Toshiba AW-G9930S Service Manual page 15

(2) Failure diagnosis with E7 failure error message
The E7 error message is classified into E7-1 to E7-4, moreover each massage is shown with digital display flashing alternately.
So, perform the failure diagnosis by reffering to the massage obtained in the field. If the massage is not clear, perform the
same diagnosis as in the E7-4.
Indication Detail of abnormality
detected
Forward rotation not
1
obtained in motor
washing. (Inverse rotation
E 7-1
is normal operation.)
Inverse rotation not
obtained in motor
2
washing. (Forward
E 7-2
rotation is normal
operation.)
No rotation only in motor
3
spinning. (Washing is
E 7-3
normal).
4
Motor not rotate. Rotation
sensor no signal.
E 7-4
* In the failure diagnosis, timer failure or failures other than the timer will be determined by using the inspection mode under
"Program timer detailed failure diagnosis method".
Diagnosis procedure for each error message
1
E 7 - 1
Perform Inspection mode setting
procedure 1) and 2). (Setting to
standby status.)
*: It should be each rated voltage.
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Failure location suspected
•
•
•
Note 1
• • • • • •
Check voltage across CN1 black and CN4 blue
:
in the standby status.
Is AC 220 V* obtained?
Yes
Press the COURSE button to set motor normal
rotation mode, and check the above voltage.
Does voltage change from AC 220 V*→ 0 V?
No
Program timer failure
– 14 –
• •
Diagnosis is according to the
procedure 1.
•
Diagnosis is according to the
procedure 2.
•
Diagnosis is according to the
procedure 3.
Diagnosis is according to the
procedure 4.
No
Lead wire unit connector disconnected
:
or lead wire breakdown
Yes
Forward rotation side of drive
:
assembly is locked.
Failure diagnosis method