Marantz NR1609 Service Manual page 77

B
Input
CVBS
q
Check the settings of each IC.
Are the following voltages set?
DIGITAL PCB
[N1039 : 12 pin] : Hi (3.3 V)
[N1039 : 13 pin] : Hi (3.3 V)
[N1039 : 14 pin] : Lo (0 V)
YES
w
Extend the DIGITAL PCB using the jig.
e
Is the power voltage being output correctly?
V+5V : [C5285 : + side]
V-5V : [C5299 : - side]
YES
r
Is a signal being output from the video amplifier?
CVBS : [R5344]
: [R5341]
YES
• Check the connection between the FRONT CONNECTOR PCB and the AV PCB.
• Check the soldering of [CP4611] on the FRONT CONNECTOR PCB.
• Check the soldering of [CN5204] on the AV PCB.
• Check the soldering of [JK5204] on the AV PCB.
b These instructions refer to the AV PCB unless otherwise specified.
NO
DIGITAL PCB faulty.
NO
Check the connection between the FRONT CON-
NECTOR PCB and the AV PCB.
NO
The regulator part of REG PCB is faulty.
NO
• Check the [U5206] power voltage and check the
soldering of the surrounding circuits.
• The pattern between [U5206] and [JK5204] is
faulty.
C
Input
COMPONENT
q
Check the settings of each IC.
Are the following voltages set?
DIGITAL PCB
[N1039 : 11pin] : Lo (0 V)
[N1039 : 15pin] : Hi (3.3 V)
YES
w
Extend the DIGITAL PCB using the jig.
e
Is the power voltage being output correctly?
V+5V : [C5285 : + side]
V-5V : [C5299 : - side]
YES
r
Is a signal being output from the video amplifier?
COMP-Y : [R5362]
COMP-CB : [R5366]
COMP-CR : [R5370]
YES
• Check the connection between the FRONT CONNECTOR PCB and the AV PCB.
• Check the soldering of [CP4611] on the FRONT CONNECTOR PCB.
• Check the soldering of [CN5204] on the AV PCB.
• Check the soldering of [JK5204] on the AV PCB.
b These instructions refer to the AV PCB unless otherwise specified.
77
NO
DIGITAL PCB faulty.
NO
Check the connection between the FRONT CON-
NECTOR PCB and the AV PCB.
NO
The regulator part of REG PCB is faulty.
NO
• Check the [U5207] power voltage and check the
soldering of the surrounding circuits.
• The pattern between [U5207] and [JK5205] is
faulty.