Block Diagram; Level Diagram - Kenwood GX-201KEF2 Service Manual

QQ
3 7 63 1515 0
(X14- )
W1
FM/AM
ANT
A3
(2-71, FA/AM TUNER
(FRONT END)
2-72)
ONLY
IC13,
14 IC21
RDS SELECTOR
(X25-929)
TE
L 13942296513
X89
LED
ILLUMINATION
ANT
TUNER
CASSETTE-MECHA
CS : DOLBY LEVEL300mV-rms
www
6CD-MECHA
CD : 1.2V-rms
EXT-UNIT
.
CH : 1.2V-rms
NAVI
NAVI : 1.2V-rms

BLOCK DIAGRAM

(X89-254)
IC31 IC21
6CD SERVO CASSETTE
AVR AVR
Q602
DC/DC
AVR
IC12
AM NOISE
A1
CANCELLER
DC/DC
AUDIO
IC22
IC23
E-VOL/
FRONT
NAVI
SIGNAL
SW
PROCESSOR IC
REAR
6CD MECHA
(X87-3052-70)
DOLBY (IC1)
X81
OSC
CASSETTE
12.582MHz
MECHA
ED1
AUDIO KEY
FL DISPLAY MATRIX

LEVEL DIAGRAM

FM
500mV-rms
GX-201KEF2
GX-201REF2/LEF2 270mV-rms
FM
IC12
AM : 215mV-rms
AM/NC
AM
0dB
LPF
-7.5dB
IC21 IC22
SELE-
CTOR
MPX,
LOUD,
0dB
E-VOL,
BASS,
IC24 TRE,
MID
ISO 0dB
x ao
-1dB
y
i
GX-201KEF2/LEF2/REF2/SEF2
8
IC11
BU5V, AUDIO8V,
LED10V AVR
X25
Q605 Q104 Q102
DC/DC AM 8V FM 8V SW
AVR AVR AVR 5V
A2
DC/DC
HEAT CONTROL
IC41
Q401,402 IC31-34
POWER
MUTE FIX-EQ
AMP
IC81
SYSTEM u-COM
IC82 BZ81
RESET BUZZER BUS I/F
Q Q
3 6 7 1 3
IC1 ED2 or ED3
PANEL HEAT CONTROL
u-COM FL DISPLAY
LEVEL DIFFERENCE OF EACH SAUCE
(CH 1W OUTPUT)
GX-201REF2
GX-201KEF2
GX-201LEF2
1kHz 30% mod.
AM
CD : +6dB CD : +6dB
FM 1kHz 75kHz dev.
CS : +8dB CS : +8dB
CS 315kHz 0dB
CH : +5dB CH : +5dB
6CD 1kHz 0dB
FM : +7dB FM : +10.5dB
AM : +16dB AM : +18dB CH 1kHz 0dB
IC23
SELECTOR
Q401,
FRONT
-1.5dB
402
FAD, MUTE
BAL
-23.8dB
-0.5dB
REAR
u163
.
2 9 9 4 2 8
J1
Q813
Q808
Q815
IGN
BU DET
DET
Q807
ACC DET
Q802,823,824
ILLM +/-
DET
Q816
P-ANT
J1
IC83
1 5 0 5 8 2 9 9 4
Q24,
25
UART
I/F
GX-201KEF2 GX-201REF2/LEF2
1kHz 30% mod.
-18dB
-6dB 1kHz 40kHz dev.
-16.5dB 315kHz 0dB -16.5dB
-1dB 1kHz 0dB
0dB 1kHz 0dB
IC31-34 IC41
FIX-EQ
AMP
+7.7dB +26dB
m
co
-2.5dB +26dB
9 9
IGN
AIR-CONDITIONER
UART
COMMUNICATION
J2
BU
ACC
ILLM +/-
P-ANT
SP
BUS
(COMMUNICATION)
BUS
(AUDIO)
2 8 9 9
-16dB
-8dB
-1dB
0dB
FRONT
SP
REAR
SP
3