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Ricoh FAX220 Service Manual

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RICOH FAX220/240
SERVICE MANUAL
Copyright © 1992, Ricoh Company Ltd., Japan
Subject to change

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Summary of Contents for Ricoh FAX220

  • Page 1 RICOH FAX220/240 SERVICE MANUAL Copyright © 1992, Ricoh Company Ltd., Japan Subject to change...

  • Page 2: General Specifications

    Fine: 8 x 15.4 dots/mm Transmission Time FAX220 - 15 s (Measured using a CCITT #1 test chart, Slerexe Letter, at 9,600 bps, MH coding with EFC, 10 ms/line I/O rate, standard resolution) FAX240 - 11 s (Measured using a CCITT #1 test chart,...

  • Page 3: Features List

    1-2. Features LIst Features FAX220 FAX240 Transmission Automatic transmission Manual transmission ADF capacity Automatic Contrast Control Polling transmission Send later Dial via dialpad Quick dial (one touch) Speed dial (two touch) Automatic redial Manual redial Label programming for Quick/Speed dials Page indicator CSI + P.1...
  • Page 4 Features FAX220 FAX240 Rejected Call Report in Authorized Reception Stored document list Power failure report SAF features (9 pages memory) SAF capacity in kbytes 128 (256 if ECM off) Memory transmission Serial broadcasting Substitute reception Forwarding (1 number) File confirmation/clearance...
  • Page 5 1-3. Detailed Features Description 1-3-1. Auto Select Mode There are three reception modes, AUTO, TAM and FAX, one of which can be programmed in the Auto Select key on the operation panel using function 04 ‘‘SET FAX SWITCH’’. AUTO mode allows the machine to capture the line without any rings being heard by the users. Then, the machine starts to detect CNG for about 30 s while sending back ring-back tone or AVM (Artificial Voice Message) in one or two languages selected by the user.
  • Page 6 1-4. Exterior 1-4-1. Component Layout 1. Handset Cradle This contains a hook switch and a ringer. 2. Telephone Handset This contains a mi- crophone and an earphone. 3. ADF Up to 5 pages can be fed automatically. 4. Operation Panel Refer to section 1-4- 5.
  • Page 7 1-4-2. Operation Panel Power RICOH FAX 240 Memory Receive Speed Dial File DIAL NUMBER 11:22AM Check Display THEN INSERT DOCUMENT Replace Pause Paper Stop Auto Select Redial Function Copy Clear Detail Fine Start OPER < > Hold Halftone On Hook Dial...
  • Page 8 Name Function Memory key (FAX240 only) Press to use memory transmission. Stop key Press to stop the machine and return it to standby mode. Copy key Press to copy the document now in the feeder. Start key Press to start sending or receiving a fax message. The keys with an asterisk (*) can be used for making a telephone call if the main power is switched off.

  • Page 9: Programming, Testing, And Printing Reports

    2. PROGRAMMING, TESTING, AND PRINTING REPORTS 2-1. USER LEVEL PROGRAMMING Function List Function Brief Explanation Quick Dial Programming Use to program a telephone number and a label in each Quick Dial key. Speed Dial Programming Use to program a telephone number and a label in each Speed Dial code.

  • Page 10: Entering Service Mode

    2-2. SERVICE LEVEL OPERATION 2-2-1. Entering and Exiting Service Mode ENTERING SERVICE MODE Press Start → Stop → Start → Stop → Start sequentially within 5 seconds. After entering service mode, the following service functions are available. Function Brief Explanation Functions 30 to 38 are mainly prepared for factory use.
  • Page 11 2-2-2. RAM Test (Function 30) 1. Enter the service mode (see section 2-2-1). 2. Press Function, enter 30, then press SET. 3. The machine starts to check the SRAM and the two DRAMs without clearing any RAM data stored. If the RAM test succeeded, the machine prints ‘‘RAM TEST OK’’, and goes to the Key Test. If the RAM test failed, the machine displays ‘‘RAM ERROR AT ##AAAA’’...
  • Page 12 2-2-6. Speaker Test (Function 34) 1. Enter the service mode (see section 2-2-1). 2. Press Function, enter 34, then press SET. 3. The machine emits a tone from the speaker until OK or ERROR is pressed. If OK is pressed, the machine prints ‘‘VOL TEST OK’’ and goes to the Printer Test. If ERROR is pressed, the machine prints ‘‘VOL TEST FAILED’’...
  • Page 13 2-2-11. Factory Adjustment (Function 40) 1. Enter the service mode (see section 2-2-1). 2. Press Function, enter 40, then press SET. The upper line on the LCD shows the ROM version ‘‘VER x.xx dd.mm.yy c’’ (x.xx = version, dd.mm.yy = date, c = country setting).
  • Page 14 2-2-14. Display and Rewrite ROM/RAM Data (Function 91) 1. Enter the service mode (see section 2-2-1). 2. Press Function, enter 91, then press SET. 3. The upper line on the LCD shows ‘‘ADD: aaaa VAL: ddd/hh’’ (aaaa = address, ddd = decimal value of the data, and hh = hexadecimal value of the data).

