Failures

Detection & Analysis

Treatments

  Laser lost when the machine is on

1.First, test at the light outlet portal  whether the laser diode is producing laser

The lens is broken or the light route is leaning.

2.If no light at the exit, check whether the circulatory water system is working correctly (the water flow is smooth or not)  even no water flow

Clean water pump and dredge the water pipe.

3. If the circulatory water system is working correctly, check whether the indicator of laser power supply is on and whether the fan of power supply is rotating. If it isn’t rotating,

Broken laser power supply , replace

4. Press the spot spray button of the laser power supply, if there is no light

Laser power supply failure or laser diode failure

5. If there is spot spray light

Broken water protector, replace

6.No light even short connect the water protection signal wire

Broken main board or wiring board, replace

No response when turn on the machine

1. Check whether the LED panel or the daylight lamp is on, if not

Check the fuse of the feed system or of the major power supply

2.If yes, check the parameters of the main board, if the parameters are wrong

Input the right parameters

3. No wrong parameters but still no action

Main board or drivers failure

Shallow scanning

1. Check the optical intensity and speed and water temperature. If the speed is too fast, the optical intensity is not enough, and the water temperature is too high

Enhance the optical intensity, slow down the speed and replace the circulatory water

2. Check if the depth of edge engraving is correct, if yes

Uplift the resolution ratio or scan precision

3.Shallow or uneven edge engraving

Miry/broken lens or leaning light route

4. Check the current with ampere meter: if the current reaches 20MA but the depth is still not enough

Aging laser diode, replace

Intermittent laser

1. Whether the lens is miry or broken or the light route is seriously leaning

Clean or replace the lens and adjust the light route

2. Clean lens and correct light route, check whether the water circulation is working correctly, if discontinuous water flow

Clean or replace water pump and dredge the water pipe

3. If the water circulation is correct, the water protector may be problematic

Replace the water protector

4.If problem remains, the main board, the laser power supply, and the laser diode malfunctioning may also cause this trouble

Replace these parts separately to find out the cause

Wrong output size

1.       Check whether the PLT output unit of the plotter in Coredraw9 is 1000

If not, change the plotter unit to 1000

2. Check whether the resolution ratio is correct

Recalculate the resolution ratio

Mal-reset

1. When reset, the direction is correct but the slipper and the beam don’t stop at the top (if it’s new machine, check whether the parameters are correct, if yes)

Main board / sensor failure, replace

2. The beam is correctly reset, but the slipper doesn’t move, check whether the tension wheel is tight or the axis of the motor is broken, or the parameters are wrong

Replace the tension wheel/ motor and modify the parameters

3. When YM machine reset, the slipper and the beam countermove and impact on the side edge

Wrong main board parameters, stop the machine and modify the parameters

4. When YM machine doesn’t reset, check whether there is defective connection or open circuit between the 18 chip data cable and the small panel

Re-insert or replace the data cable and small panel

Ceasing, slipping and disordered engraving 

1. Check the ground condition of the machine and whether the ground lead meets requirements (resistance to ground should be lower than 5W)

Modify the ground lead to meet relative requirements

2.Check whether screen protection or energy-saving mode (such as system sleep or hard disk turned off) is set on the computer (for high/low speed main board) 

Cancel the configuration and change into “Never”

3. Check whether there is any error such as overlap, non-closure or slipping, and other in original graphics

Correct the error

4.If there is no such error in other graphics except one

Fault graphics data processing, redo the impression drawing

5. Problem remains

May be caused by problematic serial port of computer or main board of engraver

Incomplete edge marking

1.       Check whether the beams are parallel. The deviation to left/right should be no more than 2MM

Adjust the beams to reduce the deviation

2. Check whether the belts for slipper and beams are in proper tension and the belts on both sides are of the same tension.

