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Confidential
5.1.20 Engine Unit and Maintenance Unit
During disassembly jobs, except when removing the ink refill ASSY or engine unit (including the
maintenance unit), leave the head/carriage unit and all four ink cartridges in the machine.
Before removing the head/carriage unit, ink refill ASSY or engine unit, you need to replace the
current ink cartridges with dummy ones and drain ink from the ink refill ASSY and head/carriage
unit (see
). After ink draining, be sure to set protective cartridges instead of dummy
ones.
Removing the engine unit
(1) Lift the engine unit up and out of the lower cover.
NOTE:
When handling the engine unit, hold it at the both ends with both hands taking care not
to touch the PF encoder disk. Do not hold it with one hand at the center, particularly at the
carriage rail section.
NOTE:
Do not place the engine unit directly on a flat surface; doing so may break the PF
encoder disk and gears. Be sure to place a support pad under the engine unit as illustrated
below.
Paper ejection
roller gear
Paper feed roller gear
PF encoder disk
Support pad
Lower cover
Engine unit
Summary of Contents for FAX 1840C
Page 1: ...Confidential FACSIMILE EQUIPMENT SERVICE MANUAL MODELS MFC3340CN 3240C FAX1940CN 1840C 1835C ...
Page 9: ...Confidential CHAPTER 1 PARTS NAMES FUNCTIONS ...
Page 18: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Page 50: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Page 91: ...Confidential CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Page 96: ...Confidential CHAPTER 5 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 167: ...5 69 Confidential Viewed from the left ...
Page 171: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 191: ...6 18 Confidential Vertical Alignment Check Patterns ...
Page 193: ...6 20 Confidential Margin Check Pattern ...
Page 202: ...Confidential CHAPTER 7 CLEANING ...
Page 205: ...Confidential CHAPTER 8 MAINTENANCE MODE ...
Page 216: ...8 9 Confidential Scanning Compensation Data List a b c d e f i ...
Page 236: ...8 29 Confidential 1st sheet 2nd sheet Vertical Alignment Check Patterns ...
Page 239: ...8 32 Confidential Margin Check Pattern ...
Page 249: ...Confidential CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ...
Page 253: ...9 2 Confidential ...
Page 254: ...9 3 Confidential ...
Page 371: ...B Power Supply PCB U S A and Canadian models Confidential ...
Page 372: ...B Power Supply PCB European and Asian models Confidential ...
Page 401: ...Confidential February 05 SM FAX032 8XA901 5 Printed in Japan ...