ERRORS
TROUBLESHOOTING
Recommended error-handling routine after an error occurs
Part 1
PREFACE
To avoid basic causes of screen errors, always follow the installation requirements:
– The machines should be used in places with a relative humidity of 30 to 75% and an ambient temperature of 18 to 30 ° C. Otherwise, use an air conditioning system.
– Do not install the machine in a very dusty or highly vibrating place.
– Do not raise or lower the room temperature suddenly. If you do this, moisture in the air can condense on the machine, causing the laser guns to fog up, malfunctioning electronics and circuit boards, etc. D.
Please read the manual carefully before using the machine, and then handle the machine correctly.
Be sure to keep the Service Manual close to the machine so that you can refer to it straight away if you have any operational questions or problems.
If you have no guides, feel free to send us a request and we will provide you with one shortly.
Ground the machine to ground resistance of fewer than 4 Ohms.
Due to the many different screen errors that can appear during the laboratory laser process or setup procedures, we will only explain a few common errors for your quick reference and corrective action:
Seek professional help to complete the steps necessary to determine the cause of the error.
W-2527 G laser (G-SHG) current exceeds the specified range
W-2528 B laser (B-SHG) current exceeds the specified range.
E-2524 G laser (G-SHG) current measurement value outside specified range
E-2525 B laser (B-SHG) current measurement value outside specified range
Feature of the problem: pop-up error or warning message.
Model: Any Fujifilm Frontier Lab
Likely cause 1: poor contact
Likely Cause 2: Faulty LDD20 PCB
Likely cause 3: worn-out laser module
1. Replace the LDD20 board and see the result.
2. Try to reconnect all cables around the laser device. Sometimes this message can be caused by bad contact.
3. But the most likely cause is the condition of the laser diode (LD):
The current has reached the so-called “impaired detection level”.
This shows that the LD is not in good condition (damaged).
Perform “B-Laser Optimal Temperature Adjustment” – sometimes this can postpone the problem for a while.
If you have the “B-laser optimal temperature setting – NG” – the laser module needs to be repaired.
Note to all minilablaser.com clients:
Our SLD modules for Fujifilm Frontier do not require temperature optimization. So there is no need to perform this on regular basis.
Resume: Laser repair is required.
E-2521 Excessive G laser (G-SHG) current detected.
E-2522 Excessive B laser (B-SHG) current detected.
Feature of the problem: an error message appeared.
Affects different Frontier models with different error code names.
Probable cause:
1. The laser diode (LD) current has reached its limit. The laser module has reached the end of its service life.
2. Laser temperature is out of working range.
First of all, optimize the temperature of the laser module.
You may have to do this several times.
If this action does not help, the following are the causes of the problem:
– Faulty LDD board
– Blown fuse (FC01, FC02, or FC03) of LDD circuit board
– Incorrect data in the laser unit
– Faulty laser unit (Green laser module).
There are no end-user-serviceable parts inside.
Any unprofessional tampering may damage the internal contents and the laser module cannot be repaired.
The only way to make the module work is to send it to us for repair (upgrade).
Send us a request to receive a high-quality repair or a new module.
Resume: Laser repair is required if laser module temperature optimization does not help.
DIODE
LASER MODULES
W-2532. G laser (G-SHG) optimal temperature setting periods.
Feature of the problem: a warning message appeared.
Possible Cause 1: Three months have passed since the last setting of the optimum temperature.
Possible Cause 2: 30 days have passed since the date of shipment.
Perform “Optimal Laser Temperature G, B (SHG)”
NOTE. Start this menu two hours after turning on the LD.
This allows sufficient time for the laser to warm up.
Resume: Laser repair is NOT required.
No error code but the lines are on each print.
The Feature of the issue: Lots of colored lines on the prints.
Models: all Fujifilm Frontier.
Probable Cause: the red laser is out of order.
If you have pictures with such red-blue stripes it means that emission of the RED laser is weak and it affects synchronization.
Resume: Laser repair is required.
E-2503 Polygon malfunction
Specific problem: error E-2503 is generated.
Models: All Fujifilm Frontier Series.
Probable cause:
1. The polygon is out of order.
The polygon unit located in the laser unit must be repaired or replaced with a new one. The polygon can fail due to a number of different reasons: defective motor, lack of power, etc. Please do not touch the inside of the laser device. There is no end user-serviceable parts inside. Such a malfunction of the laser device requires qualified repair.
Contact us if you need a repair of a polygonal block with a guarantee.
