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OKIFAX 610 Service Handbook

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FACSIMILE TRANSCEIVER
OKIFAX 610/660
Field Service Handbook
DRAFT
VERSION 01
ISSUED TTIC
ISSUED DATE 21 OCT. 1998
?VI?

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  • Page 1 FACSIMILE TRANSCEIVER OKIFAX 610/660 Field Service Handbook DRAFT VERSION 01 ISSUED TTIC ISSUED DATE 21 OCT. 1998 ?VI?

  • Page 2: Table Of Contents

    CONTENTS CHAPTER 1. GENERAL INFORMATION GENERAL PERFORMANCE ..................1-1 GENERAL USER‘S FUNCTION ..................1-2 GENERAL MAINTENANCE FUNCTION................ 1-2 GENERAL APPEARANCE .................... 1-3 CHAPTER 2. SPECIFICATIONS STANDARD PERFORMANCE SPECIFICATIONS ............2-1 RELIABILITY........................2-7 CHAPTER 3. INSTALLATIONS GENERAL........................3-1 SITE SELECTION......................3-2 UNPACKING........................
  • Page 3 CHAPTER 5. TROUBLESHOOTING LCD FAILS TO DISPLAY AFTER POWER ON................5-1 5.2.1 HALF OF LCD DISPLAY FULL BLACK AFTER POWER ON AND EY FAILED (610 Only)..5-2 5.2.2 HALF OF LCD DISPLAY FULL BLACK AFTER POWER ON EY FAILED (660 Only)....5-3 5.3.1 LCD DISPLAY NORMAL ON STARTION BUT KEY FAILED (610 Only)........
  • Page 4 CHAPTER 7. MECHANICAL ASSEMBLY DRAWING AND PARTS LIST 7.1 OKIFAX 610 APPEARANCE ..................7-1 7.2 OKIFAX660 APPEARANCE (TAD BUILT-IN)..............7-2 7.3 OKIFAX 610 FACSIMILE UNIT ..................7-3 7.4 OKIFAX 660 FACSIMILE UNIT ..................7-4 7.5 OKIFAX 610 OPERATION PANEL ASM‘................7-5 7.6 OKIFAX 660 OPERATION PANEL ASM‘................7-6 7.7 OKIFAX 610 MAIN BODY UNIT..................
  • Page 5 CHAPTER 8. CIRCUIT DESCRIPTION MOTHER BOARD CIRCUIT................... 8-1 8.1.0 BLOCK DIAGRAM (SHEET 0/11) ................. 8-1 8.1.1 INTEGRATED FAX CONTROLLER (SHEET 1/11) ............. 8-1 8.1.2 PRINTER CONTROLLER (SHEET 2/11)..............8-9 8.1.3 SCANNER CONTROLLER (SHEET 3/11) ..............8-9 8.1.4 MOTOR DRIVERS (SHEET 4/11) ................8-9 8.1.5 SWITCH AND SENSORS (SHEET 5/11)..............

  • Page 6: Chapter 1. General Information

    CHAPTER 1 GENERAL INFORMATION...

  • Page 7: General Performance

    1.1 GENERAL PERFORMANCE (1) Type of appearance Desktop type (2) Compatibility ITU-T Group 3 facsimile transceiver (3) Applicable line Public Switched Telephone Network (PSTN) or Private Branch Exchange (PBX) (4) Communication mode Half duplex (5) Protocol ITU-T REC. T.30 (6) Coding scheme Modified Huffman (MH), Modified READ (MR) Modified Modified READ (MMR)

  • Page 8: General User's Function

    (16) Power source Voltage: AC 100~120 V 2A or AC 220~240 V 1A Frequency: 50/60 HZ 3 HZ 50/60 HZ 3 HZ 1.2 GENERAL USER'S FUNCTION (1) Auto dial - One-touch key (01~10) - 99 Alpha search dialing (32 digit numbers/20 characters) - Group dialing: One pre-programmed group max.

  • Page 9: General Appearance

    (4) Check sum display (5) LED test (6) Key test (7) LCD test (8) SENSOR test (9) CIS calibration (10) TSI/CSI setting (11) DP/MF setting (12) Resolution default (13) T30 (A-E) monitor (14) Set auto redial (15) Series pick up (16) Detect dial tone (17) Line equalizer (18) ECM mode...
  • Page 10 Figure 1.4.1 OKIFAX 610 General Appearance Figure 1.4.2 OKIFAX 660 General Appearance...
  • Page 11 Figure 1.4.3 OKIFAX 610 Operation Panel...
  • Page 12 Figure 1.4.4 OKIFAX 660 Operation Panel...
  • Page 13 CHAPTER 2 SPECIFICATION...

  • Page 14: Chapter 2. Specifications

    2.1 STANDARD PERFORMANCE SPECIFICATIONS Table 2.1.1 shows standard performance specifications. Table 2.1.1 Standard Performance Specification (1/6) Item Specifications Type of appearance Desktop type Compatibility ITU-T Group 3 facsimile transceiver Applicable Line General Switched Telephone Network (GSTN) Line interface 1) Impedance 600Ω...
  • Page 15 Table 2.1.1 Standard Performance Specifications ( 2/6 ) Item Specifications Transmission time 8 sec for memory transmission. 12 sec for feeder transmission. Note: This is the time for Phase C transmission in 3.85 line/mm and 14.4K bps speed in MMR code transmission. Minimum scan line time for 10 ms sending...
  • Page 16 Table 2.1.1 Standard Performance Specifications ( 3/6 ) Item Specifications 4) Shape Rectangular 5) Opacity Document allowing less than 40% of the scanner source light to pass through them Automatic Document Feeder Max 5 documents / A4 ( ADF ) Documents shall be placed face down on ADF stacker.
  • Page 18 Table 2.1.1 Standard Performance Specifications ( 4/6 ) Item Specifications Document jam removal Manual release 1) Width: 210 0.5 mm ( ISO A4 size ) Plain paper 2) Printing color: Black 3) XERO 4024 or L Paper (80 g/ ) Effective recording width 208 mm Printing system...
  • Page 19 Table 2.1.1 Standard Performance Specifications ( 5/6 ) Item Specifications heat alarm state: Higher than 65 at the Printing Overheat Protection head unit base. When an heat alarm state detected during reception, the FAX interrupts the reception as follows: - LCD displays “HEAT ALARM” - Generates an alarm tone.
  • Page 20 Table 2.1.1 Standard Performance Specifications ( 6/6 ) Item Specifications Ambient condition a) Temperature: 7 to 35 1) Operating condition b) Relative humidity: 30 to 80% ( Non- condensing ) a) Temperature: -20 to 60 for 48 hours 2) Storage condition b) Relative humidity: 20 to 85% ( Non- condensing ) Dimension 1) Width:...

