Troubleshooting focus learn failures on a new installation


Machines affected		Lotem Quantum Lotem Quantum Spectrum Lotem 800 II

Error		`SYS> 03529 Failure of the focus learn`

Symptoms		During a new installation focus learn fails. System error 03529 may be displayed.

Cause		During a new installation focus learn fails. If the 3-phase power is not connected correctly, an incorrect sequence in the 3-phase power causes the drum's vacuum pump to blow air out instead of suck air in. This causes incorrect loading of the plate (for example, bubbles in different places) and the corresponding focus learn problems.

Solution		Manually check the vacuum holes in the drum to ensure the vacuum pump is working properly. Note: In the past, noise generated by the vacuum pump would indicate this problem, but not anymore. The new vacuum pumps do not make this noise so you must manually check the orifices.

See also		Troubleshooting TH2 focus learn issues Installing a Thermal 2 Head on a Lotem 800 Quantum

Technical contact(s)		???
Submitted by		Alvaro Ireta
Date submitted		04 Aug 2004