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Samsung SF6500 Service Manual

Laser fax machine
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SERVICE
FACSIMILE
FACSIMILE
SF6500/SF6600
Manual
CONTENTS
4. Theory of Operation
5. Circuit Description
9. PCB Diagrams
10. Block Diagram
11. Wiring Diagram
12. Schematic Diagrams

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Summary of Contents for Samsung SF6500

  • Page 1: Table Of Contents

    FACSIMILE SF6500/SF6600 Manual SERVICE FACSIMILE CONTENTS 1. Precautions 2. Specification 3. Installation 4. Theory of Operation 5. Circuit Description 6. Disassembly and Reassembly 7. Maintenance & Troubleshooting 8. Electrical Parts List 9. PCB Diagrams 10. Block Diagram 11. Wiring Diagram...
  • Page 2 ELECTRONICS Samsung Electronics Co.,Ltd. June. 1998 Printed in Korea. JC68-61013A...

  • Page 3: Precautions

    Class 1 laser product spacing between components and the printed Product laser de la premi•re classe circuit board. Laser beam wavelength: 780nm Longueur d'ondes de rayon laser: 780nm Laser beam power: 0.18mW +/-0.009mW Puissance de rayon laser: 0.18mW +/-0.009mW Samsung Electronics...
  • Page 4 There could be a danger of explosion should not be opened, crushed, or burned for and subsequent operator injury and/or disposal. equipment damage if incorrectly installed. 2. Be sure to replace the battery with the same or equivalent type recommended by the manufacturer. Samsung Electronics...

  • Page 5: Specification

    Resolution Horizontal : 11.8 lines/mm (300 dpi) Vertical : STANDARD : 3.85 lines/mm (98 Lpi) FINE : 7.7 lines/mm (196 Lpi) 11.8 lines/mm (300 Lpi) SUPER FINE : 15.4 lines/mm (392 Lpi) Photo scale : 64 shades Samsung Electronics...
  • Page 6 Legal : 8.5 ×14 inches (216 × 356 mm) Weight : 16 ~ 24 Ibs (60 ~ 90 g/m Thickness : 0.08 ~ 0.12 mm Recording paper cassette Basic cassette : 250 sheets (Letter size/A4 size) Reference weight : 75 g/m (20 Ibs) Samsung Electronics...
  • Page 7 CCITT T.30 SOUND Key click : Frequency 1.6 kHz, Duration 30 msec. Alarm : Frequency 1.6 kHz, Duration 2 msec. Transmission completion : Normal 1 sec./Error 1 sec. Operator call : 15 sec. (1.28 sec. On/1.28 sec. OFF) Samsung Electronics...
  • Page 8 Specification POWER SUPPLY Input voltage : 220V AC, 50/60Hz Power consumption Standby : 13 watts Copy : 170 W (typical) 580 W (max.) High voltage power supply Input : 24 Vdc, 1.0 A Output : 4.0 kVdc at 100 Mohm (Transfer Voltage) -1.10 kVdc at 40 Mohm (Charge Voltage) -900 Vdc at 100 Mohm (Retransfer Voltage) -400 Vdc at 40 Mohm (Bias Voltage)

  • Page 9: Installation

    PC. Adjust the guides to match the width of the paper. Document exit tray Figure 3.3 2. Fold out the extender, if necessary. The extender can be folded out up to 3 steps. Figure 3.5 Figure 3.4 Samsung Electronics...

  • Page 10: Printer Exit Tray

    3-10. If you want to power the machine off, unplug the power cord. Figure 3.8 Note : If documents are lost from memory due to a power failure, the machine automatically prints a report when power is supplied. Samsung Electronics...
  • Page 11 3. Press the cover release button to open the cover, 5. Press the cover release button to open the cover and remove the toner cartridge. Then close the and install the toner cartridge. cover. Install all trays, and plug the power cord. Figure 3.10 Figure 3.13 Samsung Electronics...
  • Page 12 P3 connector on the main board. Figure 3.14 4. Unplug all the connectors from the board. Figure 3.17 Make sure the PCB supporter is also properly inserted. Figure 3.15 PCB supporter Insert the P1 connector fully until it stops. Figure 3.18 Samsung Electronics...
  • Page 13 5. Follow the instructions on the installation screens. 6. Restart Windows. Note : For the latest information on installing and using the printer with Windows applications, consult the Read Me and Online Help files in the SF6000 Series MFP program group window. Samsung Electronics...
  • Page 14 B) before Windows is restarted. 1. Open the application's 'File' menu. 6. Restart Windows 95. 2. Choose 'Print (or Printer) Setup.' 3. In the 'Print Setup' dialog box, choose 'Options' to open the 'SF6000 Series' dialog box. Samsung Electronics...
  • Page 15 The new assignment will become effective when Windows restarts. Scan Port: This port is pre-configured to COM9 in Windows 3.x and Windows 95. Your SF6000 Series MFP Scanner software is automatically configured to connect to COM9. This assignment is fixed. Samsung Electronics...
  • Page 16 Cancel button: This is the default button that you would normally press to close the MFP manager display and keep the MFP manager running in the background. The MFP manager must be running in the background when you want to use your SF6000 Series MFP. Samsung Electronics...
  • Page 17 3. Unplug all the connectors from the boards, and take out the board cover. Figure 3.23 Note : You must observe the correct direction when you insert the IC. See the direction of the IC currently inserted. Figure 3.21 Samsung Electronics...

