Service manual

27
XV-Z90U
DT-200
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?
No
This is the failure of
IC2002.
Yes
FAN_ERROR is being detected.
Check around Q1701 and around
IC2002 (21) pin.
Yes
No
No
No
Is 13 V outputted to P1701 (17)
(18) (19) pins?
Go to "Checking of Power Unit"
Check IC1708, IC1710 and
around these ICs.
Yes
No
Is BU 5 V outputted from
IC1701?
Yes
Is Bu+6.5V outputted to P1701
(12) (13) (14) pins?
Check IC1701 and its
periphery."
Yes
No
Is BU 3.3 V outputted from
IC1702?
Check IC1702 and its
periphery.
Check IC1703 and its
periphery.
Yes
No
Is BU 2.5 V outputted from
IC1703?
Check IC8001 and the circuit
around the IC.
Check of IC2002 and around I/O