Text preview for : Service Manual BP20.pdf part of Service Manual BP20 Printer Machine Ricoh Aficio BP20/ BP20N (G144/G145)
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G144
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Aficio BP20/ BP20N (G144/G145)
Service Training
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Ricoh Europe B.V. Technical Training Centre
G144(Campari-P1)_full-spt_SER_ppt_EN_1.1.a.ppt
List of Changes: (See: View > Notes Page) Date of change 30-09-2005 13-10-2005 Version History 1.0.a 1.1.a Description Initial release Minor changes
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Objectives
After completing this training you should be able to: install the machine in the field perform maintenance on the machine repair the machine in the field
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Requirements
Training materials Machine (G144/G145) Workstation
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Training Materials
This presentation Service manual G144/G145 Operating Instructions G144/G145
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Pre-requisites and Exam
Basic copier for Service Master Basic printing for Service Master Exam multiple choice Note: You will need the Operating Instructions to do this exam!
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Module Overview
1. Product Outline 2. Specifications 3. Installation 4. Machine Overview 5. Engine 6. Maintenance 7. Replacements 8. Troubleshooting
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1. Product Outline
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1. Product Outline
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Overview
The BP20 is a small 20 ppm black-and-white printer Two versions: BP20: Standalone version BP20N: Networked version
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1. Product Outline
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Targets
Toner AIO: 5k (3,5 for starter cartridge) APV: BP20: 600/month BP20N: 1k/month Max PV: 2500 MPBF: 30k Unit Life: 150k or 5 years, whichever comes first
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1. Product Outline
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Optional Units
The machine has the following optional units. 1 x 250 sheet paper feed unit Memory (32/128MB)
» The machine has a standard memory of 16 MB. » This can be expanded to a maximum of 144 MB.
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1. Product Outline
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Printing Functions
The machine has the following printing functions: Toner Save Print quality option Poster printing Multiple pages per sheet (N-up) Scale printing Fit to page printing Different source for first page Watermark Overlay Print order
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1. Product Outline
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Software
The machine is delivered with an installer which includes several software applications: PCL6 driver Multi Direct Print
» Only for network installation
Status Monitor Remote Control Panel
» Only for local installation
Set IP
» Only for network installation
Multi Direct Print Type S IPP Port
» Only for network installation
User's Guide
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1. Product Outline
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Multi Direct Print
Adds the MDP printer port Auto detection of printers on the network while adding printer ports
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1. Product Outline
Multi Direct Print Type S is the utility that provides Port Monitoring function for peer to peer connection with TCP/IP protocol. This utility will be installed when a network port is chosen during printer software installation for Windows 95, 98 and Me. MDP IPP Port does basically the same thing, but using an IPP port instead of a typical TCP/IP port.
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Status Monitor Function
The status monitor provides the following two major functions: Monitor printer status Troubleshooting guide
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1. Product Outline
Monitor printer status The status monitor window shows on the PC screen if an error occurs while printing. This feature can also show when the print job is completed. Troubleshooting guide Troubleshooting guide comes with the Status Monitor. Double click the status monitor icon to access the guide. The guide is flash movie that lets you find solutions for the following: Clearing paper jams Loading paper Closing covers Installing the toner cartridge Solving system errors
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Remote Control Panel
RCP is the software control panel for DOS environment. It provides printer control when DOS printer drivers are not available or when certain print settings are not available through DOS software program.
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1. Product Outline
RCP is not a printer driver. It should be used to set print settings that are not available through the DOS software program. Printer drivers are supplied by the manufacturers of DOS software program.
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Set IP
Set IP is the utility that enables users to configure IP address, Subnet Mask and Default Gateway. The utility is necessary for non-DHCP environment when users connect the printer via TCP/IP.
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1. Product Outline
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Embedded Web Server (EWS)
This function is basically same to Ricoh's Web Image Monitor. Users can monitor the status and change/configure printer setting via web browser.
