Denon AVR-X4000 Service Manual page 98

B
VIDEO B'D flaw.
Extend DIGITAL B'D using a jig.
Check power supply voltage and I2C control signal of
video selector IC (IC511).
V+3.3V : J5043
V-5V : J5042
I2C(SCL) : J5046
I2C(SDA) : J5047
(VIDEO B'D)
Check the signal input to video selector IC (IC511).
V
OMPONENT-Y
COMPONENT-Cb
COMPONENT-Cr
(VIDEO B'D)
Check the signal output from video selector IC (IC511).
(VIDEO B'D) to MONITOR to DIGITAL B'D
V
OMPONENT-Y
COMPONENT-Cb
COMPONENT-Cr
MONITOR OUT
Output terminal (JK511 or JK513) or pattern flaw.
HDMI OUT
Defective connection of FRONT CNT B'D (BN21B)
or FRONT CNT B'D pattern flaw
I2C communication wave form
YES
: C5107
: J5010
: J5007
: J5006
YES
: J5019 BN21B-17pin
: J5021 BN21B-15pin
: J5028 BN21B-13pin
: J5029 BN21B-11pin
YES
CH1: CLK
CH1: DATA
Power supply IC (IC513) flaw.
Defective connection of SIDE CNT B'D (BN28B)
NO
Video selector IC (IC511) flaw
Defective the parts between IC511.
NO
Defective the soldering video selector IC (IC511) or video
NO
selector IC (IC511) flaw.
98