Samsung MAX-ZJ550 Service manual

3 CD CHANGER MINI MINI COMPONENT

MAX-ZJ550

SERVICE

Manual

MIMI MIMI COMPONENT SYSTEM CONTENTS

1. Alignment and Adjustments

2. Exploded Views and Parts List

3. Electrical Parts List

4. Block Diagrams

5. Wiring Diagram

6. Schematic Diagrams

- Confidential -

Printed in Korea Code no. AH68-01383U

1-1Samsung Electronics

1. Alignment and Adjustments

1-1.Tuner

FM THD Adjustment

Output

28 dB(±2dB)

60 dB

Minumum Distortion (0.4% below) (Figure 1-1)

SSG FREQ. Adjustment

point (FM DET)

98 MHz

FM DETECTOR COIL

FM Search Level Adjustment

Adjust SVR1 (Figure 1-2)

Figure1-2 FM Auto Search Level Adjustment

*Adjust FM S.S.G level to 28dB

Figure1-1 IF CENTER and THD Adjustment

SSG FREQ. Adjustment

point

(SVR1)

98 MHz

BEACON SENSITIVITY SEMI-VR(10KΩ)

FM S.S. G

GND

28 dB

FM S.S. G

Output GND

Speaker Terminal

FM Antenna Terminal

Distortion Meter

Input

SET

Input

output

Oscilloscope

FM IN

FM Antenna

SET

20 kΩ

OUTPUT

AM SSG 450KHZ

INPUT

AM ANT IN

Speaker Terminal

60cm

AM IF

VTVM Oscilloscope

AM(MW) I.F Adjustment

Maximum output (Figure 1-3)

SSG FREQ. Frequency Adjustment

point

450 kHz 522 kHz

AM IF

Figure1-3 AM I.F Adjustment

OUTPUT

* Adjustment Location of Tuner PCB

Fig 1-4 OSC Voltage

AM(MW) OSC Adjustment

Output

1~7.0±0.5V

Received FREQ. Adjustment

point

522~1611 KHz

AM(MW) RF Adjustment

ITEAM

594 KHz

Maximum Output(Fig1-4)

LW OSC Adjustment

146~290 KHz

2~7.0±0.5V

LW RF Adjustment

150 KHz

Maximum Output(Fig1-4)

Alignment and Adjustments

1-2 Samsung Electronics

1-1-2 AM(MW),LW,SW1,SW2 Adjustment

Circuit Measuring Instrument & Step S.S.G Radio dial Adjusting Adjust for to be Arrangement Frequency Setting Point Adjusted

1 522KHz 522KHz MW OSC Adjust for

1.0V±0.1V at the low.

OSC Connect AM signal (IR117)

generator to loop antenna,VTVM AND oscilloscope 2 1611KHz 1611KHz MW OSC Check for 7.0V±1.0V at the high.

(Fig 1-3) (IR117) AM (MW)

RF “ 1 594KHz 594KHz MW ANT Maximum out

INTER FREQ “ 1 455KHz 522KHz TL2 Maximum out

OSC Fig 1-3 1 146KHz LW OSC Adjust for 2.0V±0.1V at the low.

LW 2 290KHz LW OSC Check for 7.0V±1.0V at the high.

RF 1 150KHz 150KHz LW ANT Maximum out OSC Fig 1-3 1 2.3MHz SW1 OSC Adjust for

1.0V±0.1V at the low.

SW1 2 7.3MHz - Check for 8.5V±1.0V at the high.

RF 1 3.5MHz 3.5MHz SW1 ANT Maximum out OSC Fig 1-3 1 9.5MHz SW2 OSC Adjust for 1.5V±0.1V at the low.

SW2 2 26.1MHz - Check for 8.0V±1.0V at the high.

RF 1 10MHz 10MHz SW2 ANT Maximum out

Alignment and Adjustments

1-3Samsung Electronics

(GND)

VTVM

2-1. To Adjust Tape Speed

1) Measuring tape: i) MTT-111 (or equivalent) (Tapes recorded with 3kHz)

ii) MTT-5512 (or equivalent)

2) Connect the SPK OUT of the MAIN PCB to the fre-

quency counter as in figure 1-5.