  • Page 18: Loading Paper

    Figure 3.26 Figure 3.24 2. To load the paper into the cassette, press down Note : If you fail to fan the paper, it may cause the metal plate in the cassette. multi-paper feeding and jams. Figure 3.25 3-10 Samsung Electronics...
  • Page 19 See 'User Options' on page 3-16. Your To use Letter size paper, change the position of the machine is preset to use A4-sized paper. paper guide before loading paper. Figure 3.29 Samsung Electronics 3-11...
  • Page 20 Figure 3.35 outwards so that the tabs are placed at the desired position. 3. Insert the guide into the desired position and fasten the screw. Figure 3.33 Figure 3.36 3-12 Samsung Electronics...
  • Page 21 Note : If the toner inside the unit is shifted to one 2. Hold the toner cartridge by the green tab and side, it may cause degraded print quality. remove the used unit, if necessary. Figure 3.40 Figure 3.38 Samsung Electronics 3-13...
  • Page 22 6. Holding the toner cartridge unit in hand, fit the tabs on either side of the cartridge the either side of the compartment as shown, and slide it down firmly into your fax machine until it clicks in place. Figure 3.44 Figure 3.42 3-14 Samsung Electronics...
  • Page 23 4. Close the fuser cover. 2. Remove the cleaning felt used. Figure 3.48 Figure 3.46 Note : You must install a new cleaning felt when you install a new toner cartridge. If not, the print quality may be degraded. Samsung Electronics 3-15...

  • Page 24: Memory Clear

    These instructions assume you've followed the steps DATA.' under 'System Data Settings in User-mode' and the machine is asking if you want to change one of the 1. Press MENU, then one-touch 01 'SYSTEM DATA.' options listed here. The LCD displays user-selectable options. 3-16 Samsung Electronics...
  • Page 25 Press 1 to turn this feature on. If you want to set the will be printed out on a second page. time duration that the machine activates the power save mode, enter the time in 24-hour format. Press 2 to turn this feature off. Samsung Electronics 3-17...
  • Page 26 Enter the number of minutes (from 1 to 7) using the into memory or not before dialing the number when number keypad. you try to send or reserve a fax. 3-18 Samsung Electronics...
  • Page 27 30 minutes or 8 hours after PC printing. Press 1 to select 8 hours. The machine turns off automatically 8 hours after PC printing is completed. Press 2 to select 30 minutes. The machine turns off automatically 30 minutes after PC printing is completed. Samsung Electronics 3-19...
  • Page 28 The machine must receive a ring signal with a specified inactive time,as well as an Ring Off Check active time. If the inactive time of the ring signal is longer than the value of the Time Ring Off Check Time,the machine will not consider it a valid ring signal. 3-20 Samsung Electronics...

  • Page 29: Lcd Display

    MESSAGE ERROR : problem occurred during phase C of session. LINE ERROR : machine cannot connect or has lost connection with the remote machine. Additional messages, not shown above, will appear in the TX/RX journal printed in service mode. Samsung Electronics 3-21...

  • Page 30: Disassembly And Reassembly

    1. Open the control panel by hand, remove the two 2. Close the Control panel, and take out the Scan screws A. Remove the TX piece. Then remove unit. Unplug the connector from the Scan PBA. three screws B. TX piece Scan Unit Figure 6.1 Figure 6.2 Samsung Electronics...
  • Page 31 ¥ Clean the surface of the rubber pad with ethyl alcohol. After wiping it, be sure to dry completely with a soft cloth. Check the rubber wear. If the wear reaches 1/2 its original thickness, replace it Figure 6.4 with a new one. Samsung Electronics...

  • Page 32: Ope Unit

    2. Turn the scan unit over. Place the unit on soft cloth to avoid the accidental scratch on the surface of the unit. 3. Unplug the OPE connector from the scan PBA and remove the one earth screw. OPE unit Tie stopper Figure 6.6 Figure 6.7 Samsung Electronics...
  • Page 33 ¥ When you assemble the scan paper guide, make 3. Remove the one special screw securing the CIS. sure the tabs in the guide fit in place. Figure 6.9 Figure 6.11 Samsung Electronics...
  • Page 34 Scan paper guide. Feed roller D. Exit roller Figure 6.12 Note: Clean the surface of the rollers with ethyl alcohol. After wiping them, be sure to dry completely with a soft cloth. Figure 6.8 Samsung Electronics...
  • Page 35 3. Turn the Scan unit back. Remove the two screws securing the Scan paper guide, and take out the scan paper guide. Figure 6.15 Scan Paper Guide 6. Remove the two screws securing the motor to the motor bracket. Motor bracket Figure 6.8 Figure 6.16 Samsung Electronics...
  • Page 36 3. Remove the one screw securing the Scan PBA should remove : and take out the PBA. ♦ Scan unit (See page 6-1) 2. Turn the Scan unit over and unplug all connectors from the scan PBA. Figure 6.19 Figure 6.20 Samsung Electronics...
  • Page 37 PBA. ¥ After reassembling, operate the machine to make sure it works properly. ¥ After reassembling, make sure there is no foreign material in the LCD. Figure 6.22 Samsung Electronics...
  • Page 38 1. Open the Operation unit assembly by pressing 2. Remove the Toner lever inserted into the main the release button on the left side of the machine. frame by squeezing both sides of the lever and pulling it out. Toner Lever Figure 6.25 Figure 6.24 Samsung Electronics...
  • Page 39 Figure 6.26 2. Remove the five screws , and take out the TX 4. Remove the two screws from the colored bar. piece. Then remove the four screws from each Side cover. TX piece Figure 6.27 Figure 6.29 6-10 Samsung Electronics...

  • Page 40: Top Cover

    Figure 6.30 6-14 Top Cover 1. Before you disassemble the Top cover, you should remove : ♦ Side covers (See page 6-10) 2. Remove the four screws from the Top cover and take out the cover. Figure 6.32 Samsung Electronics 6-11...

