Kenwood RX-DM65-V Service Manual

70%

MICRO Hi-Fi COMPONENT SYSTEM

RXD-M65V-H/M65V-N

SERVICE MANUAL

(HM-V655MP-H/V655MP-N)

Front glass * (B10-)

Cassette lid * (A53-)

Knob * (K29-)

Panel ass'y * (A60-)

In compliance with Federal Regulations, following are reproduction of labels on, or inside the product relating to laser product safety.

Caution : No connection of ground line if disassemble

the unit. Please connect the ground line on

rear panel, PCBs, Chassis and some others.

Miniature phone jack (E11-0399-05)

* Refer to parts list on page 30.

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.

standby/timer

POWER

standby/timer

Operation to reset

The microcomputer may fall into malfunction (impossibility 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 condition.

Unplug the power cord from the power outlet, then while

holding the POWER or

key depressed, plug the power

cord again.

÷ Please note that resetting the microcomputer clears

the contents stored in and it returns to condition when it left the factory.

After resetting the microcomputer, the display will show as follow:

The marking of products using lasers (For countries other than U.S.A., U.S.-Military and Canada)

The marking of this product has been classified as Class 1. It means that there is no danger of hazardous radiation outside the product.

Location: Back panel

CLASS 1

LASER PRODUCT

CAUTION

VISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.

Inside this laser product, a laser diode classified as Class 3A laser radiation is contained as alerted by the internal caution label shown above. Do not stare into beam or view directly with optical instruments.

Location: CD laser pick-up unit cover inside this product

FM indoor antenna (1) (T90-0855-05): V (T90-0877-05): MM1XE

AM Loop antenna (1) (T90-0852-05): V (T90-0893-05): MM1XE

Batteries (R6/AA) (2)

Remote control unit (1) (A70-1587-05): MM1XV (A70-1588-05): E

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 regions where use is necessary.)

RXD-M65V-H/M65V-N

CONTENTS / ACCESSORIES / CAUTIONS

CONTENTS / ACCESSORIES .................................. 2

EXTERNAL VIEW .......................................................3

DISASSEMBLY FOR REPAIR....................................4

BLOCK DIAGRAM ......................................................5

CIRCUIT DESCRIPTION ............................................6

ADJUSTMENT ..........................................................13

Accessories

INTERCONNECTION DIAGRAM .............................15

PC BOARD .............................................................. 16

SCHEMATIC DIAGRAM .......................................... 21

EXPLODED VIEW ....................................................28

PARTS LIST..............................................................30

SPECIFICATIONS ....................................................36

SYSTEM CONFIGURATIONS

SYSTEM MAIN UNIT DESTINATION SPEAKER HM-V655MP-H RXD-M65V-H EMX LS-M65V-H HM-V655MP-N RXD-M65V-N V LS-M65V-N

Cautions

DIGITAL

OUT

OPTICAL

AUX OUT

FRONT

SPEAKERS

(6-16

Ω)

ANTENNA

GND

FM 75

Ω

AUX IN

VIDEO OUT

AC 110 120V

AC 220 240V

Metallic cabinet * (A01-)

Cover (F07-1766-02)

RXD-M65V-H/M65V-N

EXTERNAL VIEW

Tuner ass'y * (W02-)

Lock terminal board (E70-0123-15)

Pin jack (E63-1277-05)

Pin jack (E63-1264-05)

Oscillating module (W02-1114-15)

Slide switch * (S62-0001-05)

AC power cord bushing * (J42-)

AC power cord * (E30-)

* Refer to parts list on page 30.

RXD-M65V-H/M65V-N

DISPLAY BOARD

Cushion (not supplied)

REAR VIEW

Fig.1

Fig.2

Fig.3

DECK BOARD

FORWARD

REVERSE

DISASSEMBLY FOR REPAIR

How to open the CD tray when it does not come out.