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1. Product Outline
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2. Specifications
Slide 18
2. Specifications
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General Specifications
Print speed 20 ppm for A4 22 ppm for Letter Resolution 600 x 600 dpi (default) 1200 x 1200 dpi Warm up time: 42 seconds First print time 10 seconds from stand-by 50 seconds from energy saver mode
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2. Specifications
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Paper Input Specifications
Paper input Standard paper tray: 250 sheets By-pass tray: 50 sheets Optional paper tray: 250 sheets Paper sizes Standard tray: A4/DLT-A5 By-pass tray: A4/DLT-A6, Free size Paper weight Standard/Optional paper tray: 60-90 g/m² (16-28 lb.) By-pass tray: 52-163 g/m² (14-43 lb.) Paper output: 151 sheets maximum 150 sheets face down 1 sheet face up This machine does not support duplex printing
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2. Specifications
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Controller Specifications
CPU: 166 MHz Printer languages Standard: PCL6 Interfaces Standard: IEEE1284, USB 2.0 Memory Standard: 16 MB Maximum: 144 MB Network 10/100 Base TX (BP20N only)
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2. Specifications
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3. Installation
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3. Installation
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Overview
The user installs this machine. This means that there is no installation procedure in the Service Manual. However you should also know how to do a full machine installation in case you are required to do so in the field. Use the Operating Instructions to install the machine.
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3. Installation
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Before You Start
Go over the following with the customer before you install the machine. You can get the details from the Operating Instructions (OI), Section 2. Unpacking the machine
» Show the customer all the accessories. Point out the packing tapes and show the customer how to correctly remove them.
Selecting a location
» Assist the customer in selecting a suitable area to put the machine. Make sure the customer understands the machine requires certain clearance. » Explain to the customer about the dangers of direct sunlight, cool air, etc.
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3. Installation
More on Before you Start You may have to install the machine this time. However if the customer is satisfied with this machine they may order a second machine at a future date. At this time. the customer may have to install the second machine by themselves. For this reason you should cover the points shown on the slide.
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Installation - Main Unit
Install the toner cartridge Operating Instructions (IO), Section 2 Do the following after you have installed the toner cartridge. Load paper to the machine Change the paper size in the tray Connect the machine Switch the machine on Print a demo page
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3. Installation
More on Installation Show the customer the following How to shake the toner cartridge before you install it to the machine. The correct procedure to load paper to the machine as well as how to change the tray size. This can prevent paper jams in the future. How to connect the machine. They may want to move the machine to another location in the future. How to switch on the machine.
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Printer Software
Do the following: Install the machine software Repair the software Remove the software Use the Set IP application
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3. Installation
Operating Instructions, Section 2 More on Printer Software Make sure to examine the system requirements before you install the system software. Do the repair/remove software procedures as often as you feel necessary.
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Options
Install the following optional units. Memory Paper tray unit
Slide 27
3. Installation
Operating Instructions, Appendix B
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Last Step
Do a couple of print jobs to make sure the machine works correctly. Try and use various paper sizes and print media if possible.
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3. Installation
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4. Machine Overview
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4. Machine Overview
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Overview
This section will show you how to use the machine. Most of the information in this module is for the user. The engine and main components will be very briefly introduced in this training module. More details will be given in the engine training module.
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4. Machine Overview
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Operation Panel
On Line/Error LED Toner save LED Cancel button
Press cancel button 1 2 3 4 5 While printing 0.5 sec 2 sec 6 sec 10 sec
Result Cancel current print job Toner Save on/off Print Demo Page Print Config Page (print counter avilable) Self cleaning and output Cleaning Paper
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4. Machine Overview
Service Manual, Section 6.1.3 More on the Operation Panel Go to the machine and have a look at the operation panel. Show the operation panel to the customer and let them know how to use the button.
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Printing Process
Paper feed mechanism Separation pad mechanism Drive mechanism One main motor drives the machine Development unit Single component type developer Transfer unit Transfer roller system Fusing unit Hot roller/ pressure roller
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4. Machine Overview
More on the Printing Process Paper feed mechanism Together with sensors in the feed path these serve to control paper registration and guide the paper through the Image transfer, image development, image fusing and exit assemblies. Drive mechanism The main drive mechanism uses a Bi-polar 2 phase motor. It drives the OPC, paper pick-up and paper feed rollers using a gear train mechanism. Development unit The machine uses the laser scanning unit (LSU) of the mechanism to create images on the OPC drum. Transfer unit High voltages supplied by the HVPS move the image from the developer unit onto paper. Fusing unit The fusing unit applies the toner image onto the paper. This is achieved with a temperature controlled heating unit.
