Yamaha KX-E300 Service Manual page 19

A B
I PRINTED CIRCUIT BOARD (Foil side)
1
P.C.B. MAIN (2) (Lead Type Devices)
2
3
P.C.B. MAIN (2) (Surface Mount Devices)
4
Point w
CH1 : Pin 10 of IC205
CH2 : OUT of IC103
V : 2V/div (CH1) V : 5V/div (CH2)
H : 0.5 sec/div DC range 1 : 1 probe
5
CH 1
CH 2
* *
AC POWER ON AC POWER OFF
6
C
To : MAIN (3)
e
w
Point e (Pin 15 of C205) REC mode
H : 0.1 µsec/div
V : 2V/div
DC range 1 : 1 probe
0V
D E
PLAYBACK LEVEL ADJ.
To/From : MAIN (3)
To/From : R/P & ER HEADS
PL
RL
GA
RR
PR
GE
ER
From : MAIN (1)
To/From : MAIN (1)
F G
RECORDING LEVEL ADJ.
G Semiconductor Location
Ref. No.
Q201
Q202
Q203
Q204
Q205
Q206
Q209
Q211
Q212
IC201
IC202
IC203
IC204
G Semiconductor Location
Ref. No.
D201
D202
D203
D204
D205
D206
D207
D208
D209
IC205
H
KX-E300
Location
E2
E2
D2
D2
D2
D2
D2
D2
D2
E2
D2
F2
G2
Location
D4
D4
D4
D4
D4
D4
D4
F4
D4
C4
19