  • Page 21: Reliability

    2.2 RELIABILITY Table 2.2.1 shows reliability items. Table 2.2.1 Reliability Item Specifications Feeder reliability Jam occurrence and misfeeds in the automatic document A.D.F. feeding will be less than one in 500 operations for all specificied documents. Multi-feed error will be less than one of 300 papers fed. Feeder reliability Jam occurrence and misfeeds in the automatic document A.P.F.

  • Page 22: Chapter 3. Installations

    CHAPTER 3 INSTALLATIONS...

  • Page 23: General

    3.1 GENERAL The following flowchart outlines the installation procedure. Site selection (See 3.2) Unpacking (See 3.3) Check of contents (See 3.4) (See 3.5) Installation of attachments (See 3.6) Ac cord connection Service function (See 3.7)

  • Page 24: Site Selection

    3.2 SITE SELECTION The installation site Shall be free from outside vibrations, dust, etc; Shall not be directly exposed to sunlight and sudden changes in temperature; Must be horizontal and flat; Should have enough space in front of FAX machine to allow recording paper and documents to be stacked;...
  • Page 25 ITEM ITEM ACCESSORY BOX ASM’ 0482346525 FACSIMILE UNIT 0482347500 LEFT PAD 0482348521 PE BAG B 9554224901 USER GUIDE 0482346500 HANDLE 0482313070 PE BAG C 9553101400 CARTON 0482346523 PAPER TRAY 0482346300 ID TAG 0482347600 RIGHT PAD 0482346522 Figure 3.3.2 Unpacking Procedure (2)

  • Page 26: Check Of Contents

    3.4 CHECK OF CONTENTS After having taken out the machine and accompanied accessories from the cardboard box, check the contents according to the following list: Item No. Contents name Q‘ty Remark FAX machine Handset and spring cord Ribbon roll 20 meters (W/Gear left-R &...

  • Page 27: Installation Of Attachments

    3.5 INSTALLATION OF ATTACHMENTS (1) Items Handset and answering machine (option). Ribbon roll and recording paper (2) Procedure 1) Handset and Answering Machine Plug in the telephone company‘s line set to LINE jack , attach handset set to upper on facsimile and connect to H/SET jack.
  • Page 28 3) Specifications of the Ribbon Roll Size: a. The diameter of the ribbon roll should be less than 36 m/m, width 216 mm and length 60 M. (Core of the ribbon roll is 0.5“) b. Use only the ribbon roll recommended for this machine to avoid poor printing. c.

  • Page 29: Ac Cord Connection

    3.6 AC CORD CONNECTION (1) The power supply is provided as follows: AC adapter (DC24V, 2.2A) class 1 AC input 220-240V 10 , 50/60 Hz (2) Insert the mains lead into the power inlet on the back panel of the machine. (3) Plug the mains lead into a single wall outlet with a correct power supply, which is near to the unit and is easily accessible.

  • Page 30: System Test

    3.7 SYSTEM TEST TURN ON THE POWER AND PRESS START [FUNCTION] KEY AT THE SAME TIME SYSTEM TEST ENTER PASSWORD ' 54188 ' OTHERWISE 5 SEC BACK TO STANDBY SCROLL UP (3.7.26) 3.7.1 ROM VERSION 23XXXXXX <[START]> (60 sec to standby) (60 sec to standby) <[STOP]>...

  • Page 31: Key Test

    (3.7.5) (3.7.5) 3.7.6 OTHER KEY KEY TEST PLEASE ENTER KEY <[START]> (60 sec to standby) (60 sec to standby) XXXX <[STOP]> <[STOP]> (60 sec to standby) STANDBY <[STOP]> [STOP] PRESSED (60 sec to standby) SCROLL DOWN SCROLL UP KEY TEST END (60 sec to standby) <[START]>...

  • Page 32: Cis Calibration

    (3.7.8) (3.7.8) 3.7.9 CIS CALIBRATION PUT WHITE PAPER <[START]> (60 sec to standby) (60 sec to standby) <[STOP]> PAPER INSERT STANDBY DOCUMENT IN (60 sec to standby) SCROLL DOWN SCROLL UP CIS CALIBRATED (60 sec to standby) <[START]> <[STOP]> (3.7.10) STANDBY 3.7.10 TSI/CSI SETTING...

  • Page 33: Resol. Default

    (3.7.11) (3.7.11) 3.7.12 RESOL. DEFAULT <[START]> (60 sec to standby) <[STOP]> ENABLE FOR USER (60 sec to standby) STANDBY SCROLL DOWN SCROLL UP <[START]> <[STOP]> SCROLL DOWN SCROLL UP DISABLE FOR USER (60 sec to standby) <[START]> <[STOP]> (3.7.13) STANDBY 3.7.13 T30(A-E) MONITOR <[START]>...

  • Page 34: Series Pick Up

    (3.7.14) (3.7.14) 3.7.15 SERIES PICK UP <[START]> (60 sec to standby) <[STOP]> SERIES=ON (60 sec to standby) STANDBY SCROLL DOWN SCROLL UP SCROLL DOWN SCROLL UP <[START]> <[STOP]> SERIES=OFF (60 sec to standby) <[START]> <[STOP]> (3.7.16) STANDBY 3.7.16 DETECT DIAL TONE <[START]>...

