Kenwood KRC-218 Service Manual page 10

K
REAR PREOUT
J5
C452
0.01
R452 R453
30K 30K
Q450 Q451
PRE
MUTE
SW
+ +
IC2
8.2V
3.4V
IC2
ELECTRIC
VOLUME
R65
2.2 1/2W
Q56
R66
2.2 1/2W
COM+B
AVR
Q57
R63 R64
Q55
1K 1K
Q54
Q54,55
47K
COM
+B SW
47K
EQUALIZER
AMPLIFIER
(X14-614x-xxx)
MODEL NAME UNIT NO. A B C D
KRC-208S (K) 0-10
YES NO YES
KRC-288 (M) 0-21
YES YES
KRC-218 (K) 0-11
NO NO YES
KRC-268 (M) 0-22
NO YES
KRC-28MR (K)
0-12 YES NO YES
L
FM+B SW
22K
26
22K
Q200
25
L3 4.7uH
Q150
C150
47u10
+
C151
0.01
Q150
E-VOLUME
MUTE SW
0V
5V
0V
5V
0V
C157
150P
C156
0.033
54
0.047
+ +
C3
47u6.3
C6
100P
IC5
KRC-208S/218,268/288,28MR (K/K,M/M,K) (1/2)
R120 R121 R122 R123 CN2 W104 IC1
NO YES NO YES NO NO LC72366-9592
NO NO YES YES NO NO YES LC72366-9592
YES NO NO YES NO NO LC72366-9592
NO YES NO YES NO NO YES LC72366-9592
NO YES NO YES YES NO LC72366-9593
M
L4
52mH
FM+B
DRIVER
Q201
AM+B
DRIVER
R203
22K
Q203
C200
AM+B
0.01
SW
Q202
22K
22K
8
9
D200
C206 47u10
+
10
63
ME1 (D40-1136-05)
S3
CN1
C251 R251
10K
FWD/REV Ref.99
1
GND
2
HEAD R
3
Rch
+
HEAD COM
4
HEAD L
Lch
5
KRC-208S/218,268/288,28MR
N
ANT
J1
FRONT-END
A1
1
RF GND
2
FM ANT
3
AM ANT
4
OSC GND
5
FM+B
6
AM+B
7
OSC GND
8
OSC GND
9
OSC GND
10
OSC GND
11
VT
12
PLL+B
13
IFC OUT
14
SDA
15
SCL
16
DIG GND
17
VDD 5V
18
IF2 GND
19
IF2+B
20
AUDIO OUT
21
SD
22
S-METER
23
IF1+B
23
IF1 GND
S2
FWD
6 T.MUTE
5 GND
REV
4 MOT GND
M1
M
3 MOT+B
HD1
S1
2
PACK IN
1 GND
O
X13-
J1
2/2
A