Adjust the belts tension to decrease the difference

3. When the machine is on, push and pull the slipper and beams and move the slipper end slightly upward or downward to check where there is mechanical gap, if yes

Tighten the synchronizing wheel of the motor or the transit shaft and replace the slipping block

Offset cleaning or edge marking

1. Any graphics over-speed will cause offset

Slow down the speed

2. Zoom out the original graphics in output software to check whether there is any offset

correct the error in original graphics

2.       Try to make another one and check whether there is error only in a certain graphics, if there is no error

Wrong graphics data, redo impression drawing

4. Check whether the synchronizing belt is loose and the belts of at both side of the beams are of the same tension degree

Adjust the tension degree of the synchronizing belts

5. If there is gap between the motor and the synchronizing wheel of the transit shaft

Tighten the synchronizing wheel

6. Check whether the beams are parallel and if there is abrasion between the beam support and the slipper block

Adjust the parallel degree of the beams and replace the support or the slipping block

7. failure of the main board or of the drivers

Replace main board or drivers

Hackle-shaped Cleaning or edge marking

1. The speed is too fast

Slow down the speed

2. Check the resolution ratio of the graphics if the BMP bitmap format output is employed

maximize the resolution ratio with the precondition that there is no error about the graphics size

3. Whether the synchronizing belt for slipper and beams is too loose or too tight

Adjust the tension degree of the synchronizing belt

4. Check whether there is any gap in the X-direction tension wheel caused by abrasion

Replace the tension wheel

5. Check whether there is any gap in slipper end or slipping block when the machine is off

Replace the slipping block or tighten the slipper end

6.Check whether the four lens are broken or loose, especially whether the reflection mirror and the focusing mirror on the slipper end are firmly fixed

Tighten the loose lens or replace the broken lens

7. Check whether there is abrasion between the beam support and the support wheel

Replace the support or support wheel

Failure of Serial Port(or machine makes no response to continuous sending of message)

1.       Check whether the ground condition has met relative requirements (static will influence the data communication)

Modify the ground lead to meet relative requirements

2.       Check whether there is defective connection in each USB port

Process the plug or replace the cable

3.       Check whether the USB drive had been installed correctly and whether the serial port COM3 or COM4(for YM main board only and it can be COM5 or COM6 for CM main board) can be found in the system device manager

Reinstall USB drive

4. Whether the output port in Yueming software is consistent with the serial port generated in the computer

Modify the serial port configuration in Yueming software

5.The high voltage plug of the laser power supply is broken or there are problems with the laser power supply

Re-welding or replace the laser power supply

6 Whether there is problem with the USB port of the computer which can be tested with other USB devices

Change the USB port or test with another computer

7. Main board problems: there is some slight modification, particularly concerning the serial port failure, to the CM main boards after July, 2007. Concerning the modified main board, without power supply, the three indicators on the main board between the two 5V powers won’t be on if the computer is turned on and USB cable is connected; however, that of the unmodified will be on.

Replace the main board

Bad cleaning with thick

1. Check whether the foci is correct, especially after lens cleaning or replacement (caution: the focusing mirror here are of directivity)

Correct the foci value

2. Check whether there is any breakage or miry with the four lens (breakage or miry with lens will cause scattered beam)

Replace or clean lens

3. Check the beam spot quality at the exit of the laser diode, if there are two laser points, non-round laser point, circle, etc, it may be caused by non-proper support, direction, or the laser diode itself

Adjust the support, rotate to change the direction and replace the laser diode

Sparks in the laser out hole of the slipper

1.       If used in rubber plate industry, the impurity in plate may cause this trouble which should have no adverse effect

Need no treatment and superior rubber plate advised

2.       Check whether there is strong gas ejection from the white gas ejector pipe on the laser head for the long pipe can be easily folded, blocked or frazzled.

Clean or replace the white gas ejector pipe

3. Check whether there are troubles such as weak gas flow or no reaction with the air pump

Replace the air pump

Rapid temperature rise of circulatory water

1. The optical intensity of the laser is too high

Minimize the optical intensity on the precondition that the engraving depth requirements can be met

2. Over time continuous on the spot working

Half an hour intervals for every three continuous working are demanded

3.       Check whether the water circumfluence in the cooling water outflow pipe is working correctly,; whether the water flow is smooth; whether the latex tube in the machine is folded

Unfold the pipe to assure smooth water flow

4.       Check whether the water pump or the in/out water pipe are dirty or whether the water protector is blocked

Clear the water pump and pipes, replace the water protector

5. Check whether the water yield and the water pressure from the submerged pump are correct, if the water yield is too small

Change the water pump or the water chiller

Warning from water cooling system

1.       First, the normal user power supply system should be assured for low voltage will easily cause warning from water chiller

Assure normal voltage and regulator is advised if necessary

2.Check whether the water amount in it meets requirements, too low water amount will cause warning from water chiller

Fulfill it with pure water

2.       Check whether the water pipe is folded or blocked, or whether the water protector is blocked, all these problem will cause warning from water chiller

Clear and unfold the water pipe and water protector

4. Whether the water temperature is too high. Water temperature higher than limitation will cause warning from water chiller.