  • Page 35: Ecm Mode

    (3.7.17) (3.7.17) 3.7.18 ECM MODE <[START]> (60 sec to standby) <[STOP]> ECM=ON (60 sec to standby) STANDBY SCROLL DOWN SCROLL UP <[START]> <[STOP]> SCROLL DOWN SCROLL UP ECM=OFF (60 sec to standby) <[START]> <[STOP]> (3.7.19) STANDBY 3.7.19 MAKE RATIO <[START]> (60 sec to standby) <[STOP]>...

  • Page 36: Modem Speed

    (3.7.20) (3.7.20) 3.7.21 MODEM SPEED <[START]> (60 sec to standby) <[STOP]> START 2400 BPS (60 sec to standby) STANDBY SCROLL KEY SCROLL DOWN SCROLL UP TO CHANGE DIGIT <[START]> <[STOP]> (3.7.22) STANDBY 3.7.22 TX LEVEL <[START]> (60 sec to standby) <[STOP]>...

  • Page 37: Satellite Delay

    (3.7.24) (3.7.24) 3.7.25 SATELLITE DELAY <[START]> (60 sec to standby) <[STOP]> DELAY TIME= XX (60 sec to standby) TEN KEY STANDBY TO CHANGE DIGIT SCROLL DOWN SCROLL UP <[START]> <[STOP]> (3.7.26) STANDBY 3.7.26 SET CNG TX TIME <[START]> (60 sec to standby) <[STOP]>...
  • Page 38 3.7.29.1 300 BPS TX SPEED = 300 BPS <[START]> <[STOP]> (60 sec to standby) (60 sec to standby) SCROLL DOWN SCROLL UP SENDING MSG.= 2400 BPS <[STOP]> (60 sec to standby) <[STOP]> (60 sec to standby) INPUT 2 DIGITS SCROLL DOWN SCROLL UP MSG.= 55, 300 BPS <[STOP]>...
  • Page 39 3.7.29.2 1100 HZ TX TONE 1100 HZ <[STOP]> <[START]> <[STOP]> (60 sec to standby) (60 sec to standby) START TX. SCROLL DOWN SCROLL UP 2100 HZ TX TONE 2100 HZ <[START]> <[STOP]> <[STOP]> (60 sec to standby) (60 sec to standby) START TX.

  • Page 40: Prt. Service Set

    3.7.30 PRT. SERVICE SET <[START]> (60 sec to standby) <[STOP]> STANDBY PRINTING SCROLL DOWN SCROLL UP (3.7.1) (3.7.1) (3.7.1) ??18...

  • Page 41: Chapter 4. Maintenance

    CHAPTER 4 MAINTENANCE...

  • Page 42: Routine Inspection

    4.1 ROUTINE INSPECTION Basically, the routine inspection of following items is performed about every one year after the machine is installed. The description of routine inspection is shown in table 4.1.1. Table 4.1.1 Routine Inspection Inspection Item Procedure Remarks I.S. roller Clean with ethyl alcohol.
  • Page 43 A.D.F. Roller Contact Image Scanner A.D.F. Rubber Pad I.S. Roller Figure 4.1.1 Feed Roller A.P.F. Roller A.P.F. Rubber Pad A.P.F. Sensor Paper Sensor Figure 4.1.2...
  • Page 44 A.P.F. Sensor T.P.H. Roller Idle Roller Figure 4.1.3 Ribbon Sensor Thermal Printing Head Cover Switch Figure 4.1.4 When cleaning the Contact Image Sensor, lift up the scan roller. When returning the scan roller to the original position, confirm that its plastic bushings of the platen properly set into the grooves of the frame unit and turn the bushings to back then make sure the pin point of tab is tightly inserted to the frame surface.

  • Page 45: Chapter 5. Troubleshooting

    CHAPTER 5 TROUBLESHOOTING...

  • Page 46: Lcd Fails To Display After Power On

    5.1 LCD FAILS TO DISPLAY AFTER POWER ON Check if AC power supply normal Check if DC power supply Eliminate AC power fault normal Eliminate power supply Check if Key board plug fault loose...

  • Page 47: Half Of Lcd Display Full Black After Power On And Ey Failed (610 Only)

    5.2.1 HALF OF LCD DISPLAY FULL BLACK AFTER POWER ON AND KEY FAILED (610 only) Check if U11(ROM) inserted normal Check if Clock of XFC U1 Insert anew 133 is 19MHz Check if X4 (Crystal) Check if XFC Reset signal...
  • Page 48 5.2.2 HALF OF LCD DISPLAY FULL BLACK AFTER POWER ON AND KEY FAILED (660 only) Check if U11(ROM) inserted normal Check if Clock of XFC Insert anew U1 133 is 20MHz Check if XFC Reset Check if R166, C110, Y1 signal normal normal Solder anew or replace...
  • Page 49 5.3.1 LCD DISPLAY NORMAL ON STARTING BUT KEY FAILED (610 only) Check if there is signal SYSCLK of U24 -70 SYSCLK no:Check U24 -69 Check if there is output signal in STP of U1 -38 to Check soldering of U1...
  • Page 50 5.3.2 LCD DISPLAY NORMAL ON STARTING BUT KEY FAILED (660 only) Check if there is signal SYSCLK of Y1 - 5 SYSCLK no:Check R166, C110, Y1 Check if there is output signal in STP of U1 - 38 to 47 Check soldering of U1 Solder anew Check if there is output...

  • Page 51: Time Display Abnormal

    5.4 TIME DISPLAY ABNORMAL POWER ON Check BT2 > 4.0V Check D18 > 4.5V Solder anew D18 POWER OFF Check BT2 Replace battery Check D22 > 3V Check X1, C6, C7, R8...

  • Page 52: Works Pressing Key But Speaker Remains Mute(610 Only)

    5.5.1 IT WORKS PRESSING KEY BUT SPEAKER REMAINS MUTE (610 only) Press [AUTO] key and check if there is signal in U1 -119 Check U25 -3 if there Solder anew U1 is signal output Check U25 -5 if there Check C101, R190...

