●
Checking Procedure
WARNING:
Unless otherwise directed, carry out these procedures with the power switch OFF and the power UNPLUGGED.
■
Check for a broken heater or
sensor
1. Check for a broken heater or sensor
Measure the resistance
across this position.
Verify the electrical integrity of the heater and
sensor .
Measure the resistance of the heater and
sensor while at room temperature (15 to
25
°
C; 59 to 77
°
F). It should be 8
Ω ±
10%. If
the resistance exceeds these limits, replace
the tip.
■
Check the grounding line
1. Unplug the connection cord from the station.
2. Measure the resistance value between Pin 2
and the tip.
3. If the value exceeds 2
Ω
(at room temperature),
perform the tip maintenance described on p.12.
If the value still does not decrease, check the
connection cord for breakage.
■
Checking the connection cord
for breakage
1. Remove the soldering tip and the nipple.
2. Push the socket out from inside the handle
assembly .
3. Measure the resistance values between the
connector and the lead wires at the socket as
follows:
Pin 1 – Red
Pin 2 – Green
Pin 3 – Black
Pin 5 – White
If any value exceeds 0
Ω
or is
∞
, replace the
handle assembly .
■
Replacing the fuse
1. Unplug the power cord from the power rece
p
-
tacle.
2. Remove the fuse holder .
3. Replace the fuse.
4. Put the fuse holder back in place.
CAUTION:
Do not lose the O-ring located inside the nipple.
When reassembling, match the convex part of the
handle assembly with the concave parts of the O-
ring spacer and socket.
Green
Black
Socket
Red
White
1
4
7
2
8
5
6
3
13
