Kenwood KRA 2080 Service Manual

Page 1

RMRiiZT5§B7K§BEéV5/7l4080/A5080 KENWOOD

SERVICE MANUAL

© 1996-4/351-5169-00 (K/K) 3962

KENWOOD badge Front glass " Knob
(343-0302-04) (310-) (K29-6322-04)
KENWOOD

LEM: m mm mum NEDEWER Human

Knob Knob Knob

(BUTTON POWER) (LOUDNESS) (K29-6323-12)

(K27-2185-04) (K29-6321-04)
Phono iack * Miniature phone jack (2P) Power cord bushing
(E63-) (E1 1-0188-05) (J42-0083-05)

A

_
\

Lock terminal board AC outlet " AC power cord
(E03-) (E30-)

Lock terminal board
(E70-0068-05)

(E70-)

Illustration is KR-A3080.
* Refer to parts list on page 33.

Page 2

KR-A2080/A3080/A4080/A5080

CONTENTS / ACCESSORIES / CONTROL

Contents
CONTENTS/ACCESSORIES / CAUTION 2 WIRING DIAGRAM
REMOTE CONTROL UNIT... 3 PC BOARD ..............
EXTERNAL VIEW ................ 4 SCHEMATIC DIAGRAM. . 19
DISASSEMBLY FOR REPAIR . 5 EXPLODED VIEW .31
BLOCK DIAGRAM ............ 6 PARTS LIST ..........
CIRCUIT DESCRIPTION 7 SPECIFICATIONS
ADJUSTMENT ...................... .. 13
Accessofies
.. ..... AM loop antenna (1) """"""""""""""""1
(T 90-01 95-05) Loop antenna stand (1) FM indoor antenna ( 1)
(J19-3645-05) (T 90-0301 -05) K,P,M,C.X

(T90-0810-05) T,E

L

AC plug adapter (1) ' Use to adapt the plug on the power
(E03-0115-05) cord to the shape of the wall outlet.
(Accessory only for regions where use

is necessary.)

Caution

SWITCHING FHOM[XS8] TO [SL 16]

You can easily change the system control mode with the following operation. Do this operation after completing allconnec-
tions.

Switching to [ SL16] : Hold down the AUTO key and switch the MAIN POWER key from OFF to ON.
Switching back to [ X88] : Hold down the BAND key and switch the MAIN POWER key from OFF to ON.

' This operation will not affect items stored in the memory.

Note : The system control mode will revert to [ X88] if the unit is not turned on lor three consecutive days. If you would like
to make the unit completely (and permanently) [ SL16 ]compatible, please consult your nearest retailer orthe Ken-
wood Marketing Department.

' There is the U-Com (hard) match method.

Page 58

CSZ 0

can 0.

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DECODER
ANTIBiRDIE

STEREO DRivE

STEREO
sw

PILOT
DET

PHASE DET

t
I i
LSOSI }
t

.
'{rrroJ

DISCRIMI NATOR

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o 027

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n
v
0

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9 w

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6 Nov

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OFF 3 7v
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DET our
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ATT

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SIGNAL LINE
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KR-V7080/V8080f2/5)

AK AL

CAUTION: For continued safety. replace safety critical components only with
manufacturers recommended pans (refer to parts list). A indicates safety critical
components. For continued protection against tlSK of fire, replace only with same
type and rating luse(s). To reduce the risk of electric shock, leakage-current or
resistance measurements shall be carried out (exposed parts are acceptably
insulated from the supply Circuit) before the appliance is returned to the customer.

The DC voltage is an actual reading measured with a high impedance type
voltmeter as the AM/FM Signal generator is specified to the conditions as shown in
the list below. The measurement value may vary depending on the measuring
instruments used or on the product The value shown in ( ) is actual reading
measured in the AM rnode,

MODULATION
MODE CARRIER ANT INPUT
FREQUENCY DEVIATION
RM 98MHz 1kHz STEREO 67.5kHz 7.5kHz(Pilot) GOdB
AM 1000(999)kHz 400Hz MONO 30% MOD GOdB

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