Marantz NR1601 Service Manual page 35

A
Input
CVBS
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 : H(5V)
L2707 : L(0V)
L2708 : L(0V)
L2710 : H(5V)
L2711 : H(5V)
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.
V : IC808-7pin
OK
Check output of video amplifier.
V : IC805-1pin
OK
Check output of video amplifier.
V : 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 of selector(IC809).
V : 3pin
OK
Check power supply voltage of
IC808, and surrounding circuitry
soldering.
NG
Check input of OSD IC(IC810).
V : 15pin
OK
Check power supply voltage of
IC810 and IC805, and check
oscillation of IC810.
(X'TAL / LC oscillation)
NG
Check input of selector(IC804).
V : 11pin
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 input of selector(IC809).
V : 14pin
Check power supply voltage of
IC809, and surrounding circuitry
soldering.
NG
Check input circuitry soldering of
OSD IC(IC810).
b Unless specified, AV B'D part.
NG
OK