  • Page 41: Rear Cover

    1. Before you disassemble the Speaker, you should remove : ♦ Left side cover (See page 6-10) 2. Remove the two screws securing the Speaker to the main frame and unplug the speaker connector. Then take out the Speaker. Speaker Figure 6.35 6-12 Samsung Electronics...
  • Page 42 ♦ Left side cover (See page 6-10) below; then replace the clutch. 2. Remove the one screw securing the clutch and take out the clutch and its spring. Figure 6.38 Spring Latch Clutch Figure 6.37 Samsung Electronics 6-13...
  • Page 43 1. Before you disassemble the Gear, you should Z52/25. remove : ♦ Left side cover (See page 6-10) 2. Remove the E-ring from the Gear Z52/25. Then take out the Gear Z52/25. Gear Z27 Gear Z52/25 Figure 6.42 Figure 6.41 6-14 Samsung Electronics...
  • Page 44 Mech board. Then take out the 2. Remove the six screws securing the Driver to the main frame and unplug the connector from the board. Mech board. Then take out the Driver. Figure 6.45 Figure 6.44 Samsung Electronics 6-15...
  • Page 45 ♦ Right side cover (See page 6-10) 2. Unplug the connector (H8) from the HVPS board and release the connector wire by removing the cover switch that ties the wires in a bundle. Cover switch Figure 6.48 6-16 Samsung Electronics...
  • Page 46 Sheet cover Figure 6.52 Figure 6.50 6-17 Samsung Electronics...
  • Page 47 SMPS along the groove until the pin connector on the SMPS board clicks into the 3. Remove the two screws securing the SMPS to the connector on the Mother board. main frame. Figure 6.54 Figure 6.56 6-18 Samsung Electronics...
  • Page 48 HVPS board. Then take out the ♦ Top cover (See page 6-11) Mother board. ♦ SMPS (See page 6-18) 2. Unplug all the connectors and remove the two screws from the Mother board. Mother Board Figure 6.60 Figure 6.59 Samsung Electronics 6-19...
  • Page 49 Note: When you reassemble the Fuser, if it is Cover switch difficult to plug the connector to the SMPS board, take out the SMPS by removing the two screws securing the SMPS, then plug the connector to the SMPS board. Figure 6.61 6-20 Samsung Electronics...
  • Page 50 ¥ Make sure that you do not remove the two screws located on the top of the LSU. ¥ If it is difficult to plug the connectors to the Mother board, remove the SMPS first and then plug in the connectors. Samsung Electronics 6-21...
  • Page 51 3. Remove the two screws from the LIU board, and unplug the flat cable from the Main board, and take out the LIU board. LIU Board LIU Board Figure 6.69 Figure 6.67 6-22 Samsung Electronics...
  • Page 52 3. Unplug the connector (H9) from the HVPS 6. Take out the upper plate. board. Release the connector wire by removing the cover switch that ties wires in a bundle. Hinge Bracket Hinge Shaft E-ring HVPS Board Cover Switch Figure 6.71 Figure 6.73 Samsung Electronics 6-23...
  • Page 53 ♦ Upper frame (See page 6-23) 2. Remove the four screws from the upper frame and separate the Upper frame into the Upper guide and Plate. Upper Plate Pick up Sensor Figure 6.75 Upper Guide Figure 6.74 6-24 Samsung Electronics...
  • Page 54 Upper frame into the Upper guide and Plate. Upper Plate Figure 6.78 Upper Guide 5. Take out the Idle roller. Figure 6.76 3. Remove the spring securing the Idle roller to the Upper guide. Idle Roller Figure 6.77 Figure 6.79 Samsung Electronics 6-25...

