Oki MPS4242mc Maintenance Manual
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Oki MPS4242mc Maintenance Manual

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MC770 / MC780
MPS3537mc / MPS4242mc
GD-1340 FAX Unit
Maintenance Manual
060313A

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Summary of Contents for Oki MPS4242mc

  • Page 1 MC770 / MC780 MPS3537mc / MPS4242mc GD-1340 FAX Unit Maintenance Manual 060313A...
  • Page 2 Oki Data CONFIDENTIAL Document Revision History Corrected items Person in Rev.No. Date charge Page Description of change 2013-04-10 ISSUE P2E1 T. Asaba ii / 45585001TH Rev.1...
  • Page 3 • Other company names and product names in this manual are the trademarks of their respective companies. © 2013 OKI DATA CORPORATION All rights reserved Under the copyright laws, this manual cannot be reproduced in any form without prior written permission of OKI DATA CORPORATION.
  • Page 4 Oki Data CONFIDENTIAL GeNeRaL PReCaUTIONs ReGaRDING THe seRVICe FOR GD-1340 The installation and service shall be done by a qualified service technician. 1) Transportation/Installation - When transporting/installing the equipment, employ two or more persons and be sure to hold the positions as shown in the figure. The equipment is quite heavy and weighs approximately 60 kg (132.27 lb.) (including the finisher), therefore pay full attention when handling it.

  • Page 5: Cautionary Labels

    Be sure to handle/install them properly. If these parts are short-circuited and their functions become ineffective, they may result in fatal accidents such as burnout. Do not allow a short-circuit or do not use the parts not recommended by OKI DATA Corporation.

  • Page 6: Table Of Contents

    Oki Data CONFIDENTIAL CONTeNTs 1. sPeCIFICaTIONs aND OUTLINe OF sYsTem ..........1-1 1.1 FAX Options ....................1-1 1.2 Specifications ....................1-2 1.3 Features .......................1-5 1.4 Accessories and Parts ................. 1-7 1.5 Options ......................1-8 1.6 System List ....................1-9 1.7 Overview ....................1-10 1.8 Layout of PC Boards .................. 1-11 2.

  • Page 7: Specifications And Outline Of System

    Oki Data CONFIDENTIAL 1. sPeCIFICaTIONs aND OUTLINe OF sYsTem 1.1 FAX Options Equipments can be used as a FAX by installing the FAX unit. Some options can be added when the FAX unit is installed or to extend the FAX functions.

  • Page 8: Specifications

    Oki Data CONFIDENTIAL 1.2 Specifications 1) Main +system Type Desktop type transceiver Operation Transmission Manual/Automatic Reception Manual/Automatic 2) Scanner <Scanning density> [ ]: at rotation transmission Horizontal direction 16 lines/mm, 8 lines/mm [15.4 lines/mm, 7.7 lines/mm, 3.85 lines/mm] Vertical direction 15.4 lines/mm, 7.7 lines/mm, 3.85 lines/mm...
  • Page 9 Oki Data CONFIDENTIAL 3) Transmission system Circuits to be used: subscriber line/FaX communication network (G3) - Calling automatic transmission (including the sequential multi-address transmission) - Calling automatic reception (polling reception) - Called automatic transmission (polling transmission) - Called automatic reception...
  • Page 10 Oki Data CONFIDENTIAL 4) Recording paper Recording method Electrophotographic recording method by LED Horizontal printing density 24 lines/mm (96 lines/mm with the smoothing processing) [23.1 lines/mm (92.4 lines/mm with the smoothing processing)] Vertical printing density 23.1 lines/mm (24 lines/mm with the smoothing processing)

  • Page 11: Features

    Oki Data CONFIDENTIAL 1.3 Features • High-speed transmission 33.6 Kbps high speed modem Original high-speed communication modes EX and HS JBIG encoding system • Dual Access FAX transmission There are two types of FAX transmission: Page-by-page direct transmission and memory transmission that all pages are stored in the memory before being transmitted.
  • Page 12 Oki Data CONFIDENTIAL Choose from the Phone Book (up to 400 destinations) Direct dialing (up to 400 destinations) Mix operation (Phone Book, Direct dialing, Group destinations: up to 400 destinations) • Memory reception function When the recording paper has run out or a paper jam has occurred, the memory receives and stores the data.