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Using the Machine
Practice the following. Using print materials. Printing tasks. Printing from DOS applications (if applicable)
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4. Machine Overview
Operating instructions, Section 3, 4, Appendix A, Administrator Guide
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5. Engine
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5. Engine
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Overview
The engine and main components will be covered in this chapter.
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5. Engine
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System Layout
Fusing Unit LSU Toner Cartridge
By-pass Tray
PR
EXIT Sensor
Slide 36
Paper Tray Unit
OPC
Paper Empty Sensor
Paper Feed Sensor
5. Engine
More on the System Layout Examine the system layout. It is important that you have good knowledge of the machine and machine component locations. This knowledge will be useful when you need to clear paper jams. Paper jams will be covered in more detail in the troubleshooting section.
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Paper Feed
Paper separation method A friction pad separates individual sheets of paper Paper tray mechanism Center load method Software detects paper size as it is feed through the machine The rear and side paper guides can be adjusted for paper sizes Paper empty sensor detects paper end Pick-up roller Feeds paper to the printer
Slide 37
5. Engine
Service Manual, Section 6.3.1
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Transfer Unit
Pre-transfer Lamp (PTL) and transfer roller move toner from the OPC drum onto the paper. The PTL shines light onto the OPC.
» This reduces the electrical charge on the surface of the OPC drum and improves the transfer efficiency.
The transfer roller attracts toner from the OPC to the paper.
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5. Engine
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Drive
The main PWA supplies power to the paper drive assembly. The main motor supplies power to the following. Paper feed unit Toner cartridge Fusing unit Pick-up, feed and exit rollers.
Slide 39
5. Engine
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Fusing Unit
Mechanism Fusing lamp Hot roller Pressure roller Thermistor and thermostat. Safety features 1st protection device: Hardware cuts off when the machine overheats (>207°C). 2nd protection device: Software cuts off when the machine overheats (>220°C). 3rd protection device: Thermostat cuts off mains power to the fusing lamp (>160°C).
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5. Engine
More on Fusing Unit Overview Safety Devices Fusing power gets cut off when the front cover is opened. LSU power gets cut off when the front cover is opened. The temperature of the fusing units cover surface stays at less than 80ºC. This protects the user. A caution label is attached where the customer can see it easily when the rear cover is opened
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Main Fusing Components
Hot Roller The fusing lamp heats the surface of the hot roller. Toner gets melted and stays on the surface of the paper when the paper passes between the hot roller and pressure roller. Pressure Roller The pressure roller is mounted under the hot roller.
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5. Engine
The surface of the hot roller and pressure roller is coated with Teflon to ensure that toner does not stay on the roller surface.
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Fusing Unit Safety Components
Thermostat The thermostat cuts off the power to the fusing lamp to not let the machine overheat. Power gets cut when the thermostat temperature gets to 160°C. Thermistor The thermistor detects the surface temperature of the hot roller. This information goes to the main processor which uses this information to regulate the temperature of the hot roller
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5. Engine
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Laser Unit
LSU converts video data into an electrostatic latent image on the surface of the OPC drum. This gets done by controlling the laser beam and exposing the surface of the OPC drum to the laser light. Polygon mirror reflects the laser light onto the OPC drum. Each side of the mirror is one scan line.
Slide 43
5. Engine
More on the Laser Unit The OPC drum rotates as the paper feeds to scan the image down the page. A /HSYNC signal gets created when the laser beam from LSU gets to the end of the polygon mirror. Then the signal goes to the controller. The controller detects the /HSYNC signal to adjust the vertical line of the image on paper.
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Toner AIO Cartridge
Charge Roller OPC Drum Doctor Blade Supply Roller
Developer Roller
Transfer Roller
Slide 44
5. Engine
More on Toner AIO Cartridge The toner cartridge contains the OPC unit and toner unit. The OPC unit consists of the OPC drum and charging roller. The toner cartridge unit consists of the toner, supply roller, developing roller, and doctor blade. There is no toner near end sensor in the machine. But the machine has a toner remaining amount sensor. A cleaning blade is used to collect used toner. Developing method: Non magnetic 1 element contacting method Toner: Non magnetic 1 element shatter type toner Toner life span: 5,000 sheets (IDC Pattern/A4 standard) OPC cleaning: Electrostatic process
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New AIO Detection
A new supply AIO cartridge has a ID chip. The machine knows a new cartridge has been installed when the chip gets detected.