  • Page 55: Transfer Roller

    2. Remove the four screws from the upper frame and separate the Upper frame into the Upper guide and Plate. Transfer Roller Locker Figure 6.81 Note: Be careful to keep the surface of the roller clean. Figure 6.80 6-26 Samsung Electronics...
  • Page 56 ♦ Side covers (See page 6-10) ♦ Top cover (See page 6-11) ♦ Gear Z52/25 (See page 6-14) 2. Remove the two screws located next to the Gear Z52/25. Then take out the Developer driver. Figure 6.83 Samsung Electronics 6-27...
  • Page 57 ♦ Guide paper (See page 6-28) 2. Unplug the connector (H6) from the HVPS board, then release the connector wire by removing the cover switch that ties the wire in a bundle. Manual Sensor Cover switch Figure 6.87 Figure 6.86 6-28 Samsung Electronics...
  • Page 58 ♦ Top cover (See page 6-11) 2. Unplug the connector (H3) from the HVPS board, then release the connector wire by removing the cover switch that ties the wire in a bundle. Micro Switch Bracket Figure 6.89 Cover switch Figure 6.88 Samsung Electronics 6-29...
  • Page 59 Bushing Bushing Shaft Figure 6.91 Note: Check the roller for any stain. If stained, wipe it off with soft cloth dampened with water. If the roller is heavily worn, replace Figure 6.90 it with a new one. 6-30 Samsung Electronics...
  • Page 60 Note: Check the roller for friction and deformation. If the rubber is heavily worn or stained, replace it with a new one. If the roller is stained, wipe it off with soft cloth dampened with water. Figure 6.92 Samsung Electronics 6-31...
  • Page 61 Note: When you reassemble the plates, you have of the main frame to open the upper frame. to insert it into the correct position. Each position is marked as shown below. Ground-OPC Bias Figure 6.97 Figure 6.95 6-32 Samsung Electronics...
  • Page 62 Be careful not to lose the spring. Figure 6.100 Pad Frame Figure 6.99 Samsung Electronics 6-33...
  • Page 63 3. Pull up the MFP board so that the connector and PCB supporter are released. Take out the MFP board. Figure 6.101 PCB supporter Connector 2. Unplug all the connectors from the boards. Figure 6.103 Figure 6.102 6-34 Samsung Electronics...
  • Page 64 1. Remove the four screws securing each side cover. Pull the side cover slightly upwards to take it away from the main frame. 3. If you want to remove the motor bracket, pull it out. Figure 6.106 Figure 6.104 Samsung Electronics 6-35...
  • Page 65 ♦ Left side cover (See page 6-35) 2. Remove the E-ring from the feed clutch. Then take out the feed clutch. 2. Unplug the connector. Remove the two screws securing the solenoid, and take out the solenoid. Figure 6.110 Figure 6.108 6-36 Samsung Electronics...
  • Page 66 1. Before you disassemble the control board, you then replace the clutch. should remove : ♦ Left side cover (See page 6-35) 2. Unplug the two connectors from the board. Remove the two screws from the board and take out the board. Figure 6.113 Samsung Electronics 6-37...
  • Page 67 See the figure 6.113. the roller. 4. Remove the two idle springs shown inside main frame. 5. Remove the latch clutch and its spring. Idle spring Feed clutch Spring Latch clutch Figure 6.117 Figure 6.115 6-38 Samsung Electronics...
  • Page 68 1. Before you disassemble the holder, you should remove : ♦ Right side cover (See page 6-35) 2. Remove the spring. Turn the holder in vertical and take it away from the frame. Figure 6.118 Figure 6.120 Samsung Electronics 6-39...
  • Page 69 Figure 6.123 cassette and take out the pad. Be careful not to lose the spring. Pad Frame Figure 6.122 6-40 Samsung Electronics...
  • Page 70 MA1-MA5, A22 PRINT 400000 ASIC CS, CHSYNC 3FFFF SCLK, SDATA ADO-AD15 DRAM (4 Mbyte) 000000 MA1-MA7 PIC_ CS DDIN Figure 5-1 Memory & I/O Map PIC_ INT L I U PIC_ DRQ PIC DARK Figure 5-2 Hardware Interface Signals Samsung Electronics...
  • Page 71 In order to access 8 Mbyte, /RAS0 is bank selected SCLK by ASIC. SDATA 5-1-6 Scanner Control /VDATA IMAGE SENSOR /APCSH The CIS equipped with 300 dpi scanning density and 2.5 ms for 1 line storage time. Figure 5-3 LSU Interface Timing Diagram Samsung Electronics...
  • Page 72 This board controls PC interface function, such as PC printing, scanning, and PC faxing. It controls the data signal between PC and this machine. This board contains 40-pin connector to connect to the main board, 36- pin centronics connector to connect to PC, and CL-CD1283 chip, 74LS245, 74HC00 to perform IEEE-1284 operation. Samsung Electronics...
  • Page 73 TIT (Transformer Input from Transformer) : The signal is applied to LIU input of the modem. ROT (Receive Output to Transformer) : The signal from line is applied to modem. Remote Modem Bell Figure 5-5 Modem AFE and Interface Samsung Electronics...
  • Page 74 CPU through UART Rx. *MHS (Manual Hook Switch) : This signal comes to ILIU chip through hook switch when the handset is off-hooked and applies to CPU through Figure 5-7 Ring Detect UART Rx. RING Figure 5-8 Off-Hook Detect Samsung Electronics...
  • Page 75 MF dialing is activated by receiving digital data from CPU through UART Tx. ILIU chip adjusts DTMF frequency and level through RFO and RFI and sends out the DTMF signal. RING LINE Remote RCV Figure 5-9 MF/DP Dialing Figure 5-10 Remote Receive Samsung Electronics...
  • Page 76 ¥ Lamp voltage control circuit. OUTPUT LINE BRIDGE SNUBBER INPUT SMOOTHING FILTER RECTIFIER CIRCUIT AC120V CIRCUIT 60Hz LAMP LAMP START CONTROL CIRCUIT LAMP CONTROL SIGNAL INPUT VOLTAGE CONTROL VOLTAGE DETECTOR DRIVE CIRCUIT CIRCUIT Figure 5-11 SMPS Block Diagram Samsung Electronics...
  • Page 77 SCF I/O Control Signal Pin no. Pin name Description Status CN1-2 SCF_SEL SCF select L: SCF CN1-3 SCFMTRSTRT SCF motor start L: start CN1-4 SCFCLTCH SCF clutch control H: paper feed CN1-5 SCFPEMPT SCF paper empty L: no paper Samsung Electronics...
  • Page 78 MA1-MA5, A22 PRINT 400000 ASIC CS, CHSYNC 3FFFF SCLK, SDATA ADO-AD15 DRAM (4 Mbyte) 000000 MA1-MA7 PIC_ CS DDIN Figure 5-1 Memory & I/O Map PIC_ INT L I U PIC_ DRQ PIC DARK Figure 5-2 Hardware Interface Signals Samsung Electronics...
  • Page 79 In order to access 8 Mbyte, /RAS0 is bank selected SCLK by ASIC. SDATA 5-1-6 Scanner Control /VDATA IMAGE SENSOR /APCSH The CIS equipped with 300 dpi scanning density and 2.5 ms for 1 line storage time. Figure 5-3 LSU Interface Timing Diagram Samsung Electronics...
  • Page 80 This board controls PC interface function, such as PC printing, scanning, and PC faxing. It controls the data signal between PC and this machine. This board contains 40-pin connector to connect to the main board, 36- pin centronics connector to connect to PC, and CL-CD1283 chip, 74LS245, 74HC00 to perform IEEE-1284 operation. Samsung Electronics...
  • Page 81 TIT (Transformer Input from Transformer) : The signal is applied to LIU input of the modem. ROT (Receive Output to Transformer) : The signal from line is applied to modem. Remote Modem Bell Figure 5-5 Modem AFE and Interface Samsung Electronics...
  • Page 82 CPU through UART Rx. *MHS (Manual Hook Switch) : This signal comes to ILIU chip through hook switch when the handset is off-hooked and applies to CPU through Figure 5-7 Ring Detect UART Rx. RING Figure 5-8 Off-Hook Detect Samsung Electronics...
  • Page 83 MF dialing is activated by receiving digital data from CPU through UART Tx. ILIU chip adjusts DTMF frequency and level through RFO and RFI and sends out the DTMF signal. RING LINE Remote RCV Figure 5-9 MF/DP Dialing Figure 5-10 Remote Receive Samsung Electronics...
  • Page 84 ¥ Lamp voltage control circuit. OUTPUT LINE BRIDGE SNUBBER INPUT SMOOTHING FILTER RECTIFIER CIRCUIT AC120V CIRCUIT 60Hz LAMP LAMP START CONTROL CIRCUIT LAMP CONTROL SIGNAL INPUT VOLTAGE CONTROL VOLTAGE DETECTOR DRIVE CIRCUIT CIRCUIT Figure 5-11 SMPS Block Diagram Samsung Electronics...
  • Page 85 SCF I/O Control Signal Pin no. Pin name Description Status CN1-2 SCF_SEL SCF select L: SCF CN1-3 SCFMTRSTRT SCF motor start L: start CN1-4 SCFCLTCH SCF clutch control H: paper feed CN1-5 SCFPEMPT SCF paper empty L: no paper Samsung Electronics...