  • Page 13: Accessories And Parts

    Oki Data CONFIDENTIAL 1.4 Accessories and Parts The following accessories and parts come with the FAX unit: Accessory GD-1340 Modular cord (2 m) 1 pc. Unpacking instruction 1 set Parts GD-1340 Fax unit 1 pc. SG3 label 1 pc. FCC Part 68 label (U.S.A.) / IC label (Canada): NA only...

  • Page 14: Options

    Oki Data CONFIDENTIAL 1.5 Options Extends the FAX functions when the FAX unit is installed. Option Function MC760/MC770/MC780 Finisher Sorts out documents to be output 45372301 for the FAX/copying operation (MJ-1038) 1-8 / 45585001TH Rev.1...

  • Page 15: System List

    Oki Data CONFIDENTIAL 1.6 System List IC Card Reader(F) 45535901 (KP-2006) Antenna IC Card Reader(H) 45518001 45518501 (GN-3010) (KP-2004) IC Card Reader(M) Wireless LAN module 45518601 45517901 (KP-2005) (GN-1060) Meta Scan Enabler 45518201 Inner Finisher (GS-1010) 45372301 (MJ-1038) External Interface...

  • Page 16: Overview

    Oki Data CONFIDENTIAL 1.7 Overview Power switch HANDSET TEL connector LINE connector LINE LINE COIN Fig. 1-3 Fig. 1-4 1-10 / 45585001TH Rev.1...

  • Page 17: Layout Of Pc Boards

    Oki Data CONFIDENTIAL 1.8 Layout of PC Boards Fig. 1-5 Rear side of the equipment Symbol Name Function FAX board Controls the FAX function NCU board Control the line of telephone 1-11 / 45585001TH Rev.1...

  • Page 18: Led-Related Functions

    Oki Data CONFIDENTIAL 2. LeD-ReLaTeD FUNCTIONs 2.1 Recording Mode This machine offers various printing modes such as the selection of the applicable recording paper and the recording method, etc. to meet users’ needs. To take full advantage of these features, it is important to understand the concepts of the recording paper selection algorithm and printing algorithm as described in 2.

  • Page 19: Recording Paper Selection Algorithm And Printing Algorithm

    Oki Data CONFIDENTIAL 2.2 Recording Paper Selection Algorithm and Printing Algorithm Before printing the received image, the preset settings are evaluated in the order of the following 1) and 2), and the printing is performed based on the result. 1) Recording paper selection algorithm Basically, the received image is printed on a sheet of paper of the same size as the original.
  • Page 20 Oki Data CONFIDENTIAL Discard / Vertical reduction / Regular size reduction / split printing flow chart START Recording paper of the same Smaller size paper Larger size paper size as the original's available? available? available? Recording paper run out Regular size...
  • Page 21 Oki Data CONFIDENTIAL 1) Discard printing Since the trailing edge area of the original is normally blank, this blank area is cut off to allow the image fit in one sheet in this mode. Image reduction is not performed. Maximum discarding amount:...
  • Page 22 Oki Data CONFIDENTIAL 3) Regular size reduction printing (13–517: 1) When the discard and vertical reduction printing cannot be applied to the received image, and any of the combinations B4 → A4, B4 → B5, B4 → A5, A4 → B5, A4 → A5, COMP →...

  • Page 23: Setting For The Split Recording

    Oki Data CONFIDENTIAL 4) Split printing When the recording data do not fit in a recording paper even if vertical reduction is performed for the recording data length (the recording data length is exceeding the effective printing length of the largest recording paper in the tray installed in the machine), the recording data are divided onto two sheets while vertical reduction is performed.

