15 March 1987
PAPER CREASING
- Possible Causes -
• If thin copy paper is used, the leading edge may not set
between the fusing rollers, resulting in creased copies.
• Paper curl
- Action -
Is thin paper used frequently?
Y N
I
Move the fusing entrance guide to the upper position.
correctly
If the paper is curled, reduce fusing pressure. If this does not solve the
creasing problem, instruct the customer to correct the paper curl before
copying.
MULTIFEED AND MISFEED
- Possible Causes -
• Incorrect friction between the feed pad and feed roller
• Very thin or very thick paper is being used
- Action -
Is the gap between the friction pad and feed roller 1.6 ± 0.3 mm?
Y N
I
Adjust the friction pad/feed roller gap.
Do the feed problems occur mostly with the cassette tray?
Y N
I
• If multifeeds are common, decrease the friction pad/feed roller gap
slightly to increase feed friction.
• If misfeeds (feed failure) are common, increase the friction
pad/feed roller gap slightly to decrease feed friction.
• If the customer uses special paper frequently, adjust the friction
at one feed station to match the special paper. Instruct the user
to use only that station to copy the special paper.
Adjust the friction pad holder position.
If the above measures do not solve the problem, replace the feed roller
and friction pad.
9-18
Summary of Contents for FT4480
Page 1: ...FT4480 F I E L D S E R V I C E M A N U A L RICOH COMPANY LTD ...
Page 4: ...SECTION 1 INSTALLATION ...
Page 26: ...SECTION 2 SERVICE TABLES ...
Page 48: ...SECTION 3 REPLACEMENT AND ADJUSTMENT ...
Page 140: ...SECTION 4 ELECTRICAL DATA ...
Page 142: ...4 PAPER FEED CONTROL BOARD SCHEMATIC 15 March 87 A 0 0 9 ...
Page 143: ...5 DC POWER SUPPLY BOARD SCHEMATIC ...
Page 144: ...9 SORTER CONTROL BOARD SCHEMATIC 15 March 87 A 0 0 9 ...
Page 145: ...10 LCT CONTROL BOARD SCHEMATIC Main Control ...
Page 146: ...SECTION 5 DOCUMENT FEEDER ...
Page 171: ...SECTION 6 SORTER ...
Page 181: ...SECTION 7 LARGE CAPACITY TRAY ...
Page 195: ...SECTION 8 EDITOR BOARD ...
Page 204: ...S E C T I O N 9 ...
Page 237: ...RICOH FT4480 A009 PARTS CATALOG First Edition May 1987 RICOH COMPANY LTD ...
Page 239: ...1 EXTERIOR A009 May 1 87 ...
Page 241: ...2 REGISTRATION AND 3RD PAPER FEED A009 May 1 87 4 ...
Page 243: ...3 PLATEN COVER AND CASSETTE A009 May 1 87 6 ...
Page 245: ...4 1ST AND 2ND PAPER FEED A009 May 1 87 8 ...
Page 247: ...5 3RD PAPER LIFT A009 May 1 87 10 ...
Page 249: ...6 CASSETTE TRAY A009 May 1 87 12 ...
Page 251: ...7 FRAME A009 May 1 87 14 ...
Page 253: ...8 OPTICS 1 A009 May 1 87 16 ...
Page 255: ...9 OPTICS 2 A009 May 1 87 18 ...
Page 257: ...10 AROUND DRUM A009 May 1 87 20 ...
Page 259: ...11 CLEANING UNIT A009 May 1 87 22 ...
Page 261: ...12 DEVELOPMENT UNIT A009 May 1 87 ...
Page 263: ...13 DRIVE SECTION A009 May 1 87 26 ...
Page 265: ...14 PAPER TRANSPORT A009 May 1 87 28 ...
Page 267: ...15 FUSING UNIT A009 May 1 87 30 ...
Page 269: ...16 PAPER EXIT A009 May 1 87 ...
Page 271: ...17 ELECTRICAL SECTION 1 A009 May 1 87 34 ...
Page 273: ...18 ELECTRICAL SECTION 2 A009 May 1 87 36 ...
Page 275: ...19 MAIN BOARD A009 May 1 87 3 8 ...
Page 277: ...20 DC POWER SUPPLY BOARD A009 May 1 87 40 ...
Page 279: ...21 FUSING LAMP DRIVE BOARD A009 May 1 87 42 ...
Page 281: ...22 POWER RELAY BOARD A009 May 1 87 ...
Page 283: ...23 PAPER FEED CONTROL BOARD A009 May 1 87 46 ...
Page 285: ...24 AC MAIN HARNESS A009 May 1 87 48 ...
Page 287: ...25 DC MAIN HARNESS A009 May 1 87 50 ...
Page 289: ...26 HARNESS 3RD FEED A009 May 1 87 52 ...
Page 291: ...27 FUSING UNIT HARNESS A009 5 4 ...
Page 293: ...28 CONTROL HARNESS A009 May 1 87 5 6 ...
Page 295: ...29 HARNESS PAPER FEED A009 May 1 87 5 8 ...
Page 297: ...30 SPECIAL TOOL A009 May 1 87 60 ...
Page 299: ...PARTS INDEX 63 ...
Page 322: ...CS2070 A414 ...
Page 323: ...l Mini Sorter A414 2 2 Bin Motor Board A414 4 3 Sorter Harness A414 6 Parts Index 9 1 ...
Page 324: ...1 MINI SORTER A414 May 1 87 2 ...
Page 326: ...2 BIN MOTOR BOARD A414 May 1 87 4 ...
Page 328: ...3 SORTER HARNESS A414 May 1 87 6 ...
Page 330: ...PARTS INDEX 9 ...
Page 334: ...DF39 A419 ...
Page 336: ...1 DOCUMENT FEEDER I A419 May 1 87 2 ...
Page 338: ...2 DOCUMENT FEEDER II A419 May 1 87 4 ...
Page 340: ...3 DOCUMENT FEEDER Ill A419 May 1 87 6 ...
Page 342: ...4 DF MAIN BOARD A419 May 1 87 8 ...
Page 344: ...5 DF HARNESS A419 May 1 87 10 ...
Page 346: ...PARTS INDEX 13 ...
Page 353: ...RT15 A912 ...
Page 355: ...1 LCT A912 May 1 87 2 ...
Page 357: ...2 L C T A 9 1 2 May 1 87 4 ...
Page 359: ...3 LCT Ill A912 May 1 87 ...
Page 361: ...4 LCT BOARD A912 May 1 87 8 ...
Page 363: ...5 LCT HARNESS A912 May 1 87 10 ...
Page 365: ...PARTS INDEX 13 ...