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BJC-5000 printer Service Manual

CONTENT

Part 1: Safety and Precautions
1. SAFETY PRECAUTIONS
1.1 Moving Parts
1.2 Ink Stains
1.2.1 Ink path
1.2.2 Ink mist
1.3 BJ Cartridge Heat-Up
2. MACHINE PRECAUTIONS
2.1 Handling BJ Cartridges
2.1.1 Unpacking the BJ cartridge
2.1.2 Preventing clogged nozzles
2.1.3 Power on/off
2.1.4 When not using the printer
2.1.5 Ink electroconductivity
2.2 Handling Ink Cartridges (Color BJ Cartridge)
2.2.1 Unpacking the ink cartridge
2.2.2 Protecting the ink cartridge
2.3 Printer Precautions
2.3.1 Preventing deformation of the spur tip
2.3.2 Static electricity damage prevention
2.3.3 Ink leakage prevention
3. MAINTENANCE SERVICE PRECAUTIONS
3.1 EEPROM Data Precautions
3.2 Static Electricity Precautions
3.3 Disassembly and Assembly Precautions
3.4 Built-In Self-Diagnosis

Part 2: Product Specifications
1. PRODUCT OUTLINE
1.1 Product Outline
1.2 Features
1.3 BJ Cartridge
1.3.1 Color BJ cartridge (BC-21e)
1.3.2 Black BJ cartridge (BC-23)
1.3.3 Black BJ cartridge (BC-20) (reference)
1.3.4 Photo BJ cartridge (BC-22e Photo)
1.4 Dual Cartridge System
1.5 BJ Cartridge Container
1.6 Consumables
1.6.1 BJ cartridge (Black, Color, Photo)
1.6.2 Ink cartridge (BC-21e Color BJ Cartridge only)
2. SPECIFICATIONS
2.1 Printer Specifications
2.2 Paper Specifications
2.2.1 Paper size
2.2.2 Paper type
2.2.3 Cut sheet feeder sheet loading capacity
2.2.4 Printing area
2.3 Interface Specifications

Part 3: Operating Instructions
1. PRINTER SETUP
1.1 Unpacking and Inspection
1.2 Site Selection
1.3 Setup Procedure
1.3.1 Connecting the interface cable
1.3.2 Connecting the AC power cord
1.3.3 Turning on the printer
1.3.4 Installing the BJ cartridge
1.3.5 Replacing the ink cartridge
1.3.6 BJ cartridge container
1.4 Turning the Printer On/Off
1.4.1 Turning the printer on
1.4.2 Turning the printer off
1.5 Paper Settings
1.6 Banner Print
1.7 Names of Parts and Their Functions
2. TRANSPORTING THE PRINTER
2.1 Carrying the Printer
2.2 Transporting the Printer
3. PRINTER SERVICING FUNCTION
3.1 Error Indications
3.2 Cleaning the BJ Cartridge
3.3 Self-Test Printout
3.4 Service Mode
3.5 Service Mode Print Sample
3.5.1 Ripple pattern
3.5.2 Service information printing

Part 4: Technical Reference
1. OVERVIEW
1.1 Printer Block Diagram
1.2 Initialization Sequence Flowchart
1.3 Print Signal Flow
1.3.1 Data between host computer and printer
1.3.2 Print signal flow in the printer
1.4 Print Drive
1.4.1 Print drive control
1.5 Power-Off Sequence Flowchart
2. FIRMWARE
2.1 Interface
2.1.1 Compatible mode
2.1.2 Nibble mode
2.1.3 ECP mode
2.2 Printing System
2.3 Printing Modes
2.3.1 Printing mode
2.3.2 Photo print mode
2.3.3 Multi-drop print mode
2.4 Cartridge Automatic Adjustment Function
2.4.1 Automatic correction of head nozzle alignment
2.4.2 Automatic density correction of left/right cartridge
2.5 Data Separation Function
2.6 Ink Smear Control
2.7 Head Overheating Protection Control
2.8 Auto Power-Off
3. PRINTER MECHANICAL SYSTEM
3.1 Overview
3.1.1 Mechanical components
3.2 BJ Cartridge
3.2.1 Black BJ cartridge structure
3.2.2 Color BJ cartridge structure
3.2.3 Photo BJ cartridge structure
3.2.4 Bubble head unit structure
3.3 Purge Unit
3.3.1 Purge unit functions
3.3.2 Purge unit structure
3.4 Carriage
3.4.1 Carriage function
3.4.2 Carriage structure
3.5 Paper Feed/Cut Sheet Feeder
3.5.1 Paper feed/cut sheet feeder function
3.5.2 Sheet feeder structure
4. PRINTER ELECTRICAL SYSTEM
4.1 Overview of Printer Electrical System
4.2 Logic Section
4.2.1 Logic section block diagram
4.2.2 Logic section components
5. SENSOR FUNCTIONS
5.1 Pick-Up Roller Sensor
5.2 Paper End Sensor
5.3 Home Position Sensor
5.4 Purge Sensor
5.5 Cover Open Sensor
5.6 Printer Temperature Sensor
5.7 Head Temperature Sensor
5.8 Auto-Alignment Sensor
5.9 Waste Ink Amount Detection