  • Page 15: Service Tables

    3. SERVICE TABLES 3-1. BIT SWITCHES WARNING Do not adjust a bit switch that is described as "Not used", as this may cause the machine to malfunction or to operate in a manner that is not accepted by local regulations. Bit Switch 0 FUNCTION SETTINGS...
  • Page 16 Bit Switch 1 FUNCTION SETTINGS COMMENTS Reconstruction time for 0: 6 seconds When the sending terminal is controlled by a the first line 1: 10 seconds computer, there may be a delay in receiving page data after the local machine accepts set-up data and sends CFR.
  • Page 17 Bit Switch 2 FUNCTION SETTINGS COMMENTS Country code Set the country code after clearing the RAM. Bit 4 3 2 1 0 Country 1 0 0 0 1 USA 1 0 1 0 0 Hong Kong 1 0 1 0 1 Australia 1 0 1 1 0 New Zealand 1 0 1 1 1 Israel 1 1 0 0 0 Thailand...

  • Page 18: Useful Ram Addresses

    3-2. USEFUL RAM ADDRESSES In the equations that occur in the following tables, N represents the decimal value stored in the RAM address. WARNING Changing any RAM data that are not listed in this table may cause the machine to malfunction. 3-2-1.
  • Page 19 Address (Hex) Function 0330 PBX dial tone permissible dropout time [Time = N x 20 (ms)] 0331 PBX pause time [Time = N x 0.16 (s)] 0332 PBX ringback tone detection time [Time = N x 20 (ms), detection disabled if N = FF] Modem data for PBX busy tone frequency range 0333 - 033E Caution: Do not adjust.
  • Page 20 Address (Hex) Function 0377 - 037B: Ringing signal detection parameters (Use function 98 to change) NCU Parameter 00: Acceptable ringing signal frequency, upper limit 0377 [Frequency = 1/(N x 10 ) (Hz)] NCU parameter 01: Acceptable ringing signal frequency, lower limit 0378 [Frequency = 1/(N x 10 ) (Hz)]...
  • Page 21 Address (Hex) Function 20AA Forwarding end date and time (BCD) 20AB Forwarding end date and time Month (BCD) 20AC Forwarding end date and time Year (BCD) 20AD - 226E TCR generation area (30 bytes x 15 communications) 2272 - 2433 Service report and error report generation area (45 bytes x 10 communications) 2438 - 24F7 Error code memory (up to 32 codes x 6 bytes)
  • Page 22 Address (Hex) Function C01A Hour (Tens digit) (ASCII) C01B Hour (Units digit) (ASCII) C01C A colon ‘‘:’’ (ASCII) C01D Minute (Tens digit) (ASCII) C01E Minute (Units digit) (ASCII) C01F A blank space ‘‘ ’’ (ASCII) C020 Suffix (ASCII) C021 Machine code 13 (H) - FAX 220/240 Notes: 1.
  • Page 23 3-2-2. Format of the TCR and Transmission Report Generation Areas The TCR and the Transmission Report are generated in addresses 20AD - 226E (H). The record of each communi- cation is stored in blocks of 30 bytes as explained in the following table. Byte No.
  • Page 24 3-2-3. Format of the Service Report and Error Report Generation Area The Service Report and the Error Report are generated in addresses 2272 - 2433 (H). The record of each error communication is stored in blocks of 45 bytes as explained in the following table. There can be up to 10 records. Byte No.
  • Page 25 3-3. JUMPERS 1 TB3 The jumper wires are set as shown below in the factory for each version. WARNING: Service parts for types 1, 4, and 6 are set to type 6, and service parts for types 2 and 3 are set to type 2. When installing a new LIU, make sure that it is at the correct setting for the ma- chine.
  • Page 26 3-4. VARIABLE RESISTORS AND SWITCHES Address Function Ringer volume adjustment (user adjustable) Speaker volume adjustment (user adjustable) DTMF signal Tx level adjustment GS/FS select switch (not used) A thermostat; this switches the power off automatically when the temperature goes higher S001 than 95 ±...

