Ricoh A231 Panduan Servis - Halaman 22

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Halaman Cetak

4.2 BIT SWITCHES ...................................................................................... 4-16

4.2.1 SYSTEM SWITCHES .................................................................... 4-16

4.2.2 SCANNER SWITCHES ................................................................. 4-30

4.2.3 PRINTER SWITCHES ................................................................... 4-38

4.2.4 COMMUNICATION SWITCHES .................................................... 4-44

4.2.5 G3 SWITCHES .............................................................................. 4-52

4.3 NCU PARAMETERS .............................................................................. 4-62

4.4 DEDICATED TRANSMISSION PARAMETERS ..................................... 4-73

4.4.1 PROGRAMMING PROCEDURE ................................................... 4-73

4.4.2 PARAMETERS .............................................................................. 4-74

4.5 SERVICE RAM ADDRESSES ................................................................ 4-78

4.6 SPECIAL TOOLS AND LUBRICANTS ................................................... 4-91

5. REMOVAL AND REPLACEMENT .............................................. 5-1

5.1 PRECAUTION .......................................................................................... 5-1

5.2 NCU AND SPEAKER................................................................................ 5-1

5.3 FCU .......................................................................................................... 5-2

5.3.1 REMOVAL ....................................................................................... 5-2

5.3.2 SRAM DATA RESTORE FROM FCU.............................................. 5-2

5.3.3 SRAM DATA RESTORE FROM FLASH CARD BACKUP ............... 5-4

5.4 ROM UPDATE.......................................................................................... 5-6

5.4.1 FCU ROM DOWNLOAD .................................................................. 5-6

5.4.2 FCU ROM UPLOAD ........................................................................ 5-8

5.4.3 MODEM ROM DOWNLOAD............................................................ 5-9

5.5 SRAM DATA BACKUP AND RESTORE ................................................ 5-11

5.5.1 SRAM BACKUP TO A FLASH MEMORY CARD........................... 5-11

5.5.2 SRAM RESTORE FROM A FLASH MEMORY CARD................... 5-12

5.6 DATA ADDRESS RANGES ON THE CARD .......................................... 5-13

5.6.1 FCU AND BICU ROM DATA.......................................................... 5-13

5.6.2 MODEM ROM AND SRAM DATA ................................................. 5-13

6. TROUBLESHOOTING................................................................. 6-1

6.1 ERROR CODES ....................................................................................... 6-1

6.2 MODEM STATUS CODES IN V.34 PROTOCOL DUMP........................ 6-10

6.2.1 CALLING SIDE .............................................................................. 6-10

Phase 1 (V.8) ..................................................................................... 6-10

Phase 2 (Line Probing) ...................................................................... 6-10

Phase 3 (Equalizer Training).............................................................. 6-11

Phase 4 and 5 (Control Channel)....................................................... 6-11

Phase 6 (Primary Channel)................................................................ 6-11

Control Channel (Post Message - Sh)................................................ 6-12

Control Channel (Post Message – PPh) ............................................ 6-12

Control Channel Recovery (AC)......................................................... 6-13

V.34 End ............................................................................................ 6-13

xxi

Rev. 08/98

A230/A231/A232