Oki OKIFAX OF-38 Field Service Manual
  1. Manuals
  2. Brands
  3. Oki Manuals
  4. Fax Machine
  5. OKIFAX OF-38
  6. Field service manual
Oki OKIFAX OF-38 Field Service Manual

Oki OKIFAX OF-38 Field Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Facsimile Transceiver

Advertisement

Table of Contents
loading

Related Manuals for Oki OKIFAX OF-38

Summary of Contents for Oki OKIFAX OF-38

  • Page 1 Facsimile Transceiver...
  • Page 2 OKIFAX OF-38 FACSIMILE TRANSCEIVER FIELD SERVICE HANDBOOK...

  • Page 3: Table Of Contents

    C O N T E N T S Page GENERAL INFORMATION ......CHAPTER 1.
  • Page 4 Document and Copy Stackers 3.10.2 AC Power Setting Change ........3 - 53 3.11 3.12 Off-line Test 3 - 5 5 3.13 3.13.1 General ........... 3 - 5 5 Reception .
  • Page 5 ADJUSTMENT ......... . . CHAPTER 6.
  • Page 6 7 - 1 0 ......... . 7.3.2 7 - 1 2 7.3.3...

  • Page 7: General Information

    C H A P T E R I: GENERAL INFORMATION...

  • Page 8: Features

    GENERAL INFORMATION CHAPTER 1. Features ..........
  • Page 9 GENERAL INFORMATION C H A P T E R 1 . The OKIFAX OF-38 has the following main features: Extra fine resolution MMR coding scheme (3) CCITT Image memory capacity: 1 M byte, 2M byte (option) (5) 16-halftone transmission 60 one-touch keys...
  • Page 10 Acoustic monitor applications Verification stamp 11 management reports print-out 22 local diagnosis tests 29 user’s function settings 42 configkation program settings 44 serviceman’s program settings 1 - 2...
  • Page 11 General Appearance The general appearance of the OF-38 is shown in Figure 1.2.1 and Figure 1.2.2 below. The operation control panel of the OF-38 is shown in Figure 1.2.3. PAPER COMPARTMENT COVER OPERATION FRONT COVER General appearance (front view) Fig. 1.2.1 REAR COVER RIGHT SIDE COVER AC INLET...
  • Page 12 Fig. 1.2.3 Operation Control Panel of the OKIFAX OF-38 l - 4...
  • Page 13 CHAPTER 2: SPECIFICATIONS...
  • Page 14 SPECIFICATIONS C H A P T E R 2 . The table below gives the specifications for the OKIFAX OF-38. Notes: PROGRAM key Temporary Programing User Programing Technical Programing Specifications Item Desktop design CCITT G2 and G3 facsimile transceiver General Switched Telephone Network (GSTN)
  • Page 15 Specifications Item Resolution 8 pelslmm a) 3.85 lines/mm (STD) 15.4 lines/mm (EXT. FINE) Scanning System 2,048 dots flat-bet thermal printing Recording System 1) One-dimensional coding scheme: Coding Scheme MH (Modified Huffman) 2) Two-dimensional coding scheme: MR (Modified READ) 3) MMR (Modified Modified READ) 1) High-speed MODEM MODEM a) CCITT Rec.
  • Page 16 9 seconds 1) OKI ARQ (Automatic Repeat Request) Error Correction Type A & B 2) OKI CCITT ECM (Error Correction Mode) 3) CCITT ECM (Standard) Service personnel can set above functions to on/off as the default state: TPP + 02...
  • Page 17 (second) the remote station for disconnection after the second 2400 bps transmission is attempted. 1) OKI ARQ (by receiver side) The automatic fall-back system can have the receiver send either a NAK tone 5 times continuously, or 10 times non-consequentive.
  • Page 18 Item Specifications Auto Dialing 1) One-touch key 60 one-touch keys are provided. a) Start button User or service personnel can set to use START button or not after pressed an one-touch key for auto dialing. (PP+ 09) User or service personnel can program some parameters to each one-touch key individually.
  • Page 19 Item Specifications Manual Redial . No limit on number of repeat attempts. VOICE REQUEST key provided Voice Request From transmitter side Available only after the entire message has been transmitted. 2) From receiver side Possible after the page has been received. The OF-38 compares the last 4-digit of an auto-dialed Closed User Group number:...
  • Page 20 Specifications I t e m The OF-38 can separately transmit the right and left Split Transmission haves so that the receiving machine can receive two copieswithout reduction in the size of printed message. Split Transmission format (example) Original Document Printed Message Center mark 2 - 7...
  • Page 21 Item Specifications Call Back Message machine only when the remote machine (receiver) does not respond to a voice request from the transmitter. following three kind of formats. Format setting: Call Back Message format (example) 3 4321519 P L E A S E . C A L L B A C K ** C O N F I D E N T I A L **...
  • Page 22 item Specifications Sender ID The OF-38 can transmit a programed alphanumeric message, such as company’s name, consisting of up to 32 characters including the user’s special graphic symbol, if any. * Sender ID programing: PP + 12 Symbol programing: Sender ID format (1) (example) Sender ID format (2) (example) * Size of the sender ID characters printed on the received copies becomes double when this special symbol feature is used.
  • Page 23 Specifications Item The OF-38 can send the 16-digits as the personal ID, Personal ID which will be displayed on the remote machine’s display, and it will be printed out on the active report. Programing: The OF-36 can retransmit a page if the transmitter has Automatic Page detected an RTN signal from a receiver with a memory Retransmission...
  • Page 24 Max. 100 remote stations Sequential Broadcasting Delay Transmission 01 to 64 Confidential Transmission OKIFAX OF-38 or OF-27 Temporary setting: P + 7 Max. 100 remote stations Relay Broadcast * Temporary setting: P + * User or service personnel can select a receiving in...
  • Page 25 Specifications Poll TX (To be polled) automatically collected by a remote station. Cipher Communication communication between two OF-38s. Temporary setting: PO + 16 * User or service personnel can set the cipher communication mode to on/off as the default state: The OF-38 can setthe feeder transmission to on/off temporarily: PO + 11 The OF-38 can set to start G2 protocol mode...
  • Page 26 Item Specifications Unique Location Parameter Service personnel can program the following features to each locations: TPP + 13 The OF-38 can program some parameters to the two Function Key Programing function keys, Fl and F2, individually. Functions: . NO REDUCTION .
  • Page 27 Item Specifications Selectable on/off or timer, by programing: P + 3 Auto Receive Reverse poll The OF-38 can automatically change its mode from reception to transmission over the same line, as soon as the OF-38 has terminated the poll RX mode. Default arrangement: PP + 27 Temporary setting:...
  • Page 28 Item Specifications No Paper Receive The OF-38 can temporarily store a message being received in memory when the recording paper has run out, and the message can be printed out later, after the operator has supplied a new recording paper roll. User or service personnel can program the function to enable/disable as the default state: PP + 32 Receiving Message in...
  • Page 29 Specifications Acoustic Monitor The loudness can be adjusted to zero with a slide-switch. 1) Acoustic line monitor a) To monitor the initial part of the handshaking proceduresignals. PP + 24 Temporary setting: PO+15 Default arrangement: PP + 22 2) Acoustic dialing monitor * Default arrangement: PP + 25 RS-232C Interface...
  • Page 30 Specifications Item Size Reduction Maximum width of paper A4 Size A4 Size that can be printed A3 to A4 Size reducing direction A3 to B4 Vertical reduction ratio Horizontal reduction ratio Effective Reading Width DOC. CENTER DOC. CENTER DOC. DIVIDE 255 mm k 1% DOC.
  • Page 31 2 - 1 8...
  • Page 32 Specifications Message Confirmation The OF-38 can print out the message confirmation Report report manually or automatically that is the following items by programing. . POLLING . MANUAL TRANSMIT . CONFIDENTIAL TX . DELAY SEND/POLL . DELAYED MAIL BOX TX . AUTO DIAL/TRANSMIT User or service personnel can set the function to print out automatically or not as the default state: Message Confirmation Report format (example)
  • Page 33 Item Specifications Active Memory Files The OF-38 can print out an active memory files report manually. Setting: PO+22 Active Memory Files format (example) F I L E M E M O R Y E N T R Y R E P O R T - D I S T A N T S T A T I O N N O .
  • Page 34 Item Specifications Configuration Report The OF-38 can print out a configuration report to confirm an initial setting, or rearrange the machine configuration. P P + O O * Setting: Configuration Report format (example) C O N F I G U R A T I O N R E P O R T 2 - 2 1...
  • Page 35 Item Specifications Telephone Number List The OF-38 can print out the programed telephone numberforauto-dialing. Setting: Telephone Number List format (example) T E L E P H O N E D I R E C T O R Y C O D E 2 - 2 2...
  • Page 36 Specifications Item One-touch Key Assignment The OF-38 can print out the assigned one-touch key list for broadcasting. Setting: PP + 02 One-touch Key Assignment format (example) O N E T O U C H K E Y L I S T O N E T O U C H K E Y 01 O N E T O U C H K E Y 0 2 O N E T O U C H K E Y 0 3...
  • Page 37 Item Specifications ogrammable Parameter The OF-38 can print out the programed parameter list toconfirm an initial parameter setting. Setting: PP+O3 Programmable Parameter List format (example) 2 - 2 4...
  • Page 38 Item Specifications The OF-38 can print out a cancel report if operator has Cancel Report been canceled some image data in memory. * Setting: P + “CLEAR” Cancel Report format (example) 2 - 2 5...
  • Page 39 2 - 2 6...
  • Page 40 S p e c i f i c & i o n s Item P o w e r O f f R e p o r t The OF-38 can print out an power off report automatically when AC power is resumed. P o w e r O f f R e p o r t f o r m a t ( e x a m p l e ) * * A C T I V E M E M O R Y...
  • Page 41 Item Specifications The OF-38 can prepare for message transmission even Transmit Preparation ‘0 while the OF-38 is engaged in message reception, so that the operator does not need to wait the transmission. Available Session Status Display Service personnel can enter an &digit number unique Entry of Machine Version ID to the particular machine.
  • Page 42 Item Specifications Transmission Document The documents must be rectangular in shape, and must be placed face down on the ADF stacker. 1) Thickness a) 0.06to 0.13 mm/ADF b) Up to 0.15 mm/single sheet 2) Shape Documents must be rectangular in shape. O p a c i t y Documents must not permit more than 40% of the scanner source light to pass through them.
  • Page 43 Item Specifications Manually release Document Jam Removal Effective Recording Width Recording paper width Effective recording width Communication Recording Paper Size Mode* (mm) (mm) (mm) (210 mm) Denotes receiving a signal from a G3-type machine transmitting 84 documents. * G3/A4 Denotes receiving a signal from a G3-type machine transmitting A4 documents.
  • Page 44 Item Specifications Skewing of Recording Paper The maximum allowable skew of the recording paper is any advance of 2 meters. Indication of Remaining The remaining recording paper may be viewed through the window on the top cover. Recording Paper Recording Paper Running detect a series of “Low Paper”...
  • Page 45 Item Specifications Copy Uniformity Printed copies will exhibit a uniform density of the printed and background area: 1) From edge to edge: 0.2 OD 2) copy to copy: 0.3 OD Copy Stacking The OF-38 can discharge printed copies and stack them jamming, without when the paper length falls in the...
  • Page 46 Item Specifications Ring Detection Sensitivity 1) Voltage range 40 volts to 150 Vrms No operate below 17 volts 2) Frequency range 3) Ring detection time One-ring to 30 seconds * Adjustable in 5 seconds 4) Ring voltage duration Longer than 180 ms .
  • Page 47 Specifications Item All black image printing test Alternate pattern printing test Checker pattern printing test Automatic document feeder test Paper cutting test Send and receive motor running test Consecutive digit dialing test Specific digit dialing test Auto test Display of total count a) Transmitted pages: PO+23 PO+24...
  • Page 48 Specifications AC Power 1) Voltage range Selectable with a strapping wire on the power supply unit. a) 190VAC to 250VAC 2) Frequency range 47 Hz to 63 Hz 3) Power consumption Typical Power Mode Consumption Transmit Receive Receive (All black) 160W Copy (Normal) 2 2 0 w...
  • Page 49 Item Specifications Ambient Conditions 1) Temperature range 10°C to 35°C 2) Humidity range 20% to 85% The density of a block thermal paperwill be greater than 1 .O OD. Temperature “C Overheat Protection thermal print head unit base which is more than 70°C during reception, it will interrupt the reception as follows: Return a DCN signal after responded to...