  • Page 53: Works Pressing Key But Speaker Remains Mute(660 Only)

    5.5.2 IT WORKS PRESSING KEY BUT SPEAKER REMAINS MUTE (660 only) Press [AUTO] key and check if there is signal in U1 -119 Check U23 -3 if there Solder anew U1 is signal output Check U23 -5 if there Check R126, C97 is signal output Check J11 on keyboard Check U23...

  • Page 54: Reset On Starting

    5.6 RESET ON STARTING Check if D1, D2, R2, R3, R4, U2 normal Check if Solder anew D1, D2, R2, U2 -4 : 4.4V R3, R4, U2 U2 -5 : 5V Check if R55, R56, Check if U1 -2 is High C35, Q4, D15 (4.5V) Check soldering state of...

  • Page 55: Lcd Display "No Paper" While Recording Paper Is Loaded

    5.7 LCD DISPLAY “ NO PAPER ” WHILE RECORDING PAPER IS LOADED Check if J8 connector loose Check if there is broken wire or incorrect Insert anew connection of PAPER SENSOR Check J8 -3 it should be Solder anew Low while paper loaded Check sensor Check U1 -91 ??10...

  • Page 56: Failed To Detect Paper Jam Sensor

    5.8 FAILED TO DETECT PAPER JAM SENSOR check if there is broken wire in paper jam sensor assembly When out of paper J9 -3 is High Solder anew Check U1 -90 (Low) Check Sensor Check circuit when paper Check R45 loaded : J9 -3 is Low Check Sensor Check U1...

  • Page 57: Motor Remains Motionless

    5.9 C.I.S. MOTOR REMAINS MOTIONLESS Check if Connector connected properly Check if motor stuck Check if 24V, voltage when it is truned normal manually Are the signals to driving Power supply circuit IC U7 -1, 2,3, Driving IC U7 defective defective 4 normal (Note)

  • Page 58: Motor Remains Motionless

    5.10 T.P.H. MOTOR REMAINS MOTIONLESS Check if J4 connector loose Check if 24V Insert anew power supply is normal Check power supply Check if the control signal of U6 is normal Check U1 -115, 116, Check if ZD3 are normal 117, 118 Replace ZD3 Check stepping motor...
  • Page 59 Check if there is the sound of Bee in Speaker on document feeding Check DOC. Sensor Check C.I.S. motor Circuit driving circuit Check J11 -13 is Low (0V) Check if J11 -13 Low Check U1 -86 is while Sensor is Low (0V) triggered Check Sensor...

  • Page 60: Over Feeding Document Until "Doc Jam

    5.12 OVER FEEDING DOCUMENT UNTIL “ DOC. JAM ” Check A.D.F. Sensor circuit Check if J11 - 14 is Low while Sensor is triggered Check if sensor Check U1 - 86 connector loose ??15...

  • Page 61: Too Light Or Too Thick

    5.13 TOO LIGHT OR TOO THICK Check if D9, D10 connected inversely Check U3 - 7 white Solder anew level > 2V Check U3 Check U1 - 67, 68 ??16...

  • Page 62: Copy Full Black

    5.14 COPY FULL BLACK J3 - 10 = 12V Q1 - B pin = 0.7V (see 5.13) Check U1 - 82, R35 Check if Q1 - C, E Pin conductive (0 V) Check Q1 Check if R36, R37 normal Solder anew R36, R37 Check if Q2 - C, E Pin conductive (12 V) Check Q2...

  • Page 63: Full White Printing

    5.15 PULL WHITE PRINTING Check if there is the broken wire in J1 Check if J1 connector falls out Jumpering Check if Q3 - D = 24 V Insert anew Check power supply Check if T.P.H. control signals of CLK, LATCH, DATA of J1-13,14,15 Check U1 Check if T.P.H.
  • Page 64 Check if J1 - 9,10,11,12 has signals to four strobes during printing Check if J1 connector Check if U1 - 33 to 37, loose 48,64 soldered actually Insert anew Check other pins of U1 Solder anew Replace T.P.H. ??19...

  • Page 65: Failed To Record A Message(660 Only)

    5.17 FAILED TO RECORD A MESSAGE (660 only) Monitor speaker normal Check NCU connection Check if U7 - 7 when making sound to Handset Insert anew Check U18 Check U8 - 38 Check if J10 - 13 =Low Check J10 on NCU ??20...

  • Page 66: Failed To Transmit Successfully(610 Only)

    5.18.1 FAILED TO TRANSMIT SUCCESSFULLY (610 only) Check if there is signal in U24 - 45 while handshaking Receiving circuit defective Check U24 - 44 signal Whether U24 - 46 voltage normal Check U22 - 1 signal Whther there is 19...

  • Page 67: Failed To Transmit Successfully(660 Only)

    5.18.2 FAILED TO TRANSMIT SUCCESSFULLY (660 only) Check if there is signal in U8 - 38 while handshaking Receiving circuit defective Check U8 - 29 signal Whether U8 - 25, 35, 45 voltage normal Check U10 - 7 signal Power supply circuit Whther there is 25 defective MHz lock in U8 - 76...

  • Page 68: Failed To Receive Successfully(610 Only)

    5.19.1 FAILED TO RECEIVE SUCCESSFULLY (610 only) Check if there is signal in J10 - 10 while receiving message NCU Circuit fault Check if there is Check if it is 0 volt in signal in U23 - 7 U23 - 6...

  • Page 69: Failed To Receive Successfully(660 Only)

    5.19.2 FAILED TO RECEIVE SUCCESSFULLY (OKI 660 only) Check if there is signal in J10 - 10 while receiving message NCU Circuit fault Check if there is signal in U9 - 1 Check if it is 0 volt in U9 - 2 U6 defective Check if there is signal in U8 - 38...
  • Page 70 5.20 FAILED TO DETECT HANDSET Pick up the handset Check if there is voltage on the two ends of AR2 while picking up the handset J1 or Line Cord defective Is there voltage on the common point of K2 and PH2-2 L1 defective Check if there is voltage on...

