Phonic MQ 3229 - Page 9

Page 8
PHONIC CORPORATION
1 2 3 4 5 6 7 8
CN1
HEADER 8
-15V
C8
22uF/16V
3 2
1
8 4
U5A
4558
1
2
JK1A
RCA2*1
CH1_IN
JK2 PHONEJACK
CH1_IN
R2
2.2K
R3
56K
+15V
R4 10K
C9
220pF
EQ1_IN EQ1_HPL EQ1_LED +15V -15V +5V
LED1 LED POWER
R237 750
R226 750
C163
22uF/25V
EQ1_BOOST
C165 47pF
C166
22uF/25V
EQ1_CUT
R217 27K
10 9
8
U109C TL074
R218 27K
C164
22uF/25V
5 6
7
U109B TL074
C167 47pF
+15V
R222 27K
R221 27K
R224
20K
VR30
100KW
LEVEL
3 2
1
4 1 1
U109A TL074
C173
22uF/25V
R233 22K
-15V
R232 10K
SW1
HPF
IN
OUT
C12
22uF/16V
R7
10K
C13
22uF/16V
1 2 3 4 5 6 7 8
JP1-2 HEADER 8
EQ1_IN EQ1_HPL EQ1_LED
R5
330K
R6
820K
R8
100
RA1 RELAY DPDT
5 6
7
U5B
4558
11 9
C10
0.0068
C11
0.0068
3
4
JK1B
RCA2*1
CH1_OUT
JK3
PHONEJACK
CH1_OUT
13
CH2_O
+15V
Q1 2SC1815
R10
470K
16
1 4
D9
1N4001
R12 1.5K 1/2W
CH2_I CH2_OQ
R9 10K
8 6
+15V -15V +5V
C169
22uF/25V
R223
20K
R225
6.04K
C168
47pF
-15V
C172 47P
1
3 5
SWA
RANGE
R219 22K
R230
10K
R231 9.1K
EQ1_DR
12 13
14
U109D TL074
R220
22K
+5V
LED6
1 2 3 4 5 6 7 8 9 10
SW2
EQ
IN
OUT
EQ1_LED
-15V
-15V
Q2 2SC1815
1
2
JK4A
RCA2*1
CH1_IN
C14 47uF/25V
R11 33K
CH2_I
JK5 PHONEJACK
CH1_IN
R13 2.2K
R14 56K
+15V
3 2
1
8 4
U4A
4558
C15
22uF/16V
C16 220pF
EQ1_IN EQ1_HPL EQ1_LED +15V -15V +5V
R15 10K
1 2 3 4 5 6 7 8
CN2
HEADER 8
R234
0
R235
0
LED3 LED4 LED5
D1
1
D2
2
D3
3
D4
4
D5
6
IN
8
AMPO
7
VCC
9
GND
5
U110
BA6144(DIP)
+5V
R228
10K
R227
10K
C171
10uF/25V
R229 150K
C170 22uF/25V
EQ1_LED
LED2
C19
22uF/16V
R18 10K
R16
330K
R17
820K
5 6
7
U4B
4558
C17
0.0068
C18
0.0068
3
4
JK4B
RCA2*1
CH1_OUT
CH2_O
JK6
PHONEJACK
CH1_OUT
CH2_OQ
R19 10K
R20 100
C20
22uF/16V
SWITCH & IN/ OUT SCHEMATICS
SWITCH & IN/ OUT SCHEMATICS
SWITCH SCHEMATICS
IN/OUT SCHEMATICS
MQ 3229 SERVICE MANUAL