Ricoh B121 Service Manual page 437

1. INSTALLATION................................................................................1
1.1 CAUTIONS AND WARNINGS...................................................................... 1
1.2 ACCESSORY CHECK ................................................................................. 2
1.3 INSTALLATION ............................................................................................ 3
2. TROUBLESHOOTING .....................................................................7
2.1 ERROR CODES........................................................................................... 7
2.2 FAX SC CODES......................................................................................... 14
2.2.1 OVERVIEW ....................................................................................... 14
2.2.2 SC1201.............................................................................................. 14
2.2.3 FAX SC CODE TABLE ...................................................................... 14
3. SERVICE TABLES.........................................................................15
3.1 SERVICE PROGRAM MODE..................................................................... 15
3.1.1 SERVICE PROGRAM MODE OPERATION...................................... 15
Entering and Exiting SP mode ............................................................... 15
SP2-XXX (RAM) .................................................................................... 16
SP3-XXX (Machine Set) ........................................................................ 17
SP4-XXX (ROM Versions) ..................................................................... 17
SP5-XXX (RAM Clear)........................................................................... 18
SP6-XXX (Reports)................................................................................ 18
SP7-XXX (Tests) ................................................................................... 19
3.2 BIT SWITCHES .......................................................................................... 20
3.2.1 SYSTEM SWITCHES ........................................................................ 20
3.2.2 IFAX SWITCHES............................................................................... 31
3.2.3 PRINTER SWITCHES ....................................................................... 31
3.2.4 COMMUNICATION SWITCHES........................................................ 36
3.2.5 G3-1 SWITCHES............................................................................... 41
3.2.6 FAX SWITCHES................................................................................ 49
3.3 NCU PARAMETERS .................................................................................. 51
3.4 DEDICATED TRANSMISSION PARAMETERS ......................................... 61
3.4.1 PROGRAMMING PROCEDURE ....................................................... 61
3.4.2 PARAMETERS .................................................................................. 62
3.5 SERVICE RAM ADDRESSES.................................................................... 65
4. DETAILED SECTION DESCRIPTIONS .........................................73
4.1 OVERVIEW ................................................................................................ 73
4.2 BOARDS .................................................................................................... 74
4.2.1 FCU ................................................................................................... 74
4.2.2 MBU................................................................................................... 75
SM
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