  • Page 27: Removal And Adjustment

    4. REMOVAL AND ADJUSTMENT CAUTION 1.Unplug the machine from the power outlet before removing any of the covers. 2. The danger of explosion exists if the lithium battery on the FDU is incorrectly replaced. Replace only with the same or an equivalent type recommended by the manufacturer. Discard used batteries in accordance with the manufacturer’s instructions.
  • Page 28 4-1-2. Paper Holder and Scanner Cover 1. Open the printer cover. 2. Remove the paper holder [A] (4 screws, 1 connector). 3. Remove the operation panel assembly (see section 4-1-1). 4. Remove the scanner cover [B] with a screwdriver as shown below (2 screws).
  • Page 29 4-1-3. Thermal Head and Printer Cover 1. Open the printer cover. 2. Remove the thermal head cover [A] (4 screws). 3. Remove the thermal head [B] and the spring plate [C] (2 connectors, 2 springs, 2 screws). Reassembly Note • The dents on the thermal head bracket must fit into the slots on the thermal head. 4.
  • Page 30 4-2. SCANNER 4-2-1. Separation Rubber Plate 1. Remove the operation panel assembly (see section 4-1-1). 2. Remove the rubber plate [A]. 4-2-2. LED Array 1. Remove the operation panel assembly, the paper holder and the scanner cover (see section 4-1). 2.
  • Page 31 4-2-3. Feed Roller 1. Remove the operation panel assembly, the paper holder and the scanner cover (see section 4-1). 2. Remove the metal bracket [A] (1 screw). 3. Remove the feed roller [B]. Note for Reassembly • Pin [C] on the document sensor actuator must be under the feed roller shaft.
  • Page 32 4-3-1. Rear Cover, Cutter Unit (FAX240 only), and Platen Roller 1. Remove the rear cover [A] (2 screws). 2. Remove the paper guide bracket [B] (FAX220), or the paper holder and the cutter unit [C] (FAX240) (4 screws, 2 connectors).
  • Page 33 4. Remove the mono-chassis [D] (2 screws, 1 ground wire). 5. Remove two gears [E] (1 E-ring). 6. FAX220: Remove the platen roller [F] (2 E-rings, 2 bushings). FAX240: Remove the decurler bracket [G] and platen roller [F] (2 E-rings, 2 bushings, 1 spring).
  • Page 34 4-4. PCBs 4-4-1. FCE, FDU, and PSU 1. Remove the paper holder (see section 4-1-2). 2. Remove the FCE [A] (3 connectors). 3. Remove the FDU [B] (9 connectors). 4. Remove the rear cover (2 screws). 5. Remove the PSU [C] (2 connectors).
  • Page 35 4-4-2. LIU 1. Remove the paper holder and the scanner cover (see section 4-1-2). 2. Remove the LIU [A] (2 screws, 6 connectors). 4-4-3. HSB 1. Remove the paper holder (see section 4-1). 2. Remove the cradle unit as shown below. 3.
  • Page 36 4-4-4. OPU 1. Remove the operation panel cover (see section 4-1-1). 2. Remove the OPU [A]. 4-10...
  • Page 37 4-5. SBU REPLACEMENT AND SCANNER/SENSOR ADJUSTMENT 4-5-1. SBU Adjustment Tools 1. Adjustment Kit (P/No. H0809600) 2. Test PCB (P/No. H0939650) Additionally, the test chart which is included in the adjustment kit is available as part number H0809602. 4-5-2. SBU Replacement 1.
  • Page 38 1. Preparation 1. Install a new SBU in the machine. (Do not connect the harness to the FDU.) 2. Clamp the bracket to the scanner base. Set the left side of the bracket first as shown below. Notes: 1. The dents on the bracket must be fit to the edge of scanner base.
  • Page 39 1. Preparation 4. Connect the test pins to the oscilloscope as follows: Pin 1 (DTVLD) - Channel 1 (CH1) on the oscilloscope Pin 2 (COM2) - Ground Pin 3 (XVIDEO) - Channel 2 (CH2) on the oscilloscope 5. Attach the test chart to the machine. 6.
  • Page 40 2. Horizontal Scan Line Adjustment 1. Set up the oscilloscope as follows: CH1 (DTVLD) - 5 V/div. CH2 (XVIDEO) - 0.2 V/div. TIME - 1 ms/div. Use ALT mode to display CH1 and CH2 at the same time. 2. Loosen the SBU securing screws. 3.
  • Page 41 2. Horizontal Scan Line Adjustment 5. Adjust the horizontal scan line position as shown below. If the scan start line is to the left of the rising edge of the DTVLD signal, move the SBU to the left. If the scan start line is to the right of the rising edge of the DTVLD signal, move the SBU to the right. 6.
  • Page 42 3. Vertical Scan Line Adjustment 1. Set up the oscilloscope as follows: CH1 (DTVLD) - 5 V/div. CH2 (XVIDEO) - 0.2 V/div., not inverted TIME - 1 ms/div. Use ALT mode to display CH1 and CH2 at the same time. 2.
  • Page 43 3. Vertical Scan Line Adjustment 3. Adjustment at the scan start side. If the waveform has two dropouts at the scan start side, move down the left side of the SBU to make the dis- tance between peaks narrower. The distance between peaks has to be within 50 µs. If the waveform has three dropouts at the scan start side, move up the left side of the SBU to make the dis- tance between peaks narrower.
  • Page 44 3. Vertical Scan Line Adjustment 4. Adjustment at the scan end side. If the waveform has two dropouts at the scan end side, move down the right side of the SBU to make the dis- tance between peaks narrower. The distance between peaks has to be within 50 µs. If the waveform has three dropouts at the scan end side, move up the right side of the SBU to make the dis- tance between peaks narrower.
  • Page 45 4. Focusing 1. Loosen the lens securing screw [A] and pull out the lens 1 or 2 mm from the scanner base surface as shown on the right. 2. Move back the lens using a small (-) screwdriver so that the amplitude of each moire [A] becomes more than 20% of the white level output [B].