  • Page 24: Recording Paper And Function

    Oki Data CONFIDENTIAL 2.3 Recording Paper and Function The size of the recording paper on which the received image data are printed is determined according to the presence/absence of the recording paper and the above-mentioned function settings. Relation between the recording paper size and the function settings is described in this section.

  • Page 25: Energy Saver Functions

    Oki Data CONFIDENTIAL 2.4 Energy saver functions The equipment has the following energy saver functions. ・Weekly timer By using this function, the users automatically have the equipment go to the Sleep mode during a specified period of time such as night time.
  • Page 26 Oki Data CONFIDENTIAL ・Auto Sleep mode By using this function, the users automatically have the equipment go to the Sleep mode when it is left inactive for a certain period of time. Pressing the [Power Save] button also has the equipment go to Sleep mode.

  • Page 27: Memory Reception

    Oki Data CONFIDENTIAL 2.5 Memory Reception Basically, the receiving FAX data are once stored in the HDD, then the data are printed out after the reception process is finished. The memory reception is performed until the 1GB HDD (for transmission and reception) becomes full.

  • Page 28: Dialing/Communication Control

    Oki Data CONFIDENTIAL 3. DIaLING/COmmUNICaTION CONTROL 3.1 Circuit Connection and Procedure to Change Mode 3.1.1 Dial call-up transmission to a telephone circuit START Detecting a calling signal? Detecting an off-hook signal? DC circuit closed After detecting the dial tone, or 3.3 seconds elapsed...

  • Page 29: Selection Of The Communication Mode

    Oki Data CONFIDENTIAL 3.1.2 Selection of the communication mode This machine has three types of communication mode. The mode to be used is determined according to the combination of the types of the circuits and communication and available function of the other side’s machine.

  • Page 30: Signaling System Diagram And Signal Forms

    Oki Data CONFIDENTIAL 3.2 Signaling System Diagram and Signal Forms 3.2.1 Circuit control signals The following circuit control signals are used in the binary and tonal procedures. • Circuit control signals Called station identification Indicates that the sender is a FAX machine in the automatic called mode.

  • Page 31: Communication With The Binary Signals

    Oki Data CONFIDENTIAL 3.2.2 Communication with the binary signals In the original procedure/G3 modes, communication is performed with the binary procedure as follows. 3-4 / 45585001TH Rev.1...
  • Page 32 Oki Data CONFIDENTIAL (1) Binary procedure • Transmission and reception in the original procedure/G3 modes Transmtter Receiver Mode change pos s i ble* Informing that there is the next page Fig. 3-1 * Mode change is possible only for the original set manually.
  • Page 33 Oki Data CONFIDENTIAL • Transmission and reception in the ECM mode ECM (Error Correction Mode) conforms to T.30. When an error has occurred to the received image data, the receiving station informs the sending station of the occurrence of the error, and the sending station sends the image data again.
  • Page 34 Oki Data CONFIDENTIAL • Cancellation during the transmission If the [STOP] button is pressed during the direct transmission or memory input, the display to confirm the cancellation appears. The communication is finished normally regardless of the presence/absence of the next page or mode changes by pressing the [STOP] button.
  • Page 35 Oki Data CONFIDENTIAL (2) Binary signals Non-Standard Facility Informs that the receiving station (machine) has a non-standard facility. Non-Standard Facility Command Command to transmit using the non-standard facility which is selected corresponding to NSF (i.e., Polling etc.). Non-Standard Facility Setup Command to transmit using the non-standard facility which is selected corresponding to NSF or NSC.
  • Page 36 Oki Data CONFIDENTIAL Procedure Interrupt Positive Informs that the image signals have been received correctly and requests the operator’s reply by telephone or to return to the beginning of the phase B to continue the communication (i.e., CALL Request, etc.).
  • Page 37 Oki Data CONFIDENTIAL (3) Frame structure of binary signals Each binary signal frame is comprised of the following sequence and fields. However, some binary signals do not have the FIF field inserted. Preample Flag sequence Indicates the start or end of a frame. Also establishes the frame synchronization.
  • Page 38 Oki Data CONFIDENTIAL • FCF format of each binary signal Format Binary signal PWD(Rx) PWD(Tx) PRI-EOM PRI-MPS PRI-EOP • = 1 for the station which received DIS. • = 0 for the station which received a response signal to DIS.
  • Page 39 Oki Data CONFIDENTIAL (4) Training The training is performed in the binary procedure to surely transmit the image signals. • Training signal The training signal is transmitted following the DCS signal at the modem speed specified by the DCS signal. Responding to this training signal, the receiving side adjusts the auto- equalizer.