  • Page 71: Failed To Receive Automatically; It Keeps Ringing

    5.21 FAILED TO RECEIVE AUTOMATICALLY; IT KEEPS RINGING Make an incoming call Is there AC voltage on the common point of R6 and (Reference NCU Circuit) PH2-2 while local line is ringing Is there AC voltage on the C6, J1 or Line Cord common point of PH 2-2 defective and ZD3 (+)

  • Page 72: Failed To Receive Manually

    5.22 FAILED TO RECEIVE MANUALLY Press HOOK and wait for DIAL TONE Check if there is voltage (Reference NCU Circuit) on R1 and R3 Measure the primary side K2, L1, J1 JP9 JP10 or of T1 to see if there is Line cord defective voltage Measure the secondary...
  • Page 73 OKIFAX610/660 M E C H A N I C A L T R O U B L E S H O O T I N G PROBLEM CAUSE ACTION 1. DOC. SKEWED 1. DOCUMENT LOADING OUT 1. ADVISE THE OPERATOR TO OF GUIDES.
  • Page 74 6. DOC. NO FEEDING 1. DEFECTIVE DOCUMENT 1. REPLACE DOC. SENSOR SENSOR. 2. A.D.F ROLLER IS LOCKED. 2. REPLACE A.D.F. CLUTCH SPRING. 3. DEFECTIVE I.S. MOTOR 3. REPLACE I.S. MOTOR. ??29...
  • Page 75 PROBLEM CAUSE ACTION 7. PAPER JAM OR SKEW. 1. A.P.F. SENSOR FALLEN. 1. SNAP-IN FIT THE A.P.F. SENSOR IN IT’S POSITION. 2. A.P.F. CLUTCH SPRING 2. REPLACE A.P.F. CLUTCH SPRING. UNLOCKED. 3. LOWER GUIDE TOO NARROW. 3. REPLACE NEW LOWER GUIDE. 4.
  • Page 76 PROBLEM CAUSE ACTION 13. PAPER MULTI-FEED 1. A.P.F. COIL SPRING IS 1. REPLACE THE A.P.F. COIL LOST OR FATIGUE. SPRING. 2. A.P.F. SEPARATION 2. REPLACE NEW ONE. RUBBER SHEET IS ABRADED. 14. THE CENTRAL AREA 1. A.D.F ROLLER IS 1. PULL A.D.F. ROLLER OF DOCUMENT IS DIFFICULT TO ROTATE DOWNWARD FOR SEVERAL...

  • Page 77: Chapter 6. Mechanical Disassembly And Reassembly

    CHAPTER 6 MECHANICAL DISASSEMBLY AND REASSEMBLY...

  • Page 78: General

    This chapter explains the procedures for replacement of parts, assemblies and units in the field. 6.1 GENERAL 6.1.1 PRECAUTIONS PARTS REPLACEMENT 1. Before starting dismantlement and assembly, always pull out the AC plug. 2. Since screws, small parts are likely to be lost, they should temporarily be attached to their original positions.

  • Page 79: General Mechanical Structure

    GENERAL MECHANICAL STRUCTURE The general mechanical structure of the FAX machine is shown in Figure 6.2 Figure 6.2...

  • Page 80: Ribbon Assembly

    6.3 HOW TO DISASSEMBLE STRUCTURE This item explains how to dismantle and assemble this FAX machine. Figure 6.3 shows the procedure flow of dismantlement as the generalization. The detailed procedure of dismantlement is explained from sub-item 6.3.1 to6.3… ANSWER MACHINE(OPTION) (6.3.1) HANDSET (6.3.1) TAKE-UP BUSHING ASSEMBLY...
  • Page 81 The steps of dismantlement, reversing the steps of assembly, are shown as follows. For the convenience of explanation, some definitions are stated as follows: i The Front of machine means the face of operation panel. ii The Left and Right mean the left and right hand side facing the front of machine. iii The directions of Clockwise and Counterclockwise are defined viewing from the right of machine.

  • Page 82: Operation Panel Assembly

    6.3.2 Operation Panel Assembly (1) Loosen 6 pieces of M3 8 tapping screws on Back Cover Assembly. (2) Pull out the connector of Document Sensor Assembly from Keyboard Assembly. (3) Rotate Back Cover Assembly clockwise, pull out connectors on the corner of the Operation Panel Assembly and take out microphone.

  • Page 83: Back Cover Assembly

    6.3.3 Back Cover Assembly (1) Remove ground wire, then take out ground spring. (2) Loosen one piece of M2.6 5 tapping screw(with flange) on push button, and take out push button and the catch. Back Cover Assembly A.D.F. Sensor Arm Operation Panel Catch I.S.
  • Page 84 6.3.4 Ribbon Assembly (1) Push the button legend to be mould-in and is located on the upper-right corner of operation panel. (2) With thumbs, push the green right and left catches, have “1” and “2” legend to be mould-in, on both sides of the upper frame assembly to rotate clockwise and with forefingers, hook on the edge of the upper frame.

  • Page 85: Bottom Cover Assembly

    6.3.6 Paper Tray Assembly Face the front of machine. Press Bottom Cover with two hands, and take out Paper Tray Assembly toward yourself with fingers. i. Paper Cover and Paper Tray Face the right side of paper tray. With a hand hold paper tray and with another hand hold paper cover, then separation paper cover and paper tray.

  • Page 86: Frame Unit

    6.3.8 Frame Unit Put the frame unit on table and faces the scanning face of I.S. Cut off all the cable ties around the unit. (1) Front Cover Turn the frame unit to face the scanning face of I.S.. Loosen 4 pieces of M3 8 tapping screws on both sides of upper frame, take out the cover.