  • Page 46: Troubleshooting

    5. TROUBLESHOOTING 5-1. COPY QUALITY PROBLEMS 5-1-1. Received Copies If there is no fault in the receiving terminal or on the line, but the copy quality is bad, do the following: • Check that the thermal head, platen roller and spring plate assembly are assembled completely. •...

  • Page 47: Machine Operation

    5-1-3. Effects of Line Problems on Copy Quality Missing lines; shrinkage in the sub scan direction - Original - - Bad Copy Sample - Cut off - Bad Copy Sample - Some lines may be missing just before the cut off. 5-2.
  • Page 48 Test Action if Yes Action if No 8. Is the scan start line of the SBU adjusted properly? Go to step 9. Adjust the scan start position. 9. Check the connection to the tx motor. Does the Replace the FCE. Replace the FDU.
  • Page 49 5-2-2. Printer 1. Non Feed Symptom: Non feed Check Action if Yes Action if No 1. Is the printer jammed with de- Clear the debris. Go to step 2. bris? 2. Is the printer cover closed prop- Go to step 3. Close the cover.
  • Page 50 2. Jam Symptom: Jam Check Action if Yes Action if No 1. Is the printer jammed with de- Clear the debris. Go to step 2. bris? 2. Is the printer jam sensor good? Go to step 5. Go to step 3. 3.

  • Page 51: Error Codes

    5-3. ERROR CODES If an error code occurs, retry the communication. If the same problem occurs, try to fix the problem as suggested below. Note that error codes 4-00, 01, 02, and 10 only appear in the error code display and on the service report. Code Meaning Suggested Cause/Action...
  • Page 52 Code Meaning Suggested Cause/Action 0-10 The other end did not send a Check the line connection. reply to EOP, EOM or MPS Check the FCE - FDU - LIU connection. Replace the FCE, LIU or FDU. Try adjusting the tx level (use NCU parameter 10). The other end may have a defective modem/NCU/FCU;...
  • Page 53 Code Meaning Suggested Cause/Action 1-23 Cutter jam Clear any debris from the sensors and the paper path. Clean the cutter sensor. 1-24 Cutter failed to initialize Check the cutter mechanism. Check the connections from the FDU to the cutter motor and cutter sensors.
  • Page 54 Code Meaning Suggested Cause/Action 6-05 Facsimile data frame not received Check the line connection. within 18 s of CFR, but there was Check the connections from the FCE, FDU to the LIU. no line fail (G3 ECM) Check for a bad line or defective remote terminal. Replace the FCE or LIU.

