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Virginia PhelpsAug 21, 2025
What does Jam Error mean on a Riso Printer?
- AAngela JarvisAug 21, 2025
When a Jam Error appears on your Riso Printer, it indicates that the master is jammed.
What does Jam Error mean on a Riso Printer?
When a Jam Error appears on your Riso Printer, it indicates that the master is jammed.
What to do if Riso MZ770 says 'Master Disposal Box 1 is Full'?
If your Riso Disc Duplicator displays the message 'Master Disposal Box 1 is Full Empty Master Disposal Box', it indicates that the Master Disposal Box is full. You should empty the Master Disposal Box and install a new Master Roll.
How to fix master mis-feed on Riso Disc Duplicator?
If your Riso Disc Duplicator shows 'Master Mis-Feed Pull Out Master Making Unit and Rewind Master Roll, then Reset Master in Place', it means the master is improperly installed. Pull out the Master Making Unit, rewind the master, and then reinstall it. If the leading edge of the master is wrinkled or torn, cut the edge straight and reinstall.
What to do if Riso MZ770 says 'Master Not Set in Place'?
If your Riso Disc Duplicator displays the message 'Master Not Set in Place Insert Lead Edge of Master into Master Entrance and Close Master Making Unit', it indicates that the master is improperly installed or is missing. Pull out the Master Making Unit and reinstall the master. Ensure that if the leading edge of the master is wrinkled or torn, you cut the edge straight before reinstalling.
How to remove jammed master from Riso MZ770 disposal unit?
If your Riso Disc Duplicator displays the message 'Master Jammed in Disposal Unit Pull Out Master Disposal Box 1 and Remove Jammed Master', it means that the master is jammed in the Master Disposal Unit. Pull out the Master Disposal Box and remove the jammed master. If the masters are difficult to remove, pull out the drum first, and then remove the jammed master.
Why are there vertical blank lines on Riso Disc Duplicator printed copies?
If you find vertical blank lines on printed copies from your Riso Disc Duplicator, the Thermal Print Head of the Master Making Unit or the Scanner Glass of ADF unit has been stained with dirt, white-out, etc. Gently wipe the Thermal Print Head or Scanner Glass with a soft cloth.
What to do if Riso MZ770 says 'Close Front Cover'?
If your Riso Disc Duplicator displays the message 'Close Front Cover', it means that the Front Cover is open or improperly closed. Check for the magnet underneath the Front Cover and firmly close it.
How to fix master loading error on Riso Disc Duplicator?
If your Riso Disc Duplicator shows 'Master Loading Error Pull Out Print Drum 1 and Discard Master', it means that the master did not properly attach to the Print Drum. Follow these steps: 1) Pull out the Print Drum and remove the master from the drum. 2) Return the Print Drum in place. 3) Pull out the Master Making Unit and reinstall the master. 4) Press the key.
What to do if Riso MZ770 Disc Duplicator says 'Print Drum 1 is not Set in Place'?
If your Riso Disc Duplicator displays the message 'Print Drum 1 is not Set in Place Press Drum Release Button and Pull Out Print Drum Once after Button Lights', it indicates that the Print Drum is locked but not pushed in properly. Press the Print Drum Release Button. Remove the Print Drum after the button is lit and reinstall it.
Why are printed images faint or blurred on Riso MZ770?
If printed images are faint or printed texts are blurred on your Riso Disc Duplicator, the machine may not have been used for an extended period, causing the ink on the surface of the Print Drum to dry. Printing with dried ink will produce light or faded copies. Press the key and make several copies before making copies to be actually used. Or use the “Idling Action”.
General| Brand | Riso |
|---|---|
| Model | MZ770 |
| Category | Disc Duplicator |
| Language | English |
Explains basic printer operations, handy tips, setup, cautions, consumables, and troubleshooting procedures.
Describes precautions to be observed when installing the machine.
Describes precautions to be observed when handling the machine.
Information on recommended consumables and proper storage.
Precautions for handling ink, including eye and skin contact safety.
Instructions for connecting the machine to a computer for direct printing.
Details usable printing paper sizes and weight restrictions.
Specifies usable original sizes and weight restrictions for various scanning methods.
Details the maximum printing areas and required margins for originals.
Lists materials that should not be printed, including legal and copyright considerations.
Identifies and describes the main parts of the machine.
Describes optional devices like the Auto Document Feeder AF-VI:II and DX-1.
Explains the functions of the control panel keys and display.
Details the various screens and their stages, including basic layouts.
Covers initial setup steps for printing, including turning power on and selecting modes.
Instructions for setting up the paper feed tray and loading paper.
Guides on setting up the paper receiving tray for proper paper output.
Explains the general print job flow for 2-Colour printing.
Details the process for 2-colour printing using two separate originals.
Explains 2-colour printing by separating colours from a single original.
