Samsung RCD-M70 Bedienungsanleitung

RADIO CASSETTE RECORDER

CD PLAYER

RCD-M70

SERVICE Manual

RADIO CASSETTE RECORDER CD PLAYER CONTENTS

1. Alignment and Adjustments

2. Disassembly and Reassembly

3. Exploded Views and Parts List

4. Electrical Parts List

5. Block Diagrams

6. PCB Diagrams

7. Wiring Diagram

8. Schematic Diagrams

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2-1

2. Disassembly and Reassembly

2-1 Front Cabinet

1. Remove the Lid battery of A

2. Remove 9 screws of ! of its rear part

3. Remove 3 screws of @ of its rear part

4. Remove Front/Top Cabinet of B

Fig 2-1

1. Remove Top Cabinet of C to topward.

2-2 Top Cabinet

Samsung Electronics

Fig 2-2

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1. Alignment and Adjustments

1-1 Tuner

Samsung Electronics 1-1

FM THD Adjustment

Minimum Distortion (Figure 1-1)

SSG FREQ.

Adjustment

point

(IT1)

98 MHz

FM DETECTOR COIL

FM Stereo Adjustment

L-CH/R-CH : Maximum(Figure 1-3)

SSG FREQ.

Frequency

Adjustment

point

(ISVR1)

98MHz

SEMI-VR(5KΩ)

FM Search Level Adjustment

Adjust ISVR2 so that “TUNED” of LCD

is lighted (Figure 1-2)

Figure1-2 FM Auto Search Level Adjustment

Figure1-3 FM Stereo Separation Adjustment

Figure1-1 IF CENTER and THD Adjustment

SSG FREQ.

Adjustment

point

(ISVR2)

98 MHz

BEACON

SENSITIVITY

SEMI-VR(50KΩ)FM SSG

SSG

75Ω

Dummy

5KΩ

Stereo

Modulator

(Pilot 10%)

OUT

Oscilloscope

FM antenna

SET

Speaker

Terminal

EXT

GND

VTVM

GND

26 dB

FM SSG

Output

GND

Speaker

Terminal

Antenna

Terminal

Distortion Meter

Input

SET

Input

output

Oscilloscope

FM IN

FM Antenna

SET

50 kΩ

FREQ:1KHz

MOD : 40KHz DEV

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1-2 Samsung Electronics

1-1-1 Test Equipment

1-1-2 Pre-Adjustment

1-1-3 AM Adjustment

1. AM Standard Signal Generator (S.S.G) : 400Hz, 30% MOD

2. Oscilloscope

3. VTVM

4. Frequency counter

5. Loop antenna

6. Dummy load (3Ω)

7. DC voltmeter

1. Check the source voltage

2. Press TUNER/BAND to select the AM(MW) function.

3. Set the EQ/S.BASS control to OFF position.

4. Set the volume control to approximaterly 50mw

Intermediate

frequency (IF)

adjustment

AM frequency

coverage

adjustment

AM tracking

adjustment

Figure 1-4

Connect DC voltmeter to AM

VT(OR10) and GND

Figure 1-5

450 KHz

594 KHz

Figure 1-4

SET

60 cm

AM Signal

Generator Test Loop

Antenna

Speaker

Terminal

VTVM

IN OUT

GND

Oscilloscope

AM-ANT

Figure 1-5

SET

AM VT(OR10)

GND

Input

DC Voltmeter

594 KHz MW-ANT

-- -

OCT2

1611KHz

522 KHz

IT 2

OT 1 1.0V

Maximum output

4.6V

Non Adjust

Remark

FREQ. Setting Adjust. PointSSG.FREQ.Item

Step Connection

Alignment and Adjustments

Dummy Load(3Ω)

1-1-4 MW/LW

Intermediate

frequency (IF)

adjustment

MW frequency

coverage

adjustment

MW tracking

adjustment

Fig 1-4

Fig 1-5

594 KHz 594 KHz MW ANT

COIL

OCT2

LW ANT

COIL

OT1 1.0V(LOW)

Maximum output

Remark

FREQ. Setting Adjust.