Part 5: Maintenance
1. Maintenance
1.1 Parts for Regular Replacement
1.2 Consumables
1.3 Periodic Maintenance
2. SERVICE TOOLS
2.1 List of Tools
3. GREASE APPLICATION
4. DISASSEMBLY AND REASSEMBLY
4.1 Disassembly and Reassembly
4.2 Disassembly and Reassembly Cautions
4.2.1 Fastening screws of idler pulley assembly
4.2.2 Carriage guide frame installation
4.2.3 Unlocking the carriage lock
4.3 Logic Board and Waste Ink Absorber Replacement Cautions
4.3.1 Logic board replacement cautions
4.3.2 Cautions after replacing the waste ink absorber
5. ADJUSTMENTS
5.1 Adjustment Point
5.2 When Adjustment is Required
5.2.1 Tools required for adjustment
5.3 Adjustment Procedure
5.3.1 Preparation
5.3.2 Adjustment
6. TROUBLESHOOTING
6.1 Troubleshooting
6.1.1 Overview
6.1.2 Troubleshooting cautions
6.2 Error Condition Diagnostics
6.2.1 Diagnostic flowcharts
6.2.2 Error recovery
7. LOCATION AND SIGNAL ASSIGNMENT
7.1 Logic Board
8. CIRCUIT DIAGRAMS
8.1 Parts Layout
8.1.1 Logic board
8.2 Circuit Diagrams

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We are in business since 2002 and do our best to give our customers perfect service!

Timothy Johnson	2025-05-01 04:00:40
I am so sorry for the bad review 8 gave. I jumped on too soon. I totally retract all of my statements. The key worked perfect. It was totally worth it. I will use this service again when needed. Again I am really, really sorry.

Rita Nobs	2017-03-05 21:42:54
Hey thanks a lot! Worked perfectly on Epson SX405. Got a free reset to 90% just to check if it works and it worked great! Finished printing all needed doucments! Gonna get a key now! Thanks again!

Oliver Kaufmann	2024-11-07 18:46:09
download easy wonderfull tutorial videos connection via usb cable first try with "trial" -_ excellent final try with bought key will never buy an epson again...

john Liang

2018-08-16 18:24:01

I took a gamble last week by buying a Epson Pro 4900 for less than $140 thinking if I could not get it going, I can at least take the remaining ink out of the cartridge and use it on my other printers. The initial nozzle test was not so bad for a printer that was unused for about 1 year, I got six Nozzles firing at around 90% not bad, the next thing I did was the popular Windex treatment, I ran 4 sessions of Windex treatment on the printhead, first one lasted 1 hour, second one lasted 2 hours and third one lasted 4 hours and the last one lasted 8 hours, I got a fully soaked paper towel in my last two treatments, I ran a series of power clean on the non firing nozzles but the Green nozzle remain clogged. At this stage I thought this program may be my last chance to rescue this printer. I bought the program at 6 pm today, I ran the CL1 clean on OR/GR channel and the green nozzle remain clogged, I then ran the CL2 clean on the same nozzles and the same result, at this point I thought maybe this printer is completely dead but I will give CL3 a shot, I went for dinner when CL3 clean was performed on the printer. I came back immediately printed the nozzle check I got the perfect Nozzle pattern on almost every single colour nozzle except Cyan which has a few bar missing, a quick CL1 clean on Cyan/Magenta fix that. The next thing I did was to run a quick paper profile on this printer with X-rite software, I printed two test pattern page to calibrate the printer, then come the first real print on my Epson Stylus Pro 4900 it was absolutely brilliant, the best printer I have ever own and the IQ on one of the cheapest glossy media I could find was simply breath taking. I have to say without this software my $140 purchase would probably end up in the rubbish dump. I must say I was skeptical about the truthfulness of the success that other has with this software but with myself actually tried this software, I have no reservation but to recommend that anyone who has a clogged Epson Pro 4900 to give this program a shot it may just save your printer. On the scale of 10 I would probably give it a 11 and it is more than just good!

Giles Haig	2025-03-31 23:53:19
I love this service. Have purchased a WIC reset key maybe 10 times in last 7 years. Has always worked very well and saved ny printer each time. Happy UK customer.

Galina Pas	2024-01-29 10:49:21
Изключително съм доволна, за една минута се възстанови всичко. Много благодаря !