Denon AVR-591 Service Manual page 35

B
Input
S
Check power supply voltage.
FRONT CONNECTOR B'D
V+5V : CP13B-4pin
V-5V : CP13B-1pin
OK
Check on set value of each IC.
HDMI B'D
L2706 : L(0V)
L2707 : L(0V)
L2708 : L(0V)
L2709 : L(0V)
L2710 : L(0V)
L2711 : L(0V)
OK
Extend HDMI B'D using a jig.
Check power supply voltage.
V+5V : IC811-21pin
V-5V : IC811-16pin
OK
Check output of video amplifier.
S-Y : IC808-7pin
S-C : IC805-7pin
OK
Check output of video amplifier.
Y/C MIX : IC807-7pin
OK
Check output of video amplifier.
Y/C MIX : IC807-1pin
OK
Check cable between main
unit and monitor or check
monitor.
NG
REGULATOR B'D flaw.
NG
HDMI B'D flaw.
NG
Check connection of FRONT
CONNECTOR BD and AV BD.
NG
Check input selector(IC806).
S-Y : 13pin
S-C : 2pin
OK
Check power supply voltage of
IC806 and IC808, and surrounding
circuitry soldering.
Check output of video amplifier(IC805).
NG
S-Y : 1pin
S-C : 7pin
OK
Check power supply voltage of
IC807, and surrounding circuitry
soldering.
NG
Check input of selector(IC804).
Y/C MIX : 12pin
OK
Check power supply voltage of
IC807 and IC804, and surrounding
circuitry soldering.
35
Check cable between main unit and
player or check player.
NG
Check output of video amplifier(IC808).
S-C : 1pin
Check power supply voltage of
IC808, and surrounding circuitry
soldering.
Check input circuitry soldering of
OSD IC(IC810).
NG
Check input of OSD IC(IC810).
S-Y : 15pin
Check power supply voltage of IC810,
and check oscillation of IC810.
(X'TAL / LC oscillation)
b Unless specified, AV B'D part.
NG
OK
NG
OK