Download
Share
Print this page
Ricoh Multi-Bypass Service Manual
  1. Manuals
  2. Brands
  3. Ricoh Manuals
  4. Printer Accessories
  5. Multi-Bypass
  6. Service manual
Ricoh Multi-Bypass Service Manual

Ricoh Multi-Bypass Service Manual

Hide thumbs

Advertisement

Quick Links

Download this manual
Multi-Bypass
SER VICE
MANUAL
Multi-Bypass S/M (MCA)

Advertisement

loading
Need help?

Need help?

Do you have a question about the Multi-Bypass and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Ricoh Multi-Bypass

Summary of Contents for Ricoh Multi-Bypass

  • Page 1 Multi-Bypass SER VICE MANUAL Multi-Bypass S/M (MCA)

  • Page 2: Table Of Contents

    CONTENTS THEORY AND CONSTRUCTION SECTION 1-1 Specifications 1-1-1 Specifications ................1-1-1 1-2 Mechanical Construction 1-2-1 Part names and their functions ............ 1-2-1 1-2-2 Machine cross section ..............1-2-2 1-2-3 Drive system ................1-2-3 1-2-4 Mechanical construction .............. 1-2-4 II ELECTRICAL SECTION 2-1 Electrical Parts Layout 2-1-1 Electrical parts layout ..............

  • Page 3: Specifications

    1-1-1 Specifications Paper ..........Plain paper (60 – 160 g/m Special paper: Transparencies, tracing paper, colored paper and letterheads Capacity ......... 200 sheets (75 – 80 g/m Power source ......... Electrically connected to the copier 1-1-1...

  • Page 4: Part Names And Their Functions

    1-2-1 Part names and their functions Figure 1-2-1 1 Bypass table 2 Insert guides 1-2-1...

  • Page 5: Machine Cross Section

    1-2-2 Machine cross section Paper path Figure 1-2-2 Machine cross section 1-2-2...

  • Page 6: Drive System

    1-2-3 Drive system As viewed from machine front Figure 1-2-3 Drive system 1 Bypass drive gear 30 9 Bypass paper feed clutch gear 2 Gear 39/18 0 Gear 18 3 Bypass lift clutch gear ! Gear 16 4 Bypass forwarding pulley gear @ Gear 18 5 Idle gear 30 # Gear 18...

  • Page 7: Mechanical Construction

    1-2-4 Mechanical construction & ⁄ ¤ Figure 1-2-4 Bypass unit 1 Bypass table @ Bypass upper guide 2 Bypass lift # Bypass lower guide 3 Bypass friction plate $ Upper bypass feed guide 4 Bypass lift cam % Lower bypass feed guide 5 Bypass lift spring ^ Bypass paper switch (BYPPSW) 6 Bypass forwarding pulley...
  • Page 8 The bypass table can hold up to 200 sheets of paper. When copying starts, the bypass lift clutch (BYPLCL) turns on, lifting the bypass lift until paper on the bypass table comes into contact with the bypass forwarding pulley. The bypass paper feed clutch (BYPPFCL) then turns on, transmitting the drive motor (DM) drive to the bypass forwarding pulley and bypass paper feed pulley to start primary paper feed.
  • Page 9 Image ready 48 ms Start key 100 ms 110 ms BYPPFCL 450 ms 270 ms BYPFCL 30 ms 110 ms BYPLCL 100 ms BYPFSW " × 8 Manual copy density control, copy paper: A5R/5 ", magnification ratio 25% Timing chart 1-2-1 A 100 ms after the start key is pressed, the drive motor (DM) turns on.

  • Page 10: Electrical Parts Layout

    2-1-1 Electrical parts layout Machine front Machine inside Machine rear Figure 2-1-1 Bypass unit 1. Bypass paper switch (BYPPSW) ....Detects the presence of paper on the bypass table. 2. Bypass paper length switch (BYPPLSW) ..Detects the length of paper on the bypass table.

  • Page 11: Paper Misfeed Detection

    2-2-1 Paper misfeed detection BYPPFCL RSW* BYPFSW *Copier Figure 2-2-1 2-2-1...

  • Page 12: Paper Misfeed Detection Conditions

    2-2-2 Paper misfeed detection conditions The detection time (ms) is for A4 (lateral / 11"×8 ") paper • No paper feed from bypass table (jam code 14) The bypass feed switch (BYPFSW) does not turn on within 1917 ms of the bypass paper feed clutch (BYPPFCL) turning on;...
  • Page 13 • Multiple sheets in bypass paper conveying section (jam code 23) The registration switch (RSW) does not turn off within 1320 ms of the bypass feed switch (BYPFSW) turning off. BYPFSW 1320 ms RSW* Timing chart 2-2-4 The registration switch (RSW) does not turn off within 1320 ms of the bypass feed switch (BYPFSW) turning on.