Slide 45
5. Engine
More on New Toner Cartridge Detection When the new cartridge is installed in the machine, the machine automatically detects by the ID chip that the cartridge is brand-new. Then the machine resets the total dot counter (TOTAL TONER COUNT) and CRU print counter (Cru Prints). and increments the counter for counting the number of CRU replaced (Replaced Toner Counts). In the case when the "Replaced Toner Counts" is 0, the CRU currently installed is regarded as a starter CRU. In this condition, threshold to detect toner end is shorter than that for supply CRU.
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Toner End Detection
The machine does not have a toner end sensor. The machine checks the amount of toner with software. The machine counts and adds up black dots as toner consumption. For example, the following occurs when the machine prints 5% of test chart.
» Starter cartridge: Approx. 4,750,000,000 dots will be added » Supply cartridge: Approx. 7,500,000,000 dots will be added
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5. Engine
More on Toner End Detection When the total number of dots gets to a pre-programmed figure (as for toner near-end), the machine shows "TONER LOW". After another period of dots has been counted up, the machine finally shows "TONER EMPTY" (as for toner end), and the machine stops printing.
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Sensors
Paper empty sensor The machine flashes the red ERROR LED when the paper feed unit is empty. By-pass tray sensor The CPU monitors this sensor to detect if paper is in the bypass tray. Paper feed sensor Paper gets detected by the photo interrupter when it passes the actuator on the feed sensor. Paper exit sensor The exit sensor on the engine board, and actuator on the frame detect when paper exits from the machine. Cover open sensor Located on the power supply board and is operated by a molded tab on the front cover.
Slide 47
5. Engine
Service Manual, Section 6.4.4
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Circuitry
DC fan/solenoid driving Two solenoids are driven by signals from the CPU (by-pass and paper pick-up). Motor drive Software controls the acceleration, constant speed and deceleration. Transfer PWM (Pulse Width Modulation) controls the charging voltage, developing voltage and the transfer voltage. Fusing The resistance value of the thermistor detects the temperature of the heat roller's surface LSU The laser diode turns on and the polygon motor is enabled when it gets a print signal
Slide 48
5. Engine
More on Circuitry Drive The motor drives the paper feed unit, developing unit, fusing unit and exit assembly. Transfer The output voltage changes according to the PWM duty cycle. Environment recognition detects the transfer voltage used when the paper passes the transfer roller. Fusing The A/D converter measures the thermistor resistance and lets the CPU determine the temperature of the heat roller. The AC power is controlled by comparing the target temperature to the value from the thermistor. An error shows if the value from the thermistor is out of the controlling range during the fusing process. LSU The LSU consists laser diode and the polygon motor control. The laser diode turns on and the polygon motor is enabled when the printing signal occurs. Hsync occurs when the light sensor detects the beam, and LReady occurs when the polygon motor speed becomes a normal. The LSU is ready if these two conditions are satisfied.
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Fusing Unit Errors 1
Open heat error Temperature stays lower than 68°C for more than 28 seconds during warm-up Low heat error Standby:
» Temperature stays lower than 80°C for more than 10 seconds.
Printing:
» Temperature stays lower than 145°C for more than 4 seconds for up to two consecutive print jobs.
Temperature stays 25°C lower than the fixed fusing temperature for more than 4 seconds for up to two consecutive print jobs. Temperature stays higher than 220°C for more than 3 seconds.
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5. Engine
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Fusing Unit Errors 2
Overheat error Temperature stays higher than 220°C for more than 3 seconds. All LEDs flash when the above errors get detected.
Slide 50
5. Engine
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LSU Errors
Polygon motor error The polygon motor speed does not become stable Hsync error The polygon motor speed is stable, but the Hsync is not generated
Slide 51
5. Engine
More on LSU Errors The LSU consists laser diode and the polygon motor control. The laser diode turns on and the polygon motor is enabled when the printing signal occurs. Hsync occurs when the light sensor detects the beam, and LReady occurs when the polygon motor speed becomes normal. The LSU is ready if these two conditions are satisfied.
