No.P10224
P. 38 / 47
12. MAINTENANCE AND TROUBLESHOOTING (continued)
No. Trouble
Cause
Solution
Breaking of fuse F2.
Replace F2 after solving the cause.
Trouble of relay CR1 and 2 on
P.C.B. P1053Q.
Check and replace relay CR1 and
2 on P.C.B. P10153Q.
Trouble of interface circuit.
Check and replace L8268M.
Trouble of motor control circuit.
Check and replace P6906P.
Trouble of filter circuit.
Check and replace P.C.B.P6768T
7
Wire will not be fed. (Inching or retract can
not be performed.)
Combination of wire feeder
mounted with encoder not
connected to ICN4.
Breaking of control cable (7
conductors).
Connect ICN4.
Checking control cable and
replace it.
Trouble of control circuit.
Check and replace P.C.B.P6906P .
8
Shield gas generated when pulling torch
switch pulled but no no-load voltage.
Operation stop of external
connection terminal board on
P.C.B. P10153Q not short-circuit.
Short-circuit operation stop.
Trouble of control / filter circuit.
Check and replace P.C.B.P6768T .
9
Due to being out of control of welding
machine, too large current flows.
Breaking of arc voltage detective
wire.
Check voltage switch S1 on
P.C.B.P10153Z and arc voltage
detective wire.
Trouble of filter circuit.
Check and replace P.C.B.P6768T.
CURR. VOLT. CONTROL switch
S3 set to PANEL.
Set S3 to ROBOT
Breaking of communication cable
or poor contact of socket.
Replace communication cable or
check contact of socket.
10
Current and voltage can not be set.
Trouble of interface circuit.
Check and replace P.C.B.
L8268M.
Trouble of hall current detector
CT2
Check and replace CT2.
11
WCR relay keeps working.
Trouble of WCR circuit.
Check and replace
P.C.B.P10153Q.
