Loveshaw MicroJet 5x5, Руководство техника

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2 MicroJ et T rouble-S hooting G uide
Head: B ) Ink lamp does not c ome on when ink c ontainer is
empty
* R emove pump cover (Item #21). Page 28.
* With power disconnected, check continuity across reservoir
pins 1 and 2 on four pin connector side “A ”
(Item #2) page 29.
See figure 4 on electrical testing diagram page 18. Circuit
should be open.
* Check resistance of lamp between pins 3 and 4 on four pin
connector on side “ A ” . R esistance should be 25 ohms. If circuit
is open replace lamp (Item #12) Page 28. See
LOW INK
LAMP/RESERVOIR LEAD REMOVAL
procedure. Page 10.
* Check voltage between pins 1 and 2 on four pin connector on
side “ B ” . A very small voltage of .075 volts DC should be
present. If no voltage is present, replace
CPU
assembly (I tem
#7) Page 28.
* Check voltage between pins 3 and 4 on four pin connector on
side “B ”. V oltage should be 25 volts DC. If no voltage is
present, replace
CPU
assembly (Item #7) Page 28.
* If lamp remains out, call for service.
Head:
C ) Unit does not purge
* T est pump pressure (Item #11). Page 28. Pressure should be
between 2.0 and 3.0 psi. If pressure is zero, proceed to step
“ M ” .
* Check ink level in container and replace if empty.
* Check for kinks in tubing and replace, if necessary.
* T est for ink flow from brass cap/ink container: Crimp tubing
going into reservoir from ink container Pg. 15,Pg. 26 (Item 15)
R emove tubing from inlet of reservoir and test for ink flow by
loosening crimp (discharge into container and avoid getting ink
on circuit cards). If no flow is present, replace ink container
and/or brass cap.
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