Denon AVR-S920W, Service Manual

Page: 71 / 192

Input/Output
CVBS
B
Check the settings of each IC.
Are the following voltages set?
HDMI PCB
N1039 - 12 pin : Hi (3.3 V)
N1039 - 13 pin : Hi (3.3 V)
N1039 - 14 pin : Lo (0 V)
Is the power voltage being
output correctly?
V+5V : C5029 : + side
V-5V : C5031 : - side
Is a signal being output from
the video amplifier?
CVBS : JACK5000 C_out
• Check the operation again.
• Check the IC5001 power voltage and check the soldering of
the surrounding circuits.
• The pattern between IC5001 and JACK5000 is faulty.
Extend the HDMI PCB using
the jig.
HDMI PCB faulty.
Check the connection between the FRONT
CONNECTOR PCB and the VIDEO PCB.
NO
NO
NO
YES
YES
b
These instructions refer to the VIDEO PCB unless otherwise specified.
w
q
e
r
Input/Output
COMPONENT
C
Check the settings of each IC.
Are the following voltages set?
HDMI PCB
N1039 - 11 pin : Lo (0 V)
N1039 - 15 pin : Hi (3.3 V)
Is the power voltage being
output correctly?
V+5V : C5029 : + side
V-5V : C5031 : - side
Is a signal being output from
the video amplifier?
COMP-Y : JACK5001 out_Y
COMP-Cb : JACK5001 out_Cb
COMP-Cr : JACK5001 out_Cr
• Check the operation again.
Extend the HDMI PCB using
the jig.
HDMI PCB faulty.
Check the connection between the
FRONT CONNECTOR PCB and the
VIDEO PCB.
NO
NO
NO
YES
YES
YES YES
b
These instructions refer to the VIDEO PCB unless otherwise specified.
w
q
e
r
• Check the IC5002 power voltage and check the soldering of
the surrounding circuits.
• The pattern between JACK5002, JACK5003 and IC5002 and is
faulty.
71
Caution in
servicing
Electrical
Mechanical
Repair Information
Updating