7
7. MAINTENANCE
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Tip maintenance
Please refer to the HAKKO FM-203 or FM-206 Instruction manual.
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Checking Procedure
WARNING:
Unless otherwise directed, carry out these procedures with the power switch OFF and the power
UNPLUGGED.
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Verify the electrical integrity of
the heater and sensor
1. Check for a broken heater or sensor
Measure the resistance while at room tem-
perature(15 to 25°C; 59 to 77°F). It should be
8
Ω
±10%. If the resistance exceeds these limits,
replace the tip.
Measure the resistance across the tip as shown.
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Check the grounding line
1. Unplug the connection cord from the station.
2. Measure the resistance value between pin 2
and the tip (both tips).
3. If the resistance value is higher than 2Ω (at
room temperature), remove the black oxide
or replace the tip with a new one. If the resis-
tance value still does not decrease, check the
connection cord for breakage.
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Checking the connection cord
for breakage
1. Insert a set of verified tips in both sides of the
handle.
2. Measure the resistance value between two
pins.
Pin 1 - Pin 3
7~9
Ω
Pin 5 - Pin 3
8~10K
Ω
Pin 7 - Pin 4
7~9
Ω
Pin 8 - Pin 4
8~10K
Ω
If the measured value exceeds above values, re-
place the FM-2023.
1
4
7
2
8
5
6
3