  • Page 86: Maintenance & Troubleshooting

    DOOR OPEN OR The top cover is not securely latched. Press down on the cover until you feel it FUSER COVER OPEN latch securely. The fuser cover is not securely latched. Replace the cover firmly until it clicks in place. Samsung Electronics...
  • Page 87 'TONER EMPTY, REPLACE[CARTRIDGE]' message appears in the display, and the machine stops. Replace with a new one. WARM UP The machine is warming up and is off Wait until the machine is on-line. PLEASE WAIT line. Samsung Electronics...
  • Page 88 This test mode will display and check the current 4. Press ENTER to initiate the test mode. ROM level in your machine. SF6500 PATTERN TEST CHECK SUM=C0, V01 There are 2 different pattern tests which can be run to determine the condition of the LSU and the printer components.
  • Page 89 PC. The dex 825 has to be conditioned o that remote PC can perform remote diagnostics. 5. Press ENTER. 1. Press MENU, One-touch 04 'SYSTEM SETUP'. 6. Press STOP to exit routine. 2. Press until 'REMOTE DIAGNOSIS PROTECTION ?' is displayed. 3. Press ENTER. Samsung Electronics...
  • Page 90 Auto answer? Manual operation? See chart 7-4-7 See chart 7-4-8 See chart 7-4-9 See chart 7-4-6 Do you hear Sending OK? Lift the handset PC printing OK? dial tone? See chart 7-4-12 See chart 7-4-10 See chart 7-4-11 Samsung Electronics...
  • Page 91 Replace power supply Measure voltage on Measure on the +5 V ? the scan b'd (CN7-1) OPE b'd (CN1-1) Check harness OK ? Replace harness Replace OPE b'd +5 V ? and LCD module Check harness Normal? Replace harness Samsung Electronics...
  • Page 92 Logic 'H' ? the main board the main board 19.6608 MHz ? Check Vcc (+5 V) from P1-16 to P1-18 Replace the OPE board Replace power Vcc ≥ 4.5V ? Replace the main b'd supply Replace the main board Samsung Electronics...
  • Page 93 +24 V? Logic 'H'? enable (P2-27) in the main board Check Replace mother motor pulse (P1-9, 10, 11, 12) in the main board Replace the Normal? main b'd Replace the scan b'd Document fed? Replace the motor ass'y Samsung Electronics...
  • Page 94 See chart 7-4-4 Check +5V, +12V Works properly? (P1-16, 17, 18, P1-1 CIS LED lights in the main b'd) Normal? Replace the power Check PIN27 of supply Replace CIS +5 V ? Replace the main b'd Samsung Electronics...
  • Page 95 See chart 7-4-5 Normal? Replace CIS Replace the main b'd Measure Replace the Copy produced? +12 V? LED +12V on scan b'd scan b'd (CN 3-9) Check harness Replace the Good? harness Replace the power supply 7-10 Samsung Electronics...
  • Page 96 Maintenance & Troubleshooting Good printer Good copy quality? Run the printer test quality? Run the CIS test Normal? Replace the main b'd Replace the CIS Good copy quality? Samsung Electronics 7-11...
  • Page 97 7-4-7 Malfunction in Auto Answer START Call the machine Auto answer? from another phone Check ring signal on P4-8 in main b'd Check ring signal on U1-25, 28 in LIU b'd Replace the main b'd Normal? Replace the LIU b'd 7-12 Samsung Electronics...
  • Page 98 Press OHD and press START Goes on line? Check signal in P4-12 in main b'd Check control Logic 'L'? signal(P1-13, 14) in the LIU b'd Replace the LIU b'd Logic 'L'? Replace the flat Replace the main b'd cable Samsung Electronics 7-13...
  • Page 99 Auto answer? Receive data? from another phone See chart 7-4-7 Check Tx/Rx signal Check the in P1-4, P1-7 in the Normal? telephone line LIU b'd Replace the LIU b'd Normal? Notify to customer Replace the main b'd 7-14 Samsung Electronics...
  • Page 100 7-4-10 Malfunction in Transmission START Load document in Call the receiving Press the START Document fed? feeder machine button See chart 7-4-4 The document sends out? Replace the LIU b'd Sending works properly? Replace the main b'd Samsung Electronics 7-15...
  • Page 101 Run 'Print test page' Check application S/W. Works properly? Check bi-directional centronics cable Replace centronics cable. Make sure the MFP board is installed properly. Install MFP board correctly. Printer self test Replace MFP board. Replace Main b'd 7-16 Samsung Electronics...
  • Page 102 ? removed ? Does the trouble Replace the cartridge. occur even with another cartridge ? Check the HVPS and replace the HVPS necessary Samsung Electronics 7-17...
  • Page 103 LSU unit ? Does the trouble occur even Replace the toner cartridge. with another toner cartridge ? Check the developer driver unit and then replace it if necessary. See page 6-27. 7-18 Samsung Electronics...
  • Page 104 Check LSU unit and then replace it if necessary. 7-4-14 High Background Density (Toner in the background areas) START Does the trouble occur even with Replace the cartridge. another cartridge ? Check HVPS and replace it if necessary. Samsung Electronics 7-19...
  • Page 105 Connect the harness properly or Is charge wring harness in HVPS O.K ? replace it. Does the trouble occur even with Replace the HVPS. anther HVPS ? Check the LSU unit and then replace it if necessary. 7-20 Samsung Electronics...
  • Page 106 Does the trouble occur even Replace the cartridge. with another cartridge ? Is the heat roller of the Replace the fuser unit. fuser unit damaged ? Check the LSU unit and then replace it if necessary. Samsung Electronics 7-21...
  • Page 107 7-4-19 White Vertical Line START Is there enough toner in the Replace the cartridge. developer unit ? Is the heat roller of the fuser unit Replace fuser unit. damaged ? Check the LSU unit and then replace it if necessary. 7-22 Samsung Electronics...
  • Page 108 Does the trouble occur even Replace the cartridge. with another cartridge ? Nomal voltage in HVPS ? Replace the HVPS or connect Its wiring harness O.K ? the harness properly. Check the LSU unit and then replace it if necessary. Samsung Electronics 7-23...
  • Page 109 Maintenance & Troubleshooting 7-4-21 Avoid the Image START Replace the HVPS or Nomal voltage in HVPS ? Its wiring harness O.K ? connect the harness properly. Check the transfer roller and then replace it if necessary. 7-24 Samsung Electronics...
  • Page 110 Check harness and +5V ? replace harness Check SCF-START on the 2'nd cassette b'd (CN1-3) Logic 'L' ? Replace main b'd Check motor pulse (CN2-1.2.3.4) in the 2'nd cassette b'd Replace 2'nd Normal ? cassette b'd Replace motor ass'y Samsung Electronics 7-25...

