Kyocera Fax System L Service Manual
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Kyocera Fax System L Service Manual

Kyocera Fax System L Service Manual

Optional fax kit
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Fax System (L)
SERVICE
MANUAL
Published in Mar '05
3JF70762
Revision 2

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Summary of Contents for Kyocera Fax System L

  • Page 1 Fax System (L) SERVICE MANUAL Published in Mar ’05 3JF70762 Revision 2...
  • Page 2 CAUTION DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISPOSE OF USED BATTERIES ACCORDING TO THE MANUFACTURER’S INSTRUCTIONS. ATTENTION IL Y A DANGER D’EXPLOSION S’IL Y A REMPLACEMENT INCORRECT DE LA BATTERIE. REMPLACER UNIQUEMENT AVEC UNE BATTERIE DU MÊME TYPE OU D’UN TYPE REC- OMMANDÉ...
  • Page 3 Revision history Revision Date Replaced pages Remarks July 6, 2004 Contents, 2-2-1 to 2-2-6 March 4, 2005 Contents, 1-1-8, 1-2-1, 1-3-3, 1-3-37, 1-3-38, 1-5-8, 1-6-1, 1-6-2, 2-2-6...
  • Page 4 This page is intentionally left blank.

  • Page 5: Safety Precautions

    Safety precautions This booklet provides safety warnings and precautions for our service personnel to ensure the safety of their customers, their machines as well as themselves during maintenance activities. Service personnel are advised to read this booklet carefully to familiarize themselves with the warnings and precautions described here before engaging in maintenance activities.
  • Page 6 Safety warnings and precautions Various symbols are used to protect our service personnel and customers from physical danger and to prevent damage to their property. These symbols are described below: DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect compliance with warning messages using this symbol.

  • Page 7: Installation Precautions

    1. Installation Precautions WARNING • Do not use a power supply with a voltage other than that specified. Avoid multiple connections to one outlet: they may cause fire or electric shock. When using an extension cable, always check that it is adequate for the rated current..................... •...
  • Page 8 2. Precautions for Maintenance WARNING • Always remove the power plug from the wall outlet before starting machine disassembly....• Always follow the procedures for maintenance described in the service manual and other related brochures............................• Under no circumstances attempt to bypass or disable safety features including safety mechanisms and protective circuits.
  • Page 9 • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself....................... • Do not route the power cable where it may be stood on or trapped. If necessary, protect it with a cable cover or other appropriate item.

  • Page 10: Table Of Contents

    3JF-2 CONTENTS 1-1 Specifications 1-1-1 Specifications ............................1-1-1 1-1-2 Parts names and their functions ......................1-1-4 (1) Main body ............................1-1-4 (2) Operation panel ..........................1-1-5 1-1-3 Mechanical construction ........................1-1-8 1-2 Installation 1-2-1 Unpacking and installation ........................1-2-1 (1) Unpacking and installation ......................1-2-1 1-2-2 Setting and registering data ........................

  • Page 11: Specifications

    1-1-1 Specifications Type ............Optional Fax Kit Compatibility ..........Group 3 Line Requirement ........Subscription telephone line Transmission Speed ........Within 3 seconds (33600 bps, JBIG, ITU-T #1 chart) Modem Speed ........... 33600/31200/28800/26400/24000/21600/19200/16800/14400/12000/9600/ 7200/4800/2400 bps Data Compression ........JBIG/MMR/MR/MH Error Correction ......... ECM Maximum Document Dimensions .....
  • Page 12 Reception functions Manual reception Automatic reception Fax/telephone auto selection TAD reception D.R.D. reception* Remote switching Transmission functions Abbreviated numbers One-touch dialing* Program dialing* Group dialing* Chain dialing* Redialing (manual/automatic) Dial confirmation Communication functions Direct feed transmission Memory transmission Direct reception Memory reception (subaddress-based confidential reception and relay broadcast reception) Additional communication functions...
  • Page 13 Reports Activity report Transmission report Reception report Power failure report Delayed communication report Confirmation report User settings list Encryption key list Management report Department list Abbreviated dial list One-touch key list Telephone directory list Program dial list Group dial list Subaddress confidential box list Subaddress relay box list Encryption box list...

