Kenwood KRC-165 Service Manual

KRC-165 2
BLOCK DIAGRAM
IC1
KEY
MUTE
B.U DET
.
B.U
ACC
P-CONT.
MUTE
PRE
POWER IC
EQ. AMP
AMP
N.C.MPX
E-VOL.
FRONT Lch
FRONT Rch
REAR Lch
REAR Rch
J2
LED
CASSETTE MECHA
MAIN
IC5
1 Lch
2 Rch
PRE OUT
IC2
IC4,Q151
Q150,153
IC3
SP OUT
REAR
RST SW
RST IC
IC6
Q301
ACC DET.
P-CONT
.
ANT-CONT
J2
J5
FM+B
Q200,201
AM+B
Q202,203
5V
AM BPF
FM BPF
Q450,451
Q62
Q50
Q350-353
Q53
SW5V
Q54-57
8V
Q58-61
ILLUMI
BU5V
Q51,52
SYSTEM MI-COM
RST
Q370,371
ANT-CONT
7SEG LCD
ED1
FM ANT
AM ANT
RF GND
FM+B
AM+B
OSC GND
OSC GND
OSC GND
VT
PLL +B
IFC OUT
SDA
SCL
DIG GND
IF1+B
IF1 GND
S-METER
IF2 GND
SD
FM+B
PON
ACC DET
B.U DET
SCL
MUTE
SD
A
P CON
RESET
FWD/REV
MOTOR
Rch
COM
Lch
TAPE
MP IN
AM
MPX
OUT RR
OUT LR
OUT RF
LEVEL
SCL
SDA
OUT LF
STBY
MUTE
Rch
Lch
T-MUTE
FWD
REV
B.U
SMUTE
(FF/REW)
BU5V
AM+B
VDD 5V
PA
CK IN
ANT CON
BEEP
SVR
AMP. STBY
SVR
AC GND(BEEP)
Rch Lch
TAPE :1681mV
AM :546mV
FM :1781mV
8V
RF GND
OSC GND
IF2 +B
AUDIO OUT
8V
S-METER
SD
PLL-SCL
PLL-SDA
HEAD
R
55.6mV
BU5V
B.U
B.U.5V
8V
BU5V
AM: 170mV
FM: 400mV
L
PAC K
IN
PLAY
FF/REW
ILL
5
KS0-KS4
KI0-KI3
3
SEG1-SEG22 COM1-COM3
AMP. MUTE
8V
BU5V
(X16-)
M
A1
(X14-)
MOTOR SW
Q260,261
4
5
4
22
3
22

Kenwood KRC-165 Specifications

FM Tuner

frequency range (50kHz)	87.5MHz - 108.0MHz
frequency range (200kHz)	87.9MHz - 107.9MHz
usable sensitivity (S/N: 30dB)	9.3dBf (0.8 µV/75 Ω)
quieting sensitivity (S/N: 50dB)	15.2dBf (1.6 µV/75 Ω)
frequency response (±3.0dB)	30Hz-15kHz
signal to noise ratio	70dB(MONO)
selectivity	≥ 80 dB(±400 kHz)
stereo separation	40dB(1kHz)

AM Tuner

frequency range (9kHz)	531kHz - 1611kHz
frequency range (10kHz)	530kHz - 1700kHz
usable sensitivity (S/N: 20dB)	28 dBµ (25 µV)

Cassette Player

tape speed	4.76 cm/sec.
wow & flutter	0.12 % (WRMS)
frequency response (±3 dB)	30 Hz -14 kHz (120 µs)
separation	40 dB (1 kHz)
signal to noise ratio	52 dB

Audio

maximum output power	45 W x 4
full bandwidth power (at less than 1% THD)	22 W x 4
bass tone action	100 Hz ±10 dB
treble tone action	10 kHz ±10 dB
preout level / load	1800 mV / 10 kΩ
preout impedance	≤ 600 Ω

General Specifications

operating voltage	14.4 V
current consumption	10 A
installation size (W x H x D)	182 x 53 x 158 mm
weight	1.3 kg