1. Insert a flat driver in to a square hole on the mechanism as shown in the figure.

2. Push a rack gear in the direction of arrow. (At this time, the tray comes out slightly frontward.)

3. The tray can be opened by hand.

How to Adjust the Azimuth of the REC/PLAY Head

(To adjust the azimuth adjustment screws, it is necessary to remove the front glass.)

1. Insert a screw driver into a hole on display board as shown in

the drawing. (Fig.1)

2. Push a driver frontward. (Fig.1)

3. Remove a front glass. (Fig.2)

4. Adjust the azimuth adjustment screws. (Fig.3)

* Replace a front glass if scratched.

0 to -78dB

MAIN VOL.1

BCLK LRCK SRDATA

TR KF TR KR

FC SR

FC SF

SL DR

SL DF

SP DF

SP DR

SL DRTR DR

FC DR

E F

PDLDB

(ONLY E TYPE)

D. OUT

BEAT CANCEL

VR1.2

L1,2

V. OUT

A. OUT

REC/PLAY

REC-R

REC-F

PLAY-SW PACK-SW

CPM SOL PHOTO

+9.0V

REC AMP

PB AMP

SA CLK SA DATA

A.OUT

SA CE

PLL DO

INPUT VOL.

SELECTOR

DATA

CLK

u-COM

CASSETTE DECK PRE. AMP

FL DRIVER

TACT KEY

REMOCON. MODULE

STAND-BY LED

BACK-UP CIRCUIT

LED

ON/OFF

AC IN

X14,K401

+34dB

TUNER

-37.5V

VCD D+5V

VCD A+9V

VCD M+7.5V

-B

AM 0dB=180mV

300mV

FM 0dB=600mV:75kDEV.

0dB=1.2V:1kHz

580mV

TAPE 0dB

+++

AUX

TUNER

INPUT VOL.

0dB

300mV

MAIN VOL.2

0 to -18dB

A.MUTE ON/STANDBY

FL DRIVER

37.5V

DSP MPEG DECODER

X14,

IC3

AN22000A RF-AMP

CD MECHA

4ch DRIVER

AN4801SB

IC4

DAC

RDS IC

X29,IC801

X14,IC501

FL DRIVER

ED501

X29,IC202

PRE. AMP

AUX OUT

DECK MECHA

X29,A601

IC1

SERVO u-COM

MN6627482WA

IC2

DIGITAL OUT

VIDEO OUT

BIAS ADJ.

ERASE

REC/PLAY

Q15-18

OSC

BIAS

TRAP

ATT.

AUX IN

AUX OUT

X29,J602

X29,J601

TUNER PACK

-8dB

IC701

X29,

IC6

DAC

ES3883

TV ENCODER

ES3800FL

IC5

HA12230NT

KEY

X14,S516

X14,A501

ROTARY ENCODER

REMOCON MODULE

u-COM

MAIN

LED

OUT

REC

E.VOL

X29,IC601

IC1

X29,IC101

FIL

X29,Q10

RELAY

PRIMARY

+5.4V

X14,IC402

AVR

+5V

+9V AVR

X14,D403

X29,D4

X29,Q111-114

POWER AMP

X29,Q106

PROTECTION

AMP

AUX IN

POWER AMP.

X29,IC911

AVR

+5V

AUX OUT

TAPE REC

TUNER

TAPE PLAY

0dB

X29,IC910

+9V AVR

X29,D900

AVR

-30V

X29,Q13

X29,D3

VOL.

INPUT

VOL.

FLAT

EX BASS

GAIN DISTRIBUTION

LOUDNESS

LC75343M

E.VOL

BASS,MID,TRE

10dB

TONE

Q1,2

50W : 6ohm

EIAJ 10%

1kHz

HEAD-

OUT

PHONE

W02-2920-15 (E TYPE)

W02-2919-15 (M,X,V TYPE)

(W02-2949-05)

VCD MODULE

(X28- )

RXD-M65V

BLOCK DIAGRM

RXD-M65V-H/M65V-N

CIRCUIT DESCRIPTION

1. Initializing

1-1 Initializing Method

• While holding down the [POWER] key, plugged in the power cord to AC power wall outlet.