  • Page 14: Parts Names And Their Functions

    1-1-2 Parts names and their functions (1) Main body Figure 1-1-1 1 Operation panel ........Use the operation panel to perform the procedures required for fax communication. 2 Telephone jack (T) ......... Use this jack to connect a separately purchased telephone to the fax. 3 Line jack (L) ...........
  • Page 15 (2) Operation panel & ⁄ ) ( Figure 1-1-2 · › fi fl ‡ ‚ Œ „ ´ ‰ ˆ ˇ Á Ø ∏ ¨ — ‹ ¤ Figure 1-1-3 1-1-5...
  • Page 16 1 Message display ........Operation procedures and indications of trouble, etc., are shown in the message display. 2 Start key ..........Press this key when you want to initiate fax transmission and manual fax reception. 3 Stop/Clear key ........Press this key when you want to revise data that you have entered and return the message display to the previous step.
  • Page 17 23 One-touch keys (No. 1 - No. 32) ..32 one-touch keys are available for use with this fax. Open the cover plate to the right when you want to access one-touch keys No. 1 - No. 20 and open it to the left in order to access one-touch keys No.

  • Page 18: Mechanical Construction

    3JF-2 1-1-3 Mechanical construction MPCB BEEP AGND +2.4V-NiMH LINE TEL1 Figure 1-1-4 The fax system consists of the fax control PCB (FCPCB), NCU PCB (NCUPCB), speaker (SP), backup battery (BUBAT) and optional memory module DIMM. 1-1-8...

  • Page 19: Unpacking And Installation

    3JF-2 1-2-1 Unpacking and installation (1) Unpacking and installation ⁄¤6 @%‹ !#$^ &*() Figure 1-2-1 Unpacking 1 Fax control PCB assembly % One-touch sheet 2 Antistatic air-padded bag ^ One-touch label sheet 3 Side spacer & NW-FAX CD-ROM 4 NCU PCB assembly * Operation guide 5 Antistatic air-padded bag ( Fax label sheet*...
  • Page 20 Turn the machine's power switch to OFF and unplug the machine from the power supply before installing the fax system. <Procedure> Install the optional Memory module DIMM (32MB). 1. Remove the two connectors of the fax control PCB assembly. 2. Remove the three screws and remove the mounting plate and the ground wire.
  • Page 21 Remove the shield cover. 7. Remove the six screws, lift the shield cover and then remove the cover. Shield cover Screws Screws Figure 1-2-4 Remove the modular cover. 8. Remove the screw and take off the modular cover. Screw Modular cover Figure 1-2-5 Attach the fax control PCB assembly.
  • Page 22 11. Connect the YC1 connector on the fax control PCB assembly to the YC15 connector on the engine PCB. 12. Insert the fax control PCB assembly to the shield box so that the projection of the fax control PCB assembly is positioned to the slit of the shield box.
  • Page 23 Attach the modular cover. 16. Attach the modular cover that has been removed by Procedure 8 with the screw to the position shown in the illustration. Screw Modular cover Figure 1-2-10 Install the shield cover. 17. Insert the lower part of the shield cover that has been removed by Procedure 7 into the shield box and then attach it with the six screws and TP tap tight screw M4 ×...
  • Page 24 Attach the operation section sheet for fax. 19. Insert the small screw driver into the two points of the opening and Opening remove the left cover of the operation section. Left cover of the operation section Figure 1-2-13 20. Lift the two pawls and remove the operation section sheet cover. Pawls Operation section sheet cover Figure 1-2-14...
  • Page 25 22. Fit in the right-side two pawls of the operation section sheet cover that has been removed by Procedure 20 and then attach the operation section sheet cover to its original position. Operation section sheet cover Pawl Pawl Figure 1-2-16 Attach the one-touch securing sheet.
  • Page 26 Attach the cover plate. 27. Incurvate the cover plate a little and then insert the upper and lower projections to the fitting parts of the operation section to attach. 28. Check that the cover plate smoothly moves on either side. Projection Cover plate Projection...
  • Page 27 Attach the alphabet labels. 30. Take the alphabet labels from the one-touch label sheet, and Alphabet labels adhere them above the corresponding numeric keys on the operation panel after wiping the panel with alcohol. In Asia and Oceania, use the PQRS TUV WXYZ label, and do not use the PRS TUV WXZ and OPER labels.
  • Page 28 Initialization procedure after installation of facsimile system 1. Insert the machine power plug to the wall outlet and turn the power switch on. 2. Run maintenance item U601. 3. Enter a destination code using the numeric keys (refer to the destination code list) and then press the start key.

