ƳƳ
5. Malfunction of Zero-Crossing Inspection Circuit Malfunction of the IDU Fan Motor U8
Main detection points:
z
Instant energization after de-energization while the capacirot charges slowly?
z
The zero-cross detection circuit of the mainboard is defined abnormal?
Malfunction diagnosis process:
7XUQSRZHURIIIRU
PLQXWHWKHWXUQ
EDFNRQ
7KHXQLWUHWXUQVWRQRUPDO
&RQFOXVLRQ8LVGLVSOD\HGGXHWR
SRZHURIIRQZKLOHWKH
FDSDFLWRUGLVFKDUJHVVORZO\
U8 is still
displayed
7KH]HURFURVVGHWHFWLRQFLUFXLW
RIWKHPDLQERDUGLVGH¿QHG
DEQRUPDO5HSODFHWKHPDLQERDUG
ZLWKWKHVDPHPRGHO
Yes
No
Start
End