Ledco premier 4 series Diagnostic Manual
Page 1
LEDCO PREMIER 4 SERIES LAMINATOR
PROBLEM DIAGNOSTIC CHARTS
Procedure
Skill
Problem
Possible Cause
Repair Procedure
Number
Level
Laminator will not
No power
Check power cord
1
*
heat up,heat switch does
Check heat switch position
2
*
not illuminate (red) when
Check heat control fuse
4
*
engaged
Check for wires that are
5
**
disconnected, broken or
shorting out
Heat switch failure
Check heat switch
6
**
Heater failure
Check heaters
7
**
Heat sensor failure
Check heat sensor
8
***
Heat control board
Check specific heat control
12
***
transformer failure
board terminals
Heat control board
Check heat control
13
***
relay coil failure
board heat sensor terminals
___________________________________________________________________
Heat control board relay
Check heat control board
14
***
switch failure
relay switch terminals
___________________________________________________________________
Heat switch illuminates,
Ribbon cable wires to
Re-connect plastic wire
5
**
but digital display does
display disconnected,
harness to the back of
not
loose or broken
digital display
Re-connect plastic wire
9
***
harness to heat control
circuit board inside the
machine
___________________________________________________________________
Digital display failure
Replace digital display
10
**
___________________________________________________________________
Ribbon cable failure
Replace ribbon cable
11
***
___________________________________________________________________
Heat switch does not
Heat sensor wires
Check heat sensor wires
5
*
illuminate when
disconnected or loose
engaged,digital display
shows three dashes
Heat sensor failure
Replace heat sensor
15
**
Ribbon cable failure
Replace ribbon cable
11
***
Heat control board failure Check specific terminals
13,14
***
at specific terminals
on heat control board
Heat control board failure Replace heat control board
16
***
Skill Level Index: * Basic,End-User ** Intermediate or Dealer *** Advanced or Servicing Dealer/Technician
( - - - )