  • Page 50: General Appearance

    Specifications General appearance and dimensions of the OKIFAX General Appearance OF-38 isshown in Figure 2.1. 1) Width: Approx. 360 mm Dimensions 2) Depth: Approx. 560 mm 3) Height: Approx. 170 mm Approx. 14 kg Weight 2 - 3 7...
  • Page 51 Item Specifications Feeder separation rubber useful life Reliability The separation rubber will not require replacement for at least 30,000 document feeds. 2) Cutter life cuts. cuts. 3) Thermal print head life cycle The life of any given element on the print head will be greater than 3 x 10’...
  • Page 52 Fig. 2.1 General appearance and dimensionsof the OKIFAX OF-38...
  • Page 53 CHAPTER 3:...
  • Page 54 INSTALLATION C H A P T E R G e n e r a l .________.._..__..___..__..Installation Site Environments ..... . . 3 - 2 3.2.1 3 - 2...

  • Page 55: Chapter 3. Installation

    INSTALLATION CHAPTER 3. The following flow chart shows the general installation procedure. Unpacking Telephone and line connections 3 - 1...

  • Page 56: Installationsite

    Installation Site Environments 3.2.1 The installation site Unpacking Unpacking Procedure 3.3.1 Remove the tape from the top of the cardboard box, and open its covering panels. Remove the Accessory Packing Cushion. Lift the O -38 machine out of the box. Remove the plastic wrapper.

  • Page 57: Contentschecking

    Contents Checking After having the OF-38 and the accompanying accessories from the Accessory Packing Cushion, verify the contents according to the list below. Table 3.4 Contents list Contents Name Item No Document Stacker Copy Stacker Document Support AC Power Cord Thermal Recording Paper 1 vol.

  • Page 58: General

    3.6.1 General Initial setting of the OF-38 can consist of two parts as a whole. One is the setting on the PC board, other is the programming by Tenkey operation. Table 3.6.1 and Table 3.6.2 show a required setting items and an option setting items their two parts. Table 3.6.1 Setting on PC board DIP switch 51...
  • Page 59 Programming by Tenkey operation Table 3.6.2 . Length of tone duration Sender ID programming 3 - 5...