2. LDD23 P.C.B. does not work.
Please check the condition of the LDD23 board before sending the laser device for repair. Contact us if you need a new PCB for your laboratory. It will be delivered to your office directly from Japan.
Resume: Laser repair is required if the LDD23 circuit board is in working condition.
E-2529 “S.O.S. detection failed”
E-06073-0001 “Synchronous Sensor Error”
The error code E-2529 “S.O.S. detection failed” on a Fujifilm Frontier digital minilab indicates that the machine cannot detect the “Start of Scan” (S.O.S.) signal, which is critical for synchronizing the laser exposure process. This error typically points to an issue in the laser or optical system. Based on common troubleshooting knowledge for Fujifilm Frontier minilabs, here are the potential causes:
Possible Causes of E-2529 “S.O.S. Detection Failed”
Faulty Polygon Mirror or Polygon Unit
The polygon mirror, located in the laser unit, reflects the laser beam to scan the paper. If its motor is defective, lacks power, or has failed, the S.O.S. signal won’t be detected.
Why? A malfunctioning polygon disrupts the timing of the laser scan, leading to sync failure.
Defective LDD Board (e.g., LDD23 or LDD20)
The Laser Diode Driver (LDD) board controls the laser output. If it’s malfunctioning, it may not send the proper signal to initiate the scan.
Why? The LDD board is responsible for powering and modulating the laser, so a failure here can halt S.O.S. detection.
AOM Driver Issues
The Acousto-Optic Modulator (AOM) driver regulates the laser beam’s intensity. A faulty AOM driver (specific to a color channel, like red, green, or blue) can disrupt the signal chain.
Note: For some Frontier models (e.g., LP5500/LP5700), an AOM driver failure isn’t typically the direct cause of E-2529, but swapping cables between drivers can help diagnose if one is affecting output.
Laser Module Degradation
If the laser diode (LD) itself is worn out or damaged (e.g., reaching its current limit), it may not emit a strong enough beam for the S.O.S. sensor to detect.
Why? Over time, laser diodes degrade, reducing their output and affecting synchronization.
Poor Cable Connections
Loose, damaged, or improperly connected cables (e.g., between the laser unit, AOM drivers, or LDD board) can interrupt the signal path.
Examples: OPT3 on the laser unit, FMC4 on the FMC20 board, or coaxial cables to the AOM driver.
Power Supply Unit (PSU) Failure
If the PSU isn’t delivering the required voltage (e.g., 24V to the AOM driver), components may fail to operate, triggering E-2529.
Why? Insufficient power can prevent the AOM or laser from entering operational mode.
Optical Blockages or Dirt
Dust or debris on the laser’s dust-proof glass, or a physical obstruction (e.g., a piece of paper or damaged shutter foam), can block the beam, preventing S.O.S. detection.
Why? The S.O.S. sensor relies on an unobstructed laser path.
Corrupted Optical Parameters
Settings like “Scanning Position Detection Interval” or “Scanning Position Detection Level” in the service menu might be incorrect or corrupted, causing the system to misread the S.O.S. signal.
Diagnostic Steps
Check Connections: Inspect and reconnect all cables around the laser unit and AOM drivers (top and bottom cables, crossed correctly if swapping).
Swap AOM Drivers: Test by swapping red and green AOM driver cables. If the error clears but colors are off (e.g., no magenta), the R-AOM driver might be faulty.
Inspect the Polygon: Listen for unusual noises from the laser unit (a silent or grinding polygon suggests failure). This requires professional repair.
Test Power Supply: Measure the PSU output to ensure it’s delivering stable voltage.
Clean Optics: Check the laser glass and shutter for dirt or blockages.
Service Menu: Review laser data (e.g., “G Laser Data” or “Laser Output Check”) to assess the laser module’s condition.
Likely Culprit
The most common causes, based on Frontier repair patterns, are a failing polygon unit or a faulty LDD board. However, start with simpler checks like cables and optics before assuming hardware failure, as these are easier to fix.
Resume: Laser repair is required (if AOM driver and other components work well).
E-2519 “AOM temperature error occurred” + E-2529 “S.O.S. detection failed”
Model: Any Frontier minilab.
Feature of the problem: an error message appeared.
Possible Cause: No required voltage. PSU is defective.
if you have such a set of errors at one time, it means that there is probably no power (24V) going to the AOM driver and because of this the AOM driver cannot enter the operating mode and as a result the system issues E-Error 2529 ” SOS detection error “
Corrective measures: check the power supply unit (PSU).