  • Page 40: V.8/V.34 Communication Sequence

    Oki Data CONFIDENTIAL 3.2.3 V.8/V.34 communication sequence 1) Outline V.8 is performed as a startup procedure to switch to V.34. V.8 can connect an existing facsimile machine to the equipment using a data modem or other V-series modems. The V.34 modem has a modem circuit previously recommended, allowing it to be also connected to the existing modems while they are upper compatible.
  • Page 41 Oki Data CONFIDENTIAL 2) Standard procedure Transmitter Receiver Line closed The available modulation mode is in formed. Each declares that it has V.34 capability. The Network interaction procedure moves to V.34 in the phase 2. ( Phase 1 ) P3-15)
  • Page 42 Oki Data CONFIDENTIAL Network interaction (Phase 1) The V.8 procedure is performed as the startup procedure for the V.34 high-speed modem. In the V.8 procedure, mainly the optimum modulation method (V series modem mode) that can be operated between the transmitter and receiver is determined.
  • Page 43 Oki Data CONFIDENTIAL Probing/Ranging (Phase 2) Examines the line characteristics and sets the parameters for the modulation related items such as the modulating speed. Transmitter Signal name Abbreviation Function Remarks INFO sequence INFO0c Informs the modem Transmission rate: 600 bps...
  • Page 44 Oki Data CONFIDENTIAL Equalizer and echo canceller training (Phase 3) Training (adjustment) is performed according to the parameters set in the phase 2 to optimize the filters such as an equalizer. Transmitter Signal name Abbreviation Function Remarks is a signal made as the...
  • Page 45 Oki Data CONFIDENTIAL Control channel The conventional T.30 procedure is performed. The transmission rate is 1200 bps. Transmitter Signal name Abbreviation Function Remarks Flag flags Maintains the 7E (H) synchronization. Non-standard facilities Receives an NSF sent setting from the receiver. It...
  • Page 46 Oki Data CONFIDENTIAL Primary channel The training is performed according to the parameters set in the phase 4. The transmission rate is 1,200 bps. Transmitter Signal name Abbreviation Function Remarks is a signal that makes a S signal Short training transition from phase S.
  • Page 47 Oki Data CONFIDENTIAL Communication end procedure This procedure is to terminate the communication. The transmission rate is 1,200 bps. Transmitter Signal name Abbreviation Function Remarks Sh signal Short training signal ALT signal E sequence End of procedure signal PPS-EOP The transmission of one page is completed.
  • Page 48 Oki Data CONFIDENTIAL 3) Example of protocol The signals shaded in the following figure are the most important signals in the procedure. Late start The receiver cannot detect CM signal while it is sending the ANSam signal. Therefore, it sends a DIS signal to inform the availability of V.8 support. The transmitter sends a CI signal that causes the receiver to send another ANSam signal which makes the receiver move to the V.8 procedure.
  • Page 49 Oki Data CONFIDENTIAL Multi-page sequence In the same manner as the T.30 procedure, the transmitter sends a PPS-MPS signal after sending the image data. The receiver sends an MCF signal and moves to the next page transmission. Transmitter Receiver Fig. 3-9 3-22 / 45585001TH Rev.1...
  • Page 50 Oki Data CONFIDENTIAL Mode change The transmitter and receiver send a PPS-EOM signal and an MCF signal respectively. Then the receiver and transmitter send a DIS signal and a DCS signal respectively to change the mode. Transmitter Receiver Fig. 3-10 3-23 / 45585001TH Rev.1...
  • Page 51 Oki Data CONFIDENTIAL Change of the image transmission speed by the receiver The receiver sends a PPh signal responding to an Sh signal sent from the transmitter. Then, the image transmission speed is determined according to the MPh sequence sent from the both modems.
  • Page 52 Oki Data CONFIDENTIAL Change of the image transmission speed by the transmitter The transmitter sends a PPh signal after sending the image data. The receiver returns a PPh signal. Then, the image transmission speed is determined according to the MPh sequence sent from the both modems.

