Page 1
FAX System(U) SERVICE MANUAL Published in October 2010 845JR110 5JRSM060 First Edition...
Page 2
CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS. It may be illegal to dispose of this battery into the municipal waste stream. Check with your local solid waste officials for details in your area for proper disposal. ATTENTION IL Y A UN RISQUE D’EXPLOSION SI LA BATTERIE EST REMPLACEE PAR UN MODELE DE TYPE INCORRECT.
Page 3
Revision history Revision Date Replaced pages Remarks...
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.
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 remove the ozone filter, if any, from the copier except for routine replacement....... • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself......................•...
1-1 Specifications 1-1-1 Specifications Item Specifications Compatibility Communication line Subscriber telephone line Transmission time 3 s or less (33600 bps, JBIG, ITU-T A4 #1 chart) 33600/31200/28800/26400/24000/21600/19200/16800/14400/12000/9600/ Transmission speed 7200/4800/2400 bps Coding scheme JBIG/MMR/MR/MH Error correction Max. width: 11"/297 mm Original size Max.
Page 14
Reception functions Manual reception Automatic reception Fax/telephone auto selection TAD reception D.R.D. reception* Remote switching Transmission functions Chain dial Redial (manual/automatic) Communication functions Direct transmission Memory transmission Bulk fax output Additional communication Broadcast transmission (up to 100 numbers) functions Polling communication Encrypted communication Password check communication Memory forwarding...
Page 15
Reports Send result report Receipt result report Activity report Status page Network FAX Addition of a cover page E-mail reporting of the transmission result Terminal service File name Others Cancelling and sending delayed transmissions (queued) Remote diagnosis Smoothing reception Fax priority printout Common address for the machine and FAX *1: For 120 V specifications only.
1-1-2 Parts names (1) Machine Figure 1-1-1 1. Operation panel 2. Main power switch 3. Controller box cover 4. LINE Connector 5. TEL Connector Note that you cannot automatically receive FAX when turning the main power switch off. To turn the power off, press the Power key on the operation panel. 1-1-4...
1-2 Installation 1-2-1 Installation environment Installation location (Be based on the machine establishment place.) Avoid direct sunlight or bright lighting. Ensure that the photoconductor will not be exposed to direct sunlight or other strong light when removing paper jams. Avoid locations subject to high temperature and high humidity or low temperature and low humidity; an abrupt change in the environmental temperature;...
1-2-2 Unpacking (1) Unpacking Figure 1-2-1 1. Fax assembly 2. Plastic bag 3. Air-padded bag 4. Modular cord 5. Plastic bag 6. Outer case 7. Installation guide 8. Alphabet label 9. Plastic bag *1: 120 V and Australian models only. Caution: See the Installation Guide for installation.
(2) Initialization procedure after installing the facsimile system 1. Insert the machine power plug to the wall outlet and turn the main power switch on. 2. Enter 10871087 using the numeric keys. The machine enters maintenance mode. 3. Run maintenance item U600 using the cursor up/down keys or numeric keys. 4.
Page 22
This page is intentionally left blank. 1-2-4...
1-3 Maintenance Mode 1-3-1 Maintenance mode The machine is equipped with a maintenance function which can be used to maintain and service the machine. (1) Executing a maintenance item Start Enter “10871087” using Maintenance mode is entered. the numeric keys. Enter the maintenance item The maintenance item is selected.
(2) Maintenance modes item list Item Initial Section Content of maintenance item setting U600 Initializing all data U601 Initializing permanent data U603 Setting user data 1 DTMF U604 Setting user data 2 2 (120 V) 1 (220-240 V) U605 Clearing data U610 Setting system 1 Setting the number of lines to be ignored when receiving a...
Page 25
Item Initial Section Content of maintenance item setting U632 Setting communication control 3 Setting the DIS signal to 4 bytes Setting the CNG detection times in the fax/telephone auto 2Time select mode U633 Setting communication control 4 Enabling/disabling V.34 communication Setting the number of times of DIS signal reception Setting the number of times of DIS signal reception Once...
(3) Contents of the maintenance mode items Item No. Description U600 Initializing all data Description Initializes software switches and all data in the backup data on the FAX control PWB, 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 27
Item No. Description U601 Initializing permanent data Description Initializes software switches on the FAX control PWB according to the destination and OEM. Purpose To initialize the FAX control PWB without changing user registration data. Method 1. Press the start key. 2.
