Kenwood KRFV 7020 E Service Manual

Page 1

K

AUDIO VIDEO SURROUND RECEIVER V
KRF-V5020/V5020E/V5020W/V5020(S) KE NWOOD
V6020/V6020E/V6020W/
V7020/V7020E/V7020W/
VR-305/306/355

S E RV I C E MAN UAL ©1998-12/351-5497-00 (K/K) 3444

On the Block diagram, backup data, Initial state and system microprocessor, refer to the KRF-V5010
service manual (B51-5425-00)

KRF7V5020(K) COVER1,1( 99.10.27 5:39 PM \°-/2 /\

KENWOOD badge Knob Front glass
(B43-0302-04) (K29-) (810-3425-02)

r\
\/

Phone Jack
(E11-)

Miniature phone jack (2P) Phono jack
(E11-) Phono jack(3Px2) 0563-)
Slide switch (563') Look terminal board Power cord bushing AC power cord
(882-0034-04) (E70-) (J42-0083-05) (E30-)
\,

Lock terminal board Phonojack(4Px2) Phono Jack Phono jack Look terminal board AC outlet Metallic cabinet
(E70-) (E63-) (E63-) (E83-0114-05) (E70-) (503-) (A01 -)

Phono jack

(E63-)

Illustration is KRF-V5020.
* Refer to parts list on page 23~.

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KRFEV5020(K) COVER1,1( 99.10.27 5:39PM \°~/3 /\

KRF-V5020/V6020/V7020/VR-305/306/355

CONTENTS / ACCESSORIES

Contents

CONTENTS / ACCESSORIES ........
DISASSEMBLY FOR REPAIR

SCHEMATIC DIAGRAM.
EXPLODED VIEW

ADJUSTMENT ..... PARTS LIST.

WIRING DIAGRAM. SPECIFICATIONS .......
PC BOARD .............

Accessories

FM indoor antenna (1)
(T90-0836-05)

AC plug adaptor (1)
(E03-0115-05)

*Use to adapt the plug on the power
cord to the shape of the wall outlet.
(Accessory only for Ieglons where use
is necessary.)

Loop antenna stand (1)
(J19-3645-05)

Remote control unit (1) Batteries (R03/AAA) (4)

RC-R0710/R0711

Remote control unit (1)
RC-R0508/R0608

Batteries (ROS/AA) (2)

ti.

I lOiOl $19 5

Model name vs remote controller

(3 Remote Controller
Model Destinations Parts number Model name Battery Cover
KRF-V502O l5, M5, X5, Y5 A70-1264-05 RC-R0711 A09-1123-08
KRF-V5020 E1 A70-1265-05 RC-R0710 A09-1123-08
KRF-V502O T5 A70-1265-05 RC-R0710 A09-1123-08
KRF-V5020(S) E2 A70-1265-05 RC-R0710 A09-1123-08
KRF-V5020E E3 A70-1265-05 RC-R0710 A09-1123-08
KRF-V5020W Qs A70-1265-05 RC-R0710 A09-1123-08
KRF-V602O C6, l6, M6, X6 A70-1264-05 RC-RO711 A09-1123-08
KRF-V6020 E4 A70-1275-05 RC»R0508 A09-0366-08
KRF-V6020E E5 A70-1265-05 RC-R0710 A09-1123-08
KRF-V6020W 06 A70-1265-05 RC-R0710 A09-1123-08
KRF-V7020 E7, T7 A70-1275-05 RC»R0508 A09-0366-08
KRF-V7020E E8 A70-1275-05 RC-R0508 A09-0366-08
KRF-V7020W Q7 A70-1275-05 RC-R0508 A09-0366-08
VR-305 K2, P2 A70-1264-05 RC-R0711 A09-1123-08
VR-306 K1, P1 A70-1264-05 RC-R0711 A09-1123-08
VR-355 K3, P3 A70-1271-05 RC-R0608 A09-0366-08

Resetting the Microcomputer

lfthe microcomputer may mallunction (unit cannot be operated,
or shows an erroneous display) it the power cord is unplugged
while the power is ON, or due to some other external lactor. If this
happens, execute the lollowing procedure to reset the micro-
computer and return the unit to its normal operating condItion.

