Read Sharp XV-Z91E (serv.man10) Service Manual online
24
XV-Z90E
No
Yes
Does POWER LED flicker in red ?
Yes
Turn on the power again.
Yes
Is P1701 (9) pin (P CON0) H?
Is the FAN voltage supplied?
No
Is it in the stand-by due to
an error?
an error?
No
This is the failure of
IC2002.
IC2002.
Yes
FAN_ERROR is being detected.
Check around Q1701 and around
IC2002 (21) pin.
Check around Q1701 and around
IC2002 (21) pin.
Yes
No
No
No
Is 13 V outputted to P1701 (17)
(18) (19) pins?
(18) (19) pins?
Go to "Checking of Power Unit"
Check IC1708, IC1710 and
around these ICs.
around these ICs.
Yes
No
Is BU 5 V outputted from
IC1701?
IC1701?
Yes
Is Bu+6.5V outputted to P1701
(12) (13) (14) pins?
(12) (13) (14) pins?
Check IC1701 and its
periphery."
periphery."
Yes
No
Is BU 3.3 V outputted from
IC1702?
IC1702?
Check IC1702 and its
periphery.
periphery.
Check IC1703 and its
periphery.
periphery.
Yes
No
Is BU 2.5 V outputted from
IC1703?
IC1703?
Check IC8001 and the circuit
around the IC.
around the IC.
Check of IC2002 and around I/O
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