Change water frequently or turn off the machine for half an hour before successive engraving

5. Check whether the water yielding from water pump in the water chiller is correct. No water outflow or small water outflow will cause warning from water chiller

Replace water chiller

No view when turn on and no response when press buttons

1.       Turn on the machine again and check whether the beams and the slipper can reset correctly. If there is no motion, treat it according to the instruction of failure 2.

2.       Correct reset when turning on the machine: press the direction button and the function button on the panel to check whether it works correctly and all the buttons work.

Broken LED screen, replace

3.       If the buttons don’t work correctly and the direction buttons cause no response, the LED controller is problematic (LED indicating block uncertainty )

Replace the LED controller

4.       After replacement of LED controller: it indicates correctly but no response to button pressing, the button overlaid problematic

Replace the button overlaid

Fluctuate / uncontrollable current

1. Problems with main board or wiring panel

Replace the main board or the wiring panel

2. Problems with laser power supply

Replace laser power supply

Slipper or beam shaking when turn on

1.       For new YM machines, check whether the main board parameter of the Reset Detection Polarity” is correct

input into engraving machine with the right parameter

2.       After turning off the machine, move the slipper and the beams with hand, if evident resistance felt, check the tension wheel and the slipper block on the left side

Clean the lead rail and slipper block and replace the tension wheel

3.       Check whether the synchronizing belt and the blowpipe of the laser head is blocked or the beam has serious deviation

Adjust the beams and belts and unfold the blowpipe

4.       Check whether there is problem with the motor and the drivers

Replace the motor or the drivers

5.       Measure and check out whether the resistance value is correct if the machine is with resistor array, if it’s not correct

Replace the resistor array

6.       If the problem remains, there may be problem with the main board

Replace the main board

No action of the machine when direction sent from computer

1.       Whether the reset is correct when turn on, if not

Treat it according to the above steps of failure 6

2.       If it resets correctly, press adjusting key for auto-test, if it failed to auto-test

Problematic main board, replace

3.       The auto-test can be executed, check whether it is reliably grounded

Improve the ground to meet relative requirements

4.       Check whether the USB drive had been installed correctly and the virtual serial port had been correctly generated

Unload and reinstall the USB drive

5.       Whether the port setup of the output software and that of the virtual serial port generated are the same

The port setup of the output software and that of the virtual port generated should be the same

6.       If the problem remains, treat it according to trouble 11 serial port failure

Continuous laser when turn on

1.       For YM machine, check whether the LASER type in the main board parameter is correct

The laser type should be set as “Domestic Laser Diode”

2.       Problematic wiring panel or button panel

Replace wiring panel or button panel

3.       Problematic laser power supply

Replace laser power supply

4.       Problematic main board

Replace main board

High voltage spark when working

1.       Determine the position of high voltage spark first; if it’s the connection place between laser diode and the laser power high voltage, check whether the connector had been correctly placed or it is wet below the high voltage support

Lock the connector with the insulting support or dry the wet part with dryer

2.       Check whether the high voltage connector is firmly connected; whether there is defective connection or false welding

Assure good and firm connection

3.       If the position is in the laser power supply

Replace laser power supply

4.       Spark at the high voltage end of laser diode or spark remains after replacement of laser power

Replace laser diode

Uneven cleaning

1.       Check the lens and the light route

Clear lens and adjust light route

2.       Check graphics resolution ratio and scanning precision

Improve resolution ratio and scanning precision

3.       Aging laser diode or problematic laser power supply

Replace laser diode or laser power supply

Wave in straight line edge marking

1.       Loose reflection mirror or focusing mirror

Fix the slipper base or replace the slipping block

2.       Mechanical problems

Check and repair