Printed Circuit Board - Yamaha RX-797 Service Manual

A B
RX-797

PRINTED CIRCUIT BOARD

1
MAIN (2) P.C.B.
(Side A)
POWER TRANSFORMER (U, C, A, G, E)
or MAIN (5)
2
3
MAIN (2)
Circuit No. U, C R
J252 X O
CB253, 254 O X
F251 O X
4
X: NOT USED
O: USED/APPLICABLE
5
28
6
C
Lead Free Solder Used
(R, L)
W291
MAIN (8)
W295
Point w
MAIN (3)
CB271
CH 1 : (+) of C272
CH 2 : Collector of Q271
A G, E L
O X O
X O X
X O X
MAIN (4) P.C.B.
MAIN (1)
CB132
OPERATION (1)
W802
FUNCTION (2)
CB605
D E
MAIN (3) P.C.B.
(Side A)
2 2
CH2 CH1
MAIN (1)
W104
↑ ↑
AC POWER ON AC POWER OFF AC POWER ON
(Connect the power cable) (Disconnect the power cable) (Connect the power cable)
(Side A)
MAIN (1)
CB128
TRANSFORMER
F
MAIN (5) P.C.B.
R, L models
POWER TRANSFORMER
MAIN (2)
CB257
VOLTAGE SELECTOR
SW291
240V 1–2/5–6
220V 2–3/6–7
110V 3–4/7–8
120V 4–5/8–1
VOLTAGE
SELECTOR
MAIN (5)
Circuit No. R
CB293, 294 O
F291 O
J298 X
X: NOT USED
O: USED/APPLICABLE
↑
MAIN (8) P.C.B.
(Side A)
MAIN (2)
CB252
WH
POWER
G H
(Side A)
L
X
X
O
BE
AC IN