F
H
J
L
N
G
I
K
M
O
KRC-225/235/265/265S
1
2
6
3
4
5
4.7K
4.7K
22K
22K
47K
10K
22K
22K
47K
10K
22K
22K
47K
22K
47K
22K
22K
22K
22K
22K
IC3
IC5
KRC-225/235/265/265S (1/2)
SYNTHESIZER UNIT (X14-6850-XX)
∗
IC4
IC2
IC1
A
CME1 (D40-1136-05)
10K
R161
∗
C
∗
B
0V
0V
5V
0V
5V
0V
5V
10.2V
5.0V
5.0V
5.0V
14.4V
14.2V
8.2V
0V
5V
5V
0V
5V
0V
0V
5V
5V
0V
0V
0V
5.0V
0V
5V
5V
0V
5V
0V
0V
5V
5V
14.4V
0V
0V or 5.0V
5V
0V
5V
0V
0V
5.0V
0V
5.0V
0V
0V
0V
0V
1.3V
0.8V
3.5V
0V
8.2V
3.5V
0.8V
1.3V
0V
7.3V
4.9V
7.3V
14.4V
7.3V
0V
7.3V
7.3V
7.2V
7.2V
0V
7.2V
7.2V
7.3V
7.3V
0V
7.3V
14.4V
7.3V
3.3V
7.3V
0V
5V
0V
0V
5V
0V
5V
0V
5V
0V
5V
0V
5.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.0V
4.8V
4.0V
0V
5V
0V
5V
0V
8.2V
8.2V
8.2V
8.2V
8.2V
8.2V
8.2V
5.1V
3.4V
0V
4V
0V
4V
0V
5V
B
C D
A1
REAR PREOUT
Q450
J5
Q451
D50
D52
D51
Q50
Q350
P-CON.
Q351
D352
Q352
Q151
D151
D152
D150
Q150
Q201
D200
Q203
FM+B SW
J1
CN1
J3
Q320
Q55
Q54
D55
Q56
Q57
+B SW
Q53
Q52
Q51
D53
D54
Q153
(X14-6850-XX)
A
DRIVER
Q51,52
BACK-UP
5V AVR
BACK-UP DETECTION
(MOMENTARY POWER
DOWN DETECTION)
SW
COM
AMPLIFIER
EQUALIZER
Q200
Q202
J1
X16-
2/2
D371
D351
Q370
D100
HD1
S3
M
M1
S1
S2
POWER IC
P-CON.
PROTECTION SW
Q352
P-CON.
PROTECTION
INHIBIT SW
P.ON
5V AVR
SYSTEM MI-COM
SVR DISCHARGE SW
PRE OUT
MUTE DRIVER
MUTE
LOGIC
PANEL 5V
SW
COM+B
AVR
E-VOL. &
N.C. MPX
MUTE SW
PRE OUT
(Rch)
MUTE SW
PRE OUT
(Lch)
FM+B
SW
AM+B
SW
AM+B
SW
FRONT-END
ELECTRIC
VOLUME
MUTE SW
BU
BU
BU
BU
BU
BU
BU
BU
BU
BU
BU
BU
BU
BU
BU
BU
+5V
+5V
+5V
P5V
+5V
+5V
+5V
+5V
+5V
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
P5V
+5V
+5V
P5V
+5V
+5V
P5V
P5V
+5V
+5V
+5V
L8 4.7uH
41
C163 0.01
0.01
C321
0.01
C202
R129 22K
AM+B
19
23
20
21
22
AUDIO OUT
SD
S-METER
IF1+B
14
17
18
VDD 5V
IF2+B
15
16
SDA
SCL
DIG GND
10
11
12
13
OSC GND
VT
PLL+B
IFC OUT
7
8
9
OSC GND
OSC GND
OSC GND
FM ANT
3
4
5
6
AM ANT
OSC GND
FM+B
1
2
RF GND
10u16
C450
+
270
R450
10u16
C451
R451
R454 100
R452
30K
2 Lch
R453
30K
R455 100
+
270
1 Rch
13
12
11 10
9
5
4
3
2
1
FR+
RR+
P-ANT
P-CON
ACC
B.U
GND
9
5
17
23
21
19
L1
140uH
3300u16
C50
+
43K
R57
0.01
C52
47K
R55
33K
R52
10K
R54
R352
3.3u25
C350
+
22K
C351
0.1u50
C352
+
0.068
4.7K
R16
0.22u50
C18
0.22u50
C17
4.7K
R15
0.22u50
C15
4.7K
R13
0.22u50
C16
R14 4.7K
100u10
C159
+
+
C160
10u16
R152 1K
R151 4.7K
R153 91K
430
180K
C162 1u50
+
R157 100
R158 33K
0.01
R155
R156
22
23
24
25
0.01
C151
47u10
C150
+
L3 4.7uH
0.1
C506
4.7K
R150
0.1
C155
0.015
C153
0.22
C154
0.033
150P
C157
C156
7
5
6
0.22
0.22
1u50
C152
+
24
IF1 GND
IF2 GND
0.01
C200
W200
0.01
C201
22K
R203
22K
R201
1K
R202
1K
R200
R205
150
9
8
L9 4.7uH
63
10
C206 47u10
+
1
2
3
4
5
1
2
3
4
5
FWD/REV
GND
HEAD R
HEAD
COM
HEAD L
0.047
C251
10K
R251
1500P
C2
1500P
C1
22K
R1
22K
R2
12
11
10
9
8
7
6
5
4
3
2
1
P
AN SW
L
D
ATA
S
L
CLK
L C
E
L
D
ATA
L
u GND
P
AN5V
RESET
ILL
GND
LAMP
+B
ESD GND