  • Page 55: Electrical Data

    6. ELECTRICAL DATA 6-1. CONNECTION FROM FCE COM1 THSEN STB3 STB2 COM1 STB1 STB0 AVXIN PRLAT COM2 PRDT SENS PRCLK XVIDEO N.C. RESET CSRAM0 CSRAM1 VSEL0 VSEL1 DCCLP PHRES COM1 MSCK MSOD AVMEOS SID1 AVMST SCK1 MONON TONSEL MONVOL CUT0 CUT1 LEDON POWON...
  • Page 56 6-1-1. FCE - FDU Name Function DDSW N.C. in FDU Name Function SWC1 N.C. in FDU N.C. No connection ADSEL SB4/SB5 exchange N.C. No connection control N.C. No connection Battery Power N.C. No connection Power COM1 Digital ground COM1 Digital ground (N.C. in Transmit data FDU) Receive data...
  • Page 57 6-1-4. FCE - LIU Name Function N.C. No connection OH relay control INTHK Internal hook SW detect HOOK Current detect Ringing detect COM1 Ground ONHK On hook relay control LIUSCK Serial clock and rest Sereal output data SID2 Serial input data Note: "V"...
  • Page 58 6-2. CONNECTION FROM FDU +24V +24V RXMA COM3 Rx Motor RXMAB COM3 RXMB RXMBB XVIDEO COM2 +24V OPHTG +24V OPH1 OPHRES Tx Motor TXMA +24V TXMAB TXMB XVIDEO TXMBB CN15 Test Points +24V COM2 +24V COM3 COM3 +24VSW +24V +24VSW LEDON Array CN10...
  • Page 59 6-2-1. FDU - PSU 6-2-6. FDU - Paper End Sensor (SB-4) CN11 Name Function Name Function +24V DC power Signal from sensor +24V DC power COM1 Ground COM3 Ground for +24V DC power COM3 Ground for +24V 6-2-7. FDU - Paper Jam Sensor (SB-5) 6-2-2.
  • Page 60 6-2-11. FDU - Tx Motor Name Function TXMA Tx motor phase A drive TXMAB Tx motor phase A drive TXMB Tx motor phase B drive TXMBB Tx motor phase B drive, +24V +24V DC power +24V +24V DC power 6-2-12. FDU - LED Array CN10 Name Function...
  • Page 61 6-3. CONNECTION FROM LIU LSWS0 LSWS1 LSWS2 LSWC0 LSWS4 LSWC2 LSWC1 Handset LSWS3 MICL MICH SHUNT LINE1 Line RING1 TEL1 GSTART RING2 TEL2 SHUNT LINE2 N.C. INTHK COM1 N.C. GSTART...
  • Page 62 6-3-1. LIU-Line 6-3-7. LIU - OPU Dialpad Name Function Name Function SHUNT Shunt signal 0(L) LSWS0 Key input External phone tip LSWS1 Key input Phone line tip LSWS2 Key input Phone line ring LSWC0 Common signal to the 0 - 4 dialpad Extermal phone ring LSWS4...

  • Page 63: Appendix A. Line Interface

    APPENDIX A. LINE INTERFACE 1. Overall LIU Description LIU Block Diagram Line Transformer Speaker Volume High Impedance Transformer FCE/ Current Filter Speech Line Handset DI Relay Sensor Protection Circuit RY1 Relay RY2 Relay Dialer DC/DC Photocouplers Hook Ringing Switch External Detection Telephone The LIU (Line Interface Unit) has all the telephone line interface functions and contains a telephone unit which is...

  • Page 64: Making A Telephone Call

    2. Making a Telephone Call 2-1. Manual Dialing from the External Telephone In standby mode, the line is connected to the external telephone. Then the user can dial from the external handset. If the user presses Start to send or receive a fax message, the RY1 relay switches up to connect the line to the mo- dem.
  • Page 65 DC Power supplied from LINE Handset The telephone features (di- aling, voice communica- VCC-1 PHONE-A/B tion) can also be used 12 Keys Speech when the machine is Dialpad Circuit Dialer switched off. Pulse/Tone When the handset goes Other Keys off-hook or the On Hook To/From the Line Dial key is pressed, the di-...

