Denon AVR-X3000 Service Manual page 87

B
VIDEO B'D flaw.
Extend DIGITAL B'D using a jig.
Check power supply voltage and control signal of
video selector IC (IC511 , IC516).
(VIDEO B'D)
V +5V
V +5V
V select
COMPONENT select : J5023 = H (3.3V)
Check the signal input to video selector
IC (IC511 , IC516).
V
OMPONENT-Y
COMPONENT-Cb
COMPONENT-Cr
(VIDEO B'D)
Check the signal output from video selector
IC (IC511 , IC516).
(VIDEO B'D)
V
OMPONENT-Y
COMPONENT-Cb
COMPONENT-Cr
MONITOR OUT
Defective connection of FRONT CNT B'D (BN21B) or
FRONT CNT B'D pattern flaw
: J5019
: J5040
: J5007 = H (3.3V)
J5012 = H (3.3V)
J5016 = H (3.3V)
J5021 = L (0V)
YES
: J5001
: J5006
: J5004
: C5160
YES
to DIGITAL B'D
: BN21B-17pin
: BN21B-15pin
: BN21B-13pin
: BN21B-11pin
YES
Defective connection of SIDE CNT B'D (BN28B).
NO
Video selector IC (IC511 or IC516 ) flaw.
Defective the parts between video selector IC(IC511 ,
NO
IC516).
Defective the soldering video selector IC(IC511 , IC516)
NO
or video selector IC (IC511 or IC516) flaw.
87