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Refurbished equipment is subject to strict testing procedures to

ensure system performance and repeatability. All worn parts are replaced, and the machine is

cleaned and painted. All parts are tested and verified for functionality. Voltages are then

checked at the drivers and throughout the system. The machine is then completely calibrated.

Special attention is given to the print head and the vision system calibrations. The system is then

put through extensive burn-in and diagnostic tests.


Demo mode –

The machine is put though a print cycle simulation for (4) hours. The test moves all axis at an

accelerated speed. This checks the integrity of the motors, drivers, and software limits. Voltages

are then re-checked for signs of motor or driver deterioration.



A diagnostic test is a special program separate from the machine software. This test is a

fully automated data collection and analysis program. The first part of the test checks the vision

system’s ability to locate trained targets on the board and stencil. Each axis is then tested for

backlash and repeatability. By examining the test results in raw data and graphical form, we can

ensure the capability of the machine.

Prior to shipping, a minimum of 40 boards are run in print mode. Each board is inspected

for paste height and repeatability. This final verification ensures the machine is ready for the

production environment.

The six sigma theory of machine capability states that, in order for a machine or a process

to have six sigma capability, the machine must be repeatable to twice the process specification

limit. The capability index used to track this number is Cp. Therefore, in order for a machine or

process to have six sigma capability it must have a Cp of 2 or greater.

The goal of our stringent refurbish process is to provide used equipment with this capability to the electronics

manufacturing community.

Below is an example of our sign off sheets attached to each finished product.




1. 24 VDC ___________

2. 12 VDC ___________

3. 120 VAC ___________

4. TV 1 ___________

5. TV 2 ___________

The following axis have been calibrated and inspected for functionality:

1. X AXIS ___________

2. Y AXIS ___________

3. Z AXIS ___________

4. THETA AXIS ___________

5. VISION Y AXIS ___________

6. VISION X AXIS ___________


8. SQUEEGEE UP/DOWN AXIS ___________

9. STENCIL WIPER ___________

10. DISPENSER ___________


All Systems meet or exceed manufactures specifications - denote any deviation below







Customer / Job:___________________________________

Technician Name: ________________________________

Technician Signature: _____________________________

Technical Manager Signature: _______________________