KENWOOD GX-201SEF2 Service Manual

Cover page of KENWOOD GX-201SEF2 Service Manual

Service Manual for KENWOOD GX-201SEF2, downloadable as a PDF file.

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© 2003-8 CREATED IN JAPAN
B53-0087-00 (N) 0
6CD/CASSETTE & HEATER CONTROL RECEIVER
GX-201KEF2/LEF2
/REF2/SEF2
SERVICE MANUAL (TENTATIVE)
SCAN
MODE
A/C
OFF
TUNE
TRACK
COMPACT
DIGITAL AUDIO
B NR
CD
TAPE
CHR
BAND
DOLBY B NR
LOAD
MODE
A/C
OFF
TUNE
TRACK
COMPACT
DIGITAL AUDIO
B NR
CD
TAPE
CHR
BAND
VOL ADJ
LOAD
LOCAL
DX
SCAN
RDM
REG
ANTI-THEFT SYSETM
DOLBY B NR
COMPACT
DIGITAL AUDIO
MODE
A/C
OFF
TUNE
TRACK
VOL ADJ
LOAD
B NR
REG
LOCAL
DX
SCAN
RDM
CD
TAPE
CHR
BAND
DOLBY B NR
Panel assy
(
-
)*
SUBARU GENUINE
Model
Model Name
Parts No.
Destination
GX-201LE
GX-201LEF2
86201AG410
Europe (left-hand-drive cars)
GX-201RE
GX-201REF2
86201AG310
Europe (right-hand-drive cars)
GX-201KE
GX-201KEF2
86201AG210
Other Areas (right-hand-drive cars)
GX-201SE
GX-201SEF2
86201AG510
Other Areas (left-hand-drive cars)
MODE
A/C
OFF
TUNE
TRACK
CD
TAPE
CHR
BAND
SCAN
LOAD
COMPACT
DIGITAL AUDIO
B NR
DOLBY B NR
GX-201LEF2
GX-201REF2
GX-201SEF2
GX-201KEF2
Panel assy
(
-
)*
Panel assy
(
-
)*
Panel assy
(
-
)*
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.
The 6CD mechanism has not supplied repair parts for each part (for Optical Laser pickup, motor etc).
If you need repair to the 6CD mechanism please change to mechanism assy (D40-1170-15).
DC cord for service
: E30-3801-15
Antenna connector replacement cord for service : E30-6255-05
* Part number of panel assy is undecided.
background image
© 2003-8 CREATED IN JAPAN
B53-0087-00 (N) 0
6CD/CASSETTE & HEATER CONTROL RECEIVER
GX-201KEF2/LEF2
/REF2/SEF2
SERVICE MANUAL (TENTATIVE)
SCAN
MODE
A/C
OFF
TUNE
TRACK
COMPACT
DIGITAL AUDIO
B NR
CD
TAPE
CHR
BAND
DOLBY B NR
LOAD
MODE
A/C
OFF
TUNE
TRACK
COMPACT
DIGITAL AUDIO
B NR
CD
TAPE
CHR
BAND
VOL ADJ
LOAD
LOCAL
DX
SCAN
RDM
REG
ANTI-THEFT SYSETM
DOLBY B NR
COMPACT
DIGITAL AUDIO
MODE
A/C
OFF
TUNE
TRACK
VOL ADJ
LOAD
B NR
REG
LOCAL
DX
SCAN
RDM
CD
TAPE
CHR
BAND
DOLBY B NR
Panel assy
(
-
)*
SUBARU GENUINE
Model
Model Name
Parts No.
Destination
GX-201LE
GX-201LEF2
86201AG410
Europe (left-hand-drive cars)
GX-201RE
GX-201REF2
86201AG310
Europe (right-hand-drive cars)
GX-201KE
GX-201KEF2
86201AG210
Other Areas (right-hand-drive cars)
GX-201SE
GX-201SEF2
86201AG510
Other Areas (left-hand-drive cars)
MODE
A/C
OFF
TUNE
TRACK
CD
TAPE
CHR
BAND
SCAN
LOAD
COMPACT
DIGITAL AUDIO
B NR
DOLBY B NR
GX-201LEF2
GX-201REF2
GX-201SEF2
GX-201KEF2
Panel assy
(
-
)*
Panel assy
(
-
)*
Panel assy
(
-
)*
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.
