Akai CFTD2011, Service Manual

Page: 25 / 46

23
CONTROL BOARD CIRCUIT
1 2 3 4 5 6 7 8 9
10
CN
301
C
ON-
1
0
1
2
3
4
5
6
SW
301
PO
W
E
R
1
2
3
4
5
6
SW
302
SO
U
RCE
1
2
3
4
5
6
SW
305
ME
NU
1
2
3
4
5
6
SW
306
VOL DOWN
1
2
3
4
5
6
SW
307
VOL UP
1
2
3
4
5
6
SW
303
C
H
DOWN
1
2
3
4
5
6
SW
304
CH
U
P
1
2
3
4
5
6
SW
308
ST
O
P
1
2
3
4
5
6
SW
309
PL
A
Y
1
2
3
4
5
6
SW
310
EJ
ECT
R312 240 R315 430 R317 820 R319 2K4
R309 NC
GND
BK5V
GND
BK5V
VCC
3
GND
2
VOUT
1
SN
301
REM
O
T
E
GND
C301 0.
1U
R302 100
BK5V
+
C302 100U
/1
6
R307 10K
R306 2K7
POW
E
R
SOURCE ME
N
U
VOL DOW
N
VOL UP
CH DOW
N
CH UP PL
AY
EJ
ECT
STOP
PI
T
C
H 2.5m
m
STANDB
Y
R304 10K
R301 4K7
R314 240 R316 430 R318 820 R320 2K4
R310 NC
BK5V
GND1
1 2 3 4
CN
302
C
ON-
4
GND1
AD1 AD2 IR BK5V SDA_
1
SCL_
1
E C
B
Q
301
2SA
733
AD1 AD2 IR BK5V S
DA_
1
SCL_1 S
T
ANDB
Y
GND GND1
BK-5V
R311 NC
R313 NC
GND
GND
1
2
JP303 JU
M
P
GND
GND
LCC3
0
BI
L
L
E
astech E
lectronics (T
aiw
an) Inc
M
odel
N
o
:
D
escri
pt
ion:
Da
te
:
A
pprover:
C
h
ecker:
D
esigner:
P/
N:
Revi
si
on:
Page:
L
T
2030 CONTROL BOARD
1/1
DVR1
R308 10K
3
2 1
Q
302
2SC945
GND
2
Red
1
Green
3
LED301 LED-
3
P
R305 1K
R303 10K
2005/
07/
07
D1 1N
4148