  • Page 60: Settingonpc Board

    Setting on PC Board 3.6.2. AUX-181 PC Board 3.6.2.1 Following settings of the DIP switches, Sl and S2, shall be performed according to the local telephone line and telephone exchange requirement. Location of the DIP switches. Removethe screw 0 . The Terminal Cap can be removed. SCREW @ Fig.
  • Page 61 DIP switch Sl explanation Table 3.6.3 DIP switch 51 on the AUX PC board To perform a service personnel setting for a technical setting and maintenance. according tothe applicable line and telephone set i.e., Dial Pulse (DP) or Push Leased line wa 3 - J...
  • Page 62 DIP switch 52 explanation Table 3.64 DIP switch S2 on the AUX PC board “ON” Position DIP Switch Function Sending power level To attenuate the level adjustment Subscriber line Refer to notes below. equalization (TX side) Subscriberline Refer to notes below. equalization (RX side) Notes: 1.
  • Page 63 3. Subscriber line characteristics (general) Figure 3.6.2.4 shows some general information about the subscriber line characteristics to assist in the setting. Frequency (kHz) Fig. 3.6.2.4 Subscriber line characteristics (attenuation vs. frequency) Slide switch 54 explanation The switch 54 location is shown in Figure 3.6.2.3 of this item. following 3 positions.
  • Page 64 3.6.2.2 Following settings of the DIP switch shall be performed as the additional sending power level and the multi frequency (MF) signal attenuation. Location of the DIP switch Open the Compartment Cover by using the Release Lever. And remove a screw @ COMPARTMENT COVER SCREW @...
  • Page 65 Open the Front Cover, then the NCU PC board can be seen in the figure below. Fig. 3.6.2.8 JACK ‘CONNECTION NCU-181 DIP SWITCH 51 Fig. 3.6.2.9 Location of the DIP switch on the NCU PC board 3 - 1 1...
  • Page 66 DIP switch 51 explanation Table 3.6.5 DIP switch 51 “ON” Position DIP Switch Factory Function Description Setting level To attenuate the Sending power 0.5 dB image signal and the adjustment multi-frequency signal (Signal & MF) 1 dB Sl-2 level. Jack connection JC5 for line impedance Service personnel can change the telephone line impedance setting as 600 ohms or 900 ohms.
  • Page 67 3.6.2.3 MB-18 PC Board Following settings of the DIP switch shall be performed as the multi frequency (MF) signal attenuation. Location of the DIP switch Open the Compartment Cover by using the Release Lever. And remove a screw 0. COMPARTMENT COVER Fig.
  • Page 68 Open the Front Cover, then the MB PC board can be Seen in the figure MB’PC BOARD Fig. 3.6.2.12 MB-18 DIP SWITCH 51 Fig. 3.6.2.13 Location of the DIP switch 51 on the MB PC board DIP switch 51 explanation Table ,3.6.6 DIP switch 51 on the MB PC board “ON”...
  • Page 69 3.6.2.4 Service personnel can adjust the buzzer acoustic sound by a potentiometer RVl. Location of the RVl Open the Compartment Cover by using the Release Lever. And remove a COMPP rRTMENT COVER R E W Fig. 3.6.2.14 Remove the two screws @. SCREWS @ Fig.
  • Page 70 Open the Front Cover, then the MCNTl PC board and the RVl can be see” in the figure below. MCNTl PC BOARD POTENTIOMETER Fig. 3.6.2.16 Location of the potentiometer RVl on the MCNTl PC board (2) Adjusting The acoustic sound can be increased. .
  • Page 71 3.6.2.5 RR-18 PC Board Service personnel can mount additional eight D-RAMS for an image memory capacity extension. Then the OF-38 becomes totally 2 Mbyte memory capacity. Location of the extensioned D-RAMS Remove the Front Cover. Then RR-18 PC board can be seen in the figure below. RR-18 PC BOARD MB PC BOARD Fig.
  • Page 72 Specified D-RAM Remarks Modification work a) Mount the 8 pcs. D-RAMs. b) Remove a resistor R31 on the board. Refer to Figure 3.6.2.18. Note:...
  • Page 73 Programming by Tenkey Operation Adjusting Clock Calendar Service personnel can adjust the calendar and clock. LC Display shows: Operation: (Standby) Depress PROGRAM key for 5 or more seconds. on the Tenkey pad. Adjust calendar and clock. on the Tenkey pad. After making the adjusting, press the ENTER key to register.
  • Page 74 Dial Parameters Auto 3.6.3.2 make ratioselection Dial pulse make ratio. The OF-38 can select the dial pulse Operation: (Standby) board. Depress the PROGRAM key for 5 or more TECHNICAL PROGRAM seconds. Bring the cursor the desired mark by tapping on the Tenkey pad. And depress the ENTER key to register.
  • Page 75 Length of PB (MF) tone duration T h e O F - 3 8 c a n s e l e c t t h e l e n g t h o f t h e p u s h b u t t o n ( m u l t i - f r e q u e n c y ) t o n e duration.
  • Page 76 PTT specification parameters LC Display shows: Operation: (Standby) Turn on DIP switch 51-3 on the AUX PC board. TECHNICAL PROGRAM Depress the PROGRAM key for 5 or PROGRAM NO. -P more seconds. on the Tenkey pad. To select a number for the PTT parameter table below.
  • Page 77 Table3.7.3 PTT parameter 3 - 2 3...
  • Page 78 Selection of dial type The OF-38 can select the dial types. LC Display shows: O p e r a t i o n : (Standby) Turn on DIP switch 51-3 on the AUX PC board. TECHNICAL PROGRAM Depress the PROGRAM key for 5 or more PROGRAM NO.
  • Page 79 of auto-dial mode for PBX Selection facility Display shows: O p e r a t i o n : (Standby) Turn on board. PROGRAM NO. -P seconds. cursor Bring the the desired mark by pad. tapping on the And depress the ENTER key to register. PBX LINE ON- OFF PBX LINE...
  • Page 80 Calendar Data Display Mode 3.6.3.3 Display shows: Operation: (Standby) Turn on DIP switch 51-3 on the AUX PC board. Depress the PROGRAM key for 5 or more TECHNICAL PROGRAM seconds. PROGRAM NO. -.P . Tap D/M/Y- U/D/Y Bring the cursor to the desired mark by tapping And depress the ENTER key to register.
  • Page 81 3.6.3.4 The OF-38 can register the installed telephone number as TSl, CSI, and CIG for the local-station identification. LC Display shows: Operation: (Standby) Turn on DIP switch 51-3 on the AUX PC board. Depress the PROGRAM key for 5 or more seconds.
  • Page 82 3.6.3.5 Entry of 3-digit Location Code to Tel. No. Operator can assign a 3-digit location code to a full-digit telephone number. The 3-digit codes available forthis purpose are “001” to “252”. LC Display shows: Operation: (Standby) USER PROGRAM Depress the PROGRAM key for 5 or more PROGRAM NO.
  • Page 83 One-touch 3.6.3.6 LC Display shows: Operation: (Standby) USER PROGRAM Depress the PROGRAM key for 5 or more PROGRAM NO. -.P seconds. ONE OF on the Tenkey pad. ONE TOUCH KEYS To select a ONE-TOUCH key. LOCATION NO. -* (e.g. one-touch key No. 1) ONE TOUCH NO.
  • Page 84 User or service personnel can be selected from the below list and combined into a parameter string separated by key. Table 3.6.8 Programmable parametercodeslist Function Name Delay Send/Poll Mailbox TX “Enable Only” denotes that the programmed function will be enabled Notes: when the assigned key is pressed.and remain valid only on a onetime basis until the in-process communication completes.
  • Page 85 “Subparameter is in advance entered” means that the programmed function includes the required subparameter - this means that the operator must enter the desired subparameter at the time of programming. Use the following listed subparameter values in programming the relevant functions: Follow the guidance message on Character Callback Message: Display and select one out of three message...
  • Page 86 3.6.3.7 Sender ID Programming The OF-38 can prepare a character string for the Sender ID to be printed in the top of recording paper at the receiving end. LC Display shows: O p e r a t i o n : (Standby) Depress the PROGRAM key for 5 or more seconds.
  • Page 87 3.6.3.8 Special Symbol Programming The OF-38 can prepare a graphical pattern which can be used as part of the Sender ID character string. LC Display shows: Operation: (Standby) USER PROGRAM Depress the PROGRAM key for 5 or more PROGRAM NO. -P seconds.
  • Page 88 User Program Setting (1) Operation Depress PROGRAM key for 5 or more seconds. To obtain a list of default parameters for the Printout of machine existing machine configuration. configurations The printed example is shown item No. 62 of the specifications of Chapter 2. obtain a list of the registered telephone Printoutof registered telephone numbers...
  • Page 89 Not used Not used Sender ID To prepare a character string for Sender ID of recording paper 3.6.3.7. Special symbol To plot a graphical pattern which can be used as part of the Sender ID character programming Refer to rub-item 3.6.3.9. determine transmission of sender ID as Sender ID print position determine the position of Sender ID and...
  • Page 90 operation the machine ata specified time on an everyday bark. for variouraleRing purposes. The machine is availablewithtwotoner: 2400 Hror arrangement Default To determine the default status of the verification stamp for the machine.
  • Page 91 Description inhibit or enable the service personnel et Down-line program the remote machine to rewrite the content! of the memory of the machine over the telephone line for remote diagnosis. select Multi-copyingin . To the default status of the multi- receiver c o p y i n g f o r...
  • Page 92 Table 3.6.9 Programmable parameter list for the function keys Enable Disable Subparameter Subparameteris in O n l y Only not entered yet advance entered Sender ID No Reduction Reverse Poll STAMP Page Retransmission 0 0 7 Feeder TX Document Remove Message Confirmation (*7) Cancel...
  • Page 93 Enable Disable Subparameter Subparameter is in Function Name O n l y Only not entered yet advance entered Activity Report Active Memory Rx Total Copy Total “Enable-Disable Toggle” denotes that the programmed function will be Notes: (* 1) alternately enabled and disabled each time the program-assigned key is pressed, regardless of the default state for the particular function.
  • Page 94 Description To select to printout the some message confirmation reports automatically printout the some merlage when the entry reports operator’s input machine acceps the a communication. communications must be of the auto-dial type. 3 - 4 0...
  • Page 95 of Function D e s c r i p t i o n Activity report printout default status of the activity report printout for the machine. the machine for the printout of Activity report daily printout report at the time specified Not used the closed user group function to To register check code...
  • Page 96 3.6.3.10 Technical Program Setting Name of Function Description Printout of service Service personnel can obtain the configuration of the default parameters of default report the machine. High-speed T.30 speed T.30 protocol (Type 8) of the machine. If thetype “E*isretin offthe machine will usually communicate with the distant station inlype A.
  • Page 97 odingschemefordata scheme for the data storage of the machine. To select the default transmission rate for the machine, which can be any of 9600. 7200.4800, and 2400 bps. To assign a packed communication modeto location codes on individual basis. The service personnel can select and make rogramming combination of the by a 3-digit octal code.
  • Page 98 LC Display shows of Function Description To register the installed machine’s p r o g i n g telephone numberasTSI. CSI, and CIG for the local station identification. delay from transmission of CED signal to that of D&signal toavoid the effect of against echo on the telephone line.
  • Page 99 of Function LC Dirplayshowr Description To activate or deactivate the machine Enabling protocol capability of the printing the contents of the dump Ignoring 1st DIS signal the machine to ignore the 1st receiving station to avoid confusion which may be caused by an echo of the DIS signal receiving station which has transmitted the DIS signal.
  • Page 100 Description defaultstatefortheoff-hook condition detecting of the local telephone. To arrange the machinetogenerate an Permanent-loopalarm alarm tone when the machine detects a permanent loop of the local telephone. T o relectthedefaultrtatefortheTS1 (Tel. No.) printing capability of the machine. To program access digit If figurer of 4 digits (between digit No.
  • Page 101 display and day to be displayed on the LC Display during the standby state of the machine. the default state for the usage of RS-232C interface port of the machine. make the auto-dial mode of the machine auto-dial Selection of applicable to PBX facilities.
  • Page 102 Telephone and Line Connection Service personnel can connect a telephone set and the applicable line by following the procedures below. Remove the screw @. The Terminal Cap can remove from the machine. SCREW @ TERMINAL CAP Fig. 3.7.1 The telephone set and the terminal line can be seen in the figure‘below. TELEPHONE SET TELEPHONE LINE Fig.
  • Page 103 Confirmation of the application telephone line setting Programming/ Reference Setting Way Line PC Board Sub-item No. PSTN 3.6.3.2 (5) Programming & (Public Switched DIP switch Sl AUX-181 Telephone Network) Programming by 3.6.3.2 Leased line AUX-181 3.6.2.1 Frame Ground Connection Service personnel can connect a frame ground cable to an earth, if necessary. Fig.