  • Page 29: Setting And Registering Data

    1-2-2 Setting and registering data After setting up the machine, set or register the following data. (1) Settings • Setting the type of telephone line* Select the setting (pulse or tone) according to the type of telephone line to be used. •...
  • Page 30 • Setting bulk fax reception Select whether or not to store and then print out the data for an incoming fax in a single batch at the end of the communication. *1: For 120 V specifications only. *2: When the network scanner is installed. *3: When the duplex unit is installed.
  • Page 31 1-3-1 Maintenance mode (1) Maintenance mode item list Item Initial Section Maintenance item contents setting* U600 Initializing all data — U601 Initializing permanent data — U602 Setting factory defaults — U603 Setting the user registration data • Setting the self telephone number —...
  • Page 32 Item Initial Section Maintenance item contents setting U610 Setting the modem output level • Setting the modem output level — • Adjusting the modem output level — U611 G3 cable equalizer • Setting the G3 transmission cable equalizer — • Setting the G3 reception cable equalizer —...
  • Page 33 3JF-2 Item Initial Section Maintenance item contents setting U882 Setting the software switches — U894 Performing board test • Performing test on DRAM — • Performing test on optional memory — Others U917 Setting backup data reading/writing — U926 Rewriting FAX program —...
  • Page 34 (2) Contents of maintenance mode items Maintenance Description item No. U600 Initializing all data Description Initializes software switches and all data in the backup data on the fax control PCB, according to the destination and OEM. Executes the check of the file system, when abnormality of the file system is detected, initializes the file system, communication past record and register setting contents.
  • Page 35 Maintenance Description item No. Destination code list U600 (cont.) Code Destination Code Destination Code Destination Japan South Africa Sweden Australia Thailand France Hong Kong U.S.A. Austria Indonesia South America Switzerland Israel Saudi Arabia Belgium Malaysia CTR21 (European nations) Denmark New Zealand Italy Finland Peru...
  • Page 36 Maintenance Description item No. U602 Setting factory defaults Description Initializes software switches other than that for machine data and the backup data on the fax control PCB, according to the destination and OEM. Purpose To initialize the fax control PCB to the factory default. Method 1.
  • Page 37 Maintenance Description item No. U603 Setting the user registration data Description Makes user settings to enable the use of the MFP as a fax. Purpose To be run after installation of the facsimile kit if necessary. Start 1. Press the start key. The screen for selecting an item is displayed. 2.
  • Page 38 Maintenance Description item No. U604 Clearing data Description Initializes data related to the fax transmission such as transmission history and IDs. Purpose To clear the transmission history or if an ID has been forgotten. Method 1. Press the start key. The screen for selecting an item is displayed. 2.
  • Page 39 Maintenance Description item No. U605 Setting an alarm for when reception is completed (cont.) 1. Enter 1 or 2 using the numeric keys to change the setting. Display Description 1: ON An alarm rings. 2: OFF An alarm does not ring. 2.
  • Page 40 Maintenance Description item No. U605 Setting the continuous detection time for remote switching (cont.) Sets the detection time when continuous detection is selected for remote switching. (This setting item will be displayed, but the setting made is ineffective.) 1. Change the setting using the numeric keys. Description Setting range Continuous detection time for remote switching...
  • Page 41 Maintenance Description item No. U606 Setting the date format (cont.) Selects the date format on the respective reports and sender’s information record. 1. Change the setting using the numeric keys. Display Order 1: YMD Year/month/day 2: MDY Month/day/year 3: DMY Day/month/year 2.
