15 March 1987
DEFECTIVE SENSOR TABLE
No.
Name
Condition
Problem
S1 Lens Home Position
S2 Pulse Generator
S3 Toner End
S4 Manual Feed
S5 Color Toner
S6 First Paper End
S7 Second Paper End
Open
Short
Open
Short
Open
Short
Open
Short
Open
Short
Open
Short
Open
Short
Lights SC NO. 29 when the main
switch is turned on.
Lights SC No. 28 when the main
switch is turned on.
Lights SC No. 61 during the copy
cycle.
Same as open condition.
The CPU never detects toner end
condition.
Lights “Add Toner” indicator even
when enough toner is present.
Lights “Manual Feed” indicator even
when the manual feed table is
closed.
Never lights “Manual Feed”
indicator and the manual feed mode
does not works.
“Color Toner” does not turn on when
there is a color development unit in
the machine.
Lights “Color Toner” indicator when
the main switch is turned on.
Lights “Load Paper” indicator even
when paper is present.
Never lights “Load Paper” indicator
even when paper is not present.
Same as S6.
Same as S6.
9-30
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 ...