  • Page 104: Rs-232C Interface Connection

    RS-232C interface Connection Remove a screw 0, then the Terminal Cap can be removed. TERMINAL CAP SCREW @ Fig. 3.9.1 Connect the interface connectors to DCE and DTE. RS-232C interface connectors Fig. 3.9.2 Confirmation of the RS-232Csetting Reference Programming/ Setting Way Sub-item No.

  • Page 105: Accessory Installation

    3.10 Accessory Installation 3.10.1 Thermal Recording Paper Push the Release Lever. The Compartment Cover can be opened. C O M M E N LEVER Set the thermal recording roll in the figure below. THERMAL RECOkDlNG PAPER Fig. 3.10.2 3 - 5 1...
  • Page 106 Set correctly the top of paper Fig. 3.10.3 The OF-38 can be cut the top of paper automatically, after closed the cover. 3 - 5 2...

  • Page 107: Document And Copy Stackers

    3.10.2 Document and Copy Stackers Hang the document and copy stackers onto hanging positions A and A’, B and B’, C and C’, respectively. COPY STACKE Hanging positions for the stackers Fig. 3.10.4 Hang the document support in the figure below. D O C U M E N T DOCUMENT SUPPORT COPY...

  • Page 108: Ac Power Setting Change

    AC Power Setting Change 3.11 The OF-38 can be already set as 220 V setting on the power supply unit for International Version. However, if necessary, the service personnel can change the setting into 115 V in accordance with the following procedures. (1) Setting procedure Disassemble the Side Cover(R).

  • Page 109: Off-Line Test

    3.12 Off-line Test Service personnel can perform off-line tests on the following items. (1) Check items ROM hash test ROM version test MODEM loop test Test printing (checker pattern) (2) Operation procedure Turn on AC power switch. Turn on #3 of the DIP switch Sl on the AUX PC board. (Refertosub-item 3.6.2.1.) Depress the PROGRAM key more than 5 seconds.

  • Page 110: On-Linetest

    On-line Test 3.13 The user or service personnel can do an on-line test of the following items. Test items: 3.13.1 General Turn the auto-receive function to “ON”, confirm that the AUTO REC lamp is lit. Hook up the telephone handset, making sure that the lamp goes off. When the handset is off the hook, press the START button, and confirm that the FAX lamp is lit.

  • Page 111: Transmission

    Reception 3.13.2 Call the installed machine with another telephone, and make sure that: the FAX lamp lights. After about 35 seconds under above conditions, the machine can take a time out. Make sure thatthe audible alarm sounds, and then stops automatically. To receive facsimile messages from a remote G3 or G2 machine.
  • Page 112 Fig. 3.13.1 Flow chart for typical message reception 3 - 5 8...
  • Page 113 chart Fig. 3.13.2 Flow for typical message transmission 3 - 59...
  • Page 114 CHAPTER 4: MAINTENANCE...

  • Page 115: Maintenance

    MAINTENANCE CHAPTER 4. Routine Inspection ........4 - l Self-DiagnosisTests Protocol Dump Printing ........
  • Page 116 MAINTENANCE CHAPTER 4. Routine Inspection The routine inspection in field is required the following items about one year after a machine has been installed. Table 4.1.1 Routineinspection Reference Item No. Description Inspection Item inFigure4.1.1 If transmitted pages are counted more than 100,000 times, replace the Fluorescent Lamp fluorescent lamp.
  • Page 117 HEAD PRINT ROLLER Fig. 4.1.1 Routine inspection 4 - 2...

  • Page 118: Self-Diagnosis Tests

    Self-Diagnosis Tests Service personnel can check various test items by using this self-diagnostic test function. Procedure of the self-diagnosis test mode Turn ON AC power switch. Turn ON #3 of DIPswitch 51 on the NW PC board. (Refer to sub-item 3.6.2.1 in Chapter 3.) Depress the PROGRAM key for 5 seconds or more.
  • Page 119 Table 4.2.1 Self-Diagnosistertmenu Tao No.’ LC DisDlavshowr Description To check the function validity of the and the associated circuit. To check the functional validity of the input ports provided in the machine. bit position on LC Display will be changed the status “0” into “1”.
  • Page 120 E n t e r N o . : Position identification No. on LC Display Position Position Name of Key Name of Key ID No. ID No. RELAY BROADCAST AUTO RECEIVE CONFIDENTIAL RX DELAY SEND/POLL PROGRAM Not used Not used Not used Not used NO REDUCTION...
  • Page 121 Position identification N . on LC Display...
  • Page 123 Description Name of Function Display shows Enter No.: 4 Position identification No. on LC Display One-Touch key No. 60 One-Touch key No. 44 Not used One-Touch key No. 45 Not used One-Touch key No. 46 Not used One-Touch key No. 47 Not used One-Touch key No.
  • Page 124 LC Display shows Description Enter No. ‘5” To check the validity of ROM chips (8 pa.) on the RR-18 PC board by the checkruti test. ROM ;hecksum test of any faulty ROM chips be found, the LC Display will show below: (for example) ROM No.
  • Page 125 Name 01 Function shows Description Display check the validity of all S-RAM and D-RAM chips on the RR-18 PC board. version check In case of all S-RAM chips are normal. the LC will show below: Display In case of any faulty S-RAM chips be found. the LC Display will identify by a meW~ge below: (for example) No Good After S-RAM test is normal, the test will perform next D-RAM test.
  • Page 126 High-speed MODEM technical programming No. ‘I I ‘) bytransmitting or receiving a continuous train of “0” data. Two identical machines will be required for point-to-point transmission test with their tranrmirrion rate matched in advance (technical programming No. ‘11’). RX SIDE TX SIDE .
  • Page 127 Name of Function LC Display shows Tao No. Description the validity of the function of the Low-speed modem unit for the transmission rate 300 bps by transmitting or receiving a continuous train of flags (0111 Two identical machineswill be required for point-to-point transmission test TX SIDE RX SIDE Talk each other...
  • Page 128 LC Display shows Name of Function Description Not used transmit 7 kinds of tone (NAK. PIS, 62 total signals, and MF tones) into the line for level and When MFl is selected, the LC Display will show below: Pressing the STOP button for the release. Not used Clearing total counts of To clear the records for the total counts of Transmission, Reception.
  • Page 129 ‘ap N Name of Function LC Display show Description Clearing total count5 of To clear the records for the total counts of the document feeder operations and the paper cutting document pull-m and o p e r a t i o n s t h e m a c h i n e .
  • Page 130 LC Display shows D e s c r i p t i o n Name of Function To check all LED indicators on the Operation Panel. LED test All LED indicators will be turned on for second. After the operation. all LED indicators will be sequentially turned on. one by one, for 0.5 second each time.
  • Page 131 Name of Function Description To check the validity of the printing system of the machine with odd-even numbwd dot data Test printing Mode 2: produced by the internal logic. black dot ani white The machine will produce a continuous sheet of all gray printed paper until the STOP button is dot on the entire pressed.
  • Page 132 LC Display shows Description Specific digit dialing To check the validity of the auto-dialing function of the machine for digits specified. switch Note: 51 on the NCU PC board. Auto test To check the following tests automatically: (1) ROM check tea ROM version check RAM validity test (4) Test printing (Checker-pattern)

