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PCBS
B040
6-2
SM
6.2 PCBS
6.2.1 FCU
The FCU (Facsimile Control Unit) controls fax communications, the video interface
to the base copier’s engine, and all the fax options.
FACE2
•
CPU
•
Data compression and reconstruction (DCR)
•
DMA control
•
Clock generation
•
DRAM backup control
•
Ringing signal/tone detection
•
Video and command interface to the BiCU (VIF)
Modem (Rockwell R288F)
•
V.34, V33, V17, V.29, V.27ter, V.21, and V.8
FCU
CPU (RU30)
D R A M
(8MB)
V . 3 4 M O D E M
DMA BUS
Bus Interface
Parallel Interface
Analog Circuit
N C U
Monitor
Speaker
BiCU
CPU BUS
VIF
Flash ROM
(3MB)
S R A M
(128kB)
D C R
FACE2
B404D535.WMF
Summary of Contents for LD013
Page 1: ...001129MIU SERVICE MANUAL B039 B040 B043 B120 RICOH GROUP COMPANIES...
Page 2: ......
Page 3: ...SERVICE MANUAL B039 B040 B043 B120 RICOH GROUP COMPANIES...
Page 4: ......
Page 5: ...B039 B040 B043 B120 SERVICE MANUAL 001129MIU...
Page 6: ......
Page 8: ......
Page 10: ......
Page 26: ......
Page 30: ......
Page 31: ...INSTALLATION...
Page 32: ......
Page 61: ...PREVENTIVE MAINTENANCE...
Page 62: ......
Page 66: ......
Page 67: ...REPLACEMENT AND ADJUSTMENT...
Page 68: ......
Page 124: ......
Page 125: ...TROUBLESHOOTING...
Page 126: ......
Page 140: ...SERVICE TABLES...
Page 141: ......
Page 192: ...DETAILED SECTION DESCRIPTIONS...
Page 193: ......
Page 269: ......
Page 270: ...AUTO REVERSE DOCUMENT FEEDER B379...
Page 271: ......
Page 300: ...DOCUMENT FEEDER B387...
Page 301: ......
Page 323: ......
Page 324: ...PAPER TRAY UNIT B384...
Page 325: ......
Page 344: ...PAPER TRAY UNIT B385...
Page 345: ......
Page 361: ......
Page 362: ...SPECIFICATIONS...
Page 363: ......
Page 373: ...B120 RLA only...
Page 374: ......
Page 378: ......
Page 379: ...FAX UNIT B404...
Page 380: ......
Page 382: ......
Page 383: ...INSTALLATION...
Page 384: ......
Page 392: ......
Page 393: ...PREVENTIVE MAINTENANCE...
Page 394: ......
Page 396: ......
Page 397: ...REMOVAL AND REPLACEMENT...
Page 398: ......
Page 402: ......
Page 403: ...TROUBLESHOOTING...
Page 404: ......
Page 416: ...SERVICE TABLES...
Page 417: ......
Page 489: ......
Page 490: ...DETAILED SECTION DESCRIPTIONS...
Page 491: ......
Page 497: ......
Page 498: ...SPECIFICATIONS...
Page 499: ......
Page 510: ...FIRMWARE HISTORY...
Page 511: ......