Toshiba RAV-SM567CTP-E Service Manual page 53

[Abnormal E12]
Power off.
Is there an
incomplete connection
or broken wire on the internal
board (MCC-1643)?
Disconnect the connector CN210 to
the internal board (MCC-1643).
Does the
fan turn smoothly when
turned by hand?
Is each
resistance value
on the motor side of the
fan motor connector CN210
of the internal board
(MCC-1643)
correct?
Is F01 of the internal
board (MCC-1643)
open?
Is R04 or R05 of
the internal
board (MCC-1643)
open?
SVM-13050.indb 53 SVM-13050.indb 53
YES
NO
NO
YES
Incorrect
Model name for the internal fan motor.
ICF-340WD94-1, CF-340WD94-2, ICF-340WD139-1
<Checking procedure>
Measure the resistance of the following terminals with the tester.
Correct
Internal motor circuit is damaged if the measured value is out of
the range in below table.
7
Pin No.
Color Blue
Measure by connecting the com side to 4 (Black) while measuring.
The measurement may vary.
Measurement place
Between 4 (Black) - 1 (Red)
I.
Between 4 (Black) - 5 (White)
II.
Between 4 (Black) - 6 (Yellow)
III.
Between 4 (Black) - 7 (Blue)
IV.
[Action if the measurement is out of the range]
If any measurement in the above table is between 0 to several
100 Ω, replace the control unit board together with the motor since
the control board of the unit is damaged.
Correct
Incorrect
Correct
Incorrect
6 5 4
3 2
Yellow White Black - -
Resistance value
a, b, c
(M )
35k – 65k
130k – 170k
(M )
– 53 –
FILE NO. SVM-13050
Repair the connector
connection.
Replace the internal
fan motor.
Replace the internal
fan motor.
1
Red
Replace the internal
board (MCC-1643).
Replace the internal
board (MCC-1643).
Check the internal
board (MCC-1643).
If faulty Replace
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