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Ricoh FAX220 Service Manual Download 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].

3. Tighten the lens securing screw.

After finishing the adjustments, switch off the power, take out the adjustment tools, bracket, test lead and the white
pressure plate from the machine. Then reassemble the machine.

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Summary of Contents for FAX220

Page 1: ...RICOH FAX220 240 SERVICE MANUAL Copyright 1992 Ricoh Company Ltd Japan Subject to change...

Page 2: ...n FAX240 11 s Measured using a CCITT 1 test chart Slerexe Letter at 9 600 bps MMR coding with ECM 10 ms line I O rate standard resolution Data Compression Method MH EFC SSC MR MMR FAX240 only SAF Memo...

Page 3: ...Polled reception yes yes Automatic cutter no yes Manual cutter yes no Authorized reception with TSI yes yes Decurler no yes Printing of the TSI on received copies yes yes Communication TTI page heade...

Page 4: ...yes yes 12 key dialpad yes yes Volume control for speaker yes yes Volume control for ringer yes yes Power down function Ring Dial Speech yes yes FAX PHONE switch Auto receive manual receive switch ye...

Page 5: ...ing fax messages 1 3 2 Authorized Reception The machine automatically stores in RAM the TSI or RTI from the terminals programmed in the Quick Dials and Speed Dials once the user sends a document to th...

Page 6: ...automatically 4 Operation Panel Refer to section 1 4 2 5 Printer Cover Cover Release Lever To open the cover push the release lever forward and pull up the cover 6 Copy Tray 7 Document Guide 8 Power S...

Page 7: ...nge the resolution If neither of the Detail or Fine indicators are lit Standard resolution is selected Halftone key and indicator Press this key when you wish to send a photograph Speed Dial key Press...

Page 8: ...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...

Page 9: ...Use to switch the TTI printout on each transmitted page on or off 11 Enter Page Header TTI Use to program the TTI 12 Enter Your Name RTI Use to program the RTI 13 Enter Your Fax Number CSI Use to pro...

Page 10: ...s function If this function is used the RAM will all be cleared The following functions are prepared for service use 40 Factory Adjustment Use to check the ROM version to adjust the tx level and to cl...

Page 11: ...his test the machine automatically goes to the LED test Display Key Display Key Display Key 1 through Keys in the dialpad ONL On Hook Dial CLR Clear SPE Speed Dial FUN Function FIN Detail Fine MLT Mem...

Page 12: ...2100Hz Press the key to go backwards through the sequence After you have finished the test press Stop to go back to step 3 4 2 DTMF Test Press a key on the dialpad 0 9 and to test the DTMF signal Aft...

Page 13: ...service mode see section 2 2 1 2 Press Function enter 43 then press SET 3 The setting of bit switch 0 is displayed To change the setting of a bit press the bit number on the dialpad 0 7 Press or to d...

Page 14: ...e start address then press OK The address field has 5 digits as the first digit is used for bank identification and the following 4 digits are for the actual address Use the bank identification number...

Page 15: ...se in square brackets are for Fine resolution Also if the number of error lines divided by the total number of lines reaches the ratio determined by this bit the machine will send RTN to the other end...

Page 16: ...inal does not match the ID code of this terminal The ID code has to be programmed with function 16 before switching on these bits This feature may not be reliable when communicating with another maker...

Page 17: ...current on the LIU to detect whether the external TAM goes off hook or on hook 1 The German type of TAM interface does not monitor the line current on the LIU because the TAM and the fax are connected...

Page 18: ...1 On Bit 6 Authorized Reception On Off Function 20 1 On Bits 5 through 0 Not used 0039 Exchanger type connected to the machine Bit 2 0 PSTN Bit 2 1 PBX 0300 0302 Line current detection parameters 030...

Page 19: ...on disabled if N FF 0356 International dial tone reset time Time N x 0 16 s 0357 International dial tone continuous tone time Time N x 20 ms 0358 International dial tone permissible dropout time Time...

Page 20: ...3 D French 0386 Redial interval for memory transmission N x 1 min Default 5 minutes 0387 0388 Intercity access code for France 16 D 0386 FF H 0387 16 BCD 039A Ringing time in Auto mode Time N s The v...

Page 21: ...rminals programmed in the Quick Speed dials and to the forwarding terminal 5 bytes x 51 destinations 0 No history 1 2400 bps 2 4800 bps 3 7200 bps 4 9600 bps 5101 Number of characters in the RTI 14 H...

Page 22: ...tches and data ON OFF Bit 2 of 0009 H Mode Bit 1 of 0009 H Start Date and Time 20A1 20A6 H End Date and Time 20A7 20AC H OFF 0 ON 1 NOW 0 Current date and time is stored End time and date is stored he...

Page 23: ...RTI TSI or CSI ASCII 25 Communication mode Bit 7 Resolution step down 1 Yes Bit 6 Reduction 1 Yes Bit 5 0 Standard 0 Fine 1 Detail 1 Not used 4 0 1 0 1 Bit 3 Forwarding 1 On Bit 2 Memory tx rx 1 Yes...