Resume: Laser repair is NOT required.
No error code but Setup test print is without yellow color
Specifics of the problem: Yellow is not visible on prints.
Likely Cause: The blue channel AOM driver is defective.
You can get such an image during print setup without any error on the screen.
Corrective Action:
First of all – try swapping the AOM drivers and find out which one is faulty. If you have a similar test print without blue or magenta stripes, do the same with the AOM drivers.
This way you will determine which one is faulty.
How to swap AOM drivers – read here .
Resume: Laser repair is not required.
W-2538 Anti-dust filter of laser unit is about to its lifetime.
E-LP-2539 Anti-dust filter of laser unit is about to its periodic replacing time
Possible reason. The dustproof glass is dirty.
Corrective action:
Wipe the laser dust glass from back to front using a clean, soft cloth.
IMPORTANT:
* You can wipe it from front to back. But, if you wipe it multiple times, be sure to wipe in the same direction. If it is wiped back and forth, the removed dirt may return to the glass surface.
* Do not use liquids containing alcohol for cleaning.
This may adversely affect printing.
Use clean water.
Do not press down on the fabric while cleaning!
See the Service Manual for Detailed Procedures.
If you don’t have it, click here .
Resume: Laser repair is not required.
pic.1
W-2541 Periodic time to set the optimal temperatures of B laser (SHG)
Feature of the problem: a warning message appeared.
The same error you can see regarding the green laser.
Nothing to worry about.
Corrective action: Perform optimal laser temperature G, B (SHG)
in menu 0522 to set the optimum temperature for laser B.
Do the following:
1. Setting up and maintenance -> Setting up / maintaining the printer -> Setting the optimal temperature for laser G, B (SHG).
2. Find B-SHG and press the RUN button.
3. Wait until the end of the temperature optimization.
4. Exit the menu and continue printing.
Resume: Laser repair is not required.
No error code but Setup test has no black color
Model: All Frontier Laboratories.
The peculiarity of the room: black is not black, but a little bluish.
Probable cause 1. Weak or contaminated chemicals.
Probable cause 2: Incorrect replenishment process.
Probable Cause 3: Faulty valve in the refill pump (or pump).
Probable cause 4: Faulty AOM driver.
Probable cause 5: faulty AOM (crystal)
Possible Cause 6: Incorrect top-up process.
If a change in black color appeared within 2-3 days – the most likely reason that the replenishment procedures were performed incorrectly.
Possible cause 7: The valve in the refill pump (or pump) is faulty.
If it took longer to detect, the likely cause is a faulty valve in the booster pump or the pump itself.
Check this.
How to check chemicals:
Please expose the paper in daylight (take out 10-15cm of paper from the paper store, wait 5 seconds and pull back)
Place the paper magazine in the lab and start the paper feed.
See the result.
If you have a black piece of paper:
Possible Cause: Faulty AOM driver.
– the reason is not in the chemicals, but in a faulty AOM driver or AOM crystal.
See the article above on how to determine which AOM driver is faulty.
If you have a 2-channel AOM driver:
Swap all the wires of the blue channel with all the wires of the green channel, make a test, and see the result.
If you have a 1-channel AOM driver:
Replace it with another / next AOM driver and print the test.
If the color of the test changes, the AOM driver is faulty.
If there are no changes, you have a more serious problem:
Possible cause: faulty AOM (crystal).
– Defective AOM crystal located inside the laser unit.
In this case, you will not be able to repair it yourself.
If you have a sheet of paper that is not black, but blue:
– the chemicals are weak or contaminated.
Possible Cause: Weak or contaminated chemicals.
Causes:
– dirty P1 – replace chemicals (working tank P1)
– low temperature – search for the cause (burned-out heating element, loss of values in the software, etc.)
– low refill rate (check all refill pumps)
– low circulation in working containers (check all circulation pumps and filters for clogging).
In other words, replace the chemical (working containers only) and find the reason for its weakness.
How to replace solutions: read above, please.
If the black is still not black but bluish, even if you find that all AOM drivers are in working order and all chemicals have recently been changed, it’s time to ask us.
Send us a request with a printout of your condition settings scanned at 600 dpi.
Don’t forget to add print screens:
Laser data B
G-laser data
R-laser data
Checking laser exposure
Laser history (last table)
Resume: Laser repair is required if the chemicals and AOM drivers are in normal condition.
PLEASE SEE MORE INFORMATION ON PAGE 2