1-2 Initializing Operation

• During the initial operation, the display shows "RESET "and after that

• it will be returned to standby condition.

• If any mechanisms error occurred, the error indication is displayed as "ERR" in the display.

1-3 Mechanism Initializations

1 CD Mechanism

• If a mechanism error occurred, the error indication is displayed as "C ERR " in the display. 2 Deck Mechanism

• If a mechanism error occurred, the error indication is displayed as "X ERR " in the display.

2. Tuner Destination

Set Destination Band Receiving Frequency Range

E/T/H E3 FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz

E2 RDS AM 531kHz~1602kHz 9kHz +450kHz 9kHz

M/X/V/I E1

M/V/I K2

FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz AM 531kHz~1602kHz 9kHz +450kHz 9kHz FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz AM 530kHz~1610kHz 10kHz +450kHz 10kHz

Channel

Space

IF RF

Type E/E2/T/H M/V X

✽ Voltage Range 4.2V~5.0V 1.4V~2.5V 0.7~1.3V

✽ Pin 3 of microcomputer (X29, IC701).

3. Tuner Preset Frequency

P.CH

1 FM 98.30MHz FM 98.30MHz 2 FM 108.0MHz FM 108.0MHz 3 FM 89.10MHz FM 89.10MHz 4 FM 87.50MHz FM 87.50MHz 5 FM 90.00MHz FM 90.00MHz 6 FM 87.50MHz FM 87.50MHz 7 FM 87.50MHz FM 87.50MHz 8 FM 87.50MHz AM 1503kHz

9 AM 1610kHz AM 1584kHz 10 AM 1000kHz AM 999kHz 11 AM 630kHz AM 621kHz 12 AM 1440kHz AM 1350kHz 13 FM 106.0MHz FM 106.0MHz 14 AM 530kHz AM 531kHz 15 FM 87.50MHz FM 87.50MHz

K2(M,V TYPE) E1/E3(E,E2,T,H,M,V,X)

Frequency

P.CH

16 FM 98.00MHz FM 98.00MHz 17 FM 98.50MHz FM 98.50MHz 18 FM 87.50MHz FM 87.50MHz 19 AM 990kHz AM 945kHz 20 FM 97.40MHz FM 97.40MHz 21 AM 530kHz AM 531kHz 22 FM 87.50MHz FM 87.50MHz 23 FM 87.50MHz FM 87.50MHz 24 FM 87.50MHz FM 87.50MHz 25 FM 87.50MHz FM 87.50MHz 26 FM 87.50MHz FM 87.50MHz 27 FM 87.50MHz FM 87.50MHz 28 FM 87.50MHz FM 87.50MHz 29 FM 87.50MHz FM 87.50MHz 30 FM 106.0MHz FM 106.0MHz

K2(M,V TYPE) E1/E3(E,E2,T,H,M,V,X)

Frequency

RXD-M65V-H/M65V-N

CIRCUIT DESCRIPTION

4. Test Mode

4-1 Setting method of the Test Mode

Test Mode Keys Setting Method

CD MODE CD PLAY key

DECK MODE TAPE PLAY

* SUB CLOCK OSC DIAGNOSIS MODE key

* The oscillation diagnosis (existence of oscillation and measurement of period) of a sub clock is performed

before the test mode is entered. If the diagnosis result is OK, the system enters the test mode. If the diagnosis result is NG, the oscillation of the sub clock is diagnosed again. If the result is OK, the system enters the test mode. If the diagnosis result is continuously NG 5 times, the system stops with "ERR1"and "ERR2"displayed.

4-2 Cancel of the test mode

• Initialized and cancel the test mode if pulling out the power cord.

• Cancel the test mode only if the power key is turned off.

4-3 Contents of the Test Mode

• The muting during mode selection is not controlled in the test mode.

• During the test mode, it can be operated in a special manner that is different from an ordinary operation by using the keys on the main body, specifically as shown in the following tables.

Insert the AC cord to AC wall outlet while holding down the left key.