The 6CD mechanism has not supplied repair parts for each part (for Optical Laser pickup, motor etc).
If you need repair to the 6CD mechanism please change to mechanism assy (D40-1170-15).
DC cord for service
: E30-3801-15
Antenna connector replacement cord for service : E30-6255-05
* Part number of panel assy is undecided.
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GX-201KEF2/LEF2/REF2/SEF2
2
When transporting the unit, 6CD-CH mechanism must be
put into the transport mode.
How to Achieve the Transport Mode
In order to achieve the transport mode, there should be no
disk and the mechanism nor should the mechanism be in the
waiting mode for disk loading.*
After displaying [NO DISC], turned off the ACC power source.
Keep the BU power source on.
* Non-waiting mode for disk loading
·Non-waiting mode for disk loading means the state where
the mechanism is displaying [NO DISC] and where the
mechanism shutter is closed.
·In other words, [NO DISC] is displayed 15 seconds after
the disk is taken out or when the shutter of the mechanism
is closed and [LOAD] key is pressed. (Pressing the [LOAD]
key causes the mechanism to enter the waiting and non-
waiting mode alternatively.)
· Pressing other source keys after taking all the disks out,
the mechanism shutter closes and it goes into non waiting
mode for disk loading. (At this point the display will indicate
the source selected and does not display [NO DISC].)
Transport Mode Condition
1. Rear Arm condition (This can be confirmed in the condition
where the mechanism cover is in place.)
2. Center Screw condition (By the external view of the mecha-
nism, it is possible to make judgment on this by the PLATE-
RACK pin position.)
CAUTION ON TRANSPORTING
The Reason to Put the Mechanism in theTransport Mode
1. Protection of Rear Arm
Putting the mechanism into the transport mode is a protec-
tion against the Rear Arm to get deformed from the vibra-
tion during transport or sudden fall. Deformity in the Rear
Arm may result in loss of strength for holding the disk in
place.
2. Protection against error at the time of initial search
Putting the mechanism into the transport mode is also a
protection against an error or mechanism lock when the
power is put on again. When the back up is turned off, plate-
rack pin could move from the vibration during transport or
sudden fall.
This would cause the system to go into an error detection
of the center screw is not in connection although, in fact, it
is in connected condition.
REAR ARM
PLATE-RACK PIN
PLATE-RACK PIN
Fig. 1
Transport mode
Fig. 2
Waiting mode for disk loading
Fig. 3
Transport mode
Fig. 4
Up/Down center screw connection condition
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3
GX-201KEF2/LEF2/REF2/SEF2
BLOCK DIAGRAM
(X25-929)
(X14- )
(X89-254)
(X87-3052-70)
FM/AM
ANT
DC/DC
AUDIO
HEAT CONTROL
DC/DC
SW
NAVI
FA/AM TUNER
(FRONT END)
SELECTOR
AM NOISE
CANCELLER
DC/DC
AVR
DC/DC
AVR
E-VOL/
FM 8V
AM 8V
AVR
AVR
POWER
AMP
IGN
DET
ILLM +/-
DET
6CD SERVO
