Yamaha RP-U200 Service Manual page 31

A B
PRINTED CIRCUIT BOARD (Foil side)
1
2
5 B
3
5 A
4
5
6
C D
DSP P.C.B.
(Surface Mount Device)
E-32/J-30
E F
Semiconductor Location
Ref. No. Location Ref. No. Location
D401 C3 IC445 D2
D402 C3 IC447 C5
D403 D3 IC470 D3
D404 C5 IC479 C4
D405 D3
D406 C5
Ref. No. Location
D407 D4
D408 D4 Q406 C2
Q407 C2
D411 D5
Q408 C2
D412 D5
Q409 C3
D429 C3
D430 C3 Q412 C2
Q413 B2
D431 B3
Q414 B2
D432 B3
D433 B3 Q415 B2
Q416 C3
D434 B3
Q419 B3
D435 B4
Q423 C3
D436 B4
D501 C4 Q425 C3
NOTE)
The DSP P.C.B. actually has a four-layer pattern structure (part face pattern, internal pattern
1, internal pattern 2 and solder face pattern) but it is shown as "part face pattern + solder
face pattern" in this diagram.
NOTE)
DSP P.C.B.は、4層パターン構造（部品面パターン、内層1パターン、内層2パターン、ハンダ面パ
ターン）ですが、本図のDSP P.C.B.は、部品面パターン＋ハンダ面パターンを表記しております。
G H
RP-U200
Point t-A (CH1 : Emitter of Q416)
Point t-B (CH2 : Collector of Q419)
V : 5V/div (CH1), V : 2V/div (CH2)
DC, 1 : 1 probe, H : 5 sec/div
CH1
CH2
AC CORD ON AC CORD OFF
E-33/J-31