4-4 CD Test Mode

Keys Display Operation

CD-PLAY/PAUSE 05

(Cyclically changed the mode (✽✽:✽✽)Time Display • Pickup moves inward.

05 and 03 by pressing the key.) 03 ✽ ✽:✽ ✽ • Tracking-servo off. (for checking TE)

(✽ ✽:✽ ✽)Time Display • Pickup moves outward.

CD STOP 00 : 00 Stop the CD operation.

(Cyclically changed in the stop mode only.) 07 FG/FE FG value /FE value

SKIP UP Ex.01~02 • Track number up.

SKIP DOWN Ex.02~01 • Track number down.

SKIP UP Usual Indication • Play the first track number in the stop mode.

SKIP DOWN Usual Indication • Play the last track number in the stop mode.

✽ ✽:✽ ✽ • Tracking-servo on.

Adjustment value/mean value

08 FB/FO FBAL value /FO value 09 TG/TE TG value /TE value 10 TB/TO TBAL value /TO value

4-5 Deck Test Mode

Keys Display Operation

• 4 Seconds Recording If the REC/ARM key is pressed, the system record for 4 seconds. Then, it rewinds to the REC starting position and plays back automatically.

TAPE REC TAPE If the REC/ARM key is pressed, during the 4 seconds REC operation, the

system records further for 4 seconds, then returns to the starting position of the first 4 seconds REC operation and plays back.

SOUND Beat-C ON Beat cancel will be on while pressing the sound key.

✽

Mechanism half switches indication

The mechanism half switches status are indicated "blank" or "E "in the display.

8th Dot(Display) 1st figure 2nd figure 3rd figure 4th figure

Mechanism FWD REC Inhibit RVS REC Inhibit Cassette Half Tape Play

Half Switch Detection SW Detection SW Detection SW Detection SW

ON Blank Blank Blank Blank

OFF E E E E

RXD-M65V-H/M65V-N

X28,IC1

DECK SYSTEM IC

HA12230NT

X14,IC501

FL DRIVER

(MN12510F)

DECK MECHA.

X14,ED501 X29,IC601

(HNA-14MS07T)

Vaccume Fluorescent Display

(LC75343M)

SYSTEM IC

X29,IC701

MN101C51FGD

TUNER ASSY

VCD MODULE

(W02-2949-15)

PLL IC

X29,IC801

RDS IC (E/T TYPE)

(BU1923F)

KEY REMOTE ENCODER

KEY1,2 X14,A501 X14,S516

CIRCUIT DESCRIPTION

5. Microcomputer : MN101C51F (X29, IC701)

5-1 Microcomputer Periphery Block diagram

Key Matrix VREF =5.0V

Voltage

Range

Key 1 ON/

(Pin 5) STANDBY DOWN PLAY UP OPEN

Key 2

(Pin 6) PLAY

0 0.89 1.55 2.00 2.61 3.02 3.47 3.95 5.00

AUX TUNER

REC SET MODE O.T.E.

SKIP

STOP

TAPE

CD SKIP CD

REPEAT SOUND (off)

(off)

RXD-M65V-H/M65V-N

CIRCUIT DESCRIPTION

5-2 Pin Description of Microcomputer

Pin No. Pin Name I/O Pin Description

1 VREF- - Power supply (-) for A/D converter. 2 PH I Deck reel sensor input. 3 TN TYPE I Discrimination of tuner destination. 4 S LEVEL I RDS signal level input. (E/T version only)

5,6 KEY1,KEY2 I A/D key (1, 2) input.

7 A LEVEL I Unused. 8 TH I Unused.

9 CD PROTECT I Detection pin of CD protection. 10 VREF+ - A/D reference voltage input of the A/D converter. 11 VDD I Pin for power supply (+5V). 12 OSC2 O Main clock output (8.388MHz). 13 OSC1 I Main clock input (8.388MHz). 14 VSS - Connected to be ground. 15 XI I Timer clock input (32.768kHz). 16 XO O Timer clock output (32.768kHz). 17 MMOD - Connected to be ground. 18 SDI O Data output to FL driver. 19 SDO I Data input from FL driver. 20 SCK O Clock output to FL driver.