AVR
AVR
CASSETTE
BU5V, AUDIO8V,
SIGNAL
PROCESSOR IC
RDS
MUTE
FIX-EQ
P-ANT
LED10V AVR
SW
5V
Q813
Q102
Q104
Q605
Q602
A1
A2
IC11
IC21
IC31
IC41
IC31-34
Q401,402
IC23
IC21
14
IC22
A3
IC12
W1
Q815
Q808
Q807
Q802,823,824
Q816
IC13,
J2
SYSTEM u-COM
IC81
J1
OSC
12.582MHz
X81
BZ81
BUZZER
IC82
RESET
BUS I/F
IC83
ACC DET
BU DET
X25
6CD MECHA
MECHA
CASSETTE
DOLBY (IC1)
J1
LED
ILLUMINATION
FL DISPLAY
AUDIO
KEY
MATRIX
I/F
UART
HEAT CONTROL
FL DISPLAY
PANEL
u-COM
25
ED2 or ED3
IC1
ED1
Q24,
X89
ONLY
2-72)
(2-71,
BU
ACC
ILLM +/-
P-ANT
SP
IGN
COMMUNICATION
UART
REAR
FRONT
AM
FM
(COMMUNICATION)
BUS
(AUDIO)
BUS
AIR-CONDITIONER
LEVEL DIAGRAM
AM : 215mV-rms
270mV-rms
0dB
-7.5dB
-1dB
0dB
0dB
CS : DOLBY LEVEL300mV-rms
CD : 1.2V-rms
CS : +8dB
CD : +6dB
FM : +7dB
: +5dB
CH
: +16dB
AM
CH : 1.2V-rms
NAVI : 1.2V-rms
-23.8dB
-1.5dB
-0.5dB
-2.5dB
+7.7dB
+26dB
+26dB
: +10.5dB
: +8dB
: +5dB
: +6dB
: +18dB
CD
CS
CH
FM
AM
500mV-rms
FM
TUNER
AM/NC
IC12
LPF
CASSETTE-MECHA
6CD-MECHA
IC24
ISO
SELE-
CTOR
MPX,
E-VOL,
BASS,
FAD,
BAL
MID
TRE,
EXT-UNIT
NAVI
SELECTOR
402
MUTE
FIX-EQ
IC31-34
IC23
IC22
IC21
AMP
IC41
FRONT
SP
REAR
SP
ANT
(CH 1W OUTPUT)
LEVEL DIFFERENCE OF EACH SAUCE
LOUD,
Q401,
FM
AM
REAR
FRONT
CH
6CD
CS
FM
AM
1kHz 75kHz dev.
315kHz 0dB
1kHz 0dB
1kHz 0dB
1kHz 30% mod.
0dB
-1dB
-16.5dB
-6dB
-18dB
GX-201KEF2
GX-201LEF2
GX-201REF2
1kHz 40kHz dev.
315kHz 0dB
1kHz 0dB
1kHz 0dB
1kHz 30% mod.
0dB
-1dB
-16.5dB
-8dB
-16dB
GX-201KEF2
GX-201REF2/LEF2
GX-201REF2/LEF2
GX-201KEF2
background image
GX-201KEF2/LEF2/REF2/SEF2
4
SYNTHESIZER UNIT (X14-694x-xx)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1
Cassette mechanism sub-motor IC
Cassette sub-motor power supply
IC11
FM diversity IC
FM diversity switching (Only for GX-201KEF2)
IC12
AM noise canceller IC
AM noise canceller
IC13
2-piece ope-amp
RDS noise amp (Only for GX-201LEF2/REF2)
IC14
RDS demodulation IC
RDS demodulation (Only for GX-201LEF2/REF2)
IC21
Ope-amp with switch
CD/Cassette switching
IC22
Electronic volume
BASS/MID/TRE, MPX, Mute, Electronic volume
IC23
Ope-amp with switch
Audio/NAVI switching
IC24
2-piece ope-amp
CD isolation amp, LPF
IC31~34
4-piece ope-amp
FIX-EQ
IC35
2-piece ope-amp
1/2 VCC output
IC41
Power amp
4ch power amp
IC81
System
µ-com
System control
IC82
Reset IC
System reset detection
IC83
I2C BUS IC
F-BUS communication
IC84
2-piece NOR circuit
For hard muting
IC85
EEPROM
Bug counter-measure
IC86,87
Inverter circuit
F-BUS control
Q1,2
Cassette mechanism main motor power supply switch
For cassette mechanism main motor
Q101
Diversity switch
When turned ON, turns diversity OFF (Only for GX-201KEF2)
Q102,103
FM power supply switch
When FM, 8V output
Q104,105
AM power supply switch
When AM, 8V output
Q106
IF count detection
When detecting IF count, Lo output
Q107
RDS data buffer
RDS data buffer output (Only for GX-201LEF2/REF2)
Q108
S-meter buffer
S-meter voltage output
Q151,152
Noise amp
Noise detection constant switching (Only for GX-201LEF2/REF2)
Q153
Noise amp