  • Page 42 Maintenance Description item No. U607 Setting the system (communication 1) Description Makes settings for fax transmission regarding the communication. Start 1. Press the start key. The screen for selecting an item is displayed. 2. Select the item to be set using the up/down cursor keys. 3.
  • Page 43 Maintenance Description item No. U607 Setting the mode for remote switching (cont.) Sets the signal detection method for remote switching. Be sure to change the setting according to the type of telephone connected to the machine. 1. Enter 1 or 2 using the numeric keys to change the setting. Display Description 1: ONE...
  • Page 44 Maintenance Description item No. U608 Setting transmission Description Makes settings regarding fax transmission. Start 1. Press the start key. The screen for selecting an item is displayed. 2. Select the item to be set using the up/down cursor keys. 3. Press the start key. The screen for the selected item appears.
  • Page 45 Maintenance Description item No. U608 Setting the waiting period to prevent echo problems at the sender (cont.) Sets the period before a DCS signal is sent after a DIS signal is received. Used when problems occur due to echoes at the sender. 1.
  • Page 46 Maintenance Description item No. U608 Setting the frequency of the CED signal (cont.) Sets the frequency of the CED signal. Used as one of the measures to improve transmission performance for international communications. 1. Enter 1 or 2 using the numeric keys to change the frequency. Display Frequency of the CED signal 1: 2100...
  • Page 47 Maintenance Description item No. U609 Setting the T2 time-out time (cont.) The T2 time-out time decides the following. • From CFR signal output to image data reception • From image data reception to the next signal reception • In ECM, from RNR signal detection to the next signal reception 1.
  • Page 48 Maintenance Description item No. U609 Setting the Tc time-out time (cont.) In the TAD mode, set the time to check if there are any triggers for shifting to fax reception after a connected telephone receives a call. Only the telephone function is available if shifting is not made within the set Tc time. In the TAD mode, change the setting when fax reception is unsuccessful or a telephone fails to receive a call.
  • Page 49 Maintenance Description item No. U610 Setting the modem output level Description Sets the modem output level. Start 1. Press the start key. The screen for selecting an item is displayed. 2. Select the item to be set using the up/down cursor keys. 3.
  • Page 50 Maintenance Description item No. U611 G3 cable equalizer Description Sets the G3 cable equalizer. Start 1. Press the start key. The screen for selecting an item is displayed. 2. Select the item to be set using the up/down cursor keys. 3.
  • Page 51 Maintenance Description item No. U612 Setting the modem detection level Description Sets the modem detection level. Purpose To improve the transmission performance when a low quality line is used. Method Press the start key. The current setting is displayed. Setting 1.
  • Page 52 Maintenance Description item No. U614 Adjusting the DTMF output level Description Adjusts the DTMF output level of a push-button dial telephone. Purpose No change is necessary from the factory default. Start 1. Press the start key. The screen for selecting an item is displayed. 2.
  • Page 53 Maintenance Description item No. U615 Setting the NCU Description Makes setting regarding the network control unit (NCU). Purpose To be set when installing the facsimile kit. Start 1. Press the start key. The screen for selecting an item is displayed. 2.
  • Page 54 Maintenance Description item No. U615 Setting for a PBX (cont.) Selects the mode to connect an outside call when connected to a PBX. According to the type of the PBX connected, select the mode to connect an outside call. 1. Change the setting using the numeric keys. Display Description 1: EARTH...
  • Page 55 Maintenance Description item No. U617 Outputting lists Description Outputs a list of data regarding fax transmissions. Purpose To check conditions of use, settings and transmission procedures of the fax. Method 1. Press the start key. The screen for selecting an item is displayed. 2.