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Main Control Board
Main processor: ASIC (166MHz) Memory parts Flash Rom, Control Program and DRAM, Engine interface parts Motor control, fusing unit control, HVPS control, sensors etc. PC Interface USB, Parallel, Network Bus, DMA and I/O handling
Slide 52
5. Engine
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Power Supply
High voltage power supply (HVPS) Switching mode power supply (SMPS)
Slide 53
5. Engine
More on the Power Supply The SMPS and HVPS are on the same board. The SMPS supplies DC power to the system. It takes either 110V or 220V and outputs the +5V and +24VS to the main and other PBAs. The HVPS creates the high voltage of THV/MHV/Supply/Dev and supplies it to the toner cartridge. The CPU modifies the voltage settings to provide ideal voltages to create images. The HVPS part uses the 24V and outputs the high voltage for THV/MHV/BIAS. Then the outputted high voltage get supplied to the toner, OPC cartridge and transfer roller.
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High Voltage Power Supply
The HVPS supplies the following voltages: Transfer high voltage (THV+) Charge voltage (MHV) Cleaning voltage (THV-) Developing voltage (DEV) Supply voltage
Slide 54
5. Engine
Service Manual, Section 6.5.1
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Switching Mode Power Supply
The SMPS supplies the following: AC Input Rated Output Power Consumption Power
Slide 55
5. Engine
Service Manual, Section 6.5.2
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6. Maintenance
Slide 56
6. Maintenance
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Overview
The user can do all maintenance procedures for this machine. However you should also know how to maintain this machine in the event that you are asked to do so in the field.
Slide 57
6. Maintenance
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6.1 Service PM
Slide 58
6.1 Maintenance > Service PM
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Service PM Intervals
Transfer roller: 60 K Fusing unit: 80 K Pick-up Ass'y: 150 K
Slide 59
6.1 Maintenance > Service PM
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6.2 User PM
Slide 60
6.2 Maintenance > User PM
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Toner Cartridge
Important notes: Keep the cartridge in the package until you are ready to use it. Do not refill the toner cartridge. Store toner cartridges in the same environment as the machine. Do not expose the cartridge to light for more than a few minutes. The following procedure lets you save toner: Press the cancel button on the operation panel for about 0.5 second. The toner save function is enabled when the button lights.
Slide 61
6.2 Maintenance > User PM
More on Toner Cartridge The toner save button function extends the life of the toner cartridge as well as reducing the cost per page. However print quality is also reduced when you enable this function. Some users are concerned about image quality. For this reason you should let the user know about this effect.
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Redistributing Toner
Images can fade or light areas can show if the toner is low. Redistributing the toner can temporarily solve this.
Slide 62
6.2 Maintenance > User PM
Operating Instructions, Section 5 More on Redistributing Toner Redistributing the toner is not a permanent solution. Let the user know that this 'could' temporarily solve the problem, and that they should replace the toner cartridge as soon as possible. Replace the toner cartridge if the above procedure does not solve the problem.
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Cleaning the Printer
The machine should be cleaned each time you replace the toner cartridge, or, if there are problems with print quality. Do the following: Clean the outside of the machine Clean the inside of the printer Clean the scan unit
Slide 63
6.2 Maintenance > User PM
Operating Instructions, Section 5
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Cleaning Sheet
The machine can be set to print out a cleaning sheet automatically every 500 print pages. You should print a cleaning sheet under the following conditions. If you use inferior quality paper If you are experiencing blurred, faded,or smeared printouts.
Slide 64
6.2 Maintenance > User PM
Operating Instructions, Section 5 More on the Cleaning Sheet Let the customer know the following. They should print a cleaning sheet if they experience the conditions shown on the slide. Low quality paper can affect image quality. The cleaning sheet contains toner dust particles. Discard this sheet immediately after use.
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Configuration Pages
The configuration page lets you examine/do the following: Printer settings Troubleshoot machine problems Verify installation of optional accessories (memory, languages, etc) A network configuration sheet also gets printed if the machine has a network card. Print and examine the configuration page.