Page 28
Item No. Description U604 Setting user data 2 Description Makes user settings to enable the use of the machine as a fax. Purpose Use this if the user wishes to adjust the number of rings that occur before the unit switches into fax receiving mode when fax/telephone auto-select is enabled.
Page 29
Item No. Description U610 Setting 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. Method 1. Press the start key. 2. Select the item to be set. Display Description Cut Line:A4...
Page 30
Item No. Description U610 Setting the number of lines to be ignored when receiving a fax in the auto reduction mode Sets the maximum number of lines to be ignored if the received data volume exceeds the record- ing capacity when the data is recorded in the auto reduction mode. If the number of excess lines is below the setting, those lines are ignored.
Page 31
Item No. Description U611 Setting system 2 Description Sets the number of adjustment lines for automatic reduction. Method 1. Press the start key. 2. Select the item to be set. Display Description Adj Lines Sets the number of adjustment lines for automatic reduction. Adj Lines(A4) Sets the number of adjustment lines for automatic reduction when A4 paper is set.
Page 32
Item No. Description U612 Setting system 3 Description Makes settings for fax transmission regarding operation and automatic printing of the protocol list. Method 1. Press the start key. 2. Select the item to be set using the cursor up/down keys. Display Description Auto Reduct...
Page 33
Item No. Description U615 Setting system 6 Description Makes settings for fax reception regarding the sizes of the fax paper and received images. Purpose To set the maximum recording width and processing method when 11" width fax paper is loaded on an inch specification machine.
Page 34
Item No. Description U625 Setting the transmission system 1 Description Makes settings for the auto redialing interval and the number of times of auto redialing. Purpose Change the setting to prevent the following problems: fax transmission is not possible due to too short redial interval, or fax transmission takes too much time to complete due to too long redial interval.
Page 35
Item No. Description U630 Setting communication control 1 Description Makes settings for fax transmission regarding the communication. Method 1. Press the start key. 2. Select the item to be set. Display Description TX Speed Sets the communication starting speed. RX Speed Sets the reception speed.
Page 36
Item No. Description U630 Setting the waiting period to prevent echo problems at the sender 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 37
Item No. Description U631 Setting communication control 2 Description Makes settings regarding fax transmission. Method 1. Press the start key. 2. Select the item to be set. Display Description ECM TX Sets ECM transmission. ECM RX Sets ECM reception. CED Freq Sets the frequency of the CED signal.
Page 38
Item No. Description U632 Setting communication control 3 Description Makes settings for fax transmission regarding the communication. Method 1. Press the start key. 2. Select the item to be set. Display Description DIS 4Byte Sets the DIS signal to 4 bytes. Num OF CNG(F/T) Sets the CNG detection times in the fax/telephone auto select mode.
Page 39
Item No. Description U633 Setting communication control 4 Description Makes settings for fax transmission regarding the communication. Purpose To reduce transmission errors when a low quality line is used. Method 1. Press the start key. 2. Select the item to be set. Display Description V.34...
Page 40
Item No. Description U633 Setting the number of times of DIS signal reception Sets the number of times to receive the DIS signal to once or twice. Used as one of the correction measures for transmission errors and other problems. 1.
Page 41
Item No. Description U640 Setting communication time 1 Description Sets the detection time when one-shot detection is selected for remote switching. (This setting item will be displayed, but the setting made is ineffective.) Sets the detection time when continuous detection is selected for remote switching. (This setting item will be displayed, but the setting made is ineffective.) Method 1.
Page 42
Item No. Description U641 Setting communication time 2 Description Sets the time-out time for fax transmission. Purpose To improve transmission performance for international communications mainly. Method 1. Press the start key. 2. Select the item to be set. Display Description T0 Time Out Sets the T0 time-out time.
Page 43
Item No. Description U641 Setting the T2 time-out time 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 44
Item No. Description U641 Setting the Tb2 time-out time In the fax/telephone auto select mode, sets the time to start ringing an operator through the con- nected telephone after receiving a call as a fax machine (see figure 1-3-1). In the fax/telephone auto select mode, change the setting when fax reception is unsuccessful or a telephone fails to receive a call.
