41
■
Checking the connection
cord for breakage
■
Checking the grounding
line
Checking the connection cord for breakage
1. Unplug the connection cord from the station.
2. Disassemble the heating element. {Please
refer to [Replacing the heating element
(heating core)]}
3. Measure the resistance values between the
connector and the lead wires at the socket as
follows:
Pin1
･･･････
Red {Heating element1 (+)}
①
Pin2
･･･････
Purple {Trigger (+)}
②
Pin4
･･･････
Black
｛
Heating element
１
(-)
｝③
Pin8
･･･････
Blue {Trigger (-)}
④
Pin9
･･･････
Yellow {Heating element2 (+)}
⑤
Pin12
･･････
Brown {Heating element2 (-)}
⑥
Pin13
･･････
Green (Grounding line)
⑦
*
If any value exceeds 0 Ω or is ∞, replace the
connection cord.
* For information on the plug 13, refer to
“
■
Checking the grounding line”)
1. Measure the resistance value between Pin
13 and the nozzle.
2. If the value exceeds 2 Ω (at room tempera
-
ture), perform the nozzle maintenance. If the
value still does not decrease, check the
connection cord for breakage.
4
1
8
5
12
9
13
Blue
Micro switch
Grounding
line
Socket
Pin contact
Green
Yellow
Red
Purple
①
⑤
②
④
⑦
Black
③
Brown
⑥
Summary of Contents for FR-702
Page 71: ...70 MEMO...
