3
TIP TEMPERATURE TESTING ERRORS
NOTE:
Tip temperature testing must be done using 30 gauge thermocouple wire resistance welded to the center of the
wetted area on the tip, tinning should be removed before welding. Other methods of measurements, or heavier gauge thermo-
couple wire, will cause errors. Thermocoupled tip temperature test kits are available; see Replacement Parts and Accessories
Section.
Replace soldering tool with known good tool and recheck tip temperature.
Troubleshoot soldering tool using guide in soldering iron tech sheet.
Calibrate station using WCM1 Calibration Unit. Instructions are in Calibration Unit tech sheet.
Calibrate tip temperature using WCM1 Calibration Unit; especially if a category B or C tip is used (see Tip and Tool Selection Sheet
for category of tip). Instructions are in Calibration Unit Tech Sheet.
DISPLAY PROBLEMS
Missing segments or digits.
Replace printed circuit board assembly
Display reading unsteady.
Check that line cord is properly grounded.
Check for low line voltage.
Check AC line for excessive noise.
Replace soldering tool with known good tool and recheck tip temperature.
Check tool for defects using guide in soldering iron tech sheet.
HIGH TIP VOLTAGE
Replace soldering tool with known good tool and recheck tip voltage.
Troubleshoot soldering tool using guide in soldering iron tech sheet.
Check for continuity from pin #5 of tool receptacle to line cord ground pin.
Check wiring from tool receptacle to line cord ground pin - repair if defective.
CUSTOMER SERVICE
Should you EC2002M require service, it may be sent to the following address:
USA
Cooper Tools - Weller Division
1000 Lufkin Road
Apex, NC 27539
Attn: Repair Department
FAX: 919-387-2640
Phone: 1-800-476-3030
CANADA
Cooper Tools
164 Innisfil Street
Barrie, Ontario, Canada L4N 3E7
Attn: Repairs
FAX: 1-800-403-TOOL (8665)
Phone: 705-728-5564 Ext. 2026