Instructions for printing in a single colour using either Drum 1 or Drum 2.
Enables receiving and printing original data created on a computer.
Details the steps for printing data from a computer.
Explains automated printing steps and how to stop operations.
Describes how to control output from Master Making/Print Basic Screens.
Explains how to change stop timing settings via the printer driver.
Selects appropriate modes (Line, Photo, Duo, Pencil) for best master suitability.
Applies dot screening to photo originals for clearer printing.
Adjusts contrast for ill-defined photos to print more clearly.
Adjusts light and shadow portions of a photo by 3 tones.
Adjusts scanning contrast for background colour or ink density.
Methods to enlarge or reduce the original document.
Performs master-making and printing automatically in sequence.
Erases shadows in the binding 'spine' and peripheral areas of bound documents.
Makes a master that requires less ink when printing.
Prints multiple originals on one sheet.
Shows orientation and print results based on number of images.
Shows magnification/reduction ratios for Multi-Up Print.
Prints two copies of the same original side-by-side on one sheet.
Details how to perform multi-up printing.
Specifies short edge size for printing ticket-like originals.
Switches one of two originals to print, useful for letterheads.
Applies maximum printing area to scanned image, regardless of paper or original size.
Reproduces a master from stored data without rescanning.
Cuts the top margin of an original to skip registration marks.
Offsets margins for all originals when using ADF or platen glass.
Previews scanned original or computer data for layout and colour separation.
Selects print speed from five levels, adjustable during printing.
Enables faster printing by setting the '150ppm' option.
Selects print density from five levels per drum, adjustable during printing.
Adjusts print position vertically and horizontally for each drum.
Aligns print position of both drums simultaneously.
Prints proof copies to check quality after adjustments.
Monitors for multiple paper feeds; disables check for special paper types.
Extends paper ejection interval for ink drying.
Adjusts paper feed and output settings for special paper.
Retrieves pre-configured custom settings from the parameter list.
Saves current settings into the parameter list for easy retrieval.
Modifies parameters for Paper Feed Adj. and Paper Eject Adj.
Deletes registered settings from the Special Paper Ctrl.
Divides originals into groups to print different numbers of copies or sets.
Explains how to print in sets using the 'Programme' feature.
Details how to set up programmed printing using touch screen and quantity keys.
Stores frequently-used Programme settings for later retrieval.
Changes programme names to better describe their usage or purpose.
Deletes programmed settings.
Retrieves a stored programme and modifies its settings.
Modifies number of copies or sets in stored programmes.
An example of using Easy 2Colour and Programme together.
Saves print job settings into Job Memory for later retrieval.
Stores print job settings into Job Memory.
Changes the name of a stored job memory.
Deletes stored job memory settings.
Retrieves stored job settings and prints.
Extends the inactive period to prevent job interruption.
Performs idling action before master-making for high print quality.
Discards masters to prevent unauthorized reproduction of confidential documents.
Selects scanning sides (Front, Back, Duplex) for the ADF DX-1.
Specifies scanning side options like Simplex, Duplex, and Paging Direction.
Displays information on printed copies and master counts.
Rotates original data received from a computer by 180 degrees for master making.
Allows checking proof copies and adjustments before creating the next master.
Modifies default settings to suit user needs.
Places frequently-accessed functions on Basic or Selections screens for quick access.
Enters paper dimensions for non-standard sizes into memory.
Deletes registered custom paper sizes.
Protects confidential documents by discarding masters after printing.
Features for saving original data to memory and scanning.
Saves scanned hard-copy originals as storage data.
Scans an original for 1-colour printing and stores it.
Scans originals from Drum 1 and Drum 2 for 2-colour printing storage.
Configures data name, save location, and owner name for scanned data.
Specifies the size to which the scanned original will be saved.
Retrieves stored data and prints it, offering options for page selection.
Overlays stored data onto a hard-copy original during 1-colour printing.
Creates masters from original and storage data for 2-colour printing.
Changes the storage data used as a stamp.
Deletes registered stamp data.
Covers print functions and operations when using a linked printer.
Sets up optional functions like sorter or duplex unit on a linked printer.
Enables double-sided printing when a Duplex Unit is installed.
Checks and reports remaining ink, master, and disposal box space.
Procedure for replacing the master roll when depleted.
Instructions for replacing the ink cartridge when ink is depleted.
Discards used masters from the master disposal box.
Steps to remove and replace the print drum.
Procedures for proper disposal of ink cartridges, master cores, and masters.
Steps for periodic cleaning of machine parts to maintain print quality.
Information to determine causes and actions for machine messages.
Explains the layout and components of pop-up messages.
Screen displayed when consumable information is not proper.
Lists optional accessories to enhance machine capabilities.
Technical specifications for the RISO MZ970 and MZ770 models.
Procedure for canceling the 'Protect' setting, to be done by an administrator.
