Kenwood GX-201KNF2, GX-201LNF2 Service Manual

CD RECEIVER

GX -201 KNF2/LNF2

/SNF2

SERVICE MANUAL (TENTATIVE

SUBARU GENUINE

GX-201LNF2

Model Model Name Parts No. Destination
GX-201LN GX-201LNF2 86201AG420 Europe (left-hand-drive cars)
GX-201KN GX-201KNF2 86201AG220 Other Areas (right-hand-drive cars)
GX-201SN GX-201SNF2 86201AG520 Other Areas (left-hand-drive cars)

)

Panel assy
( - )*

© 2003-8 CREATED IN JAPAN
B53-0089-00 (N) 0

GX-201SNF2

Panel assy
( - )*

GX-201KNF2

* Part number of panel assy is undecided.

The knobs with numbers larger than 700 on exploded view are not supplied for
service parts because it is difficult to apply grease.
Please change to panel assy (PA1) when you need repair to the knob.

DC cord for service : E30-3801-15
Antenna connector replacement cord for service : E30-6255-05

Panel assy
( - )*

GX-201KNF2/LNF2/SNF2

BLOCK DIAGRAM

(X14-920)

W1

FM/AM
ANT

LED+B
AVR

Q309Q305

CD SERVO
AVR

Q313

AUDIO8V
AVR

Q304

BU5V
AVR

AM

A3 IC12

FA/AM TUNER
(FRONT END)

FM

IC11

FM
DIVERSITY

Q315 Q314

LCD
BACK-LIGHT ILLUMINATION

AM NOISE
CANCELLER

IC21

E-VOL/
SIGNAL
PROCESSOR IC

CD MECHA

(X25-970)

KEY
ILLUMINATION

X14

LCD
BACK-LIGHT

X25

KEY
AVRAVR

GX-201LNF2 ONLYGX-201KNF2 ONLY

X81

IC14

RDS

OSC

12.582MHz

IC2,3

MULTIPLEX
RESET

AVR AVR

IC81

SYSTEM u-COM

IC82

RESET

KEY
MATRIX

FMAM

IC41

POWER
AMP

LCD
DRIVER

SW
5V

Q813Q102Q104

Q815

BU DET

Q807

ACC DET

Q802,850,851

ILLM +/­DET

Q816

P-ANT

ED1IC1

LCD

J2

BU

ACC

ILLM +/-

P-ANT

SP

LEVEL DIAGRAM

ANT

A3

TUNER

GX-201LNF2
GX-201KNF2

GX-201SNF2

CD-MECHA

CD : 1.2V-rms
(1kHz 0dB)

AM : 215mV-rms
(1kHz 30%mod.)

AM

FM

FM

270mVrms
(1kHz 40kHzdev.)

500mVrms
(1kHz 75kHzdev.)

LPF

-3.5dB

IC12

AM/NC

0dB

IC22

MPX,
LOUD,
E-VOL,
BASS,
TRE

GX-201LNF2

FM : +12dB
CD : +13dB

: +14dBAM

2

LEVEL DIFFERENCE of EACH SAUCE
(FM 0.5W OUTPUT)

1kHz 0dB

CD

400kHz 30% mod.

FM

400kHz 30% mod.

AM

-3.5dB

LPF

IC41

FRONT

FAD,
BAL

REAR

GX-201KNF2
GX-201SNF2

: +13dB

AM

: +11dB

FM

: +14dB

CD

AMP

+26dB

+26dB

+20dB

0dB
0dB

FRONT
SP

REAR
SP

GX-201KNF2/LNF2/SNF2

COMPONENTS DESCRIPTION

● SYNTHESIZER UNIT (X14-920x-xx)

Ref. No. Application / Function Operation / Condition / Compatibility

IC11 FM diversity IC FM diversity switching
IC12 AM noise canceller IC AM noise canceller
IC13 Ope-amp RDS noise amp
IC14 RDS decoder RDS decode
IC21 Electronic volume BASS/TRE, MPX, Mute, Electronic volume and BAL/FAD
IC31 3-terminal regulator AUDIO8V AVR reference voltage
IC41 Power amp 4ch power amp
IC81 System µ-com System control
IC82 Reset IC System reset detection
IC84 2-piece NOR circuit For hard muting
IC85 EEPROM Bug counter-measures
Q101 Diversity switch When turned ON, turns diversity OFF
Q102 FM+B switch FM+B output
Q103 FM+B switch When turned ON, FM+B output
Q104 AM+B switch AM+B output
Q105 AM+B switch When turned ON, AM+B output
Q106 IFC switch When turned ON, station is found
Q107 RDS data buffer RDS data buffer output
Q108 S-meter buffer S-meter voltage output
Q151,152 Switching constant at noise detection ON during reception
Q153 Noise amp Noise detection output buffer
Q202 EVOL mute When turned ON, mute
Q301 LED+B AVR switch When turned ON, LED+B output
Q302 SERVO+B AVR switch When turned ON, SERVO+B output
Q304 BU5V AVR BU5V AVR
Q305 LED+B AVR LED+B AVR
Q306 BU5V AVR BU5V AVR
Q309 SERVO+B AVR SERVO+B AVR
Q310 LED+B AVR LED+B AVR
Q312 AUDIO8V AVR switch When turned ON, AUDIO8V output
Q313 AUDIO8V AVR AUDIO8V AVR
Q314 Key illumination power switch When turned ON, key illumination power voltage output
Q315 LCD backlight power switch When turned ON, LCD backlight power voltage output
Q403 SVR discharge switch When turned ON, SVR discharge
Q801 Watchdog forced resetting switch When turned ON, reset
Q802 ILL+ switch Comes ON when small is turned ON
Q803 Hard muting switch Comes ON when reset.

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