  • Page 111: Electrical Parts List

    1201-000105 IC-OP AMP:82,SOP,8P,150MI 1201-000178 IC-OP AMP:318,SOP,8P,150M 1201-000289 U26,28,42 IC-OP AMP:4558,SOP,8P,150 1201-000423 IC-VOLTAGE COMP.:393,SOP 1202-000164 R122,123 R-CHIP:68Kohm,5%,1/10W,DA 2007-000001 R116,120 R-CHIP:75Kohm,5%,1/10W,DA 2007-000002 R66,159,242-245,274 R-CHIP:120ohm,5%,1/10W,DA 2007-000023 R10,11,20,21,160 R-CHIP:200ohm,5%,1/10W,DA 2007-000026 R183-188,190-192,268 R-CHIP:200ohm,5%,1/10W,DA 2007-000026 R282 R-CHIP:200ohm,5%,1/10W,DA 2007-000026 R19,182,189,200,201 R-CHIP:0ohm,5%,1/10W,DA,T 2007-000029 R289,315 R-CHIP:0ohm,5%,1/10W,DA,T 2007-000029 Samsung Electronics...
  • Page 112 2007-000468 R262,263 R-CHIP:1Mohm,5%,1/10W,DA 2007-000477 R25,85,86,146,291 R-CHIP:2.2Kohm,5%,1/10W,D 2007-000493 R105,128 R-CHIP:20Kohm,5%,1/10W,DA 2007-000546 R157,166 R-CHIP:220Kohm,5%,1/10W,D 2007-000565 R43,55,301 R-CHIP:220ohm,5%,1/10W,DA 2007-000572 R102,264 R-CHIP:2Kohm,5%,1/10W,DA, 2007-000671 R9,132 R-CHIP:3.9Kohm,1%,1/10W,D 2007-000707 R110,L5 R-CHIP:300ohm,5%,1/10W,DA 2007-000728 R104 R-CHIP:30Kohm,5%,1/10W,DA 2007-000738 R27,91 R-CHIP:330Kohm,5%,1/10W,D 2007-000757 R300,303 R-CHIP:33ohm,5%,1/10W,DA 2007-000781 R-CHIP:390ohm,5%,1/10W,DA 2007-000822 R-CHIP:39Kohm,5%,1/10W,DA 2007-000830 Samsung Electronics...
  • Page 113 C-CERAMIC,CHIP:100nF,+80- 2203-000192 C178,179,152 C-CERAMIC,CHIP:100nF,+80- 2203-000192 C175,180,236,238,239 C-CERAMIC,CHIP:100nF,+80- 2203-000192 C234,235,103 C-CERAMIC,CHIP:100nF,+80- 2203-000192 C14,15,146,167 C-CERAMIC,CHIP:100pF,5%,5 2203-000239 C200,35-37,237 C-CERAMIC,CHIP:100pF,5%,5 2203-000239 C170,176 C-CERAMIC,CHIP:100pF,5%,5 2203-000239 C151 C-CERAMIC,CHIP:10nF,10%,5 2203-000260 C114,169,214,215 C-CERAMIC,CHIP:120pF,5%,5 2203-000316 C225 C-CERAMIC,CHIP:150pF,5%,5 2203-000361 C7,56,63 C-CERAMIC,CHIP:1nF,5%,50V 2203-000455 C135-137,150,156 C-CERAMIC,CHIP:1nF,5%,50V 2203-000455 C172,173,174,177 C-CERAMIC,CHIP:1nF,5%,50V 2203-000455 Samsung Electronics...
  • Page 114 2402-000173 C13,229 C-AL,SMD:10uF,20%,16V,GP 2402-000176 C25,219 C-TA,CHIP:10uF,20%,10V,- 2404-000283 L1,2,7 INDUCTOR-SMD:390uH,10%,3. 2703-000204 L23,24,L21,R147 CORE-FERRITE BEAD:AB,3.2x 3301-000370 FREQ-ATTENUATOR:5-80MHz,1 4701-001020 TR-SMALL SIGNAL:KSC5019-M 0501-000385 PHOTO-INTERRUPTER:TR,-,- 0604-001006 IC-VOLTAGE COMP.:520,TO-9 1202-000159 CRYSTAL-UNIT:20MHz,50ppm 2801-000199 CRYSTAL-UNIT:32.768KHz,5p 2801-001498 CRYSTAL-UNIT:18.1168MHz,5 2801-003266 CRYSTAL-UNIT:16.5912MHz,5 2801-003267 RESONATOR-CERAMIC:455KHz 2802-000152 OSCILLATOR-CLOCK:52.416MH 2804-001182 OSCILLATOR-CLOCK:49.152MH 2804-001183 Samsung Electronics...
  • Page 115 Electrical Parts List DESCRIPTION CODE REMARK CORE-FERRITE BEAD:AA,3.5x 3301-000292 L4,16 CORE-FERRITE BEAD:ZZ,3.5x 3301-000344 U1-1,U2-1 SOCKET-IC:32P,DIP,SN,2.54 3704-000255 CONNECTOR-FPC/FC/PIC:14P 3708-000158 CONNECTOR-SOCKET:40P,2R,2 3710-000490 CONNECTOR-HEADER:NOWALL,2 3711-001422 CONNECTOR-HEADER:NOWALL,2 3711-002003 CONNECTOR-HEADER:BOX,32P 3711-003136 BATT1 BATTERY-LI:3V,220mAH,BUTT 4301-000108 BATT2 BATTERY-NIH(2ND):4.8V,70m 4302-001005 JG41-10093B Samsung Electronics...