  • Page 133: Protocol Dump Printing

    Protocol Dump Printing is able to The OF-38 print protocol dump data. (e.g. Figure4.3.1) Service personnel can check the communication protocol signals of one facsimile by analyzing these dump data based on the kind of control signal (of Group 3) that has been input and output.
  • Page 135 Protocol dump data map used (space) Transmitted all FCFf (32 bytes) Received all FCFs (32 bytes) Not used (space) Transmitted DIS (16 bytes) Transmitted OTC<16 bytes) Transmitted DCS (16 bytes) Not used (space) Transmitted NSF (96 bytes) Transmitted NSS (96 bytes) Transmitted NSC(96 bytes) Not used (space) Received DIS (16 bytes)
  • Page 136 Interpreting the printed protocol dump data Service personnel can analyze G3 facsimile communication protocol signals from the dump data which are printed out. Figure 4.3.3 shows the result of an analysis of the protocol dump data in Figure 4.3.1 (refer to the FCF signal conversion Table 4.3.1, next item).
  • Page 137 FCF (Facsimile Control Field) Conversion table Table 4.3.1 shows all FCF signals which are needed to analyze the printed out protocol dump data. The hexadecimal codes of the table are used to decipher the first and second lines of the printed data. Some signals have two different hexadecimal codes, in accordance with the calling partyorcalled party.
  • Page 138 List of Error Data on the Report Table 4.4.1 Lirtoferrordataandresultonthereport Remote terminal not provided with function with multi-copy BAD COPY QUALITY NO PAPER NO PAPER No recording paper LOW PAPER ALARM NO PAPER Recording paper near end Communication time over 65 minutes OVER 65MIN/PACE JAM 2 EXCEEDS MEMORY...
  • Page 139 Error Data R e m a r k s C. CODE MISMATCH 1 COMM. ERR Password mismatch in cipher communication COMM. ERR Hatching error in closed network CLOSED USER ERR communication NO C.F. BOX COMM. ERR Receiving failure because of password not registered in confidential mailbox COMPLETED Abnormal end of broadcast...
  • Page 146 4 - 3 1...
  • Page 156 4-41...
  • Page 160 CHAPTER 5: ADJUSTMENT...
  • Page 161 CHAPTER 5 ADJUSTMENT Electrical Adjustments ........5- 1 Ringing Signal Detection Sensitivity ......5 - 1 5.1.1 Dial Tone and Busy Tone Detection Level (1) 5.1.2 Busy 5.1.3 Dial Tone and Tone Detection Level (2) NAK Tone Detection 5.1.4 ..........5 - 9 5.1.5 Near End (Black-Belt) Detection ......

  • Page 162: Electrical Adjustments

    C H A P T E R 5 . ADJUSTMENT Electrical Adjustments 5.1.1 Ringing Signal Detection Sensitivity Service personnel can adjust the sensitivity to detect a ringing signal with a potentiometer. to reveal The disassembly procedure the NCU-181 is described in to sub-item 7.3.5 in Chapter 7.
  • Page 163 NCU-181 1 pin Ringing signal detectidn sensitivity measurement points on the NCU-181 Fig. 5.1.1 A d j u s t m e n t . Use the RVl p o t e n t i o m e t e r o n t h e N C U - 1 8 1 t o a d j u s t t h e s e n s i t i v i t y , if necessary.

  • Page 164: Dial Tone And Busy Tone Detection Level

    Dial Tone and Busy Tone Detection Level (1) 5.1.2 Service personnel can adjust the dial tone and the busy tone detection level with a potentiometer. The disassembly procedure to reveal the NCU-181 is described in sub-item 7.3.5 in Chapter 7. : NCU-181 tone of 400 Hz at - 30.0 dBm is input to the line HIGH...
  • Page 165 1 pin Fig. 5.1.2 Dial tone and busytone detection level (1) measurement points on the NCU-181 Adjustment Use the RV2 potentiometer on the NC&181 to adjust the detection level, if necessary. (See Figure 5.1.2.) Fully turn the RV2 counterclockwise. Slowly turn the RV2 clockwise until the output signal on the oscilloscope changes from High (5 V) to Low (0 V) Make sure that the output signal on the oscilloscope becomes: Low (0 V) when the attenuator is set to 30.0 dB.

  • Page 166: Dial Tone And Busy Tone Detection Level

    5.1.3 Dial Tone and Busy Tone Detection Level (2) Service personnel can adjust the dial tone and the busy tone detection level with a potentiometer. The disassembly procedure to reveal the NCU-181 is described in sub-item 7.3.5 in Chapter 7. tone signal of 400 Hz at - 25.0 dBm is input to HIGH the line terminals, and...
  • Page 167 NCU-181 Fig. 5.1.3 Dial tone and busy tone detection level (2) measurement points on the NC&l81 Adjustment Use the RV3 potentiometer on the NCU-181 to adjust the detection level, if necessary. (See Figure 5.1.3.) Fully turn the RV3 counterclockwise. Slowly turn the RV3 clockwise until the output signal on the oscilloscope changes from High (5 V) to Low (0 V) Make sure that the output signal on the oscilloscope becomes: .

  • Page 168: Nak Tone Detection

    5.1.4 NAK Tone Detection Service personnel can adjust the NAK (Not Acknowledge) tone detection frequency with a potentiometer. The disassembly procedure to reveal the NCU-181 is described in sub-item 7.3.5 in Chapter 7. NCU-181 The IC6-11 pin reading is 3240 Hz + 10 Hz RV4 (potentiometer) Required tool: counter...
  • Page 169 Fig. 5.1.4 NAK tone detection frequency on NCU-181 Adjustment Use the RV4 potentiometer on the NCU-181 to adjust the frequency range, if necessary. (See Figure 5.1.4.) 5 - 8...

  • Page 170: Buzzersound

    5.1.5 Buzzer Sound Service personnel can adjust the buzzer sound level with a potentiometer. The disassembly procedure to reveal the MCNTl is described in to sub-item 7.3.6. Adjustment Turn on the AC power. Operate the initial program setting No. “26”: High: 2400 Hz Low: 600 Hz...

  • Page 171: Near End (Black-Belt) Detection

    Near End (Black-Belt) Detection 5.1.6 Service personnel can adjust the sensitivity to detect a near end (black-belt) with a potentiometer. NESE-12 Measurement points: Less than 1.3 V (10°C to 35°C) when set the white-color sheet. Digital voltmeter Measurement Connect the leads of the digital voltmeter between TPl test point and Ground (FG).
  • Page 172 Location Open the Compartment Cover, then we can see a potentiometer and the window. near-end NEAR-END WINDOW (Control) Fig. 51.6 Location of the Near-End Detection Fig. 5.1.7 Near-End detection adjustmenton NESE-12 5 - 1 1...

  • Page 173: Optical Adjustment

    Optical Adjustment 5.2.1 General Layout of optics Figure 5.2.1 shows the optics layout as viewed from the front of the machine. Fig. 5.2.1 Layout of optics Sensor output PC board name Specification 2.8 V (White signal) Testinstrument Oscilloscope (Dual trace) Document to be used Ground TP3:...
  • Page 174 5 - 1 3...
  • Page 175 3) Scanner assembly SNS-18 PC BOARD SHIELDING PLATE SCREW Fig. 5.2.4 Scanner assembly...

