Sparkfun Electronics 937b User Manual page 5

Problem 3.
The tip heats up intermittently.
[Check 3.]
Problem 4.
The tip is not wet.
[Check 5.]
Is the tip temperature too high?
• Set an appropriate temperature.
[Check 6.]
Is the tip clean?
• Refer to 'Tip Care and Use '.
Problem 5.
The tip is not wet.
[Check 7.]
Is the tip coated with oxide?
• Refer to "Insect and clean the tip" .
[Check 8.]
Is the iron calibrated correctly?
• Recalibrate.
Problem 6.
The tip cannot be pulled off.
[Check 9.]
Is the tip seized?
Is the tip swollen because of deterioration?
• Replace the tip and the heating element.
Problem 7.
The tip doesn't hold the desired
temperature
[Check 8.]