Yamaha KX-E300, Service Manual

Page: 19 / 33

A B C D E F G H
1
2
3
4
5
6
KX-E300
19
■
PRINTED CIRCUIT BOARD (Foil side)
●
Semiconductor Location
Ref. No. Location
D201 D4
D202 D4
D203 D4
D204 D4
D205 D4
D206 D4
D207 D4
D208 F4
D209 D4
IC205 C4
●
Semiconductor Location
Ref. No. Location
Q201 E2
Q202 E2
Q203 D2
Q204 D2
Q205 D2
Q206 D2
Q209 D2
Q211 D2
Q212 D2
IC201 E2
IC202 D2
IC203 F2
IC204 G2
P.C.B. MAIN (2) (Lead Type Devices)
P.C.B. MAIN (2) (Surface Mount Devices)
w
e
To : MAIN (3)
F2
F1
S1
S2
S3
S4
S5
S6
S7
D1
D2
D3
Gu
D4
D5
D6
D7
D8
D9
D10
D1
1
PSW
OPE1
OPE2
Gu
To/From : MAIN (3)
LIR DIR GA DIL LIL
PLAYBACK LEVEL ADJ.
To/From : R/P & ER HEADS
RECORDING LEVEL ADJ.
Vu
5
SYN GU LM LIR LIL GA VA LOR LOL
To/From : MAIN (1)
ER GE RR PL GB
From : MAIN (1)
F1 F2 -22V REP SOL MOT LO- LO+ BIAS MSW3 MSW2 MSW1 LSW MR ML P-ON ACP +5V HIGH MET
PL
RL
GA
RR
PR
GE
ER
Point e (Pin 15 of C205) REC mode
V : 2V/div H : 0.1
µ
sec/div
DC range 1 : 1 probe
0V
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
CH 1
CH 2
*
AC POWER ON
*
AC POWER OFF