  • Page 116 REF-CHIP,680,5%,1/8W 2007-001121 REF-CHIP,10K,5%,1/8W 2007-000303 R16~R23 REF-CHIP,22K,5%,1/8W 2007-000589 REF-CHIP,200,5%,1/8W 2007-000542 REF-CHIP,150,5%,1/8W 2007-000403 REF-CHIP,300,5%,1/8W 2007-000730 REF-CHIP,2.2K,5%,1/8W 2007-000496 REF-CHIP,150,5%,1/8W 2007-000403 REF-CHIP,10K,5%,1/8W 2007-000303 IC's NIC-MPU,FOR SF600,MASKING JF09-10052A IC-TTL,SOP,14,150MIL 0803-000884 DIODES D1~D8 DIODE-REC,SMD,MMD914T1 0401-000116 LED1 LED,R,CHIP:60MW 0601-000208 LED2~LED9 LED,G,CHIP:60MW 895-190005GA TRANSISTOR TR-NPN,KSC1623,SOT-23,0.2W 0501-000342 Samsung Electronics...
  • Page 117 Electrical Parts List DESCRIPTION CODE REMARK MISCELLANEOUS REF-CHIP,0,5%,1/8W 911-710007CR J5~J17 REF-CHIP,0,5%,1/8W 911-710007CR WIRE,TCWA 3812-000101 JP3-JP11 WIRE,TCWA 3812-000101 OPE PCB JG41-10088A INTERRUPTER,TR 895-610013AA PHOTO.TR 0604-001006 CRESO,7.37M,0.5% 2802-000185 Samsung Electronics...
  • Page 118 R33-36 R-CHIP:4.7Kohm,5%,1/8W,DA 2007-000875 R1,2 R-CHIP:56Kohm,5%,1/8W,DA 2007-001041 R-CHIP:750ohm,5%,1/8W,DA 2007-001159 C7,C8 C-CERAMIC,CHIP:100nF,10% 2203-000208 C1-4 C-CERAMIC,CHIP:820pF,5%,5 2203-003084 L1,L2,R3,R4 CORE-FERRITE BEAD:AB,3.2x 3301-000370 U1,U2 IC-MOTOR DRIVER:PBL3717A 1003-000243 R9,10 R-CARBON:0.5ohm,5%,1/2W,A 2001-000202 C-AL:33uF,20%,50V,GP,TP,6 2401-001197 C-AL:47uF,20%,35V,GP,TP,6 2401-001553 CONNECTOR-HEADER:3WALL,10 3711-000398 CONNECTOR-HEADER:3WALL,4P 3711-000470 CONNECTOR-HEADER:3WALL,6P 3711-000496 CONNECTOR-HEADER:BOX 3711-000760 JG41-10091B Samsung Electronics...
  • Page 119 CON-BOX HEADER,26P,2,2R,S 3711-000778 CON-BOX HEADER,20P,2,2R,S 3711-002001 CON-3WALL HEADER , 15P 3711-000428 C0N-BOX HEADER ,6P 3711-000051 C0N-BOX HEADER,5P 3711-003151 CON-1WALL,20P,1R,2mm,S 3711-001857 CON-NOWALL 70203-0048 TRANSISTORS TR-SMALL SIGNAL 0501-000317 TR-SMALL SIGNAL 0501-000398 MOTHER PCB JG41-10089A RESISTORS R-METAL,10K,1/8W 2004-000222 REF-CR,1.2K,5%,1/4W 2001-000044 R-METAL,2.2K,1/8W 2004-000462 Samsung Electronics...
  • Page 120 REF-CHIP,47K,5%,1/8W 2007-000944 REF-CHIP,47K,5%,1/8W 2007-000944 REF-CHIP,4.7K,5%,1/8W 2007-000875 REF-CHIP,4.7K,5%,1/8W 2007-000875 REF-CHIP,2.4K,5%,1/8W 2007-000513 REF-CHIP,2.4K,5%,1/8W 2007-000513 REF-CHIP,620,5%,1/8W 2007-001094 REF-CHIP,120,5%,1/8W 2007-000346 R24~R27 REF-CHIP,0,5%,1/8W 911-710007CR R31~R34 REF-CHIP,0,5%,1/8W 911-710007CR REF,1,2%,2W 2005-000125 REF,1,2%,2W 2005-000125 REF-CHIP,0,5%,1/8W 911-710007CR R43~R45 REF-CHIP,0,5%,1/8W 911-710007CR R47~R49 REF-CHIP,0,5%,1/8W 911-710007CR IC-LIN,7020,MOTOR DRIVER 1003-000185 Samsung Electronics 8-10...
  • Page 121 2203-000634 CHIP,100N,20%,1H 2203-000192 CHIP,100N,20%,1H 2203-000192 CHIP,100N,20%,1H 2203-000192 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 CERAMIC,22P,5%,1H 2203-000634 8-11 Samsung Electronics...
  • Page 122 2203-000408 C-CHIP,180P,5%,1/10W 2203-000408 C-CHIP,180P,5%,1/10W 2203-000408 C-CHIP,180P,5%,1/10W 2203-000408 C-CHIP,180P,5%,1/10W 2203-000408 C-CHIP,180P,5%,1/10W 2203-000408 C-CHIP,100N,20%,1H 2203-000192 C-CHIP,180P,5%,1/10W 2203-000408 ECP PCB JG41-10094A RESISTORS REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 Samsung Electronics 8-12...
