Akai QX-D3305, Руководство по обслуживанию

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IC309 L7806CV
CURRENT
GENERATOR
REFERENCE
VOLTAGE
SOA
PROTECTION
SERIES
PASS
ELEMENT
STARTING
CIRCUIT ERROR
AMPLIFIER
THERMAL
PROTECTION
OUTPUT
2
3
1
INPUT
GND
BINARY TO 1 of 4
DECODER WITH INHIBIT
LEVEL
CONVER
-TER
16
6
10
9
8
7
12
14
15
11
1
5
2
4
VDD
INH
A
B
VSS
VEE
X0
X1
X2
X3
Y0
Y1
Y2
Y3
13X
3Y
IC LEAD IDENTIFICATION AND INTERNAL DIAGRAMS
IC3 TA2092N IC501 BU452BC
FM
L
PSC
MODE LF
FM
OSC
1ms
4 12
15
4
5
5
10
22
24
8
4
4
TEST
AMP
REFERENCE COUNTER
AMP
AMP
GATE
FM
H
HF
14
13
OT4
IC401 TC9257P
36 35
24
23
22
21
20
19
18
17
16
15
14
13
5
6
10
11
12
PW GND
OUT(-)1
PVCC1
OUT(+)1
IN1
V
V RI
V
V
CI
IN2
OUT(+)2
PVCC2
OUT(-)2
PW GND
PW GND
OUT(-)4
PVCC4
OUT(+)4
V IN4
SV CC1
SGND
VIN3
OUT(+)3
PVCC3
OUT(-)3
PW GND
-
+
-
+
+ +
- -
8
9
7
1
2
3
4
24 23
22 21 20 19
18 17
16
15 14
13
1 2 3 4 5 6 7 8 9 10 11 12
AM IF
REQ
AF
BUFF
BUFF
ST
FM
OSC SW
BUFF
BUFF
1/1 or
1/16
LEVEL
DET
1/8
AF
VCD
DIVIDE
DECODE
AM
DET
FM
DET
SW/MO
FM/AM
AMIF FMIF
AGC
MUTE
FM
MIX
AM
MIX
FMRF
IF
RF
GND FM
RFin AM
LOW
CUT MIX
OUT Vcc AM IF
IN FM IF
IN GND AGC
QUAD
R-OUT L-OUT
FM
RFout
RF
Vcc AM
RFin FM
OSC AM
OSC OSC
OUT ST
LED IF
REQ
DET
OUT
MPX
IN
LPF1
LPF2
IC201 LS22241/D3308
1
2 6 4
8
3 7
5
9
+ +
MUTE
ALC
Channel1
Channel2
NF1 IN1 OUT1 GND ALC V
CC
Out2 IN2 NF2
IC101 TA2149BN
1 2 3 4 5 6 7 8 9 10 11 12
+
-
+
-
Vcc
S
T
.B
Y
F
IL
T
E
R
B.S. B.S.
T. S. D
G
N
D
IC301 BA5415A
Reference
Voltage
1K
10K
4 3 2 1
8 5 6
7
+
-
IC251 UTC6650