Checking The Electrical Parts - Sanyo SPW-U253GH56 Service Manual

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Checking the Electrical Parts

1
Power transformer (TR1) ................. Indoor unit *Measure the coil resistance.
• Primary
• Secondary
2
Power transformer (TR2) ............ Outdoor unit
• Primary
• Secondary
3
Indoor fan motor (FMI) ............... Indoor unit
• Measure the resistance between each terminal of 9P (WHT) socket
connected to the indoor fan motor.
4 Outdoor fan motor (FMO) ........... Outdoor unit
Measure the resistance in the same manner as explained above 3.
•
4
5
Fan motor capacitor ............ Both in indoor and outdoor unit
• Remove the lead wires from the capacitor terminals,
and then place a probe on the capacitor terminals as
shown in Fig. 45. Observe the deflection of the pointer,
setting the resistance measuring range of the multimeter
to the maximum value.
• The capacitor is "good" if the pointer bounces to a great
extent and then gradually returns to its original position.
NOTE
The range of deflection and the deflection time differ
according to the capacity of the capacitor.
; Measure the resistance between No.1 and No.3
(WHT lead wires) terminals of 3P (WHT) socket
connected to power transformer.
14V ; Measure the resistance between No.1 and No.2
(RED lead wires).
10V ; Measure the resistance between No.3 and No.4
(BRN lead wires).
Refer to "1-3 Other component specifications".
; Measure the resistance between No.1 and No.3
(WHT lead wires) terminals of 3P(WHT) socket jointed
to power transformer.
14 V ; Measure the resistance between No.1 and No.2
(BRN lead wires).
Refer to "1-3 Other component specifications".
Refer to "1–2–(A) Major component specifications".
Refer to "1–2–(B)Major component specifications".
*Measure the coil resistance.
*Measure the coil resistance.
*Measure the coil resistance.
– 98 –
4. Service procedures
Multimeter
Fan motor
Capacitor
Fig. 45
0643_X_S
SM830035