  • Page 176: Setting-Up For Adjustment

    Setting-up for Adjustment Procedures: Remove the Compartment Cover. (Seesub-item 7.3.8.) The SNS-18 PC board and the scan assembly can be seen below. Fig. 52.5 SNS-18 board and scan assembly Connect the oscilloscope probes to test points TP2 and G (Ground) of the SNS-18. The second probe of the oscilloscope should be connected to TPl, which can be used as an external trigger.
  • Page 177 Operate the Sensor Test for local diagnosis. (Technical program setting No. “50”) The fluorescent lamp can light. Wait about 15 minutes or so for the lighting to be stabilized before making adjustments. 5.2.3 Rudimentary adjustment for levelness 5.2.3.1 If the SNS-18 is faulty, replace the SNS-18 and temporarily fix the two screws @ (See Figure 5.2.4 of sub-item 5.2.1) Remove the Shading Plate (two screws;...
  • Page 178 5.2.3.2 adjustment of focus Procedures: Manually feed the specified pattern of the test chart, OKI test chart (see Figure 5.2.101, until it is set at the reading position. Loosen the lens lock screw. Move the lens back and forth, in the direction of the symbol “F”, to maximize the output level difference.
  • Page 179 Horizontal fine adjustment 5.2.3.3 Procedures: 3 + 0.75 mm optical axis adjustment: Write two black horizontal lines on the test chart A77-39. (See Figures 5.2.11 and 5.2.12.) (Black line, 1 mm in thickness) Document insertion side Fig. 5.2.11 Additional lines on the specified chart Fig.
  • Page 180 Window Reading Fig. 5.2.13 Sensor’s reading position Move the SNS-18 to obtain the output waveform on the oscilloscope that is shown in Figure 5.2.14. That is, the black horizontal line is read. Fig. 5.2.14 Sensoraxisalignment.forreading position Make sure that the sensor output waveform can be changed horizontally as Figure 5.2.15 by removing the send-motor pulley.
  • Page 181 Fine adjustment of focus 5.2.3.4 Procedures: Set the thin stripes pattern on the OKI test chart to the reading position of the sensor. Thin stripes patter” Fig. 5.2.16 Thin stripes pattern on OKI test chart Move the lens back and forth until a sensor output waveform appears somewhat like that shown in Figure 52.17, with large symmetrical circles.
  • Page 182 5.2.3.5 Sideways adjustment Procedures: Set the specified test chart (Figure 5.4.19). adjust the document guide to the chart width, and place the chart at the reading position. Additional line (about 1 mm in thickness) Fig. 5.2.19 Additional line on the specified chart Use the CH2 channel of the oscilloscope to observe the marker signal at test-point waveform, at the side reading position with the alternation ALT mode of the oscilloscope.
  • Page 183 Make a slight leftward adjustment so that the vertical line output by ,the sensor (shown in Figure 5.2.20) is aligned with the left side of the l-bit center marker signal. After the adjustment, fix the sensor bracket and the SNS-18 by tightening the screws completely.
  • Page 184 Adjust the RVl potentiometer for a test-point TP3 output level of 2.8 V as a white signal. Note : a) The document to be used isthe OKI test chart. lit for at least 10 minutes (for lighting stabilization). Fig. 5.2.22 Sensor output waveform(all white signal) Verify that the test-point TP4 output level is 2.8 VtO.3 V, using the above...
  • Page 185 5.2.3.8 Peak hold lower limit check Procedures: After the sensor adjustments are finished, connect the oscilloscope probes to the test-point TP2 (sensor output) and TP3 (peak hold). External trigger of the oscilloscope connects the TPl of the SNS-18. Shield the light by covering the lens with paper. Make sure that the TP2 output decreases as the TP3 output decreases.
  • Page 186 CHAPTER 6:...
  • Page 187 TROUBLESHOOTING CHAPTER 6. Electrical Troubleshooting Flow Chart ...... 6- 1 Overall ..........6 - l 6.1.1 6.1.2...

  • Page 188: Troubleshooting

    TROUBLESHOOTING CHAPTER 6. This chapter explains how to do troubleshooting for field service or work-shop people. Electrical Troubleshooting Flow Chart Overall 6.1.1 See the Lit Alarm LED. PC board. Is the printed test data normal? Operate the local copy.
  • Page 189 Operate a FAX communication. In which mode See the No Dial-Tone Detection. Is the auto-dialing operate normal? See the Reception communication trouble (Sub-item 6.1.10) Verify symptoms. 6 - 2...

  • Page 190: Nogoodlcdoperation

    No Good LCD Operation 6.1.2 Turn on the AC power switch. Does the LC Display Remove the Front Cover. (Sub-item 7.3.1) Check all connector cables on the OPE(M) PC board. Does the DC + 5 V, appear at the specified pins on MODEM cable, and see the troubleshooting of...
  • Page 191 , -. Fig. 6.1.1 MODEM PC board 6 - 4...

  • Page 192: Litalarmled

    6.1.3 communication error Does the shutter Does the Character Does the Character LCD show HEAT ALARM? Wait about 10 min. or more. Replace the MCNTZ PC board. 6 - 5...

  • Page 193: Abnormal Print-Out

    6.1.4 Abnormal Print-out Connect an oscilloscope probe between lC5-86 pin (LATCH) and Ground terminal. lsthe KS-86 pin observed the following waveform? lsthe KS-99 pin observed 0.53 msec. (at 20°C) Are the Head Data appeared at the lC5-74 pin? 6 - 6...

  • Page 194: Nogoodlocalcopy

    No Good Local Copy the printed data all b l a c k ? Has an image signal appeared at the test point 6 - 7...
  • Page 195 Replacethe MCNTZ PC board. e the printed data still Are the printed data abnormal? 6 - 8...

  • Page 196: No Dial-Tone Detection

    6.1.6 No Dial-Tone Detection Does the dial-tone a Junction JC3 on the NCU PC board? Does the control signal 5 V appear at the transistor Ql’s base lead? Replace the Ql. Replace the RLl. Does the signal appear at IC5-8 pin?
  • Page 197 Check or adjust with potentiometers RV2 and RV3 by referring to sub-items 5.1.2 detected after their adjustment? Check the connectors on MB PC board, 6 - 1 0...
  • Page 198 Fig. 6.1.2 NCU-181 PC board (JC3) 6 - 1 1...

  • Page 199: Noauto-Dialing

    the dial speed at the correct setting? the correct setting? Operate the Consecutive Digit Dialing Test of the Does the dialing signals appear between a TBl (LINE) terminal on AUX PC board? (See sub-item 3.7.) 6 - 1 2...
  • Page 200 Does the signals appear between a Junction JC3 on the NCU PC board? (See attached Figure 6.1.2) Does a relay RL2 operate properly on the NCU PC board? corrector lead? Does a relay RL3 operate properly on the NCU PC 6 - 1 3...

  • Page 201: Transmission Communicationtrouble

    Transmission Communication Trouble 6.1.8 Try to set the non-loaded cable equalizer with Group 2 transmission a DIP Switch S2 on the AUX-181 PC board. mode? Equalizer Switch Combination Volume Was there an international FAX communication? setting., and then set the @J: Protective tone transmission (ON).
  • Page 202 improvement? Try the telephone line quality might be a poor. replace the MODEM PC The problem has might been MODEM PC board.

  • Page 203: No Auto-Reception

    6.1.9 No Auto-Reception Is AUTO REC indicator lit on the operation panel? Is the OFF-HOOK detection set as “OFF”? Is the off-hook Does the sional Adjustthe potentiometer RVl for (See sub-item 5.1.1 in Chapter 5.) Does the signal, appear at ihe Replace the IC3.

  • Page 204: Receptioncommunicationtrouble

    Reception Communication Trouble 6.1.10 Group 2 reception Trytosetthenon-loadedcableequalizerwith a DIP Switch S2 on the AUX-181 PC board. Equalizer Switch Combination V o l u m e JC6 on the NCU PC board. Open (Factory Setting) Links O - - 4 3 d B m Normal A p p l i c a b l e L i n e Small Noise...
  • Page 205 there any improvement? international FAX communication? setting, and then press That is, CED to DIS time interval adjustment. there any improvement? 1 Do the technical orooram setting, and then’prek That is, to try to start from 4800 bps. there any improvement? The telephone line quality Try to replace the MODEM PC...

  • Page 206: Troubleshooting The Power Supply Unit

    6.1.11 Power Supply Troubleshooting the Unit 200 V side input 90 to 132 VAC Input 190 to 250 VAC to the inlet. to the inlet. Turn on the AC power switch. 6 - 1 9...
  • Page 207 circuit check output about 10 VDC between PRE HEAT 29 of CN 1 it,“:,T!e L/H Fluorescent lamp lighting circuit check Connect a fluorescent lamp to CN3. Short-circuit @ and @ ofCN1 for 2 seconds, open them, then short- circuit @ and @ ofCN1. 6 - 2 0...
  • Page 208 ACTION Check Fuse 1 OPEN? Check Varistor VAl. Check Line filter Lt. L2, Cl-C5. Check Bridge diode Dl. Check Thermistor THI, TH2. Check Electrolytic Capacitor C6. C7. Check Diode D2, D3. Check Carbon resistor Rl. Check Power IC ICl Destroy? Check F.
  • Page 209 ACTION Check Microfuse F22 OPEN? Check F. R. Diode D24. Check Electrolytic Capacitor C30. Check Chopper regulator IC24 Destroy? Check Zener diode ZD24. Check Carbon resistor R29, 30. Check Metallized film resistor R28. Check Wire wound resistor R38. Check Metal plate cement resistor R31a. b. Check Potentiometer VR24, 25.