For U.S.A. and Canada

For other countries

With the power cord plugged in, turn the POWER key
OFF, Then, while holding down the ON/STANDBY key,

press POWER.

Unplug the power cord from the wall outlet, then plug it
back in while holding down the POWER key.

- Please note that resettIng the microcomputer will clear the contents
ol the memory and returns the unit to the state It was in when It left the
factory.

Page 30

KRF7V5020(K) COVER1,1( 99.10.27 5:39 PM \°~/1

+
KRF-V5020N6020/V7020/VR-305/306/355

SPECIFICATIONS

For U. S. A and Canada

AUDIO section

Rated power output during STEREO operation
VR-305

100watts perchannelminimum RMS, both channelsdriven, at
a £2 lrom 40 Hz to 20 kHz with no more than 0.7% total
harmonicdistortion.(FTC)

VR-305, VR-355

50 watts per channel minimum RMS, both channels driven, at
B Q lrom 40 Hz to 20 kHz with no more than 0.7% total
harmonicdistortion.(FTC)

Ellective power output during SURROUND operation
VR-305
FRONT (tkHz, 0.7% T.H.D. at 8 52 one channel driven)
.. .....100W+100W
CENTER (1 kHz, 0.7 A, T.H.D. at 6 9. one channel driven)
.. .. 100 W
SURROUND (1 kHz, 07% T .D. at B (2 one channel driven)
00 W + 100 W

VR-305, VR-355

FRONT (1kHz, 0.7% T.H.D. at 8 52 one channel driven)

.. .. 80 W + 80 W
CENTER (1 kHz, 0.7% T.H.D. at B {2 one channel driven)

.. . 80 W
SURROUND (1 kHz, 0.7% T .D. at a (2 one channel drlven)
.. ..... 80 W + 80 W

Total harmonic distortion
Frequency response
CD
Signal to noise r
FHONO (MM) .
CD .
Input sensitivity / Impedance
FHONO (MM) .
CD .

0.05% (1 kHz, 40W, 3 £2)

10 HZ ~ 60 kHz, +0 dB, -8.0 dB

o (IHF'SG)

.200 mV/47 k!)

DVD .200 mV/10kfl
Output level / impedance

TAPE REC 200 mV / 2.2 kg

FREOUT (SUBWOOFER) ....2 V/2.2 kfl
Tone control

BASS. :10 dB (at 100 Hz)

TREBLE :10 dB (at 10 kHz)

VIDEO section

VIDEO inputs / outputs

VIDEO (composite) ..... ...1 Vp-p/75 n

FM tuner section
Tuning lrequency rang
Usable sensitivity (MO )

.. 1.6 75 Q)/ 15.2 dBl (75 kHz DEV., SINAD 30 dB)

67.5 MHZ ~ 106 MHz

31.5 nv (75 ml 41.2 dBt
Total harmonic d tortion (1 kHz)
MONO ..
STEREO
Signal to n se r
MONO
STERE
Stereo separation (1 kHz
Selectivity (:400 kHz
Frequency response

06% (95 dBl input)
.7°/. (65 dBl input)

(1 kHz, 75 kHz DEV.)

75 dB (65 dBf input)
63 dB (55 dBf input)
as as
65 dB
30 Hz - 15kHz, +0.5 dB, -3.0 dB

AM tuner section

Tuning lrequency range

10 kHz step ...530 kHz ~ 1,700 kHz

Usaole sensi vity (30% mod. /N 20 dB)

16 nv r (600 )tV/m)

50 (13
GENERAL
Power consumpt n
VR-306 2.6A
VR-305, VR-355 2.2 A
AC outlet
SWITCHED . 2 (total 150 W, 1.25 A max.)
Dimensions.... W : 440 mm (17-5/16")
H :144 mm (5-11/16")
D :390 mm (15-3/6")
Weight (Net)
VR-306 .

VR-305, VR»355

Notes

1. KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed Without notice.
2. The lull performance may not be exhibited in an extremely coid location (under a water-freezing temperature).

Note:

Component and circuit are subject to modification to insure best operation under differing local conditions. This manual is based on General
market(M) standard, and provides information on regional circuit modification through use of alternate schematic diagrams, and information on

regional component variations through use of parts list.

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