R322 2.2K
R301 1K
R303 1K
R305 1K
R304 1K
27K
47K
R320
R321
R324
100u16
C57
+
R62
100u10
C58
+
1K
R64
1K
R63
R65
2.2 1/2W
R66
2.2 1/2W
4.7K
2.7K
R207
R206
3
4
25
23
36
32
34
35
37
38
5
4
6
3
67
62
40
C56
100u6.3
+
10u10
R58
22K
100
R59
C55
+
C54
0.01
100u16
+
39
3
7
5
9
44
GND
7
R160 47K
6
5
4
3
C164 0.01
2
1
9
8
11
10
12
13
VDD
14
+
0.022
3
C7
120K
R7
100u10
100
+
100P
C5
C9
R5 6.8K
R3
L I
N
8
L N
F
L O
U
T
7
6
C3
47u6.3
4
10
R250
120K
R8
C250
100u10
R6 6.8K
+
C8
0.022
C10
100u10
R4 100
GND
VCC
R OUT
5
4
100P
C6
R NF
3
2
+
+
C4
47u6.3
R IN
1
16
7
24
22
C53
25
26
0-21
MODEL NAME
KRC-235
UNIT NO.
0-10
NO
YES
R120
KRC-265
YES
YES
NO
R121
F1 (10A)
3.3K
R50
1/2W
61
R371
R373
1K
1K
R372
22K
40
∗
W104
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
TA
B
GND
RR-
STBY
RR+
VCC
FR-
GND
FR+
SVR
FRI
RRI
GND
FLI
RLI
AC GND
RL+
GND
RL-
VCC
FL+
MUTE
FL-
GND
CD
R159 100K
28
27
26
25
24
23
22
21
20
19
18
17
16
15
AC OUT
L
AC OUT
R
CREF
OUT
LF
OUT
RF
OUT
LR
OUT
RR
VDD
GND
SDA
SCL
S MUTE
MUX R
MUX L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AC IN L
AC IN R
T
APE R
T
APE L
CDR
CDRG
CDL
CDLG
PHONE
AM
MPX
LEVEL
MP
IN
MP
OUT
54
64
C13
C14
L4
52mH
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
ANT
CON
P C
O
N
AMP
MUTE
AMP
STBY
SVR
REQ H
CH CON
MUTE
REQ C
VDD
GND
GND
FF/REW
P
ACK IN
FM+B
AM+B
SCL
MOTOR
CH CLK
DATA H
DATA C
SD
PLL CLK
PLL DATA
SDA
L CE
L CLK
L DATA S
L DATA L
GND
XIN
GND
GND
HOLD
VDD
GND
GND
VDD
GND
GND
VSS
GND
XOUT
SW5V
ILL
BEEP
ROLL OFF
NOISE CANCELLER
SEL1
SEL2
SEL3
EQ MUTE
FWD/REV
REMO
ACC DET
B.U. DET
S METER
PANEL
38
37
36
27
28
26
25
R154 750
C161 1u50
+
61
62
44
64
67
X1
4.5MHz
C103
22P
C102
22P
6
4
3
5
9
10
7
8
11
12
13
R116 4.7K
R119 2.2K
R118 2.2K
1K
10
R306
1K
15
2
R131 10K
R114 22K
16
R106 1K
47K
47K
R127
R126
C452
NO
YES
0-21
KRC-225
0-11
NO
YES
NO
TDA7384A
IC4
TDA7386
TDA7384A
TDA7386
YES
KRC-265S
YES YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
R122 R123
NO
YES
NO
YES
NO
YES
NO
W104
YES
NO
YES
1
TH1
0.01
C101
47K
R125
R105
2.2M
R103
R138
22K
47K
R137
1K
R1
15
P1
47u6.3
C320
+
47
R323
1/2W
1/2W
T.MUTE
GND
MOT GND
MOT+B
GND
PACK IN
Lch
1
2
FWD
REV
Rch
Ref.99
6
3
4
5
Q350
Q351
Q151
Q153
IC3
Q320
10K
Q54,55
IC2
Q150
CAUTION:
For continued safety,
replace safety critical components only
with manufacturer's recommended
parts (refer to parts list).
indicates
safety critical components. For contin-
ued protection against risk of fire,
replace only with same type and rating
fuse(s). To reduce the risk of electric
shock, leakage-current or resistance
measurements shall be carried out
(exposed parts are acceptably insulat-
ed from the supply circuit) before the
appliance is returned to the customer.
Manufacture under license from Dolby
Laboratories.
"Dolby" and the double-D symbol are
trademarks of Dolby Laboratories.