  • Page 14: Unpacking

    3A2-1 3-1-1 Unpacking (optional for 120 V specifications only) (1) Unpacking Figure 3-1-1 Unpacking 1 Bypass unit 8 Outer case 2 Bypass feed section knob 9 Accessories tray 3 Bypass tray 0 Plastic sheet 4 Tray pin ! Air-padded bag 5 M3 ×...
  • Page 15 (2) Installing the bypass unit <Procedure> 1. Remove the six screws holding the upper right cover and then the cover. 2. Remove the four screws holding the lower right cover and then the cover. 3. Remove the two spacers from the bypass unit. Spacers Figure 3-1-2 4.
  • Page 16 5. Insert the pin on the front of the bypass tray into the front frame of the bypass unit. 6. Route the harness of the bypass tray through the cutouts in the rear frame of the bypass unit. 7. Insert the tray pin through the rear frame of the bypass unit into the bypass tray to secure the tray.
  • Page 17 9. Remove the four screws and then the bypass cover from the upper right cover. Screws Bypass cover Screws Upper right cover Figure 3-1-6 10. With the bypass tray open, refit the upper right cover and lower right cover. 11. Open the front cover. 12.
  • Page 18 13. Fit the bypass feed section knob by sliding the D-shaped hole over the shaft in the copier. Secure the bypass feed section knob using the screw. D-shaped hole Bypass feed section knob M3 × 8 screw Figure 3-1-8 14. Close the front cover. 15.

  • Page 19: Maintenance Mode

    3-2-1 Maintenance mode Mainte- nance Description item No. U031 Checking switches for paper conveying Description Displays the on-off status of each paper detection switch on the paper path. Purpose To check if the switches for paper conveying operate correctly. Method 1.
  • Page 20 Mainte- nance Description item No. U032 Checking clutch operation Description Turns each clutch on. Purpose To check the operation of each clutch. Method 1. Press the start key. The screen for selecting an item is displayed. 2. Select the clutch to be operated using the cursor up/down keys. 3.
  • Page 21 Mainte- nance Description item No. U051 Adjusting the amount of slack in the paper Adjustment See page 3-3-14. U901 Checking/clearing copy counts by paper feed locations Description Displays or clears copy counts by paper feed locations. Purpose To check the time to replace consumable parts. Also to clear the counts after replacing the consumable parts.

  • Page 22: Precautions For Assembly And Disassembly

    3-3-1 Precautions for assembly and disassembly ( 1 ) Precautions • Be sure to turn the main switch off and disconnect the power plug before starting disassembly. • When handling PCBs, do not touch connectors with bare hands or damage the board. •...
  • Page 23 ( 2 ) Running a maintenance item Start Enter “10871087” using the numeric keys. · · · · · Maintenance mode is entered. Enter the maintenance item number · · · · · The maintenance item is selected. using the numeric keys or the cursor up/down keys.