Point

SSG.FREQ.

Item

Step Connection

522 KHz

4.6V(HIGH)

1611 KHz

1404 KHz -NON Adjust

Fig 1-4

-144 KHz OT2 0.7V(LOW)

-290 KHz OCT4 3.1V(HIGH)

LW frequency

coverage

adjustment

LW tracking

adjustment Fig 1-5

170KHz 170 KHz

270KHz --

Fig 1-5 450 KHz 522 KHz IT2 Maximum output

NON Adjust

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Samsung Electronics 1-3

1-2 Cassette Deck

Alignment and Adjustments

1-2-1. Recording BIAS adjustment

1) Connect frequency counter to KC433 (See Fig.1-6)and press the Record button.

2) Adjust KT431 (BIAS OSC COIL) until frequency counter reads 50KHz.

1-2-2. Tape AZIMUTH adjustment

1) Connect the equipments as per Fig.1-8 to adjust the tape azimuth with

test tape (recorded at 6.3KHz : MTT-113N)

2) Play the test tape after inserting in DECK.

3) Adjust the azimuth ajustment screw of left side of record/play head for maximum

output and for the same channel phase. (see Fig.1-7)

1-2-3. Tape speed adjustment

1) Connect the equipments as shown in Fig.1-8 adjust the tape speed with

test tape (recorded at 3KHz : MTT-111N)

Fig.1-6 Recording bias adjustment

Fig.1-8

Fig.1-7 Azimuth speed adjustment

50KHz

FREQUENCY

COUNTER

PRE/REC PART

KC433

Adjustment

Adjustment screw

R/P head

UNIT

UNDER TEST

VTVM

OSCILLOSCOPE

FREQUENCY

COUNTER

3000Hz

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Samsung Electronics 3-1

3.Exploded Views and Parts List

3-1 Cassette Deck Exploded View and Parts List

No. Code No. Description Specification Remarks

AH59-20005X DECK-CASSETTE YN21ZSW-77

1 AH81-11037D R.F PULLEY ASS’Y 8521-200090-300

2 AH81-11154D BELT SUB 6600-090014-001

3 AH81-11037H CAM GEAR 6021-200802-001

4 AH81-11037J S REEL ASS’Y 8521-200080-300

5 AH81-11037K T REEL ASS’Y 8521-200070-300

6 AH81-11154E BELT MAIN 6600-090020-001

7 AH81-11150W R/P HEAD TC-951

8 AH81-11150X ERASE HEAD TC-230AN

9 AH81-11037Q MOTOR EG530YD2BH

3-1-1 AUTO STOP(OPTION)

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3-2 Samsung Electronics

3-1-2 AUTO REVERSE(OPTION)