  • Page 87: Upper Frame Assembly

    6.3.9 Upper Frame Assembly (1) Cut off cable tie and tear off black adhesive plaster, take the cable of A.P.F. sensor out of its constrain- channel on upper frame. (2) With thumbs, push the green right and left catches, have "1" and "2" legend to be mould-in, on both sides of the assembly to rotate clockwise and with forefingers, hook on the edge of the upper frame.
  • Page 88 (6) Upper Guide Assembly i. Loosen 3 pieces of M3 8 tapping screws around the assembly. ii. With straight screwdriver, Separate the pin sticking out of bushing with its holes on upper frame, then rotate the bushing till the upper guide assembly can be removed. iii.
  • Page 89 (11) T.P.H. Platen Assembly i. Use a straight screwdriver to push the hook of bushings on both sides of the assembly out of its slot on the upper frame, take out the assembly. ii. Remove a black bushing on one side of the assembly. Release the snap-in finger of gear, takes out gear and another bushing.

  • Page 90: Lower Frame Assembly

    6.3.10 Lower Frame Assembly (1) Power Board i. Turn the frame unit, the scanning face of I.S. towards table, to face the back of power board. Loosen all the tapping screws of ground wires. ii. Loosen 4 pieces of M3 8 tapping screws and pull out connectors on the power board. Remove the power board.

  • Page 91: How To Replace The Ribbon

    6.4 HOW TO REPLACE THE RIBBON The “NO RIBBON” message will be shown on the ribbon is exhausted. The ribbon assembly should be replaced according to the following steps: 1. Plug off power. 2. Push the button on the upper-right corner of operation panel after the handset remove from the cradle, and open the operation panel.
  • Page 92 6.5 HOW TO RETREAT THE PAPER JAM 1. Lift the top face of paper on paper tray then pull the bundle of paper to completely release it, push down the button to open the operation panel after the handset remove from the cradle, and open the operation panel.
  • Page 93 CHAPTER 7 MECHANICAL ASSEMBLY DRAWING AND PARTS LIST...

  • Page 94: Upper Frame Asm

    OKIFAX 610 APPEARANCE………………………………………………..……...1 OKIFAX 660 APPEARANCE…………………………………………………..…...2 OKIFAX 610 FACSIMILE UNIT……………………………………………………3 OKIFAX 660 FAXSIMILE UNIT……………………………………….…..………4 OKIFAX 610 OPERATION PANEL ASM’…………………………….….….……5 OKIFAX 660 OPERATION PANEL ASM’……………………………..………….6 OKIFAX 610 MAIN BODY UNIT…………………………………………………...7 OKIFAX 660 MAIN BODY UNIT…………………………………………………...8 BACK COVER ASM’………………………………………………………………...9 7-10 UPPER FRAME ASM’………………………………………………………………10 7-11 UPPER GUIDE ASM’……………………………………………………………….11...
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  • Page 108: Chapter 8. Circuit Description

    CHAPTER 8 CIRCUIT DESCRIPTION...

  • Page 109: Mother Board Circuit

    8.1 MOTHER BOARD CIRCUIT (OKIFAX 610) The mother board version 7XFEMV05 is the first version that begins mass-production and the circuit diagrams consists of 11 schematics which are described in the following sections. 8.1.0 Block Diagram (sheet 0/10) The extended FAXENGINE chip set consists of a Integrated Fax Controller (XFC-MV) and a modem chip (RF144EFXL).
  • Page 110 Table 8.1.1-1 XFC Pin Functions Pin Description Pin Name Pin No. Input Output (Note: Active low signals have an “n” pin name Type Type endlng.) CPU Control Interface MIRQn Modem interrupt, active low. (Hysteresis In, Internal Pullup.) SYSCLK System clock. (Hysteresis In.) TSTCLK Test clock.
  • Page 111 Table 8.1.1-1 XFC Pin Functions Pin Description Pin Name Pin No. Input Output (Note: Active low signals have an “n” pin name Type Type endlng.) Operator Panel Interface OPO[7:0] [38:40][42:44] Keyboard/LED strobe [7:0]. [46:47] OPI[3:0] [49:52] Keyboard retrun [3:0]. (Pullup, Hysteresis In.) LEDCTL Indicates outputs OPO[7:0] are for LEDs.
  • Page 113 Table 8.1.1-2 XFC Signal Characteristics Input Hysteresis Pullup Description Type (V max.) (V min.) (V min.) Resistance(K ohm) CMOS input 0.3*VDD 0.7*VDD Hysteresis 0.3*VDD 0.6*VDD Hysteresis/Pull up 0.3*VDD 0.6*VDD 35-150 TTL input TTL/Pull up 35-150 CMOS input 0.3*VDD 0.7*VDD Absolute Input Range = -0.5 to VDD+0.5 Input Operating Absolute...
  • Page 114 Table 8.1.1-3 XFC Memory Map Chip select Address (Hex) External to XFC Internal to XFC 000000-007FFF SRAM 00E000-00FC00 Internal RAM 00FC00-00FDFF I/O (N/C) 00FE00-00FEFF Internal registers 00FF00-00FFFF Modem CAS0 400000-4FFFFF DRAM CAS1 500000-5FFFFF DRAM ROMCS FE0000-FFFFFF 8.1.1.1 Bus Cycle Timing The processor and external bus cycle timing is defined by bclk (an internal signal).
  • Page 115 < > >< < > SYSCLK > < > < TSTCLK > < SYNC > < < > /DEBUG > < < > EXT IRQ < > < > < > Figure 8.1.1-2 0 Wait State Access with 1 Wait State TSTCLK >...
  • Page 116 Table 8.1.1-4 External Bus Signal Timing Parameters Interrupts hold BE setup BE hold REGDMA delay (CPU register tRGD* access) tSL+10 REGDMA delay (DMA access) tDMD* tSL+10 /WAIT delay tWSD* tSL+12 /RD,/WR delay /RD,/WR delay (Delay On=1) tSDD* tSL+10 /RD,/WR delay(Delay On=2,3) tSDD /WR delay (Early Off) tSDE*...
  • Page 117 8.1.1.5 RESET logic and Watchdog Timer There are two power resets, battery power reset (/BATRST) and prime power reset (/PWRDWN). The battery power reset initializes battery backed-up logic when battery is first applied or changed. Prime power reset initializes all non-battery powered logic when system power is turned on. Another reset is generated by watchdog timer which guards against firmware lockup.
  • Page 118 8.1.6 Battery and Power Down Reset (Sheet 6/10) Prime power failure is detected by a voltage comparator that compares +5V supply with a constant reference voltage 4.5V provided by transistor voltage source. Capacitor C35 is charged to 4.5V when power on, and hold a while to be reference level when power down. Battery BT1 backs up XFC, SRAM and DRAM in the beginning of power down, and BT2 will take over to back up XFC and SRAM when BT1 discharges to lower level than BT2.
  • Page 119 Table 8.1.7-1 Modem RF144EFXL Pin Functions Pin Name Signal Description Input Output Name Type Type OVD1 Connect to digital ground SWGAINI Connect to SWGAINO ECLKIN1 Connect to SWGAINI SYNCIN1 Connect to EYESYNC No connection No connection No connection Connect to analogy ov ground No connection No connection No connection...
  • Page 120 Table 8.1.7-1 Modem RF144EFXL Pin Functions Pin Name Signal Description Input Output Name Type Type OVD2 Connect to digital ground /PORI /MRST Power-on-reset input XTLI Connect to Crystal/Oscillator XTLO Connect to Crystal/Oscillator XCLK SYSCLK 19MHz output YCLK 9.5MHz output +5VD1 Connect to digital +5V power /IRQ2 DCLK...
  • Page 121 Table 8.1.7-2 Digital Interface Characteristics Parameter Symbol Min. Typ. Max. Units Test Condition Input High Voltage Types IA and IB Types IC and ID 0.8*Vcc Input High Current Vcc=5.25V, Vin=5.25V Type IB Type IC Input Low Voltage Type IA, IB, ID -0.3 Type IC -0.3...
  • Page 122 The crystal X1 for modem RFRF144EFXL is three overtone and needs inductor L12 and C109 for resonation at third harmonic 38.00053MHz. The analog power and ground are decoupled from +5V and digital ground by bead cores. Power-on reset /MRST is provided by XFC. Output of received analog signal is available on pin VOICE and is multiplexed with signal TONE before input to audio amplifier U18B.