  • Page 53: Fax Automatic Switching

    Oki Data CONFIDENTIAL 3.3 FAX Automatic Switching 3.3.1 General functions There are three types of setting for the FAX Auto-Switching Mode Selection: TEL Mode, FAX Mode and TEL/FAX Mode. No-ringing receiving Pseudo ring TEL/FAX mode setting Remote (DP/MF/Manual) (Terminal setting: None)
  • Page 54 Oki Data CONFIDENTIAL <Appended figure> TEL/FAX Fig. 3-13 3-27 / 45585001TH Rev.1...
  • Page 55 Oki Data CONFIDENTIAL • Pseudo ring volume setting (05-9850) Sets the ringing volume of the telephone (pseudo ring) from the speaker. Pseudo bell sound waveform 0.5s 2.5s 480ms 60ms Fig. 3-14 • Pseudo ring-back tone waveform selection (13-722) The waveform can be selected either of the following (a) or (b).
  • Page 56 Oki Data CONFIDENTIAL • ATT setting when RBT is transmitted (13-723): Default: -15 dB (-10 to -15 dBm) • CNG detection (13-725) CNG is detected with a modem. 2.5 seconds (during non-transmission) of the ring-back tone waveform is used as the tone detection mode.
  • Page 57 Oki Data CONFIDENTIAL • Number of detection determination setting (13-726) Checks the duration time of between ON and OFF to avoid sound misdetection, and counts 1 detection time when the period between ON and OFF has been determined. Sets the number of detections to be determined after 1 or 2 times have been counted. (Default: 1) •...

  • Page 58: Electrical Circuits

    Oki Data CONFIDENTIAL 4. eLeCTRICaL CIRCUITs 4.1 Configuration GD-1340 Speaker FAX board Memory Flash ROM CODEC 95C063 4Mbit x 2 4Mbit x 1 MN86064 FAX ASIC V.34 modem TENNESEE DFX336 SYS - FAX I/F harness Fig. 4-1 4-1 / 45585001TH Rev.1...

  • Page 59: Description Of Circuits

    Oki Data CONFIDENTIAL 4.2 Description of Circuits 4.2.1 Configuration This section describes the function of each circuit. The NCU board consists of the transformer, relay, analog switch and other peripheral devices. It controls switching of the line path, generates the dial pulses, detects the line current and ring signal, and monitors the line.
  • Page 60 Oki Data CONFIDENTIAL eU/aU/BR models NCU board REVA REVB Line current detection circuit Dial pulse generation circuit Line TXOUT Analog switch ATT3DB RLY4 RLY3 FAX board Relay CML relay External RXIN telephone Analog switch CNG signal ANSDET detection circuit RLADJ1...

  • Page 61: Line Path Switching Control Circuit

    Oki Data CONFIDENTIAL 4.2.2 Line path switching control circuit Na models NCU board FAX board CML1 IC42 RLY2 +12V CML relay ATT3DB1 ASIC 9,11 Line IC51 Analog switch IC53 TXOUT1 28,29 IC53 IC14 IC52 MODEM RXIN1 External telephone Ring signal...
  • Page 62 Oki Data CONFIDENTIAL eU/aU/BR models NCU board Line current FAX board detection circuit CML1 RLY3 +12V ATT3DB1 IC42 RLADJ11 CML relay ASIC RLADJ21 Analog switch Line RLY4 Relay +12V External telephone Analog switch TXOUT1 28,29 IC14 MODEM RXIN1 Ring signal...