  • Page 24: Bypass Section

    3-3-2 Bypass section ( 1 ) Replacing the bypass forwarding, paper feed, and separation pulleys Replace the bypass forwarding, paper feed, separation pulleys as follows. <Procedure> 1. Open the front cover. Remove the screw holding the bypass feed section knob and then the shaft.
  • Page 25 4. Remove the two screws holding the bypass unit and then the unit. Note: To remove the bypass unit, slide the unit toward the machine front and gently remove. Guides Bypass unit Screws Figure 3-3-3 Detaching the bypass unit 3-3-4...
  • Page 26 Detaching the bypass paper feed pulley 5. Remove the two screws and clamp holding the bypass reinforcement and then the reinforcement. Bypass reinforcement Clamp Screw Screw Bypass forwarding pulley Bypass paper feed pulley Bypass forwarding shaft Screw Rear bypass lift cam Figure 3-3-4 Detaching the bypass reinforcement 6.
  • Page 27 7. Remove the stop ring, front bypass paper feed gear, pin and bushing. Stop ring Front bypass paper feed gear Figure 3-3-5 Detaching the front bypass paper feed gear 3-3-6...
  • Page 28 8. Remove the cables of the bypass lift clutch and bypass paper feed clutch from the clamps and detach the connectors. Remove the stop rings and then the clutches. Stop rings Clamps Connectors Bypass lift clutch Bypass paper feed clutch Figure 3-3-6 Detaching the bypass lift clutch and bypass paper feed clutch 3-3-7...
  • Page 29 9. Remove the connector and bushing, and then pull the bypass paper feed shaft out toward the machine rear. 10. Remove the stop ring holding the bypass paper feed pulley and then the pulley. Caution: When removing the bypass paper feed shaft, take care not to damage the shaft or frame.
  • Page 30 Detaching the bypass forwarding pulley 12. Detach the connector and remove the bypass forwarding shaft and bypass paper feed shaft. Caution: When removing the bypass forwarding shaft and bypass paper feed shaft, take care not to damage the shafts or frame. 13.
  • Page 31 3A2-1 Detaching the bypass separation pulley 14. Remove the spring, stop ring and bushing, and then the bypass separation pulley. Stop ring Bypass separation Spring Bushing Bypass separation shaft pulley Figure 3-3-9 Detaching the bypass separation pulley 15. Replace the bypass paper feed, forwarding and separation pulleys. Caution: •...
  • Page 32 ( 2 ) Replacing the bypass paper feed clutch and bypass lift clutch Replace the bypass paper feed clutch and bypass lift clutch as follows. <Procedure> 1. Remove the bypass tray and bypass unit (see page 3-3-3). 2. Remove the cables of the bypass lift clutch and bypass paper feed clutch from the clamps and detach the connectors.
  • Page 33 ( 3 ) Replacing the bypass feed clutch Replace the bypass feed clutch as follows. <Procedure> 1. Remove the bypass tray and bypass unit (see page 3-3-3). 2. Remove the cable from the clamp and detach the connector. Remove the stop ring and then the bypass feed clutch.
  • Page 34 ( 4 ) Adjusting the position of the bypass table adjuster Perform the following adjustment if there is a regular error between the centers of the original and copy image when the bypass table is used. <Procedure> Start Enter maintenance mode. Enter "993"...
  • Page 35 ( 5 ) Adjustment after roller and clutch replacement Perform the following adjustment after fitting rollers and clutches. (5-1) Adjusting the amount of slack in the paper Make the following adjustment if the leading edge of the copy image is missing or varies randomly, or if the copy paper is Z-folded.
  • Page 36 • Adjusting the amount of slack at the registration roller Start Enter maintenance mode. Enter “051” using the numeric keys. Press the start key. Select “RESIST DATA.” RESIST DATA: amount of slack at the registration roller Select “BYPASS DATA.” Press the interrupt key. Press the start key.

  • Page 37: Image Formation Problems

    3-4-1 Image formation problems (1) When the bypass unit Causes is used, the center of 1. Bypass table adjuster installed incorrectly. the original and that of the copy image do not align. Causes Check procedures/corrective measures 1. Bypass table adjuster installed Adjust the installation position of the bypass incorrectly.

  • Page 38: Paper Misfeeds

    3-4-2 Paper misfeeds Problem Causes/check procedures Corrective measures Paper on the bypass table is Change the paper. A paper jam in extremely curled. the paper feed Check if the bypass forwarding Check visually and replace any section is indi- pulley, bypass separation pulley deformed pulleys.
  • Page 39 Problem Causes/check procedures Corrective measures Check if the bypass separation Check visually and replace if A paper jam in pulley or bypass paper feed necessary. the paper feed pulley is deformed. section is indi- cated during copying (multi- ple sheets in bypass paper conveying section).

  • Page 40: Electrical Problems

    3-4-3 Electrical problems Problem Causes Check procedures/corrective measures Broken bypass Check for continuity across the coil. If none, The bypass paper feed clutch replace the bypass paper feed clutch. paper feed coil. clutch does Poor contact of the Reinsert the connector. Also check for conti- not operate.
  • Page 41 Problem Causes Check procedures/corrective measures Poor contact of the Reinsert the connector. Also check for conti- The message bypass paper nuity within the connector cable. If none, re- requesting switch connector pair or replace the cable. paper to be terminals. loaded is Defective bypass With 5 V DC present at CN4-11 on the en-...

  • Page 42: Mechanical Problems

    3-4-4 Mechanical problems Problem Causes/check procedures Corrective measures Check if the surfaces of the fol- Clean with isopropyl alcohol. No primary lowing rollers or pulleys are paper feed. soiled with paper powder: by- pass forwarding pulley, bypass separation pulley and bypass paper feed pulley.
  • Page 43 Problem Causes/check procedures Corrective measures Check if the pulleys, rollers and Grease the bearings and gears. Abnormal gears operate smoothly. noise is heard. Check if the following electro- Remedy. magnetic clutches are installed correctly: bypass paper feed clutch, bypass lift clutch and bypass feed clutch.
  • Page 44 × × Timing chart No. 1 Copying an A3/11" 17" original onto an A5R/5 " " copy paper from the bypass table, magnification ratio 25%, manual copy denisty control Start key 48 ms 100 ms 300 ms CN11-A3 250 ms 110 ms CN10-A5 450 ms...