  • Page 123: Block Diagram (Sheet 0/11)

    8.2 MOTHER BOARD CIRCUIT (OKIFAX 660) The mother board version 7XFEMV05 is the first version that begins mass-production and the circuit diagrams consists of 11 schematics which are described in the following sections. 8.2.0 Block Diagram (sheet 0/11) The extended FAXENGINE chip set consists of a Integrated Fax Controller (XFC-MV) and a modem chip (RFX144V24).
  • Page 124 Table 8.2.1-1 XFC Pin Functions Pin Description Pin Name Pin No. Input Output (Note: Active low signals have an “n” pin name Type Type endlng.) CPU Control Interface MIRQn Modem interrupt, active low. (Hysteresis In, Internal Pullup.) SYSCLK System clock. (Hysteresis In.) TSTCLK Test clock.
  • Page 125 Table 8.2.1-1 XFC Pin Functions Pin Description Pin Name Pin No. Input Output (Note: Active low signals have an “n” pin name Type Type endlng.) Operator Panel Interface OPO[7:0] [38:40][42:44] Keyboard/LED strobe [7:0]. [46:47] OPI[3:0] [49:52] Keyboard retrun [3:0]. (Pullup, Hysteresis In.) LEDCTL Indicates outputs OPO[7:0] are for LEDs.
  • Page 127 Table 8.2.1-2 XFC Signal Characteristic Input Signal Characteristics Pullup Input Type Description Hysteresis Resistance (V max) (V min) (V min) (K ohm) CMOS Input 0.3*VDD 0.7*VDD Hysteresis 0.3*VDD 0.6*VDD Hydteresis/Pullup 0.3*VDD 0.6*VDD 35-150 TTL Input TTL/Pullup 35-150 CMOS Input 0.3*VDD 0.7*VDD Absolute Input Range=0.5 to VDD+0.5 Input Type...
  • Page 128 Table 8.2.1-3 XFC Memory Map Chip select Address (Hex) External to XFC Internal to XFC 000000-007FFF SRAM 00E000-00FC00 Internal RAM 00FC00-00FDFF I/O (N/C) 00FE00-00FEFF Internal registers 00FF00-00FFFF Modem CAS2 300000-3FFFFF DRAM CAS0 400000-4FFFFF DRAM CAS1 500000-5FFFFF DRAM ROMCS FE0000-FFFFFF 8.2.1.1 Bus Cycle Timing The processor and external bus cycle timing is defined by bclk (an internal signal).
  • Page 129 < >< > < > SYSCLK > < > < TSTCLK > < SYNC > < < > /DEBUG > < < > EXT IRQ < > < > < > Figure 8.2.1-2 0 Wait State Access with 1 Wait State TSTCLK >...
  • Page 130 Table 8.2.1-4 External Bus Signal Timing Parameters BE setup BE hold REGDMA delay (CPU register tRGD* access) tSL+10 REGDMA delay (DMA access) tDMD* tSL+10 /WAIT delay tWSD* tSL+12 /RD,/WR delay /RD,/WR delay (Delay On=1) tSDD* tSL+10 /RD,/WR delay(Delay On=2,3) tSDD /WR delay (Early Off) tSDE* tSL+10...

  • Page 131: Printer Controller (Sheet 2/11)

    8.2.1.5 RESET Logic and Watchdog Timer There are two power resets, battery power reset (/BATRST) and prime power reset (/PWRDWN). The battery power reset initializes battery backed-up logic when battery is first applied or changed. Prime power reset initializes all non-battery powered logic when system power is turned on. Another reset is generated by watchdog timer which guards against firmware lockup.

