Ricoh Mp C3000 Service Manual
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Service RAM Addresses SM 119 B786 B786 Fax Option 680394(H) - Optional equipment (Read onl y – Do not change the settings) Bit 0: Page Memory 0: Not installed, 1: Installed Bit 1: SAF Memory 0: Not installed, 1: Installed Bits 2 to 7; Not used 680395(H) - Optional equipment (Read onl y – Do not change the settings) Bits 0 to 3: Not used Bit 4: G3-2 0: Not installed, 1: Installed Bit 5: G3-3 0: Not installed, 1: Installed Bit 6 and 7: Not used 680406 to 68040A – Option G3 board (G3-2) ROM information (Read only) 680406(H) - Suffix (BCD) 680407(H) - Version (BCD) 680408(H) - Year (BCD) 680409(H) - Month (BCD) 68040A(H) - Day (BCD) 68040B to 68040F – Option G3 board (G3-3) ROM information (Read only) 68040B(H) - Suffix (BCD) 68040C(H) - Version (BCD) 68040D(H) - Year (BCD) 68040E(H) - Month (BCD) 68040F(H) - Day (BCD) 680410(H) - G3-1 Modem ROM version (Read only) 680412(H) - G3-2 Modem ROM version (Read only) 680414(H) - G3-3 Modem ROM version (Read only) 680420(H) - Number of multiple sets print (Read only) 680476(H) - Time for economy transmission (hour in 24h clock format - BCD) 680477(H) - Time for economy transmission (minute - BCD) 680492(H) - Transmission monitor volume 00 - 07(H) 680493(H) - Reception monitor volume 00 - 07(H) 680494(H) - On-hook monitor volume 00 - 07(H) 680495(H) - Dialing monitor volume 00 - 07(H) 680496(H) - Buzzer volume 00 - 07(H) 680497(H) - Beeper volume 00 - 07(H) 6804A8(H) - Machine code (Check ram 4) 688E8E to 68918D(H) - SIP server address (Read only) 688E8E(H) - Proxy server - Main (Max. 128 characters - ASCII)
Service RAM Addresses B786 120 SM 688F0E(H) - Proxy server - Sub (Max. 128 characters - ASCII) 688F8E(H) - Redirect server - Main (Max. 128 characters - ASCII) 68900E(H) - Redirect server - Sub (Max. 128 characters - ASCII) 68908E(H) - Registrar server - Main (Max. 128 characters - ASCII) 68910E(H) - Registrar server - Sub (Max. 128 characters - ASCII) 68918E(H) - Gatekeeper server address - Ma in (Max. 128 characters - ASCII) 68920E(H ) - Gatekeeper server address - Sub (Max. 128 characters - ASCII) 68928E(H) - Arias Number (Max. 128 characters - ASCII) 68930E(H) - SIP user name (Max. 128 characters - ASCII) 68938E(H) - SIP digest authentication password (Max. 128 characters - ASCII) 68940E(H) - Gateway address information (Max. 7100 characters - ASCII) 68AFCA(H) - Stand-by port number for H.232 connection 68AFCCH) - Stand-by port number for SIP connection 68AFCE(H) - RAS port number 68AFD0(H) - Gatekeeper port number 68AFD2(H) - Port number of data waiting for T.38 68AFD4(H) - Port number of SIP server 68AFD6(H) - Priority for SIP and H.323 0: H.323, 1: SIP 68AFD7(H) - SIP function 0: Disabled, 1: Enabled 68AFD8(H) - H.323 function 0: Disabled, 1: Enabled 68AFD9(H) - SIP digest authentication function 0: Disabled, 1: Enabled 68AFDA(H) - IP-Fax backup data 00 - 600 (H) 69ECBE(H) - 69ECDE(H) - IMPORTANT: Do not change the values of these RAM addresses. They are not for use in the field. 6BEBFE(H) – IMPORTANT: Do not change the values of these RAM addresses. They are not for use in the field. 6BEBFF(H) – IMPORTANT: Do not change the values of these RAM addresses. They are not for use in the field. 6BEC00(H) – IMPORTANT: Do not change the values of these RAM addresses. They are not for use in the field. 6BEC01(H) – IMPORTANT: Do not change the values of these RAM addresses. They are not for use in the field. 6BEC02(H) – IMPORTANT: Do not change the values of these RAM addresses. They are not for use in the field. 6BEC03 to 6BEC04 – IMPORTANT: Do not change the values of these RAM addresses. They are not for use in the field. ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ Rev. 04/2007
Service RAM Addresses SM 121 B786 B786 Fax Option 6BEC05(H) – IMPORTANT: Do not change the values of these RAM addresses. They are not for use in the field. 6BEC06(H) – IMPORTANT: Do not change the values of these RAM addresses. They are not for use in the field. ⇒ ⇒ Rev. 04/2007
Overview B786 122 SM 5. DETAILED SECTION DESCRIPTIONS 5.1 OVERVIEW The basic fax unit consists of two PCBs: an FCU and an MBU. The FCU controls all the fax communications and fax features, in cooperation with the controller board. The MBU contains th e ROM and SRAM. Also, the FCU has an NCU circuit. Fax Options: 1. Extra G3 Interface option: This provides one more analog line interface. This allows full dual access. Two extra G3 interface options can be installed. 2. Memory Expansion: This expands the SAF memory and the page memory (used for image rotation); without this expansion, the page memory is not big enough for image rotation at 400 dpi, so transmission at 400 dpi is not possible.