Page 45
Item No. Description U650 Setting modem 1 Description Sets the G3 cable equalizer. Sets the modem detection level. Purpose Perform the following adjustment to make the equalizer compatible with the line characteristics. To improve the transmission performance when a low quality line is used. Method 1.
Page 46
Item No. Description U651 Setting modem 2 Description Sets the modem output level. Sets the DTMF output level of a push-button dial telephone. Purpose Used if problems occur when sending a signal with a push-button dial telephone. Setting 1. Press the start key. 2.
Page 47
Item No. Description U660 Setting the NCU Description Makes setting regarding the network control unit (NCU). Purpose To be executed as required. Method 1. Press the start key. 2. Select the item to be set. Display Description Exchange Sets the connection to PBX/PSTN. Dial Tone Sets PSTN dial tone detection.
Page 48
Item No. Description U660 Setting busy tone detection When a fax signal is sent, sets whether the line is disconnected immediately after a busy tone is detected, or the busy tone is not detected and the line remains connected until T0 time-out time. Fax transmission may fail due to incorrect busy tone detection.
Page 49
Item No. Description U670 Outputting lists Description Outputs a list of data regarding fax transmissions. Printing a list is disabled either when a job is remaining in the buffer or when [Pause All Print Jobs] is pressed to halt printing. Purpose To check conditions of use, settings and transmission procedures of the fax.
Page 50
Item No. Description U695 FAX function customize Description Sets fax batch transmission ON/OFF. Also changes the print size priority at the time of small size reception. Purpose To be executed as required. Setting 1. Select the setting. Display Description FAX Bulk TX fax batch transmission On/Off A5 Pt Pri Chg Change of print size priority at the time of small size reception...
Page 51
Item No. Description U699 Setting the software switches Description Sets the software switches on the FAX control PWB individually. Purpose 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.
Page 52
Item No. Description U699 <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) 7 Phase C timeout in ECM reception 76543210 Timeout 1 in countermeasures against echo 76543210 Timeout for FSK detection start in V.8 <Modem setting>...
1-4 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 indica- tion, 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.
(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 55
Error code Description U04100 Subaddress-based transmission failed because the destination unit had no subaddress- based reception capability. U04200 In encrypted transmission, the specified encryption box was not registered in the desti- nation unit. U04300 Encrypted transmission failed because the destination unit had no encrypted communi- cation capability.
(2-1) U004XX error code table: Interrupted phase B Error code Description U00430 Polling request was received but interrupted because of a mismatch in permit number. Or, subaddress-based bulletin board transmission request was received but interrupted because of a mismatch in permit ID in the transmitting unit. U00431 An subaddress-based bulletin board transmission was interrupted because the specified subaddress confidential box was not registered.
(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.
(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.
(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 60
This page is intentionally left blank. 1-4-8...
1-5 Troubleshooting 1-5-1 Self-diagnostic function (1) Self-diagnostic function This machine is equipped with self-diagnostic function. When a problem is detected, the machine stops print- ing and display an error message on the operation panel. An error message consists of a message prompting a contact to service personnel and a four-digit error code indicating the type of the error.
Page 62
This page is intentionally left blank. 1-5-2...
1-6 Requirements on PWB Replacement 1-6-1 Upgrading the firmware on the fax control PWB Follow the procedure below to upgrade the firmware of fax control PWB. Preparation Extract the file that has the download firmware and put them in the USB Memory. Procedure 1.
Page 64
This page is intentionally left blank. 1-6-2...
2-1 Electrical Parts Layout 2-1-1 Electrical parts layout Figure 2-1-1 1. Fax control PWB (FCPWB)....Modulates, demodulates, compresses and decompresses. 2-1-1...
Page 66
This page is intentionally left blank. 2-1-2...
2-2 Operation of the PWBs 2-2-1 Fax control PWB CN400 Figure 2-2-1 Fax control PWB silk-screen diagram Connector Signal Voltage Description 5 V DC power input from MPWB CN400 VDD5 5 V DC Connected to Ground main PWB Reset signal RESETN 0/3.3 V DC Control voltage...
Page 68
This page is intentionally left blank. 2-2-2...
Need help?
Do you have a question about the Fax System (U) and is the answer not in the manual?
Questions and answers