Denon AVR-2312

77
Input
CVBS,S,COMPONENT
A
Check on set value of each IC.
Is they the following voltage
values?
VSDA : I2C(AVSDA)
VSCL : I2C(AVSCL)
Refer to 79 page.
T15 : H(5V)
T14 : L(0V)
Is the DET signal able to
detect?
Is the signal input to video
decoder (IC121)?
<DET signal>
V_DET : H(3.3V)
S_DET : H(3.3V)
COMP_DET : H(3.3V)
<Input signal>
V : C1256
S(Y) : C1308
S(C) : C1309
COMPONENT(Y) : C1319
COMPONENT(Cb) : C1318
COMPONENT(Cr) : C1317
FRONT CONNECTOR B'D aw
or defective connection of the
connector.
The parts between
CONNETOR(CN21B) and IC121
are defective
VIDEO B'D aw.
V/COMPONENT : B-
q
S : C-
q
REGULATOR B'D aw.
VIDEO B'D and REGULATOR
B'D and connection of the wire
are defective.
HDMI B'D aw.
NO
NO
YES
YES
Is the power supply voltage
correctly output?
V+5V : CN931-4pin
V-5V : CN931-1pin
NO
YES
VIDEO B'D aw.
V/COMPONENT : B-
w
S : C-
w