Boards SM 123 B786 B786 Fax Option 5.2 BOARDS 5.2.1 FCU The FCU (Facsimile Control Unit) controls fax communications, the video interface to the base copier’s engine, and all the fax options.. FACE3 (Fax Application Control Engine) ƒ CPU ƒ Data compression and reconstruction (DCR) ƒ DMA control ƒ Clock generation ƒ DRAM backup control Modem (FAME) ƒ V.34, V33, V17, V.29, V.27ter, V.21, and V.8 DRAM ƒ The 16 MB of DRAM is shared as follows. SAF memory : 4MB Working memory : 8MB Page memory : 4MB ƒ The SAF memory is backed up by a rechargeable battery. Memory Back-up ƒ A Rechargeable battery backs up t he SAF memory (DRAM) for 1 hour.
Boards B786 124 SM 5.2.2 MBU On this board, the flash ROM contains the FCU firmware, and the SRAM contains the system data and user parameters. Even if t he FCU is changed, the system data and user parameters are kept on the MBU board. ROM ƒ 3MB flash ROMs for system software storage 2MB (16bit x 1MB) + 1MB (16bit x 512K) SRAM ƒ The 256KB SRAM for system and user para meter storage is backed up by a lithium battery. Memory Back-up ƒ A lithium battery backs up the system parameters and programmed items in the SRAM, in case the base copiers main switch is turned off. Switches Item Description SW1 Switches the SRAM backup battery on/off.
Boards SM 125 B786 B786 Fax Option 5.2.3 SG3 BOARD The SG3 board allows up to three simultaneous communications when used in combination with the FCU and optional G3 boards. The NCU is on the same board as the common SG-3 board. This makes the total board structure smaller. But, the specifications of the SG3 board do not change. NCCP (New Communication Control Processor) ƒ Controls the SG3 board. ƒ CPU (RU30) ƒ DPRAM (Dual Port RAM): Handshaking with the FCU is done through this block. ƒ DMA controller ƒ JBIG ƒ DSP V34 modem (RL5T892): Includes the DTMF Receiver function ƒ DCR for MH, MR, MMR, and JBIG compression and decompression FROM ƒ 1Mbyte flash ROM for SG3 software storage and modem software storage SDRAM ƒ 4Mbyte DRAM shared between ECM buffer, line buffer, and working memory
Boards B786 126 SM AFE (Analog Front End) ƒ Analog processing CODEC (COder-DECoder) ƒ A/D & D/A conversions for modem REG ƒ Generates +3.3 V from the +5V from the FCU
Video Data Path SM 127 B786 B786 Fax Option 5.3 VIDEO DATA PATH 5.3.1 TRANSMISSION Memory Transmission and Parallel Memory Transmission The base copiers scanner scans t he original at the selected resolution in inch format. The BICU processes the data and tr ansfers it to the FCU. ƒ When scanning a fax original, the BICU uses the MTF, independent dot erase and thresholding parameter settings programmed in the fax unit’s scanner bit switches, not the copiers SP modes. Then, the FCU converts the data to mm form at, and compresses the data in MMR or raw format to store it in the SAF memory. If im age rotation will be done, the image is rotated in page memory before compression. At the time of transmission, the FCU decompresses the stored data, then re-compresses
Video Data Path B786 128 SM and/or reduces the data if necessary for transmission. The NCU transmits the data to the line. Immediate Transmission The base copiers scanner scans the original at the reso lution agreed with the receiving terminal. The BICU video processes the data and transfers it to the FCU. ƒ When scanning a fax original, the BICU uses the MTF, independent dot erase and thresholding parameter settings programmed in the fax unit’s scanner bit switches, not the copiers SP modes. Then the FCU stores the data in page memory , and compresses the data for transmission. The NCU transmits the data to the line. JBIG Transmission ƒ Memory transmission: If the receiver has JBIG compression, the data goes from the DCR to the QM-Coder. Then the NCU transmits the data to the line. When an optional G3 unit (SG3) is installed and PSTN2 is se lected as the line type, JBIG compression is available, but only for the PSTN-2 line. ƒ Immediate transmission: If the receiver has JBIG compression, the data goes from the page memory to the QM-Coder. Then the NCU transmits the data to the line. When an optional G3 unit (SG3) is install ed and PSTN2 is selected as the line type, JBIG compression is available, but only for the PSTN-2 line. Adjustments Priority for the line used for G3 transmissions (PSTN 1/PSTN 2 or 3): System switch 16 bit 1