Slide 65
6.2 Maintenance > User PM
Operating Instructions, Section 5
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7. Replacements and Adjustments
Slide 66
7. Replacements and Adjustments
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Overview
This chapter will include practical work assignments. Make sure you read the precautions in Section 3.1 of the Service Manual before you do the replacement procedures. Otherwise you can damage the machine. Work through all the assignments in the order that they are presented in the training module. The procedure to reassemble the fusing unit is complicated. Full details will be provided for this procedure.
Slide 67
7. Replacements and Adjustments
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Practical Assignment 1
Do the replacement procedures for the following parts: Covers Exit roller Engine shield Exit board SMPS Note that some of the screws to removed are located on the inside of the machine
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7. Replacements and Adjustments
Service Manual, Section 3.2 to 3.5
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Fusing Unit
The procedure to reassemble the fusing unit is a bit complicated. The stripper pawls must be put in the correct position before you can reassemble the fusing unit. Stripper pawls (red circles) and stripper pawl heads (red arrows) must be set as shown below.
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7. Replacements and Adjustments
More on Reassembling the Fusing Unit The most important thing to note when you reassemble the fusing unit, is the position of the 4 stripper pawls. The stripper pawls must be put back to their original position when you reassemble the fusing unit. The machine will still work if the stripper pawls are not put back in their correct positions. However the print quality will be severely affected. There is a procedure to do this. 1. Remove the stripper pawls from the stripper pawl slots. 2. Put the top part of the fusing unit and the bottom part of the fusing unit together again. 3. Set the stripper pawls into the stripper pawls holder slots and snap them into the slots. 4. Make sure the stripper pawl heads sit as they are shown in the slide. 5. Finally, reassemble the rest of the fusing unit.
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Incorrect Position
This shows the stripper pawls in the incorrect position. Note how the stripper pawls (red circles) and stripper pawl heads (red arrows) are not sitting in their correct position.
Slide 70
7. Replacements and Adjustments
More on Incorrect Position Compare this slide to the previous slide and note the positions of the stripper pawls and the stripper pawl heads. The difference should be obvious.
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Practical Assignment 2
This assignment will cover the fusing unit only. Do the replacement procedures for the following parts: Fusing unit assembly Thermostat Fusing lamp Stripper pawls Thermistor
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7. Replacements and Adjustments
Service Manual, Section 3.6.1 to 3.6.5
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Practical Assignment 3
Do the replacement procedures for the following parts: Fan Laser Scanning unit Drive unit Transfer unit Bypass tray unit and feed roller Pick-up Assembly and Solenoid
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7. Replacements and Adjustments
Service Manual, Section 3.7 to 3.12
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8. Troubleshooting
Slide 73
8. Troubleshooting
No additional notes
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Overview
The user can do most of the troubleshooting procedures for this machine. However you should also know how to troubleshoot this machine in case you are asked to do so in the future.
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8. Troubleshooting
No additional notes
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Paper Path
Examine the paper path. You need to understand the paper path to know where paper jams can occur in the machine.
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8. Troubleshooting
No additional notes
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Jam0
Jam0 occurs in the paper feed unit or in the bypass feed unit. In other words this is an error in the paper feed areas. The fed paper passes the paper feed sensor. Jam0 occurs if the sensor is not operated within a certain time.
EXIT Sensor
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8. Troubleshooting
No additional notes
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Jam1
Jam1 occurs around the fusing unit and toner cartridge areas of the machine. The paper moves to the paper exit sensor after it passes the paper feed sensor. Jam1 occurs if the sensor is not operated within a certain time.
EXIT Sensor
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8. Troubleshooting
No additional notes
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Jam2
Jam2 occurs around paper exit area. The paper then passes through the paper exit sensor and out of the machine. Jam2 occurs if the trailing edge of the paper does not pass the exit sensor within a certain time of the paper leading edge activating the exit sensor.
EXIT Sensor
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8. Troubleshooting
No additional notes
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Clearing Paper Jams
Paper can get jammed under the following the conditions. The tray is loaded incorrectly or overfilled The tray has been pulled out during a print job The front cover has been opened during a print job. Incorrect paper has been used. Practice clearing the various paper jams.
