Yamaha R-N402, Service Manual

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10
R-N402/R-N402D
R-N402/R-N402D
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INTERNAL VIEW
Side view Top view
Front view
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SERVICE PRECAUTIONS
Safety measures
• S ome internal parts in this product contain high voltages and are dangerous.
B e sure to take safety measures during servicing, such as wearing insulating gloves.
• N ote that the capacitors indicated below are dangerous even after the power is turned off because an electric charge
remains and a high voltage continues to exist there.
B efore starting any repair work, connect a discharging resistor ( 5 k-ohms/10 W) to the terminals of each capacitor
indicated below to discharge electricity.
T he time required for discharging is about 30 seconds per each.
C1 4 0 and C1 4 3 on M A I N (1) P .C. B .
For details, refer to “ PR I NTED CI R C U I T B O ARDS ” .
a M A I N ( 8 ) P .C. B .
b S WI T C H P .C. B . ( R , S models)
c
M A I N (12) P .C. B .
d
M A I N (1) P .C. B .
e
TUNER Module ( R - N4 02)
DAB P .C. B . + DAB Module
( R - N4 02 D )
f D I G I TA L (1) P .C. B .
g
M A I N (9) P .C. B .
h
M A I N (6) P .C. B .
i
M A I N (11) P .C. B .
j P OW ER TRANS FO R M ER
k
M A I N (10) P .C. B .
l
M A I N ( 5 ) P .C. B .
m
M A I N (3) P .C. B .
n D I G I TA L (2) P .C. B .
o
M A I N (2) P .C. B .
p
M A I N (7) P .C. B .
q
M A I N ( 4 ) P .C. B .
7 8 9 :
1 2 3 5 6 4
n o m p q l
k