Denon DRA-395 Service Manual page 10

QQ
3 7 63 1515 0
LC72131M (IC401)
XI N 1
CE
2
DI 3
CL 4
DO
5
BO1
6
BO2
7
BO3
8
BO4
9
I O1
10
TE
L 13942296513
TC9184AP (IC602)
Vss 1
2
BASS +
-
BASS 3
CON 4
-
TREBLE 5
TREBLE
+ 6
GND
7
CK 8
BA7625 (IC501)
Monitor OUT 1
2
GND
6dB
IN5 3
www
LOGIC
GND 4
IN4 5
6dB
CTL E
6
.
IN3 LOGIC
7
CTL D 8
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LA1266 (IC402)
1
XOUT
20
2
3
19 V ss
4
5
18 AOUT
6
7
17 AI N
8
9
16 PD
10
11
V
15
DD
12
F MI N
14
AMI N
13
LA3401 (IC403)
I O2
12
I F I N
11
MUTING
FM AM CHANGE
1
16 VDD
BASS+
15 BASS +
-
14 BASS
13 COM
-
12 TREBLE
BASS-
11 TREBLE
+
COM
10 STB
9 DATA
TREBLE-
TREBLE+
A B E
16 IN1
L L
*
15 CTL A
H L
14 V OUT1 *
13 Vcc L H
*
x ao u163
12 IN2
y
H H L
11 CTL B
H H H
i
10 V OUT2
Note 1: * mark means that feasible for either H or L.
9 CTL C
Note 2: Each input terminal is provided with sink chip clamp (BA7625).
Each input terminal takes 20kohm at the end (BA7626).
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2 9
8
AM-IF
24 20 18 11 13
23
IF
22
BUFFER BUFFER
21
20
19
AM - I N
RF MIX
21
18
17
16
REG OSC
15
14
13
22 23
21 20 18
22 19 17
VOL PHASE
OSC PILOT DET
REG COMPARATOR
VCO STOP
SYMMETRICAL
REOCTANCE
CIRCUIT
FF
FF
FF FF
38kHz
38kHz 90°
DECODER
Q Q
3 6 7 1 3 1 5
Ro
Rb
Rc
Rc
2 4
3 5 6 7
9
1 16 7 8 10
Level shift
2
3
4
5
Code
detect
6
circuit
MONITOR OUT C D E
L L
IN 1
*
IN 2 H L
*
L H
IN 3
*
co
H H L
IN 4
IN 5
H H H
.
9 4 2 8
FM-IF FM-IN
10 2 3 5 6 7
1
V cc
POST
IF
FM - IF
Q.D.
AMP
AM-IF DET
OSC NARROW
AGC
S-METER
BUFFER S-METER
GND
24 4 14 19 17 16
13
16 15 14 12
LAMP
DRIVER
TRIGGER
STEREO
SWITCH
FF
19kHz 90°
MUTING
MUTING CONTROL
OUTPUT
FM AM CHANGE OVER
0 5 8 2 9 9 4
Rb
Vcc ON
MUTING
8 9
10 11
BASS+
15
14 BASS-
COM
13
12 TREBLE-
11 TREBLE+
V OUT 1 C D E V OUT 2
¾
L L IN 1
*
m
H L
IN 2
*
IN 3 L H IN 3
*
IN 4 H H L IN 4
H H H IN 5
IN 5
DRA-395
9 9
12
9
15
LED
8
DRIVER
2 8 9 9
¾
9