Overall Machine Information - Ricoh A250 Service Manual

1. OVERALL MACHINE INFORMATION ........................................ 1-1

1.1 SPECIFICATIONS .................................................................................... 1-1
1.2 FEATURES............................................................................................... 1-2
1.2.1 FEATURES LIST ............................................................................. 1-2
1.2.2 CAPABILITIES OF PROGRAMMABLE ITEMS ............................... 1-5
1.3 OVERALL MACHINE CONTROL ............................................................. 1-6
1.3.1 SYSTEM CONTROL........................................................................ 1-6
1.3.2 POWER DISTRIBUTION AND CONTROL ...................................... 1-7
1.3.3 MEMORY BACK-UP ........................................................................ 1-7
1.4 VIDEO DATA PATH.................................................................................. 1-8
1.4.1 TRANSMISSION.............................................................................. 1-8
1.4.2 RECEPTION .................................................................................. 1-10
1.4.3 PC FAX COMMUNICATION .......................................................... 1-11
1.4.4 SCANNING AND PRINTING ......................................................... 1-13
2. DETAILED SECTION DESCRIPTIONS....................................... 2-1
2.1 AUTOMATIC SERVICE CALLS................................................................ 2-1
2.1.1 SERVICE CALL CONDITIONS........................................................ 2-1
2.1.2 PERIODIC SERVICE CALL ............................................................. 2-3
2.1.3 PM CALL.......................................................................................... 2-3
2.1.4 EFFECTIVE TERM OF SERVICE CALLS ....................................... 2-3
2.2 SCANNING FEATURES........................................................................... 2-4
2.2.1 PAGE SPLIT TRANSMISSION (BOOK TRANSMISSION) .............. 2-4
2.2.2 IMAGE ROTATION BEFORE TRANSMISSION .............................. 2-5
2.3 PRINTING FEATURES............................................................................. 2-7
2.3.1 PAPER SIZE SELECTION............................................................... 2-7
2.3.2 JUST SIZE PRINTING ................................................................... 2-13
2.4 FAX COMMUNICATION FEATURES..................................................... 2-14
2.4.1 SEP/SUB/PWD/SID ....................................................................... 2-14
2.4.2 JBIG COMPRESSION ................................................................... 2-16
2.4.3 V.8/V.34 PROTOCOL .................................................................... 2-17
2.5 LINE TYPE CHANGE ............................................................................. 2-20
2.6 PCBS ...................................................................................................... 2-21
2.6.1 FCU................................................................................................ 2-21
2.6.2 NCU (US)....................................................................................... 2-23
2.6.3 NCU (EUROPE/ASIA).................................................................... 2-24
2.6.4 EXFUNC BOARD .......................................................................... 2-25
3. INSTALLATION........................................................................... 3-1
3.1 FAX UNIT ................................................................................................. 3-1
3.2 EXFUNC BOARD (FAX FUNCTION UPGRADE) ................................... 3-10
SM
FAX UNIT A891
TABLE OF CONTENTS
i A250