21~23 N.C. - Unused.

24 CL SW I Input pin of close switch for CD tray. Closed 25 RESET I Reset signal input for microcomputer. Reset 26 CE I Back up detection input. AC On AC Off 27 OP SW I Input pin of open switch for CD tray. Opened 28 CD POWER O ON/OFF control pin for CD DSP power. 29 N.C. - Unused. 30 VCD u-com ACK I/O DSA Acknowledge 31 REM CONTROL I Remote control signal input. 32 NO USE - Unused. 33 RDSCLK I RDS clock input. (E/T version only) 34 RESET2 I Detection pin of voltage drop. 35 NO USE - Unused. 36 PAL/NTSC O TV system selector AUTO 37 VCD u-com DATA I/O DSA data pin for ESS. 38 VCD u-com ST I/O DSA STB pin for ESS. 39 CLOSE O Control pin of CD tray motor to close the tray. 40 OPEN O Control pin of CD tray motor to open the tray. 41 HP IN I Detection pin for headphones jack. Detected 42 FLASH UC 1 I Power supply for flash ROM. 43 FLASH UC 2 I Power supply for flash ROM. 44 EVOL CE O Chip enable output to electronic volume (X29, IC601). 45 EVOL.CLK O Clock output to electronic volume (X29, IC601). 46 EVOL.DATA O Data output to electronic volume (X29, IC601). 47 POWER RLY O Power relay control.

48~51 N.C. - Unused.

52 PLL CLK O PLL IC clock output. 53 PLL DO/ST I PLL IC data input. 54 PLL DAT O PLL IC data output. 55 PLL CE O PLL IC chip enable output. 56 SD I SD detector input. Detected 57 TU MUTE O Tuner mute control. Mute ON 58 PLAY SW I Detection switch input of head position for deck. Playback

Active

RXD-M65V-H/M65V-N

CIRCUIT DESCRIPTION

Pin No. Pin Name I/O Pin Description

59 REC R SW I Deck reverse recording switch input. OFF ON 60 REC F SW I Deck forward recording switch input. OFF ON 61 HALF SW I Cassette half switch input. Detected 62 BEAT C O ON/OFF control pin of beat cancel for deck. ON OFF 63 R/P O Deck recording & playback changeover. Recording Playback 64 BIAS O ON/OFF control pin of bias for deck. ON OFF 65 A/B-1 O Deck recording mute & head select control 1. 66 A/B-2 O Deck recording mute & head select control 2. 67 MUTE O Deck line mute control. ON 68 CPM O Control pin of capstan motor for deck. 69 SOL O Control pin of solenoid for deck. 70 RDS DATA I RDS data input. (E/T version only) 71 PROTECT I Detection pin of the protection for power supply. 72 AMUTE O Audio mute output. 73 SP RLY O On/off control pin for speaker relay. 74 EEP SDA I/O EEPROM data input/output. 75 EEP SCL O EEPROM clock output.

76,77 ENC A,B I Volume encoder (X14, S516) signal inputs.

78 LED STBY RED O Standby led (red) control pin. OFF ON 79 LED STBY GRN O Standby led (green) control pin. OFF ON 80 NCS O Chip enable output of FL driver.

Active

6. Pin Description of IC's

6-1 CD Motor Driver : TA8409S (X29, IC26)

Pin No. Pin Name I/O Pin Description

1 IN2 I Input pin. 2 VCC - Power supply. 3 OUT2 O Output pin. 4 NC - Unused. 5 GND - GND 6 VS - Power supply for output side. 7 OUT1 O Output pin. 8 VREF - Control power supply. 9 IN1 I Input pin.

Function

INPUT OUTPUT MODE

IN 1 IN 2 OUT 1 OUT 2 MOTOR

00∞∞ STOP 1 0 H L CW/CCW 0 1 L H CCW/CW 1 1 L L BRAKE

∞ : High Impedance Note) Input : "H" Active

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