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MICRO HiFi COMPONENT SYSTEM
www.freeservicemanuals.info
RD-M52MD/M72MD
SERVICE MANUAL
(HM-582MD/682MD/782MD)
Knob
(K29-7772-14)
Indicator
(B12-0394-04)
Front glass
(B10-3585-03)
Dressing panel
(A21-3864-03)
In compliance with Federal Regulations, following are repro-
ductions of labels on, or inside the product relating to laser
product safety.
Magnet catch
(J52-0043-05)
t i m e r
m i c r o h i - f i c o m p o n e n t s y s t e m
Digitized in Heiloo the Netherlands
© 2000-6/B51-5625-00 (K/K) 2320
Knob
(K29-7769-03)
volume/
multi-control
d i s c l o a d i n g m e c h a n i s m
P U S H
Illustration is RD-M52MD-L.
KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
1/20/2020
Magnet catch
(J52-0043-05)
Knob
(K29-7773-04)
Panel
(A29-1095-04)
Knob
(K29-7770-13)
Door assy
(A52-0392-02)
70%
Not for sale!
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Summary of Contents for Kenwood RD-M52MD
- Page 1 (A52-0392-02) Illustration is RD-M52MD-L. In compliance with Federal Regulations, following are repro- KENWOOD-Corp. certifies this equipment conforms to DHHS ductions of labels on, or inside the product relating to laser Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.
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Page 2: Table Of Contents
RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 CONTENTS / ACCESSORIES / CAUTIONS Contents CONTENTS / ACCESSORIES / CAUTIONS..... 2 PC BOARD .............. 12 EXTERNAL VIEW ............3 SCHEMATIC DIAGRAM .......... 17 CIRCUIT DESCRIPTION ..........4 EXPLODED VIEW ............31 ADJUSTMENT ............10 PARTS LIST..............35 PARTS DESCRIPTIONS ..........11 SPECIFICATIONS ............45... -
Page 3: External View
RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 EXTERNAL VIEW Lock terminal board Pin jack Pin jack Optical receiving module (E70-0053-05) (E63-0164-05) (E63-1082-05) (W02-2731-05) SERIAL NO. SPEAKERS ( 6-16 Ω ) (TAPE/MD) OU T WOOFER PRE OUT DIGITAL IN OPTICAL 75Ω ANTENNA AC power cord *... -
Page 4: Circuit Description
RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 CIRCUIT DESCRIPTION 1.Initializing the CD/MD Receiver 1-1Initialization Method The CD/MD receiver will be initialized when you pressed [SOUND] key and turn the AC on. 1-2 Contents of Initialization 1 MD disc wil not be ejected from MD mechanism. - Page 5 RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 CIRCUIT DESCRIPTION 3-2 Pin Description of Microprocessor Pin No. Pin Name Description 8SW2 Detection port of 8cm disc for CD mechanism. SCLK Clock output to DSP IC(X29,IC9). SENS Sense input port from DSP IC(X29,IC9). FAN/DA Control port of fan motor.
- Page 6 RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 CIRCUIT DESCRIPTION Pin No. Pin Name Description PLL CE PLL chip enable. Connected to ground. PLL DO PLL IF count input. EMP/MONO Control port of DE-emphasis. AMUTE Audio muting control. SPRLY Speaker relay control. PWRRLY Power relay control.
- Page 7 RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 CIRCUIT DESCRIPTION 5 Initializing the MD Mechanism 6-6 Continuous Playback Mode 1. Setting of Continuous Playback Mode 5-1 Initialization Method Display/Function While pressing the MD [PLAY/PAUSE] key and MD 1 Volume/ multi-control Select [CPLAY MODE] [EJECT] key simultaneously, Load disc turn the AC on.
- Page 8 RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 CIRCUIT DESCRIPTION 7. Electrical adjustment 7-5 Offset Adjustment 7-1 Precaution during confirmation of Laser Diode Display/Function emission 1 Volume/multi-control Select [TEMP ADJU] 2 PLAY [TEMP=xx (yy)] During adjustment, do not view the emission of a laser (xx=compensation data, yy=setting temperature) diode from just above for confirmation.
- Page 9 RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 CIRCUIT DESCRIPTION 7-7 EF Balance(Traverse Adjustment) 7-8 Focus Bias Adjustment Connection : Use the special disc(continuous recorded disc) Oscilloscope Display/Function 1 Volume/multi-control Select [FBIAS ADJU] Load the disc. ADJUSTMENT 3 PLAY [a=xx yyyy/] point a (xx=focus bias, yyyy=C1error) 4 Volume/multi-control Adjust "yyyy"...