  • Page 56 Maintenance Description item No. U650 Setting the system 1 Description Makes settings for fax reception regarding the sizes of the fax paper and received images and automatic printing of the protocol list. Start 1. Press the start key. The screen for selecting an item is displayed. 2.
  • Page 57 Maintenance Description item No. U650 Setting the number of lines to be ignored when receiving a fax (A4R, letter) in the auto reduction mode (cont.) Sets the maximum number of lines to be ignored if the received data volume exceeds the recording capacity when the data is recorded in the auto reduction mode onto A4R or letter-size paper under the conditions below.
  • Page 58 Maintenance Description item No. U651 Setting the system 2 Description Sets the variation range in rotation reception and the number of adjustment lines for automatic reduction. Start 1. Press the start key. The screen for selecting an item is displayed. 2.
  • Page 59 Maintenance Description item No. U660 Setting the system (communication 2) Description Makes settings for fax transmission regarding the communication. Purpose To reduce transmission errors when a low quality line is used. Start 1. Press the start key. The screen for selecting an item is displayed. 2.
  • Page 60 Maintenance Description item No. U660 Setting the CNG detection times in the fax/telephone auto select mode (cont.) Sets the CNG detection times in the fax/telephone auto select mode. 1. Change the setting using the numeric keys. Display Description 1: 1 TIME Detects CNG once.
  • Page 61 Maintenance Description item No. U670 Setting the system (communication 3) Description Makes settings for fax transmission regarding the communication. Purpose To reduce transmission errors when a low quality line is used. Start 1. Press the start key. The screen for selecting an item is displayed. 2.
  • Page 62 Maintenance Description item No. U670 Setting the V.34 symbol speed (2800 Hz) (cont.) Sets if the V.34 symbol speed 2800 Hz is used. 1. Enter 1 or 2 using the numeric keys to change the setting. Display Description 1: ON V.34 symbol speed 2800 Hz is used.
  • Page 63 Maintenance Description item No. U882 Setting the software switches Description Sets the software switches on the fax control PCB individually. Purpose Use to change the setting when a problem such as split output of received originals occurs. Since the communication performance is largely affected, normally this setting need not be changed. Method 1.
  • Page 64 Maintenance Description item No. U882 List of Software Switches of Which the Setting Can Be Changed (cont.) <System setting> Item One-touch name and telephone number display on the destination check screen Communication end buzzer after reception Ringer frequency detection method Top-bottom inversion in duplex reception F code check in NW-FAX reception Transfer of polling-received originals to PC...
  • Page 65 Maintenance Description item No. U882 List of Software Switches of Which the Setting Can Be Changed (cont.) <Communication time setting> Item 76543210 T3 timeout setting 76543210 T4 timeout setting (automatic equipment) 76543210 T5 timeout setting 76543210 Time before transmission of CNG (1100 Hz) signal 76543210 T0 timeout setting (manual equipment) Phase C timeout in ECM reception...
  • Page 66 Maintenance Description item No. U894 Performing board test Description Performs tests on the DRAM (image memory, bitmap memory) and optional memory on the fax control PCB. Purpose To check if reading and writing are performed correctly in respective installed memories. Start 1.
  • Page 67 3JF-2 Maintenance Description item No. U917 Setting backup data reading/writing Description Stores backup data from the fax control PCB into Compact Flash or reads the data from Compact Flash. Purpose To store and write data when replacing the PCB. Setting 1.
  • Page 68 3JF-2 Maintenance Description item No. U926 Rewriting FAX program Description Downloads the fax program and fax fonts. Purpose To run when upgrading the fax program and fax fonts. Setting 1. Turn the power switch off and disconnect the power plug. 2.