  • Page 123 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,4.7K,5%,1/10W 2007-000872 REF-CHIP,10K,5%1/10W 2007-000300 REF-CHIP,10K,5%1/10W 2007-000300 REF-CHIP,10K,5%1/10W 2007-000300 REF-CHIP,10K,5%1/10W 2007-000300 REF-CHIP,10K,5%1/10W 2007-000300 REF-CHIP,10K,5%1/10W 2007-000300 CHIP,47,5%,1/10W 2007-000947 CHIP,47,5%,1/10W 2007-000947 CHIP,47,5%,1/10W 2007-000947 CHIP,47,5%,1/10W 2007-000947 CHIP,47,5%,1/10W 2007-000947 CHIP,47,5%,1/10W 2007-000947 CHIP,47,5%,1/10W 2007-000947 CHIP,47,5%,1/10W 2007-000947 8-13 Samsung Electronics...
  • Page 124 2007-000872 REF-CHIP,4.7K,5%,1/10W 2007-000872 REF-CHIP,4.7K,5%,1/10W 2007-000872 REF-CHIP,4.7K,5%,1/10W 2007-000872 REF-CHIP,4.7K,5%,1/10W 2007-000872 REF-CHIP,4.7K,5%,1/10W 2007-000872 REF-CHIP,4.7K,5%,1/10W 2007-000872 REF-CHIP,4.7K,5%,1/10W 2007-000872 REF-CHIP,4.7K,5%,1/10W 2007-000872 REF-CHIP,1K,5%,1/10W 2007-000468 REF-CHIP,4.7K,5%,1/10W 2007-000872 REF-CHIP,4.7K,5%,1/10W 2007-000872 IC's IC-TTL 0803-000580 IC-INTERFACE 1205-001051 IC- 74LS245, 0803-001173 MISCELLANEOUS CON-NOWALL,40P,2,2R,ST 3711-003152 CON-MICRO RIBBON,36P,RECEPTABLE 3702-001001 Samsung Electronics 8-14...
  • Page 125 0604-001021 P_EMPTY PHOTO INTERRUPTER 0604-001020 P_EXIT PHOTO INTERRUPTER 0604-001015 PICK_UP PHOTO INTERRUPTER 0604-001022 SMPS POWER UNIT JG44-10054A SPEAKER AUDIO-SPEAKER 3001-000214 TX_MOTOR TX STEPING MOTOR 3101-001007 RX_MOTOR RX STEPING MOTOR 3101-001004 LASER SCAN UNIT JG59-10001A SOLENOID UNIT-SOLENOID JG59-10002A 8-15 Samsung Electronics...
  • Page 126 FUSER JG39-40137A EARTH WIRE MOT GROUND JG39-40142A EARTH WIRE FEED GROUND JG39-40153A EARTH WIRE UPPER EARTH WIRE JG39-40138A POWER WIRE INLET-SMPS JG39-40139A PRINT CABLE JG39-40135A CURL CORD JF39-60001A JF39-60001A LINE CORD 955-316014AACK JF39-50094A POWER CORD DR4SVT-DS2 JF39-40692A Samsung Electronics 8-16...
  • Page 127 SAMHWA 50V 223J TS1H223J SAMHWA MYLAR,100V 223J TY2A223J SAMHWA 50V 223J TS1H223J SAMHWA CERAMIC,1KV 471 CKR3A471K06BS SAMHWA HCYE3A471KB SEMCO ELEC,12.5*30, 105°C SXE35V1000uF SAMYOUNG RX35V1000uF SAMHWA ELEC,10*20 105°C SXE35V330uF SAMYOUNG RX35V330uF SAMHWA CERAMIC,50V 104Z CCYV1H104ZB SEMCO CGF1H104ZFK SAMHWA 8-17 Samsung Electronics...
  • Page 128 1W 220K-J MINI PILKOR ABCO METAL-OXIDE 1W 150K-J MINI PILKOR ABCO FUSIBLE NFR25 270-J PILKOR CARBON 1/4W 100-J ABCO PILKOR FUSIBLE NFR25 390-J PILKOR WIRE WOUND, NON INDYCTIVE 1W 0.42-J MINI HANMI CARBON 1/8W 47K-J ABCO PILKOR Samsung Electronics 8-18...
  • Page 129 REGULATOR, +12V 0.5A KA78M12 REGULATOR, -12V 0.5A KA79M12 SHUNT REG, 40V 0.1A KA431AZ REGULATOR, +5V 1.5A SI-3051N SANKEN DIODES BRIDGE, 600V 3.0A D3SB60 SHINDENGEN RBV406 SANKEN SWITCHING, 75V 0.15A 1N4148 ROHM KOREA 1N4148 UNIZON F.R, 200V 10A D10LC20U SHINDENGEN 8-19 Samsung Electronics...
  • Page 130 TNR1 SURGE ABSSORBER SVC14D471K SAMHA INR14D471K ILJIN TNR2 SURGE ABSSORBER, AC 1KV 0.6A D69ZOV102RA220 MAIDA THERMISTER, 13mm 8ohm 8D-13 KL13L-008 SANGSHIN VARIABLE, 1/2W, 500 B TOP EVNDJAA03B52 MATSUSHITA GF-06P 501 TOCOS CON1 CON-2P, AC INPUT B2PS-VH YUNHO Samsung Electronics 8-20...
  • Page 131 LINE FILTER, UU1116 0.4*40T US40040 SUNGWON CHOCK COIL, 0.8*68T 210uH TO-80-1603 SUNGWON BEAD, 3.5*5 BFS3550AO-R2F SAMHWA BEAD, 3.5*5 BFS3550AO-R2F SAMHWA RELAY, 24VDC 5A KM11-M24F CHUNGWON FUSE-GLASS, 50T050H 250V 5A TRIAD FUSE-GLASS, 50T016H 250V 1.6A TRIAD LFT2 TRANS-POWER EER-28L SUNGWON 8-21 Samsung Electronics...

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