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Page 10: Adjustment
RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 ADJUSTMENT CD section INPUT OUTPUT CD PLAYER ITEM ALIGNMENT ALIGN FOR FIG. SETTINGS SETTINGS SETTINGS TEST MODE : While pressing the CD PLAY/PAUSE key ,plug the power cord into the AC power wall output. Load the TEST DISC. -
Page 11: Parts Descriptions
RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 PARTS DESCRIPTIONS Digitized in Heiloo the Netherlands Not for sale! -
Page 12: Pc Board
www.freeservicemanuals.info 1/20/2020 PC BOARD (Component side view) X33-1190-0X (J70-1311-12) C161 C141 C153 C160 R119 C114 R124 R118 R116 C120 R161 R122 C163 C125 R120 C127 C126 R126 R163 R128 R130 C105 R129 R117 R105 C142 R162 R106 C143 W108 C134 C164 C131 R185... - Page 13 www.freeservicemanuals.info 1/20/2020 PC BOARD (Component side view) X07 D/5 X07 C/5 X07-3180-00 A/5 (J70-1400-11) Q103 W301 W202 R220 C216 R224 C218 R221 R115 C205 R122 C105 X07 B/5 R201 R257 W201 R206 R249 C254 C253 +5.1V AVR. C209 C219 C256 R253 C210 R204...
- Page 14 www.freeservicemanuals.info 1/20/2020 PC BOARD (Component side view) X29-2700-00 (J70-1405-11) C171 C172 R221 TUNER R223 R222 C186 C143 R207 C139 R138 R102 R139 IC12 C132 C131 C134 C133 C138 C130 C129 C135 C128 R204 R203 C127 R202 R201 C147 C148 C126 C125 C109 C120...
- Page 15 UNIT 3.2V 3.3V COUNTRY ABB. ON/OFF U.K. EUROPE 0-01 3.1V 3.2V R162 R161 KOREA 3.3V 2.2K 2.2K 2.5V 0.2V RD-M52MD-L/S (X33-1190-02) 5.1V HEAD DESTINATION UNIT 2.8V DRIVER COUNTRY ABB. U.K. T,T2 REC: MAX4.5V 2.5V C181 EUROPE 0-02 3.3V 100u6.3 R164 KOREA 1.8V...
- Page 16 +3.3V +3.3V +3.3V(OUTPUT) HGND 26 H+5V RD-M52MD-L (1/3) CAUTION: For continued safety, replace safety critical components only The DC voltage is an actual reading measured with a high with manufacturer's recommended parts (refer to parts list). indicates impedance type voltmeter. The measurement value may vary safety critical components.
- Page 17 www.freeservicemanuals.info 1/20/2020 (X29-270X-XX) 2SA992 2 2SD863 2SC1845 2SC3940A TUNER PACK (AM/FM) RXD-M52-L (X29-270X-XX) DESTINATION C107,108,117,118,152, C111, C139, Q12, R16-18,63,64,116, R117,231, UNIT No. C151 C154 IC3,4 IC14 R118 R119 R120 R121 R122 R123 W8,31 165,167,169,252,254 147,241,242 232,237,238 COUNTRY ABB. U.S.A. 0-11 GENERAL MARKET W02-2741 0-21...
- Page 18 www.freeservicemanuals.info 1/20/2020 (X29-270X-XX) 7.1V IC10 6.8V 6ch BTL +3.3V AVR 5.1V DRIVER (CD) 3.3V (BOTTOM VIEW) 6.2V 7.0V 3.6V Q14,15 TRACKING BIAS 3.3V VOLTAGE VOLTAGE 5.0V V : 3.5V H : 3.6V (CD SENS) CHANGE- VOLTAGE OVER VOLTAGE (CD SCOR) 220P (CD SQSO) V : 0V...
- Page 19 MD VERSION : 5.1V DECK VERSION : 12.1V MD VERSION : 5.1V +12V +12V DECK VERSION : 12.0V +12V +12V MD VERSION : 5.1V DECK VERSION : 12.0V RD-M52MD-L (2/3) RD-M52MD/M72MD Y39-3490-51 Digitized in Heiloo the Netherlands Not for sale!
- Page 20 www.freeservicemanuals.info 1/20/2020 X29- (X07-3XXX-XX) (A/5) 23.4V (BOTTOM VIEW) POWER AMP RELAY DRIVER R223 R222 4.7K POWER IC MUTING -25.7V A1 (W02-2732) 5.0V W210 5.1V OPT OUT R224 R240 R259 W211 25.4V 2.2K W212 1/4W R270 2.2K 330 1W AUDIO L 3.3K 4.4V 0.22 2W...