No. Code No. Description Specification Remarks

AH59-20006V

AH81-10005W

AH81-10005Z

AH81-10006C

AH81-10006R

AH81-11037Q

AH81-10022E

AH81-10022H

AH81-10022T

AH81-10023W

TAPE DECK ASS’Y

LEAF SWITCH

PINCH ROLLER ARM ASS’Y

RF BLET

MAIN BELT

MOTOR

R/P HEAD

P/B HEAD

E-HEAD

MAIN BELT

YN921ZSW-50

MSW-1541T

1921-04-301

1921-07-03

1821-12-173

EG530YD2B

MS15R-AA2N1

MR359-KF243

PHK380-MS16A

1821-17-03

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Samsung Electronics 3-3

3-2 Main Exploded View and Parts List

3-2-1 Exploded View

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3-4 Samsung Electronics

3-2-2 Parts List

No. Code No. Description Specification Remarks

1 AH64-00845B WINDOW-LCD PMMA

2 AH64-00835B CABINET-FRONT HIPS

3 AH64-00851B KNOB-POWER ABS

4 AH64-00853B KNOB-CONTROL ABS

5 AH64-00852B KNOB-TIMER ABS

6 3001-001177 SPEAKER-WOOFER 7W,4 ohm

7 G3X8-1CD CD-PACK

8 AH64-00840B DOOR-CD ABS

9 AH64-00846C KNOB-DECK, PLAY A ABS

AH64-00846D KNOB-DECK, REW ABS REWIND

AH64-00846E KNOB-DECK, FF ABS FAST FORWARD

AH64-00846F KNOB-DECK, EJECT/STOP ABS EJECT

AH64-00846G KNOB-DECK, PAUSE ABS PAUSE

AH64-00846B KNOB-DECK,REC ABS RECORD

AH64-00846H KNOB-DECK, PLAY B ABS PLAY AUTO-REVERSE

AH64-00846J KNOB-DECK, MODE ABS MODE

AH64-00846K KNOB-DECK, DIR ABS DIRECTION

10 AH64-00848B KNOB-FUNCTION ABS

11 AH64-00849B KNOB-VOLUME ABS

12 AH67-00083B KNOB-SOUND ABS

13 AH61-80030A DAMPER ASSY POM M0.8

14 AH61-00289A SPRING-CASSETTE SUS304,PI1.0

15 AH64-00837B CABINET-TOP ABS L/GRAY

16 AH61-00505B HOLDER-JOG ABS

17 AH64-00850B KNOB-JOG ABS

18 AH64-00838B DOOR-CASSETTE L ABS

19 AB64-00839B DOOR-CASSETTE R ABS

20 AH64-00843B WINDOW-CASS L PMMA SMOKE

21 AH64-00844B WINDOW-CASS R PMMA SMOKE

22 AH61-00502B HOLDER SIDE L ABS

23 AH61-00503B HOLDER SIDE R ABS

24 3001-001178 SPEAKER-TWEETER 7W,4 ohm

25 AH64-00836B CABINET-BACK HIPS

26 4201-001051 ANTENNA-ROD 730mm,210mm

27 AH64-00842B HANDLE ABS

28 AH63-00209B COVER-HANDLE ABS

29 AH64-00841B LID-BATTERY ABS

30 AH61-00586A SPRING BATT +- SUS304,PI1.2

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Samsung Electronics 3-5

3-3 CD Deck Exploded View and Parts List

No. Code No. Description Specification Remarks

1 AH61-20463A BASE-MAIN ABS BLK

2 AH66-60035A BELT-PULLEY CR T1.5 BLK

3 AH59-20004Y DECK CDP ASS’Y CMS-P30AM6UD

4 3711-001061 CONNECTOR-HEADER BOX 6P 1R 2mm ANGLE SN

5 AH66-22004A GEAR POM BLK

6 AH66-22001A GEAR-CAM POM BLK

7 AH66-22002A GEAR-PULLEY POM BLK

8 AH66-20196A GEAR-SYNCHRO POM BLK

9 AH66-22003A GEAR-TRAY POM BLK

10 AH61-20464A HOLDER-CHUCK ABS+GF20%

11 AH66-30088A LEVER-LIFT ABS+GF20%

12 AH61-50182A SHAFT-CD SCREW TAP TITE

13 3302-000159 MAGNET-FERRITE 6P FERRITE

14 AH31-10021A MOTOR-DC RF-500TB-12560

15 AH41-10469A PCB-SUB XPC

16 AH66-10025A PULLEY-MOTOR POM BLK

17 AH73-10012A RUBBER-CD SI BLU45

18 AH63-70081C SHEET-CHUCK HYMELON

19 3409-001010 S/W-LEAF MIC

20 AH61-42002A STOPPER-PIN POM WHT

21 AH66-90060A TABLE-CHUCK ABS+GF10%

22 AH66-90059A TRAY ABS BLK

23 0402-000125 DIODE 1N4001 50V 1A

24 AJ60-10001A SCREW TAP TITE PWH M7 L5

25 AH60-10051A SCREW TAP TITE PWH PI12 M3X8

26 AH60-10107A SCREW TAP TITE PWH PI15 M3X12

27 AJ30-20001B PICK-UP SOH-AP

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