  • Page 69: Error Codes

    1-4-1 Error codes (1) Error code Error codes are listed on the communication reports, activity report, etc. The codes consist of an error code indication “U” followed by a 5-digit number. (Error codes for V34 communication errors start with an “E” indication, followed by five digits.) The upper three of the five digits indicate general classification of the error and its cause, while the lower two indicate the detailed classification.
  • Page 70 (2) Table of general classification Error code Description U00000 No response or busy after the set number of redials. U00100 Transmission was interrupted by a press of the stop/clear key. U00200 Reception was interrupted by a press of the stop/clear key. U00300 Recording paper on the destination unit has run out during transmission.
  • Page 71 Error code Description U03500 In confidential polling reception, the specified confidential box No. was not registered in the destination. Or, in interoffice subaddress-based bulletin board reception, the specified Subaddress confidential box number was not registered in the destination unit. Or, the destination was being accessed.
  • Page 72 (2-1) U004XX error code table: Interrupted phase B Error code Description U00420 A relay request was received from the host center but interrupted because of a mismatch in permit ID or telephone number. U00421 Subaddress-based relay reception was interrupted because of a mismatch in the specified subaddress relay box number.
  • Page 73 (2-2) U006XX error code table: Problems with the unit Error code Description U00600 The document processor cover is open. U00601 Document jam or the document length exceeds the maximum. U00602 Image scanning section problem. U00603 No document feed. U00604 Document length exceeded the limit of the bitmap memory capacity. U00610 Recording section cover is open.
  • Page 74 (2-5) U010XX error code table: G3 transmission Error code Description U01000 An FTT signal was received for a set number of times after TCF signal transmission at 2400 bps. Or, an RTN signal was received in response to a Q signal (excluding EOP) after transmission at 2400 bps.
  • Page 75 Error code Description U01045 A DCN or other inappropriate signal was received after transmission of an MPS signal. U01046 A DCN or other inappropriate signal was received after transmission of an EOM signal. U01047 A DCN or other inappropriate signal was received after transmission of an EOP signal. U01048 A DCN signal was received after transmission of a PRI-EOP signal.
  • Page 76 (2-6) U011XX error code table: G3 reception Error code Description U01100 Function of the unit differs from that indicated by a DCS signal. U01101 Function of the unit (excl. communication mode select) differs from that indicated by an NSS signal. U01102 A DTC (NSC) signal was received when no transmission data was in the unit.
  • Page 77 Error code Description U01191 Communication was interrupted because an error occurred during an image data reception sequence in the V.34 mode. U01199 A DIS signal with different FIF was received after transmission of a DIS signal. 1-4-9...
  • Page 78 (2-7) U017XX error code table: V.34 transmission Error code Description U01700 A communication error occurred in phase 2 (line probing). U01720 A communication error occurred in phase 4 (modem parameter exchange). U01721 Operation was interrupted due to the absence of a common communication speed between units.
  • Page 79 1-5-1 Self-diagnosis (1) Self diagnostic codes Remarks Code Contents Causes Check procedures/corrective measures Fax control PCB system problem Defective fax con- Replace the fax control PCB and check for C0030 • Processing with the fax software was trol PCB. correct operation. disabled due to a hardware or soft- ware problem.
  • Page 80 Remarks Code Contents Causes Check procedures/corrective measures Fax control PCB program archive Defective fax con- Replace the fax control PCB and check for C0880 problem* trol PCB. correct operation. • When power is turned on, the com- pressed program in the Flash ROM on the fax control PCB was not suc- cessfully decompressed.
  • Page 81 1-5-2 Troubleshooting Remarks Contents Causes Corrective measures An error message is displayed on the com- puter screen while transmission is per- formed. “Network error has occurred.” A connection error Connect the scanner NIC properly. of scanner NIC oc- curred while data was transmitted.
  • Page 82 Remarks Contents Causes Corrective measures “The FAX is in use.” Copying is being Retransmit after the cause described left is performed. cleared. Fax printing is being performed. Fax setting is being performed. Received originals are being transmit- ted. Remote diagnosis is being performed.
  • Page 83 Remarks Contents Causes Corrective measures Mail notification related The mail address of Register the mail address of the fax adminis- Transmission report is not delivered to clients. the fax administrator trator or the scanner administrator. or the scanner ad- ministrator is not registered.
  • Page 84 Remarks Contents Causes Corrective measures Activity report, restricted access report, power The IP address or Check the registered IP address and host failure report or backup RAM error report is not host name regis- name of mail server. delivered to the administrator. tered in the scanner initial setting is not correct.
  • Page 85 Remarks Contents Causes Corrective measures Received originals are not stored. The Scanner File Start the storage destination computer and (including reception report) Utility of the storage start the Scanner File Utility. destination com- puter has not started. The network cable Connect the network cable properly.
  • Page 86 3JF-2 Remarks Contents Causes Corrective measures The address book cannot be started. If the address book Restart the computer and start the address finishes abnormally book. because of any rea- son, the address book information may remain. The toolbar is not displayed. If “Toolbar”...

