Denon AVR-1712, Service Manual

Page: 53 / 161

53
Input
S
B
Check on set value of each IC.
Is they the following voltage
values?
HDMI B'D
FB124 : L(0V))
FB126 : L(0V)
FB118 : L(0V)
FB120 : L(0V)
Is the power supply voltage
correctly output?
V+5V : C951 : + side
V-5V : C947 : - side
Is the signal output from the
video amplifier?
S-Y : IC823-7pin
S-C : IC823-1pin
Is the signal output from the
video amplifier?
Y/C MIX : IC821-1pin
Check power supply voltage of
IC826 and IC823, and surrounding
circuitry soldering.
Check power supply voltage of
IC806 and IC821, and surrounding
circuitry soldering.
Check cable between main
unit and monitor or check
monitor.
Check power supply voltage of
IC821, and surrounding circuitry
soldering.
Is the signal input to selector
(IC826)?
S-Y : 1pin
S-Y : 12pin
Is the signal input to selector
(IC806)?
Y/C MIX : 12pin
Is the signal input to video amplifier
(IC821)?
Y/C MIX : 5pin
Check cable between main unit and
player or check player.
Extend HDMI B'D using a jig.
REGULATOR B'D flaw.
HDMI B'D flaw.
Check connection of FRONT
CONNECTOR BD and AV BD.
NO
NO
NO
NO NO
NO NO
YES
YES
YES
YES
YES
YES
YES
YES
b
Unless specified, AV B'D part.
Is the power supply voltage
correctly output?
FRONT CONNECTOR B'D
V+5V : CP13B-4pin
V-5V : CP13B-1pin
Check the pattern from IC823 to
IC821.
NO
q
e
w
r
t
y