Page 24: ...or page 2 BCD 32 Error page 3 BCD 33 Error page 4 BCD 34 Error page 5 BCD 35 Error code 1 High BCD 36 Error code 1 Low BCD 37 Error code 2 High BCD 38 Error code 2 Low BCD 39 Error code 3 High BCD 40...

Page 25: ...at the correct setting for the ma chine Also note that the LIU for type 2 has a dummy jumper on pin 4 of TB3 this is a spare jumper for use if you wish to install the LIU board in a type 3 machine 1 T...

Page 26: ...bit on the SBU is used as this sensor SB 2 Scan Line Sensor Detects when the top of a page is at the scan line position The 4th bit on the SBU is used as this sensor SB 4 Paper End Sensor Detects whet...

Page 27: ...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 4 1 COVERS 4 1 1...

Page 28: ...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...

Page 29: ...ve 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...

Page 30: ...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 Remove...

Page 31: ...n 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 b...

Page 32: ...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 C A...

Page 33: ...urler bracket G and platen roller F 2 E rings 2 bushings 1 spring Reassembly Note Be careful not to assemble the gears the wrong way round The left platen roller bushing is smaller than right bushing...

Page 34: ...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 A B C 3 2...

Page 35: ...der 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 Remove the HSB A 3 co...

Page 36: ...4 4 4 OPU 1 Remove the operation panel cover see section 4 1 1 2 Remove the OPU A A 4 10...

Page 37: ...features scanning document and detecting sensor actuator movement the scanner needs ex act adjustment Refer to Appendix D for more details on the scanner sensor mechanism This section is divided into...

Page 38: ...from the FDU CN7 to CN2 on the test PCB then connect the harness from the test PCB to the SBU 1 The dents on the bracket must be fit to the edge of scanner base Otherwise the pins of the HIC might cr...

Page 39: ...he vertical scan line position and moire should appear at C If this waveform cannot be seen on the oscilloscope screen loosen the SBU securing screws and adjust the SBU position until this waveform ap...

Page 40: ...forms shown below 4 Enlarge the shaded part of the waveform above by changing the TIME scale to 50 s div or 20 s div The scan start line appears as the first sharp dropout from the left of the XVIDEO...

Page 41: ...TVLD 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 After adjustment be sure that the scan start line is with...

Page 42: ...l shows one of the waveforms shown below At A and B on the XVIDEO waveform one two or three dropouts are seen now Enlarge areas A and B by changing the time scale to 50 s div or 20 s div The ideal wav...

Page 43: ...de 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 s If the waveform has three dropouts at the scan start side move up th...

Page 44: ...distance between peaks has to be within 50 s 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 The distance between...

Page 45: ...ck the lens using a small screwdriver so that the amplitude of each moire A becomes more than 20 of the white level output B 3 Tighten the lens securing screw After finishing the adjustments switch of...

Page 46: ...ve parts Replace the SBU or FDU Vertical black lines on the copy Clean the scanner optics and LED array soft cloth Replace the SBU if there are any sharp peaks or dropouts in the CCD waveform Uneven d...

Page 47: ...er closed properly 2 Was the document placed in the feeder correctly Was the document of a recommended type 3 Is the document fed into scanner after you place it in the ADF Finished Go to test 4 4 Doe...

Page 48: ...document feed path Check the scanner drive mechanism 4 Does the scan line sensor actuator move correctly Go to test 5 Reassemble or replace the actuator 5 Do the two red LEDs on the left hand side of...

Page 49: ...itch and or the actuator mechanism 6 Are the connections between the FDU LIU and telephone line loose Connect the cables properly Go to step 7 7 Does the FCE send the POWON signal to the FDU when a ri...

Page 50: ...initialize itself Go to step 7 Replace the cutter unit 7 Are the connections between the FDU and the paper end sensor loose Connect the cables properly Go to step 8 8 Does the Replace Paper indica tor...

Page 51: ...line 0 05 Unsuccessful after modem training at 2400 bps Check the line connection Check the FCE LIU FDU connectors Try adjusting the tx level use NCU parameter 10 Replace the FCE FDU or LIU Check for...

Page 52: ...ective or may have disconnected 0 22 The signal from the other end was interrupted for more than 0 2 s Check the line connection Check the FCE FDU LIU connectors Replace the FCE LIU or FDU Defective r...

Page 53: ...or without halftone Change the FCE 4 01 Line current was cut Check the line connector Check the connection between the FDU and the LIU Check for line problems Replace the FDU the FCE or the LIU 4 02 T...

Page 54: ...ding decoding error G3 ECM Defective FCE Defective remote terminal 6 08 PIP PIN was received in reply to PPS NULL G3 ECM The other end pressed Stop during communication The other terminal may be defec...

Page 55: ...3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 35 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 10 7 6 5 4...