  • Page 210: Mechanical Troubleshooting

    Mechanical Troubleshooting Non-feed Document 6.2.1 Document is set on the document Operate the ADF Test of self-diagnosis. (Technical program setting No. 78) Check whether the side cover is properly closed. Replace the plate spring with a new one. 6 - 2 3...
  • Page 211 Note : 6 - 2 4...

  • Page 212: Multi-Feeding

    6.2.2 Multi-Feeding Two or more documents are fed at one time. Operate the ADF Test of self-diagnosis. (Technical program setting No. 78) Check for the separate rubber. 6 - 2 5...

  • Page 213: Documentjam

    6.2.3 Foreign matter such as paper waste and scotch tape remains on original travel surface? Check the original travel surface. requirements of the Manual. Thoroughly correct the curled original. 6 - 2 6...

  • Page 214: Documentskew

    6.2.4 Document Skew Put a smaller original in the carrier sheet, and fed them together. 6 - 2 7...

  • Page 215: Recording Paper Jam

    Recording Paper Jam 6.2.5 jams on the way and stays inside. Paper Operate the,Paper Cutting Test of 6 - 2 8...

  • Page 216: Recordingpaperskew

    Recording Paper Skew 6.2.6 Printed paper skews. Operate the Send/Receive Motor Running Test of self-diagnosis. (Technical program setting No. 80)

  • Page 217: Automatic Cutter Malfunction

    Automatic Cutter Malfunction 6.2.7 Paper is not cut. Operate the Paper Cutting Test Place cutter lever in position 6 - 3 0...

  • Page 218: Cutteralarm

    Cutter 6.2.8 Alarm This alarm ii displayed on the LCD. Automaticcutterfails to find home position. lever is well connected with the link. 6 - 3 1...

  • Page 219: * Heat Alarm

    This alarm is displayed on the LCD. Thermal head over- heated. * HEAT ALARM Allow it as it stands until it recovers naturally. (Recovery: About 10 min.) 6 - 3 2...
  • Page 220 C H A P T E R 7 : DISASSEMBLY & ASSEMBLY...
  • Page 221 DISASSEMBLY & ASSEMBLY CHAPTER 7. General ..........7 - 1 Precautions for Parts Replacement ......

  • Page 222: Disassembly & Assembly

    CHAPTER 7. DISASSEMBLY & ASSEMBLY The section explains the procedures for replacement of parts, assemblies and units in the field. General Precautions for Parts Replacement 7.1.1 Before starting disassembly and reassembly, always turn the AC power switch OFF, and pull out the AC plug. Since screws, small parts are likely to be lost, they should temporarily be attached to their original positions.

  • Page 223: General Mechanical Structure

    General Mechanical Structure The general mechanical structure of the OKIFAX OF-38 is shown in Figure 7.2.1 and Figure 7.2.2. 7 - 2...
  • Page 224 DOCUMENT TABLE OPE (5) OWER SUPPLY FEED ROLLER(U) RECORDING PAPER LAMP EXITING ROLLER Fig. 7.2.1...

  • Page 226: How To Disassemble And Perform Assembly

    How to Disassemble and Perform Assembly This item to explains how to disassemble and perform assembly in accordance with the following disassembly procedures. 7 - s...
  • Page 227 C o v e r t 7.3.14) PC Board Fig. 7.3...

  • Page 228: Frontcover

    7.3.1 Front Cover (1) Disassembly procedure Push a Release Lever with a thumb. Open the Compartment Cover with your hand. And remove a screw 0. COMPARTMENT COVER Fig. 7.3.1.2 7 - 7...
  • Page 229 Remove the two screw 0. SCREWS @ Fig. 7.3.1.3 Remove the two screws 0. (Ground cable) GROUND CABLE Fig. 7.3.1.4 7 - a...
  • Page 230 Remove the three connectors @, Fig. 7.3.1.5 (2) Reassembly procedure Reverse the each disassembly procedures. Holding the cover, and push backward the lever with a thumb of right hand. Make sure that the release lever can operate normally. LEVER Fig.7.3.1.6...

  • Page 231: Fluorescentlamp

    Fluorescent Lamp 7.3.2 (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Remove a screw @ on a Fluorescent Lamp Bracket. LAMP BRACKET Fig. 7.3.2.1 Remove the Fluorescent Lamp Bracket, and pull out the lamp to foreground. FLUORESCENT LAMP Fig. 7.3.2.2...
  • Page 232 (2) Reassembly procedure Reverse the each disassembly procedures. Label. 7 - 1 1...

  • Page 233: Ope(M).Pc Board

    7.3.3 (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Remove the four screws @. SCREWS @ SCREWS @ OPE (M) PC BOARD Fig. 7.3.3.1 Remove a Front Cover(L). Remove the two screws 7 , FRONT COVER(L) SCREW @ SCREW @ OPE (M) PC BOARD Fig.
  • Page 234 7.3.4 (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Remove a screw @ and a screw @. And remove a Standing Plate. STANDING PLATE Fig. 7.3.4.1 7 - 1 3...

  • Page 235: Modem Pc Board

    the board, C BOARD Fig. 7.3.4.2 Fig. 7.3.4.3 MODEM PC board (2) Reassembly procedure Reverse the each disassembly procedures, 7 - 1 4...

  • Page 236: Ncu Pc Board

    NCU PC Board (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Remove a screw @ referring Figure 7.3.4.1. Remove the two screws 0. And remove a Standing Plate. CONNECTOR CABLES @ NCU PC BOARD Fig. 7.3.5.1 Disconnect the three connector cables 12 . Pull out the board.

  • Page 237: Mcntz Pc Board, Mcntl Pc Board, Rr Pc Board, Mb Pc Board

    7.3.6 (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Disassemble the MODEM and the NCU PC boards. (Sub-items 7.3.4 and 7.3.5) RR PC BOARD CABLE CONNECTORS @ MB PC BOARD Fig. 7.3.6.1 Disassemble the MCNTZ PC board: Disconnect the five cable connectors 13 The board can be removed by lifting up.
  • Page 238 Disassemble the MCNTl PC board: Disconnect a cable connector @. The board can be removed by lifting up. CONNECTOR @ MCNTl PC BOARD POTENTI- OMETER MB PC BOARD Fig. 7.3.6.3 Fig. 7.3.6.4 MCNTl PC board 7 - 1 7...
  • Page 239 Disassemble the RR PC board: Disconnect a cable connector 0. The board can be removed by lifting up. CONNECTOR @ RR PC BOARD MB PC BOARD Fig. 7.3.6.5 Fig. 7.3.6.6 RR PC board...
  • Page 240 Disassemble the MB PC board: Disconnect the five cable connectors 8. MB PC BOARD CABLE CONNECTORS @ Fig. 7.3.6.7 Remove the four screws 0. SCREWS $j! SCREWS 0 MB PC BOAitD Fig. 7.3.6.8 Fig.7.3.6.9 MB PC board (2) Reassembly procedure Reverse the each disassembly procedures.

  • Page 241: Sidecover( Pcl, Pc2, Ope (5) Pc Board

    7.3.7 Side Cover(L), PCl, PC2, OPE(S) PC Board (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Disassemble the Side Cover(L) Remove a Shoulder Screw @. SIDE COVER(L) SHOULDER SCREW @ Remove the two screws @. SCREWS @ SIDE COVER(L) Fig.
  • Page 242 Remove the two screws SCREWS @ Fig. 7.3.7.3 The cover can remove asthe following figure. COVER Fig. 7.3.7.4 7 - 2 1...
  • Page 243 After remove the Side Cover (L), a PC1 and PC2 can remove from the machine. Fig. 7.3.7.5 Remove a screw 0, after remove the Side Cover(L). SIDE COVER(L) Fig. 7.3.7.6 7 - 2 2...
  • Page 244 and also disconnect the two connectors @ Remove the two screws @ OPE (5) PC BOARD Fig. 7.3.7.7 Remove the three screws and the board can be removed from the SCREWS @ Fig. 7.3.7.8 (2) Reassembly procedure Reverse the each disassembly procedures. 7 - 2 3...