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8. Troubleshooting
More on Clearing Paper Jams Paper jams will be the most common problem for the user. It is important for the user to know how to correctly clear paper jams when they occur. Explain the paper jam types to the user. In addition go over the techniques to clear paper jams in the operating instructions with the use and let them practice removing them if they are eager to do so. Technically you will not be able to do the practical assignment as there will not be any paper jammed in the machine. However you can go to the jam location and simulate the jammed paper removal procedure. Explain the following to the user The On Line/Error LED on the control panel lights red if a paper jam occurs. Find and remove the jammed paper. Look inside the printer if no paper visible. Do not use tweezers or other sharp metal tools to remove jammed paper. Make sure you remove all paper fragments from the machine if the paper tears when you remove it from the machine. Otherwise a jam will occur again.
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Tips to Avoid Paper Jams 1
Make sure that the adjustable guides are positioned correctly. Do not overload the tray. Ensure that the paper is below the paper capacity mark on the right inside of the tray. Do not remove the paper from the tray at the time the machine prints. Flex, fan and straighten the paper before you load it to the paper feed unit.
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8. Troubleshooting
No additional notes
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Tips to Avoid Paper Jams 2
Do not use creased, damp or highly curled paper. Do not mix paper types. Use only recommended print media. Ensure that the recommended print side is facing down when you load paper to the input tray.
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8. Troubleshooting
No additional notes
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Report Sheets
Sample Pattern: The sample pattern lets you maintain and check the machine for abnormal conditions. Demo/Configuration Sheet: The demo page and configuration sheet lets you check if the machine operates correctly. Cleaning Sheet: You should print a cleaning sheet if printed images are blurred, faded or smeared.
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8. Troubleshooting
Service Manual, Section 4.3
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Operation Panel Display
Examine the table below. This shows the LED flash combinations that appear on the operation panel when an error occurs.
Error
Open fusing unit error Overheat error Low heat error
LED Status
The [Error] LED (red) and the [Toner Save] LED flash simultaneously at 1 second intervals. The [Error] LED (orange) and the [Toner Save] LED flash simultaneously at 1 second intervals. The [Error] LED (red) and the [Toner Save] LED flash simultaneously at 4 second intervals.
LSU not ready error (polygon The [Error] LED (green) and the [Toner Save] LED flash simultaneously at motor error) 1 second intervals. LSU not ready error (HSYNC The machine stops printing and the [Error] LED (green) and the [Toner error) Save] LED flash simultaneously at 4 second intervals.
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8. Troubleshooting
No additional notes
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Common Problems
The service manual has tables to help you solve all kinds of problems with: Printout: Section 4.6.1 to 4.6.17 Paper Feed: Section 4.7.1 to 4.7.7 Machine Malfunctions: Section 4.8.1 to 4.8.10 Software/ Network: Section 4.10.1 to 4.10.4
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8. Troubleshooting
No additional notes
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Toner Cartridge Error Messages
The following table shows error messages that can be displayed on the machine.
LED Pattern Online/Error LED lights orange Online/Error LED blinks orange Online/Error LED blinks orange and red alternately Problem Description Toner cartridge near the end of its life Toner cartridge is empty Installed cartridge is not designed for this machine Solution Replace cartridge or redistribute toner Replace cartridge Replace cartridge
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8. Troubleshooting
No additional notes
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Firmware Upgrade
There are 2 ways to upgrade the machine firmware: Command Prompt EWS (Embedded Web Server) Print out the configuration page before attempting to upgrade the firmware The loss of data and settings is very rare, but a backup is recommended
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8. Troubleshooting
No additional notes
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Command Prompt
You can only use one of the following operating systems for this type of upgrade: Windows NT Windows 2000 Windows XP Connect the machine to a PC with a parallel cable Open a command prompt and enter: Copy /b Filename lpt1 The firmware will automatically be upgraded
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8. Troubleshooting
No additional notes
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EWS
Open EWS Select Maintenance Upgrade Firmware
Select Browse and select the firmware file Select the Update Printer Firmware button
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8. Troubleshooting
No additional notes
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Recovery Procedure
The machine will not operate if the update procedure did not work correctly. At this time, do the following steps: Turn the power off and then on Do the steps in the download procedure The machine will start the upgrade again
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8. Troubleshooting
No additional notes
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Aficio BP20/ BP20N (G144)
END
Slide 90
No additional notes
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