Noise detection output buffer (Only for GX-201LEF2/REF2)
Q202
Mute switch
For muting within electronic volume
Q401,402
NAVI mute
For NAVI muting at interruption
Q403
SVR switch
For SVR discharging
Q404
SVR switch
For SVR discharging at over voltage
Q601,602
Audio DC/DC power supply switch
For DC/DC audio
Q604,605
Heater DC/DC power supply switch
For DC/DC heater
Q606,607
DC/DC control switch
For switching internal frequency
Q650
Audio DC/DC power supply switch
For DC/DC audio
Q651
Heater DC/DC power supply switch
For DC/DC heater
Q801
Buzzer switch
For buzzer
COMPONENTS DESCRIPTION
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5
GX-201KEF2/LEF2/REF2/SEF2
Ref. No.
Application / Function
Operation / Condition / Compatibility
Q802
Illumination + detection
For illumination + detection
Q803
Reset output switch for F-BUS
When resetting F-BUS, Hi output
Q804
NAVI mute switch
When muting NAVI, Hi output
Q805
IF count detection
When detecting IF count, Lo output
Q806
P-ANT circuit control switch
When tuner, GND electric potential output
Q807
ACC detection
When ACC ON detection, Lo output
Q808
IGN detection
When IGN ON detection, Lo output
Q809
SYS_ON current buffer
When SYS_ON Hi, Lo output
Q810
Hard reset switch
When HARD_RESET ON, Lo output
Q812
BUS_OFF switch
When F-BUS system OFF, Hi output
Q813
P-ON5V power supply switch
For P-ON5V
Q815
BU detection
When BU ON, Lo output
Q816
P-ANT circuit control switch
When tuner, BU electric potential output
Q817,818
P-ANT circuit protection
P-ANT short circuit protection
Q820
F-BUS mute output
When mute ON, Hi output
Q821
BUS_ON detection
When F-BUS system ON, Hi input
Q822
BUS_ON switch
When F-BUS system ON, Hi output
Q850,852
Illumination - detection switch
When detecting illumination -, Hi output
Q853
Illumination - detection switch
When detecting illumination -, Lo output
SWITCH UNIT (X25-929x-xx)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1
Display control
µ-com
VFD control, Key intake
IC3
EEPROM
For bug counter-measures
Q1
Audio VFD5V switch
When audio VFD ON, 5V output
Q2
Audio VFD5V switch
When audio DC/DC ON, Lo output
Q4
Heater VFD5V switch
When heater VFD ON, 5V output
Q5
Heater VFD5V switch
When heater DC/DC ON, Lo output
Q11
F differential indicator power supply switch
When F-differential indicator ON, 5V output
Q12
R differential indicator power supply switch
When R-differential indicator ON, 5V output
Q21
Multiple-push reset circuit detection
When detecting REP/RDM, DWN_SEEK, Hi output
Q22
Multiple-push reset circuit detection
When resetting by multiple push, Lo output
Q23
Multiple-push reset circuit detection
When TONE (BAL/FAD) detected, Lo output
Q24
Heater UART communication control
Heater UART communication control (TX)
Q25
Heater UART communication control
Heater UART communication control (RX)
Q26
SW5V power supply switch
When IGN ON, 5V output
Q27
Panel illumination switch
When panel illumination ON, 10V output
COMPONENTS DESCRIPTION

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