  • Page 87: Upgrading The Firmware On The Fax Control Pcb

    3JF-2 1-6-1 Upgrading the firmware on the fax control PCB Firmware upgrading requires the following tools: Compact Flash (Products manufactured by SANDISK are recommended.) NOTE When writing data to a new Compact Flash from a computer, be sure to format it in advance. Procedure 1.
  • Page 88 3JF-2 6. Turn on the power switch. Connect the power plug while pressing the Copier key to ignore the detection of Compact Flash. Press and hold on the Copier key until the message “Please wait.” disappears. Figure 1-6-3 7. Enter the maintenance mode and select U926 using the cursor up/down keys or numeric keys. Press the start key. 8.
  • Page 89 2-1-1 Electrical parts layout Figure 2-1-1 1. Fax control PCB (FCPCB) ......Modulates, demodulates, compresses, decompresses and smoothes out image data, and converts resolution of image data. • Memory module DIMM* ......Expands memory capacity for image data and bitmap conversion. 2.

  • Page 90: Fax Control Pcb

    3JF-1 2-2-1 Fax control PCB FAX control PCB Backup battery Lithium battery (NiMH) backup circuit SDRAMs Lithium 4M ◊ 16 bit ◊ 2 2.4 V battery Backup (upper/lower) circuit 44 MHz U021 3.3 V 3.3 V Backup U022 Oscillator circuit 32 bit power 1.9 V...
  • Page 91 3JF-1 YC10 Figure 2-2-2 Fax control PCB silk-screen diagram 2-2-2...
  • Page 92 3JF-1 Connector Pin No. Signal Voltage Description _WAKEUPFAX 3.3/0 V DC _WAKEUPFAX signal _FAXSET 3.3/0 V DC _FAXSET signal Connected MAIN_RXD 3.3/0 V DC (pulse) MAIN_RXD signal to the main _FAXREADY 3.3/0 V DC _FAXREADY signal PCB. _SREQ 3.3/0 V DC _SREQ signal _FPVD 3.3/0 V DC...
  • Page 93 3JF-1 Connector Pin No. Signal Voltage Description +12V 12 V DC +12 V DC power supply Ground Connected 5 V DC 5 V DC supply to the NCU Ground PCB. EXTRING1 Not used EXTRING2 Not used KMUTE 3.3/0 V DC KMUTE signal SHUNT 3.3/0 V DC...

  • Page 94: Ncu Pcb

    3JF-1 2-2-2 NCU PCB Destination NCUTYPE identification circuit 1, 2, 3 JP20, JP21, JP22 /ONHOOK1 LINE2 Loop current /ONHOOK2 detection/tone signal RXIN reception circuit IC30 LINE1 FAXSEL TEL GND Ground start circuit PC10 MODRXD Line Accounting transformer TEL2 pulse elimination MODTXD circuit SHUNT...
  • Page 95 3JF-2 MCN2 MCN1 Figure 2-2-4 NCU PCB silk-screen diagram Connector Pin No. Signal Voltage Description RXIN Analog RXIN signal MODRXD Analog MODRXD signal Connected _RNGDET 3.3/0 V DC Ring signal to the fax MODTXD Analog MODTXD signal control _ONHOOK1 5/0 V DC _ONHOOK1 signal PCB.

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