  • Page 66: Receiving A Telephone Call

    3. Receiving a Telephone Call LIU Block Diagram Line Transformer Speaker Volume High Impedance Transformer FCE/ Current Filter Speech Line Handset DI Relay Sensor Protection Circuit RY1 Relay RY2 Relay Dialer DC/DC Photocouplers Hook Ringing External Switch Detection Telephone 3-1. Manual Receive Mode When the user picks up the handset, the Hook Switch goes up to connect the line to the speech circuit for voice conversation.

  • Page 67: Appendix B. Power Distribution

    APPENDIX B. POWER DISTRIBUTION 1. PSU/FDU Sensors +5V and/or -5V The PSU regulates the 120 +24V or +24VSW or 220 to 240 Vac input to +24V generate +24 Vdc. The +24Vdc is then supplied to 120/220-240 Vac the secondary power sup- +24V ply circuit on the FDU to generate ±...

  • Page 68: Appendix C. Electrical Component Description/Data Flow

    APPENDIX C. ELECTRICAL COMPONENT DESCRIPTION/DATA FLOW 1. PCBs This section explains the functions of the PCBs and their components. Scanner and Printer Line Drive Conponents and Sensors Handset CONTROL SIGNALS Speaker Thermal Voice HIC2 Head Processor KFCP Video Processor DATA AND ADDRESS BUS FAX240 only SRAM DRAM...
  • Page 69 1-3. LIU (Line Interface Unit) This unit performs all interface functions to the telephone line and contains an internal telephone unit. Refer to Ap- pendix A ‘‘Line Interface’’ for details. 1-4. PSU (Power Supply Unit) This unit regulates the 120/220-240 V ac input and generates +24V for the FDU and thermal head. The power cord and the main switch are separate from the PSU assembly and are fixed to the body frame.
  • Page 70 2-1-1. Direct Transmission (non ECM) 2-1-2. Direct Transmission (ECM) Analog V. P. Analog V. P. KFCP KFCP Digital V. P. Digital V. P. SRAM SRAM Line Buffer Line Buffer Compression EIO2 EIO2 SAF Memory SAF Memory SRAM ECM Memory FIFO ECM Framing DSP (Modem) DSP (Modem)
  • Page 71 2-2. Reception FAX240 only Data/Address Bus AVM ROM SRAM Voice HIC2 (Modem) Processor Line FIFO Buffer 2-2-1. Non ECM Reception 2-2-2. ECM Reception LINE LINE Filtering Filtering HIC2 HIC2 Filtering Filtering Attenuation/Amplification Attenuation/Amplification DSP (Modem) DSP (Modem) Demodulation Demodulation ECM Memory ECM Memory Back-up for Substitute Reception Back-up for Substitute Reception...

  • Page 72: Appendix D. Mechanical Description

    APPENDIX D. MECHANICAL DESCRIPTION 1. ADF/Scanner The machine has two significantly different points in the ADF/scanner mechanism from older models. The first point is the integrated scanner and sensor mechanism, and the second point is the simplified ADF mechanism. 1-1. Integrated Scanner/Sensor Mechanism The document sensor (SB- 1) and scan line sensor (SB- 2) are integrated into the...
  • Page 73 When the document reaches the scan line sensor, the actuator blocks the light path through that sensor. Then prefeed stops to prepare for scanning. The XVIDEO output while the machine is scanning the document is shown on the right. While scanning the document, the LED array flashes every 10 ms.
  • Page 74 2. Printer The printer mechanism for FAX220 is different from the FAX240. Only the FAX240 has a cutter and decurler unit. 2-1. FAX220 (Manual Cutter Models) The printer is very simple. After printing has finished, the machine feeds the paper 22 mm to the cutting position. So...
  • Page 75 2-2. FAX240 (with Shuttle Cutter and Decurler) Decurler Cover 2-2-1. Decurler Thermal Head The decurler unit consists of the decurler cover, decurler bracket and the decurler spring on the platen roller shaft. Paper Roll In standby mode, the decurler bracket is Platen Roller down at the standby position.

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