  • Page 245: Compartment Cover, Document Width Detection Switches

    7.3.8 Compartment Cover, Document Width Detection Switches (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Disassemble the Compartment Cover: Remove a screw 0. COVER SCREW @ Remove a screw @. COVER Fig. 7.3.8.2 7 - 2 4...
  • Page 246 Disconnect a connector @ , then the cover can remove from the machine. Fig. 7.3.8.3 Document Width Detection switches assembly: Remove a screw @, after removed the Compartment Cover. COMPARTMENT COVER Fig. 7.3.8.4 7 - 2 5...
  • Page 247 The Document Width Detection switches can be removed by lifting Up from it. DOCUMENT WIDTH DETECTION SWITCHES Fig. 7.3.8.5 (2) Reassembly procedure Reverse the each disassembly procedures. 7 - 2 6...

  • Page 248: Rearcover

    Rear Cover Open the Compartment Coverwithyour hand. And remove a screw Fig. 7.3.9.1 Remove a screw 8, then the Rear Cover can remove from the machine. Fig. 7.3.9.2 (2) Reassembly procedure Reverse the each disassembly procedures. 7 - 2 7...

  • Page 249: Sidecover(R),Powersupplyunit

    7.3.10 Side Cover(R), Power Supply Unit (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Disassemble the Rear Cover. (Sub-item 7.3.9) Lift up the Side Cover(R), and shift the cover backward. The cover can be removed from the machine. SIDE COVER(R) Power supply unit assembly After removed the cover, remove the three screws @J POWER SUPPLY,...
  • Page 250 Disconnect a Connector @ . POWER SUPPLY UNIT Fig. 7.3.10.3 Also disconnect a connector @ ONNECTOR -POWERS U P P L Y U N I T Fig. 7.3.10.4 (2) Reassembly procedure Reverse the each disassembly procedures.

  • Page 251: Thermal Head Assembly

    7.3.11 Thermal Head Assembly (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Disassemble the Rear Cover. (Sub-item 7.3.9) Remove a Shoulder Screw @ SHOULD SCREW Fig.7.3.11.1 Remove the two screws @ SCREWS @ Fig. 7.3.11.2 7 - 3 0...
  • Page 252 Remove a screw 0. SCREW @ BOARD Fig. 7.3.11.3 Remove the two screws @ SCREWS @ Fig.7.3.11.4 7 - 3 1...
  • Page 253 Open the Cable-holding Plates 0. Fig. 7.3.11.5 Take out the Thermal Head Assembly as the figure, Remove a screw 38 , then the Thermal Guard can be removed from the assembly. Disconnect the two connectors @ THERMAL GUARD HERMAL HEAD ASS? F i g .
  • Page 254 The Thermal Head Assembly can be removed from the machine. Fig. 7.3.11.7 Thermal head assembly (2) Reassembly procedure Reverse until step 8 of the disassembly procedure. Set a portion “A” into a portion “8”. In this case, the springs @ must be on the Thermal Head Assembly. -ION “8”...
  • Page 255 After the Cable-holding Plates, set the assembly correctly as the figure. Reverse the remaining of the disassembly procedures. 7 - 3 4...
  • Page 256 7.3.12 (1) Disassembly procedure: Disassemble the Front Cover. (Sub-item 7.3.1) Disassemble the Rear Cover. (Sub-item 7.3.9) SHOULDER SCREW @ Fig.7.3.12.1 Remove the two screws @. Fig. 7.3.12.2 7 - 3 s...
  • Page 257 Remove the two screws SCREWS Fig. 7.3.12.3 Disconnect a connector on the SNS PC board. CONNECTOR IMAGE ;ENSOR Fig. 7.3.12.4 (2) Reassembly procedure Reverse the each disassembly procedures. the optical adjustment item of the chapter 6. 7 - 3 6...

  • Page 258: Adf Roller, Feed Rollers, Aux Pc Board

    7.3.13 ADF Roller, Feed Rollers, AUX PC Board (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Disassemble the Rear Cover., (Sub-item 7.3.9) Remove a Shoulder Screw @. SHOULDER SCREW @ Fig.7.3.13.1 Open a nail @ of the ADF Cover for removing. 7 - 3 7...
  • Page 259 Open a nail @ of the ADF Cover for removing. ADF COVER NAIL @’ Fig. 7.3.13.3 The ADF Cover can be removed from the machine. ADF COVER Fig. 7.3.13.4 7 - 3 8...

  • Page 260: Aux Pc Board

    Remove the two belts @ , and the ADF Roller @ can be removed from the machine. BELTS @ AUX PC BOARD’ Fig. 7.3.13.5 Feed rollers assembly Remove a Belt @, and the two Feed Rollers @ can be removed from the machine.
  • Page 261 AUX PC Board 7.3.14 (1) Disassembly procedure Disassemble the Rear Cover. (Sub-item 7.3.9) Disconnect the three connectors @ AUX PC BOARD CONNECTORS @ Fig. 7.3.14.1 Remove the screws 52 Fig. 7.3.14.2 7 - 4 0...
  • Page 262 Remove a screw 5 3 , the board can be removed from the machine. AUX PC BOARD SCREW @ Fig. 7.3.14.3 (2) Reassembly procedure Reverse the each disassembly procedures. 7 - 4 1...

  • Page 263: Pulse Motors & Gear Box, Cutter Unit, Print Roller

    Pulse Motors & Gear Box, Cutter Unit, Print Roller (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Disassemble the Rear Cover. (Sub-item 7.3.9) Disassemble the AUX PC board. (Sub-item 7.3.14) Remove a Shoulder Screw @ SCREW @I Fig. 7.3.15.1 Remove the five screws 9.
  • Page 264 The Pulse Motors & Gear Box can open as the figure. PULSE GEAR BOX Fig. 7.3.15.3 Cutter unit assembly Remove a Belt @ of the Cutter. (Refer to the above figure.) Remove the four screws @ Fig. 7.3.15.4 7 - 4 3...
  • Page 265 Take out the Cutter Unit. CUTTER UNIT Fig. 7.3.15.6 Cutter Unit Print roller assembly: Rotate the both side metal bushings @ about 90 degree either way, and lift it up. PRINT ROLLER Fig. 7.3.15.7 7 - 4 4...
  • Page 266 LIFT UP ROTATE 90 DEGREES Fig. 7.3.15.8 The roller can be pulled out as the figure. METAL BUSHING @ Fig. 7.3.15.9 (2) Reassembly procedure Reverse the each disassembly procedures, 7 - 4 5...

  • Page 267: Separation Rubber

    Separation Rubber 7.3.16 (1) Disassembly procedure Disassemble the Front Cover. (Sub-item 7.3.1) Remove a Shoulder Screw 0. Fig. 7.3.16.1 3) Takeoutthe Separation Rubber @ SEPARATION RUBBER @ (2) Reassembly procedure Reverse the each disassembly procedwes. 7 - 4 6...
  • Page 268 CHAPTER 8: BRIEF TECHNICAL DESCRIPTION...
  • Page 269 Other electro-magnetically driven parts and the optical system, etc., are referred to as the Scan Unit. 8.1.3 Overall Circuit Diagram Figure 8.1 .l isthe overall circuit diagram of the OKIFAX OF-38 facsimile transceiver. 8.1.4 General Block Diagram Figure 8.1.2 is the general block diagram of the OKIFAX OF-38 facsimile transceiver.
  • Page 270 circuit diagram Fig.8.1.1...
  • Page 272 Signal Flow This section explains the signal flows, such as G3 data sending, G3 data receiving, etc. Copy Mode Data Signal Flow G3 Data Send Signal Flow ( 2 ) G3 Data Receiving Signal Flow G2 Data Receiving Signal Flow 300 bps Protocol Signals Flow All of the above signal flows are shown in Figure 8.2.1 to Figure 8.2.6.
  • Page 274 Fig. 8.2.2 send signal flow...
  • Page 279 RS-232C Interface This section explains the RS-232C interface connection in general. (1) Encryption mode (2) External MODEM mode (3) Dump mode (4) ASCII printer mode All of the above mode connections are shown in Figure 8.3.1 to Figure 8.3.4. 8 - 1 1...
  • Page 281 OF-38 SYNCHRONOUS MODE RS-232C MULTIPLEX MODEM MOD’: HI-SPEED MODEM TO ANOTHER DTE PSTN NOTES: 1. DATA TRANSMISSION RATE FOR PROTOCOL AND FAX MESSAGE BECOMES THE SAME. 2. WITHOUT FALL BACK OPERATION. Fig. 8.3.2 External MODEM mode...
  • Page 282 OF-38 SYNCHRONOUS MODE INTERFACE COMPUTER DUMP 8 0 X MODE PSTN NOTES: 1. PROTOCOL - NONE (SAME AS 9136’s SCAN/PRINT MODE) 2. MESSAGE DATA - A4. 3.85kmn or 7.7Blmm 3. FLOW CONTROL - EXTERNAL CLOCK Fig.8.3.3 Dump mode...

Table of Contents