Page 56: ...0 28 MONVOL to AVM IC 0 29 CUT0 Cutter control 0 30 CUT1 Cutter control 0 31 LEDON LED array control 0 32 POWON 24VSW control 0 33 CK24V T H check 5 34 SB10 SB10 Cover open 0 35 SB7 SB7 Cutter positio...

Page 57: ...al hook SW detect 5 4 HOOK Current detect 5 5 RI Ringing detect 5 6 COM1 Ground 0 7 ONHK On hook relay control 0 8 LIUSCK Serial clock and rest C 9 SOD Sereal output data C 10 SID2 Serial input data C...

Page 58: ...y LIU Speaker Test Points CN5 CN7 CN15 CN6 CN11 CN12 CN13 CN14 CN9 CN8 CN10 CN22 CN16 1 2 3 1 2 5 4 1 2 3 TXMA TXMAB TXMB TXMBB 24V 24V RXMA RXMAB RXMB RXMBB 24V 24V XVIDEO COM2 OPHTG OPH1 OPHRES 5V 2...

Page 59: ...24V 5 6 2 5 FDU FCE CN1 See FCE CN1 section 6 1 1 6 2 6 FDU Paper End Sensor SB 4 CN11 No Name Function V 1 SB4 Signal from sensor X 2 COM1 Ground 0 3 5V DC power 5 6 2 7 FDU Paper Jam Sensor SB 5 CN1...

Page 60: ...V 1 24V DC power 24 2 LEDON LED array drive 14 3 5V DC power 5 4 COM1 Ground 0 6 2 13 FDU LIU CN22 No Name Function V 1 TXOUT Transmit data 0 2 RXIN Receive data 0 3 TONE Tone input 0 4 MONIT Monitor...

Page 61: ...3 4 3 1 2 4 1 2 3 LSWS0 LSWS1 LSWS2 LSWC0 LSWS4 LSWC2 LSWC1 LSWS3 CN3 CN6 CN5 CN8 INTHK COM1 6 5 4 3 2 1 CN1 CN2 1 2 3 4 SPL MICL SPH MICH LINE1 RING1 TEL1 RING2 TEL2 LINE2 CN1 CN2 Line Tel 1 2 3 4 5...

Page 62: ...n to the handset 0 4 RING2 Connection to the ring detection circuit L 5 TEL2 Connection to the handset 0 6 LINE2 Connection from the line L 6 3 6 LIU HSB CN8 No Name Function V 1 INTHK Handset off hoo...

Page 63: ...ed down to connect the line to the external telephone and the ring detection circuit When the internal handset is picked up the hook switch goes up to connect the line to the dialer and speech circuit...

Page 64: ...to connect the line to the dialer and speech circuit The digits dialed at the dialpad are directly informed to the dialer and the dialer dials the number and passes them to the FCE to indicate the dia...

Page 65: ...er checks the setting of this switch every time the FCE detects off hook then di als the number using the indicated method 2 5 PSTN Access from behind the PBX When the machine is behind a PBX the user...

Page 66: ...the RY1 relay to connect the line to the speech circuit If CNG is not detected and the user does not respond to the call within 30 s the machine sends CED DIS NSF before disconnecting the line 3 4 TA...

Page 67: ...the FDU to 5VBAT so that it can back up these ICs 3 LIU Back up When the power is not supplied from the PSU the internal telephone unit is still active When the handset is picked up or the On Hook Dia...

Page 68: ...the FAX240 only There is an OTP One Time Programmable ROM in an SOP type package 1 2 FDU Facsimile Driver Unit This driver unit interfaces with the peripherals It contains Tx Rx and cutter motor driv...

Page 69: ...s a CCD which scans the document and detects light path blockage by the document scan line sensor actuators 1 6 OPU Operation Panel Unit This unit receives all keypad input information and indicates i...

Page 70: ...used for SAF SRAM KFCP SRAM FDU LIU SBU Analog V P Digital V P DCR EIO2 DSP Modem AFE HIC2 FCE LINE Line Buffer Attenuation Amplification Filtering FIFO Filtering SAF Memory LIU KFCP SRAM SBU Analog V...

Page 71: ...RAM FCE ECM Frame Breaking LIU LINE Filtering DSP Modem AFE Attenuation Amplification ECM Memory DCR Line Buffer Reconstruction P S Line Buffer Thermal Head Printing Back up for Substitute Reception S...

Page 72: ...LEDs passes through the lens to the right hand side of the CCD where there are 112 ele ments specially provided to detect this light the 4th bit is allocated to the scan line sensor SB 2 and the 58th...

Page 73: ...ing the document the LED array flashes every 10 ms As the trailing edge of the page leaves the scan line sensor the light path through that sensor becomes unblocked again However if there are some pag...

Page 74: ...However the R2 roller turns a bit faster than the feed roller After the trailing edge passes the feed roller only the R2 roller feeds the document So the document is fed into scanner slowly during the...

Page 75: ...s finished the machine cuts the paper then reverses the Rx motor to feed back the paper to the printing position and to move the decurler bracket down to the standby position 2 2 2 Shuttle Cutter The...

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