- Page 21 1/20/2020 (X07- ) (E/5) LCD ASS’Y CN14 CN15 RD-M72MD (X07-3182-73)/RD-M52MD-S (X07-3182-74) DESTINATION UNIT R124, R135, R256, C7, C29, C31, C106 R239 R249 R250 136,258 COUNTRY ABB. 0.47 U.K. EUROPE 2-73 T800mA TEST9 L07-2858-05 56 1/4W 22 1W 0.22 KOREA...
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Page 22: Exploded View
RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 EXPLODED VIEW(CD MECHANISM) SCREW N09-5129-08 N89-2606-46 N09-5113-08 N19-1105-04 N09-3366-08 CDM-34 Parts with exploded numbers larger than 700 are not supplied. Digitized in Heiloo the Netherlands Not for sale! - Page 23 RD-M52MD/M72MD www.freeservicemanuals.info 1/20/2020 EXPLODED VIEW(MD MECHANISM) RH MD PU MD X29 (B/2) LM MD FM MD DM MD X29 (A/2) M2x3.5 N86-2004-46 2.6x10 N09-2817-05 N09-4154-05 M1.7x2 N09-3104-05 M1.7x3 N09-3279-05 M1.7x4.5 N39-1745-46 X33-1190-01/02 MDM-06 Parts with exploded numbers larger than 700 are not supplied.
- Page 24 S 2 S 3 S 4 S 6 S 5 S 7 PRE OUT OPTICAL MULTI ANTENNA CONTROL SPEAKERS X07-3180-00 X29-2700-00 MENU/ DEMO SET SOUND DISPLAY PHONES S 9 S10 S11 S12 S13 S14 RD-M52MD-L Digitized in Heiloo the Netherlands Not for sale!
- Page 25 : N09-2961-05 3x12(BLK) : N89-3012-45 WASHER : N19-0364-05 E-RING : N19-1510-05 WASHER : N29-0208-04 X07- USED RD-VH5MD-S/ RD-M52MD-S X07- X07- X07- TUNER SUPER / BAND DIGITAL WOOFER VOLUME/ S 2 S 3 S 4 S 6 S 5 S 7...
- Page 26 Parts No. Description Description Ref. No Parts No. ress Parts nation marks Parts nation marks ress ✽ G16-1208-04 SHEET RD-M52MD-L ✽ G53-0084-04 PACKING (LCD) G10-0428-04 NON-WOVEN FABRIC ✽ A02-2954-11 PLASTIC CABINET G10-0513-04 NON-WOVEN FABRIC A09-1161-08 BATTERY COVER ✽ A13-3173-23 FRAME ✽...
- Page 27 www.freeservicemanuals.info 1/20/2020 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
- Page 28 www.freeservicemanuals.info 1/20/2020 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
- Page 29 www.freeservicemanuals.info 1/20/2020 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
- Page 30 www.freeservicemanuals.info 1/20/2020 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
- Page 31 www.freeservicemanuals.info 1/20/2020 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
- Page 32 www.freeservicemanuals.info 1/20/2020 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
- Page 33 www.freeservicemanuals.info 1/20/2020 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
- Page 34 www.freeservicemanuals.info 1/20/2020 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. & Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No.
- Page 35 GEAR DRIVE D13-1921-08 GEAR FEED MODEL ABB. Australia Canada China England Europe Germany Korea Malaysia D10-3863-08 SLIDER LOAD RD-M52MD-L D10-3864-08 LOAD RD-M52MD-S D13-1916-08 GEAR FINAL RD-M72MD D10-3865-08 CLAMP MODEL ABB. Mexico PX/AAFES Russia Scandinavia Shanghai Other area D10-3858-08 SLIDER OUTER...
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Page 36: Specifications
(Vertical installation) ......W : 142 mm (5-9/16") H : 228 mm (9") D : 356 mm (14") Weight (net) ............6 kg (13.2 lb) KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. Notes Notes Notes ÷... - Page 37 Av. Moema, 170-17˚, Andar-Cobertura “B”, Ed. Maximum Service Center, 04077-020 Moema, São Paulo-SP-Brasil KENWOOD ELECTRONICS U.K. LIMITED KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB., United Kingdom KENWOOD ELECTRONICS BELGUM N.V. Meachelsesteenweg 418, B-1930 Zaventem, Belgium KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembrücker Str.