640t – Installation and Operating Instructions
Page 7-2
tr o u B l e s h o o t i n g
Symptom Possible Cause Corrective Action
LCD does not illuminate on
the control panel when the
ON/OFF switch is in the
ON position.
Laminator not connected to electrical
supply.
Insert attachment plug into receptacle.
Circuit Breaker tripped. Reset Circuit Breaker.
Rollers do not turn. Infrared eyes blocked. Unblock infrared eyes.
Feed tray interlock latch not in place. Slide interlock latch all the way to the left
into the side frame.
Laminated items are
curling.
Tension between the top and bottom film
roll is unequal.
Adjust tension per
“Film Tension” on page
6-10
.
Speed setting too slow. Slightly speed up laminator.
Adhesive deposited on
rollers.
Top and bottom film webs not aligned. Align film webs per
“Film Alignment” on
page 6-10
.
Laminate improperly loaded. Load film per
“Loading Film” on page 6-2.
Unsatisfactory laminate
adhesion.
Insufficient roller pressure. Adjust the roller pressure.
Laminate improperly loaded. Load film per procedure outlined per
“Loading Film” on page 6-2.
Rollers require cleaning. Clean rollers per
Cleaning the Rollers
page 7-1.
Laminated item unsuitable for adhesion. Item may be dirty or may have non-
porous surface that is extremely difficult
to laminate.