1) Before the actual adjustment, clean the play/recording head.

2) Measuring tape : i) MTT-114N(or equivalent 10kHz AZIMUTH control) ii) MTT-5512

3) The cassette deck is connections as shown in figure 1-7.

Notes

NOR SPEED Control

SPK OUT (connected to the frequency counter)

Turn VSR1 to left and right (FRONT PCB)

3KHz

Remark

Standard

To Adjust

Pre-Setup

Item

Step

Pre-Setup Condition

1) Deck 1:MTT-111

2) Press PLAY SW button

3) Deck 2:Same as above

AZIMUTH

SPK OUT (VTVM is connected to the scope)

- Turn the control screw to as shown in Figure 1-6.

Max output and same phase (both channels)

After adjustment secure it with REGION LOCK.

Remark

Standard

To Adjust

Pre-Setup

Item

Step

Pre-Setup Condition

After putting MTT114N into Deck 1

- Press FWD PLA Y button.

- Turn the control screw to as shown in Figure 1-6.

MAX OUTPUT and same phase (both channels)

CHECK TO 7mV(±0.5mV)

Remark

Standard

To Adjust

Pre-Setup

Item

Step

Pre-Setup Condition

After putting MTT5512 into Deck 2

1) Press REC PLA Y button.

2) TAPE PCB JCW3 ,connected to VTVM

Recording Bias Voltage

2-2. To Adjust PlayBack Level/REC

2. Adjust Deck 2 Play Level/ REC BIAS

1. Adjust Deck 1 Play Level

MAIN PCB

output

SPK OUT

Frequency Counter

Figure 1-5

SPK OUT

Figure 1-7

In Out

MAIN PCB

Oscilloscope

2. Cassette Deck

±1% range

Figure 1-8

Audio OSC.

SET (MAIN PCB)

Oscilloscope

AUX IN

VTVM

SPK OUT

IN OUT

AZIMUTH

Figure 1-6

Recording /Play head

AZIMUTH control screw

(RVS Play)

AZIMUTH control screw

(FWD Play)

SPK OUT (VTVM is connected to the scope)

Fig 1-8

- Turn JSR2L,JSR2R to the right and left

After adjustment secure it with REGION LOCK.

After putting MTT114N into Deck 2

- Press FWD PLA Y button.

Samsung Electronics2-1

2.Exploded Views and Par ts List

2-1 Cassette Deck :ADR268FTW(OPTION)

No. Code No. Description Specification Remarks

AH59-01145A DECK-CASSETTE ADR268FTW 1 AH81-00368A ASS.Y RP HEAD ADR2400-RP(SANKYO) MT91-11010T 2 AH81-00141B HEAD PB MK10P-SS2N3 MT59-00041V 3 AH81-00363A ASS,Y MOTOR ADR2400-SHU2L MT91-15012J 4 AH81-00364A BELT MAIN1 ADR2400-MAIN 0.5 6602-001056 5 AH81-00365A BELT MAIN2 ADR2400-MAIN 1.25 6602-001010 6 AH81-00101A BELT SUB ADR2400-FR 6602-001055 7 AH81-00102A SOLENOID ADR2400-1(20

Ω)

MT75-00049A

Samsung Electronics

2-2

2.Exploded Views and Par ts List

2-2 Cassette Deck :ADR268DSW1-1(Option)

No. Code No. Description Specification Remarks

AH59-01144A DECK-CASSETTE ADR268DSW1-1 1 AH81-01031A HEAD 1WAY T21V1CAA MT59-K0015A 2 AH81-01032A HEAD ERASE DZLE15B-C1 MT59-K0009A 3 AH81-00363A ASS,Y MOTOR ADR2400-SHU2L MT91-15012J 4 AH81-00364A BELT MAIN1 ADR2400-MAIN 0.5 6602-001056 5 AH81-00365A BELT MAIN2 ADR2400-MAIN 1.25 6602-001010 6 AH81-00101A BELT SUB ADR2400-FR 6602-001055 7 AH81-00102A SOLENOID ADR2400-1(20

Ω)

MT75-00049A

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