Kenwood RDHD 5 MD Service Manual

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RDHnsmo/Hm KENWOOD

SERVICE MAN UAL
(HD'5MD/HD'7) ©2002-11 PRINTED IN KOREA

B51-5835-00 (K/K) 3430

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* Refer to parts list on page 41.
lllust. is RD-HDSMD.
In compliance with Federal Regulations, following are repro- KENWOOD Corp. certifies this equipment conforms to DHHS
duction of labels on, or inside the product relating to laser Regulations N021 CFR 1040. 10, Chapter 1, subchapter J.
product safety.
DANGER : Laser radiation when open and interlock defeated. .
. . . . . AVOID DIRECT EXPOSURE TO BEAM.
Caution : No connection of ground line If disassemble 7.

the unit. Please connect the ground line on 'V
rear panel, PCBs, Chassis and some others.

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RDeHDSMD(K)INT1P 02.11.185:09 PM \°~/2 /\

RD-HD5MD/HD7

CONTENTS / ACCESSORIES / CAUTIONS

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Contents
CONTENTS / ACCESSORIES / CAUTIONS

SCHEMATIC DIAGRAM

EXTERNAL VIEW ........................................ EXPLODED VIEW .
DISASSEMBLY FOR REPAIR / ADJUSTMENT. PARTS LIST ............................. .41
CIRCUIT DESCRIPTION. SPECIFICATIONS .................................................... 51

PC BOARD ......................

Accessories

AM loop antenna (1)
(T90-0903-08)

FM indoor antenna (1)
(T90-0904-08)

Remote control unit (1)
(A70-1625-08): RD-HDSMD(T)

Batteries (R6/AA) (2)

(A70-1626-08): RD-HDSMD(M), RD-HD7(V)
(A70-1629-08): RD-HD7(E,T)
(A70-1630-08): RD-HD7(K)

Cautions

Caution on condensation

Condensation (of dew) may occur inside the unit when
there is a great difference in temperature between this
unit and the outside.

This unit may not function properly if condensation oc-
curs. In this case, leave the unit for a few hours and
restart the operation after the condensation has dried
up.

Be specially cautious against condensation in a follow-
ing circumstances:

When this unit is carried from one place to another
across a large difference in temperature, when the hu-
midity in the room where this unit is installed increases,
etc.

Note related to transportation and

movement
Before transporting or moving this unit, carry out
the following operations.

0 Remove the CD from the unit.
9 Press the CDNII key.

9 Wait for some time and verify that the dis-
play appears as above.
0 Wait a few seconds and turn the unit OFF.

Memory backup function

Stored contents which are cleared immediately
when power plug is unplugged from power outlet :

Clock display
N.B. function

Stored contents which will back-up after power
plug is unplugged from power outlet:

State of power (on or standby), A, P, S, Last input
selection, AUX level, Volume control value, Balance
control, Receiving band, Frequency, Preset station,
Program Timer, TONE

Operation to reset

The microcomputer may fall into malfunction (impossibil-
ity to operate, erroneous display, etc.) when the power
cord is unplugged while unit is ON or due to an external
factor. In this case, execute the following procedure to
reset the microcomputer and return it to normal condi-
tion.

0 Please note that resetting the microcomputer clears
the contents stored in and it returns to condition
when it left the factory.

Unplug the power cord from the power outlet. then while
holdingthe set key on the main unit depressed, plug the power
cord again.

8);

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RDrHDSMD(K)INT1P 02.11.18 5:09 PM \°-/ 51

RD-HDSMD/H D7

SPECIFICATIONS

51

Main unit
[Amplifier section]

(For U.S.A. and Canada)
Rated output power during STEREO operation (FTC)

22 watts per channel minimum RMS, both channels
driven, at 6 $2 from 40 Hz to 20 kHz with no more
than 0.7% total harmonic distortion.

(For U.K. and Europe)
Effective output power during STEREO operation

(1 kHz, 10% T.H.D., at6W) .................. 35W+35W
Rated output power during STEREO operation (DIN)

(1 kHz, 0.7% T.H.D., at 6 £2) ................... 25W + 25 W
Total harmonic distortion

(1 kHz, 17.5W, at 6 £2) ..................................... 0.008%
Frequency response .......... 30Hz ~ 100kH2 (+OdB, ~3dB)
[CD player section]

Laser .......................................... Semiconductor laser
D/A Conversion .................................................................
1 Bit D/A converter achieving a 24bit resolution

Over sampling .................................. 8 fs (352.8 kHz)
Frequency response 20Hz ~ 20kHz (+0.5dB, -1dB)
Signal to noise ratio .. 98dB
Digital output
Optical

.. ~15dBm ~ ~21dBm

[Tuner section]

FM tuner section
Tuning frequency range ............. 87.5 MHz ~ 108 MHz

AM tuner section
(For U.S.A. and Canada)

Tuning frequency range ............. 530 kHz ~ 1,700 kHz
(For U.K. and Europe)
Tuning frequency range ............. 531 kHz ~ 1,602 kHz

HOW TO READ THE PARTS LIST

[General]
Power consumption ................................................. 80 W
Dimensions ................................ W: 220 mm (8-11/16")
H :145 mm (5-11/16")
D :356 mm (14)
Weight (net) ............................................. 5.9 kg (13.0 lb)
Speakers
Enclosure ......... Bass-reflex type (Magnetically shielded)
Speaker configuration
Woofer ..... . 120 mm, cone type
Tweeter .. 25 mm, dome type
Impedance .................... 6 £2
Maximum input power... ...60 W
Dimensions ..................................... W: 155 mm (6-1/8)

H : 270 mm (10-5/8")
D : 263 mm (10-3/8")
Weight (net) .................................... 4.5kg (9.9 lb) (1 piece)

IN otésI

KENWOOD follows a policy of continuous ad-

vancements in development. For this reason

specifications may be changed without notice.

0 Sufficient performance may not be exhibited
at extremely cold locations (where water
freezes).

ABBREVIATION OF MODEL AND MASS PRODUCTION'S DESTINATIONS

MODEL ABB. Australia Canada China England Europe Germany Korea Malaysia
RD-HDSMD - - - 5 - - - -
RD-HD7 - - - 7 E - - -

MODEL ABB. Mexico PXIAAFES Russia Scandinavia Shanghai USA Other area
RD-HDSMD - - - - - - M
RD-HD7 - - - - V K -