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PCBS
2-32
A230/A231/A232
SM
VPC
•
Video and command interface to the BiCU
Modem (Matsushita: MN195003MFL)
•
V.34, V17, V.29, V.27ter, V.21, and V.8
Energy Saver CPU
•
Power distribution control in energy saver mode
ROM
•
2MB (16 Mbit) flash ROM for system software storage
DRAM
•
The 6 MB of DRAM is shared between SAF Memory (2 MB), ECM Buffer
(128 KB), Page Memory (2 MB), Working Memory (384 kB), and Line buffer
etc (512 kB). The remaining 1 MB of memory is not used.
•
The 2 MB of SAF memory is backed up by the rechargeable battery.
SRAM
•
The 128 KB SRAM for system and user parameter storage is backed up by
the lithium battery.
Oscillators
•
42.20545MHz oscillator for system clock generation
•
32.768MHz oscillator for the real time clock. This is backed up by the lithium
battery.
•
24.192MHz oscillator for the MN195003MFL modem
Jumpers, Switches, and Test Points
Item
Description
SW1
Switches the SRAM backup battery on/off
SW2
Reset switch
SW3
Switches the data transfer direction
Summary of Contents for A230
Page 1: ...SERVICE MANUAL 000861MIU A230 A231 A232 RICOH GROUP COMPANIES ...
Page 2: ...SERVICE MANUAL A230 A231 A232 RICOH GROUP COMPANIES ...
Page 3: ...A230 A231 A232 SERVICE MANUAL 000861MIU ...
Page 4: ......
Page 6: ......
Page 8: ......
Page 10: ......
Page 35: ......
Page 39: ......
Page 40: ...OVERALL MACHINE INFORMATION ...
Page 41: ......
Page 62: ...DETAILED SECTION DESCRIPTIONS ...
Page 63: ......
Page 139: ......
Page 140: ...INSTALLATION ...
Page 141: ......
Page 208: ...SERVICE TABLES ...
Page 209: ......
Page 280: ...PREVENTIVE MAINTENANCE ...
Page 281: ......
Page 285: ...REPLACEMENT AND ADJUSTMENT ...
Page 286: ......
Page 343: ...TROUBLESHOOTING ...
Page 344: ......
Page 383: ...PAPER TRAY UNIT A682 ...
Page 384: ......
Page 403: ...LARGE CAPACITY TRAY A683 ...
Page 404: ......
Page 419: ...BY PASS A689 ...
Page 420: ......
Page 433: ... 1 BIN TRAY A684 ...
Page 434: ......
Page 442: ......
Page 443: ...AUTO DOCUMENT FEEDER A680 ...
Page 444: ......
Page 468: ...ROM HISTORY 12 22 A230 A231 A232 SM B Rev 09 2000 ...
Page 477: ...INTERCHANGE UNIT A690 ...
Page 478: ......
Page 484: ......
Page 485: ... DUPLEX A687 ...
Page 486: ......
Page 498: ......
Page 499: ...BRIDGE UNIT A688 ...
Page 500: ......
Page 507: ...1 000 SHEET FINISHER A681 ...
Page 508: ......
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Page 535: ...3 000 SHEET FINISHER A697 ...
Page 536: ......
Page 571: ...SwapBox and SwapFTL Installation Manual ...
Page 572: ......
Page 583: ...SwapFTL Binary Utility Operation Manual ...
Page 584: ......
Page 595: ...SM A203 231 A232 19 11 3 4 HELP MENU 3 4 1 HELP ABOUT SWAPUTI SwapBox And SwapFTL FUNCTIONS ...
Page 596: ......
Page 597: ...NINE TRAY MAILBOX AND BRIDGE UNIT G909 G912 ...
Page 598: ......
Page 627: ...SCANNER KIT A695 ...
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Page 660: ......
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Page 853: ...TECHNICAL SERVICE BULLETINS ...
Page 857: ...ISDN Unit A816 ...
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Page 900: ......
Page 904: ......
Page 908: ......
Page 909: ...TECHNICAL SERVICE BULLETINS ...
Page 922: ...SwapFTL and SwapFTL Installation Manual ...
Page 933: ...SwapFTL Binary Utility Operation Manual ...
Page 944: ...SM A203 231 A232 19 11 3 4 HELP MENU 3 4 1 HELP ABOUT SWAPUTI SwapBox And SwapFTL FUNCTIONS ...
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