Hakko Electronics FM2023-05 - Maintenance Procedures; Tip Maintenance; Checking Procedures

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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veried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.
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