Samsung MAX-WS730 User manual

1-1Samsung Electronics

1. Alignment and Adjustments

1-1.Tuner

FM THD Adjustment

Output

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

Antenna

Terminal

Distortion Meter

Input

SET

Input

output

Oscilloscope

FM IN

FM Antenna

SET

20 kΩ

OUTPUT

AM SSG

450KHZ

INPUT

AM ANT

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)

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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)

(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

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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 Notes

NOR

SPEED

Control

1SPK 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 MTT-

114N into Deck 1

- Press FWD PLAY

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 MTT-

5512 into Deck 2

1) Press REC PLAY button.

2)TAPE PCB JCW3 ,connected

toVTVM

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 con-

nected to the

scope)

Fig 1-8 - Turn JSR2L,JSR2R

to the right and left

After adjust-

ment secure

it with

REGION

LOCK.

After putting MTT-

114N into Deck 2

- Press FWD PLAY

button.

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3 CD CHANGER

MINI MINI COMPONENT

MAX-WS730/WS730S/ZS730/ZS730G

MAX-WS750/WS750S/ZS750/ZS750G

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. PCB Diagrams

6. Wiring Diagram

7. Schematic Diagrams

- Confidential -

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Printed in Korea

Code no. AH68-01225V

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Samsung Electronics 6-1

6.Wiring Diagram

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Samsung Electronics 7-1

7. Schematic Diagram

7-1 MAIN

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7-2 Samsung Electronics

7-2 FRONT

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Samsung Electronics 7-3

7-3-1 AMP (MAX-WS730)

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7-4 Samsung Electronics

7-3-2 AMP (MAX-WS750)

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