  • Page 63: Dial Pulse Generation Circuit

    Oki Data CONFIDENTIAL 4.2.3 Dial pulse generation circuit Na models NCU board FAX board RLY2 +12V CML relay CML1 Line IC42 ASIC External telephone Ring signal detection circuit Fig. 4-6 The dial pulse generation circuit consists of the diode bridge (DB1), photocoupler (PC1), the ASIC (IC42) on the FAX board and the other peripheral devices.
  • Page 64 Oki Data CONFIDENTIAL eU/aU/BR models NCU board FAX board RLY3 +12V CML relay CML1 IC42 ASIC Line External telephone Line path switching circuit Ring signal detection circuit Fig. 4-7 The dial pulse generation circuit consists of the photocoupler (IC1), the ASIC (IC42) on the FAX board and the other peripheral devices.

  • Page 65: Line Current Detection Circuit

    Oki Data CONFIDENTIAL 4.2.4 Line current detection circuit Na models NCU board FAX board REVA1 IC42 ASIC REVB1 Line Fig. 4-8 The line current detection circuit consists of the photocoupler (PC3), ASIC (IC42) on the FAX board and the other peripheral devices. It detects a dial tone and the hook status of the external telephone from the current flowing through the line.
  • Page 66 Oki Data CONFIDENTIAL eU/aU/BR models NCU board FAX board REVA1 IC42 Line current ASIC detection REVB1 Line Fig. 4-9 The line current detection circuit consists of the line current detection IC (IC2), ASIC (IC42) on the FAX board, and the other peripheral devices. It detects a dial tone and the hook status of the external telephone from the current flowing through the line.

  • Page 67: Ci Detection Circuit

    Oki Data CONFIDENTIAL 4.2.5 CI detection circuit Na models NCU board FAX board +12V RLY2 CML relay CML1 IC42 5VPS Line ASIC Fig. 4-10 The CI detection circuit consists of the photocoupler (PC2), ASIC (IC42) on the FAX board and the other peripheral devices to detect a ring signal input from the telephone line.
  • Page 68 Oki Data CONFIDENTIAL eU/aU/BR models NCU board FAX board RLY3 +12V CML relay CML1 IC42 5VPS Line ASIC Fig. 4-11 The CI detection circuit consists of the photocoupler (PC1), ASIC (IC42) on the FAX board and other peripheral devices to detect a ring signal input from the telephone line.

  • Page 69: Line Monitor Circuit

    Oki Data CONFIDENTIAL 4.2.6 Line monitor circuit Na models NCU board FAX board 25,26 IC14 RLY2 IC51 MODEM CML relay Analog switch IC53 TXOUT1 Line IC53 IC52 IC40 RXIN1 RING +12V IC21 Analog switch MF-SEL 9,11 10 SP-SEL IC42 ATT3DB1...
  • Page 70 Oki Data CONFIDENTIAL eU/aU/BR models NCU board ( Line1 ) FAX board 25,26 IC14 RLY3 MODEM CML relay TXOUT1 Line IC40 Analog RXIN1 RING switch +12V IC21 Analog switch MF-SEL SP-SEL ATT3DB1 IC42 CML1 ASIC VOLSEL0 VOLSEL1 VOLSEL2 IC12 Analog...
  • Page 71 Oki Data CONFIDENTIAL The relation between the signals and sound volume is as follows. Sound volume VOLSEL2 VOLSEL1 VOLSEL0 Max. (7) HIGH HIGH HIGH HIGH HIGH HIGH HIGH Min. (1) HIGH HIGH Silent (0) HIGH HIGH HIGH The monitoring signal whose volume is controlled by IC12 is amplified by the OP amplifier (IC11), then output to the speaker.

  • Page 72: Installation

    Oki Data CONFIDENTIAL 5. INsTaLLaTION 5.1 Explanation to the Users After installing the FAX unit, explain the following items to the user using the Operator’s Manual. With the underlined items, actually demonstrate the operation. Items to be explained • Switches and control panel - Summary of the control panel (FAX functions) - After power is turned OFF, image data are kept in HDD.

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