  • Page 132: Battery And Power Down Reset (Sheet 6/11)

    8.2.6 Battery and Power Down Reset (Sheet 6/11) Prime power failure is detected by a voltage comparator that compares +5V supply with a constant reference voltage 4.5V provided by transistor voltage source. Capacitor C35 is charged to 4.5V when power on, and hold a while to be reference level when power down. Battery BT1 backs up XFC, SRAM and DRAM in the beginning of power down, and BT2 will take over to back up XFC and SRAM when BT1 discharges to lower level than BT2.
  • Page 133 Table 8.2.7-1 Modem RF144V24 Pin Functions Signal Interface Signal Interface Label Type Label Type VAA2 VCC through power Crystal/Clock Circuit XTLI decoupling filter Line Interface Crystal/Clock Circuit XTLO -POR MDP:-RESET (72); XIA:- Diagnostic Circuit XCLK POR (3) CLKIN MDP:IACLK (50) Diagnostic Circuit YCLK VDD3...
  • Page 134 Table 8.2.7-2 Digital Interface Characteristics Parameter Symbol Min. Typ. Max. Units Test Condition Input High Voltage V IH Types IA and IB V CC Types IC and ID 0.8 V CC V CC Input High Current I IH VCC=5.25V, V IN =5.25V Type IB Type IC Input Low Voltage...

  • Page 135: Memory (Sheet 8/10)

    Table 8.2.7-3 Analog Interface Characteristics Name Type Characteristics Value SPKR O(DF) Minimum Load Maximum Capacitive Load 0.01uF Output Impedance Maximum Output Voltage 2.0 VP-P Reference Voltage* +2.5 VDC 20mV DC Offset Voltage RIN (MICOUT) I (DA) Input Impedance > 70 K Maximum AC Input Voltage 1.7 VP-P Reference Voltage*...

  • Page 136: Key Board Circuit

    OP00 to OP07 strobe each key matrix column in sequence, and OPI0 to OPI3 are read by XFC to determine which key is pressed. (4) Document Sensor & ADF Sensor. Detects any document fed in guide. (5) Microphone (OKIFAX 660 only) An Electric Condenser Microphone unit (ECM) supports audio sensitivity of -63dB.

  • Page 137: Ncu Board Circuit

    Picture data/Protocol/Tonal signals etc. (2) Dialling Method: There are two kinds of dialling method used in OKIFAX 610/660. Both of them can be used in the tone and pulse switching system. (a) SW1 to choice tone or pulse mode. then CPU controls the signal and send the phone number out.
  • Page 138 “Low” signal as a handset detected signal. When J2(pin4) become “low” signal it tells CPU the handset being picked up. (7) TAM MEMO, OGM Record (For OKIFAX 660): When record Memo or OGM, K5 switches to N.O., and power supply provid 24V (DC) from J3.

  • Page 139: Tel Board Circuit

    8.5 TEL BOARD CIRCUIT DIAGRAM 8.5.1 Ringing Mode: Ring signal path: J1 à LP2 à JP9( or K5 ) àL1 àJP1( or CF1//LF1 ) à K2 à C6 à ZD9,ZD10 à R2 à DB1 à J5(pin12) àJ5(pin13) àC21//ZD7(piezo ringer supply) à C34//ZD8(VDD). Another path exists from C6 and R39 to FCI//C24//R41 for the frequency detector input.
  • Page 140 Hook Mode: 8.5.3 In on-hook state the circuit is supplied by a very small current to maintain retention of stored numbers and ringing melody. The hook transistor is off and the pin10 (HS) is forced to zero by R29 and R30//Q4BE. If the telephone is disconnected from line memories are not lost since C34 keeps charging VDD for a limited period of time.
  • Page 141 3. Dialing problem 3-1. Are there any converted polarization in Q1 Q2 Q3 Q5 Q7 D13,D14 and ZD6 3-2. Are there key‘s bus good 3-3. Are there some voltage in IC1 pin4 3-4. Does any oscillation output from Y1 3-5. Does any signal output from IC1 pin5 3-6.
  • Page 142 8.6 POWER SUPPLY (TTF-2866-2) SPECIFICATION 8.6.1 Power Supply Unit (1) Introductions The Skynet Model TTF-2866-2 is a fanless switching mode power supply used for facsimile. (2) Input Specifications (a) Input voltage The range of input voltage from 180VAC to 270VAC. (b) Input frequency The range of input frequency is from 47HZ to 63HZ.
  • Page 143 (4) General Features (a) Efficiency The efficiency is higher than 72% while measuring at nominal line and max. load. (b) Hold up time The hold up times is longer than 16mS at min. input and max. load which is measured form the end of the last charging pulse to when the main output drop to 95% output voltage.
  • Page 144 (7) Mechanical Specification (a) Dimensions: Dimensions shown in mm (inch) as above. Tolerance specified is + - 0.4mm. (b) Connectors TB1--AC input: Meet IEC 320/ CEE 22 standard TB2--DC output: JAEIL-G-7P-S3T2-E TB3--DC output: JAEIL-S-8P-S2T2-EF TB4--+24Viso & +5Viso DC output: JAEIL-S-8P-S2T2-EF (c) DC output pin assignment +24Viso +5Viso...
  • Page 145 8.6.2 Power Circuit Diagram (1) Circuit Description (a) EMI filter C1, C2, C3, C4, and L3(NF1) constitute EMI filter circuit. As the operating freqt of this power supply circuit is 60KHx, radio frequency interference wave will incur under the st electricate of the highe frequency in order to prevent it from inte other electric products via its input terminal.
  • Page 146 (e) The part of the secondary side D3,D4, D5, D6, D7, D8, C12, C14, C16, C22, C25, and C18, form rectifying circuit, it transforms AC low voltage into DC low voltage L4, L5, L6, L7, L8, C15, C17, C23, C26, and C19 to form high fequencly filtering circuit to cause the reduction of high frequency ripple and noise.

  • Page 147: Chapter 9. Fax Circuit Diagram

    CHAPTER 9 FAX CIRCUIT DIAGRAM...

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