbles from its
nozzles.
• Check the ink cartridges. Any of them has run out of ink or the
ink viscosity has been increased, so replace it.
• Replace the print head unit.
• Replace the main PCB
• Replace the power supply PCB.
• (
♦
Adjust the head-platen gap by turning the eccentric bushings
on the carriage rail.)
(9) Random missing dots
At the printer
• For each of the four ink-jet units, perform the head purging
operation several times to remove dust or air bubbles from its
nozzles.
• Check the ink cartridges. If any cartridges have run out of ink,
replace them.
• Check the dimple contact between the print head PCB and the
carriage PCB. Clean it if contaminated.
• Replace the print head unit.
(
♦
If the problem persists, replace the carriage ASSY.)
• Check the connection of the head flat cables on the main PCB.
(
♦
If either of those cables is broken or damaged, replace the
carriage ASSY.)
• Replace the main PCB
• (
♦
Adjust the position of the purge unit.)
• (
♦
Clean the purge cap of the purge unit with the head cleaner.
If the wiper or the pump of the purge unit is defective, replace
the purge unit.)
Summary of Contents for MFC-760
Page 1: ...FACSIMILE EQUIPMENT SERVICE MANUAL MODEL MFC9100C MFC760 ...
Page 4: ...CHAPTER I GENERAL DESCRIPTION ...
Page 11: ...CHAPTER II INSTALLATION ...
Page 12: ...CHAPTER II INSTALLATION CONTENTS 1 INSTALLING THE UPDATE DATA TO THE FACSIMILE EQUIPMENT II 1 ...
Page 15: ...CHAPTER III THEORY OF OPERATION ...
Page 17: ...III 1 1 OVERVIEW ...
Page 30: ...III 14 Location of Sensors and Actuators ...
Page 33: ...III 17 ...
Page 35: ...III 19 MFC9100C Asian Oceanian versions ...
Page 36: ...III 20 MFC760 ...
Page 39: ...CHAPTER IV DISASSEMBLY REASSEMBLY LUBRICATION AND ADJUSTMENT ...
Page 46: ...IV 5 n n Disassembly Order Flow ...
Page 76: ...IV 35 5 Remove the two screws and take out the speaker ...
Page 90: ...IV 49 8 Remove eight screws 9 Lift up the main chassis ...
Page 114: ...IV 73 2 Shafts on the left side of the main chassis 3 Main chassis ...
Page 115: ...IV 74 4 Purge unit 5 Idle pulley holder ...
Page 116: ...IV 75 6 Paper feed frame ASSY ...
Page 122: ...IV 81 ...
Page 126: ...CHAPTER V MAINTENANCE MODE ...
Page 133: ...V 6 Scanning Compensation Data List ...
Page 174: ...V 47 MFC9100C MFC760 Key Button Entry Order ...
Page 180: ...V 53 Vertical Alignment Check Pattern Alignment ON Aligned ...
Page 183: ...CHAPTER VI ERROR INDICATION AND TROUBLESHOOTING ...
Page 207: ...July 99 SM5CA203 Printed in Japan ...
Page 208: ...MFC9100C MFC760 Appendix 1 EEPROM Customizing Codes ...
Page 212: ...A Main PCB 1 8 ...
Page 213: ...A Main PCB 2 8 ...
Page 214: ...A Main PCB 3 8 ...
Page 215: ...A Main PCB 4 8 ...
Page 216: ...A Main PCB 5 8 ...
Page 217: ...A Main PCB 6 8 ...
Page 218: ...A Main PCB 7 8 ...
Page 219: ...A Main PCB 8 8 ...
Page 220: ...B NCU PCB U S A ...
Page 223: ...C Control Panel PCB ...
Page 224: ......
Page 225: ......
Page 226: ...MFC9100C MFC760 Appendix 1 EEPROM Customizing Codes ...
Page 230: ...A Main PCB 1 8 ...
Page 231: ...A Main PCB 2 8 ...
Page 232: ...A Main PCB 3 8 ...
Page 233: ...A Main PCB 4 8 ...
Page 234: ...A Main PCB 5 8 ...
Page 235: ...A Main PCB 6 8 ...
Page 236: ...A Main PCB 7 8 ...
Page 237: ...A Main PCB 8 8 ...
Page 238: ...B NCU PCB U S A ...
Page 241: ...C Control Panel PCB ...
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Page 271: ...PL5CA203 Ver B ...
Page 272: ...MFC 9100C OWNER S MANUAL ...
Page 329: ...S E T U P R E C E I V E 5 10 ...
Page 341: ...S E T U P S E N D 6 12 ...
Page 445: ...C O L O R F A X I N G 19 10 ...
Page 471: ...T R O U B L E S H O O T I N G A N D R O U T I N E M A I N T E N A N C E 21 20 ...
Page 479: ...S P E C I F I C A T I O N S 23 4 ...