SAMSUNG MAX-WL85, MAX-L82 Alignment and Adjustments

1Samsung Electronics

1. Alignment and Adjustments

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 so that “TUNED” of FLT is lighted (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

AM(MW) OSC

Output

1~7.0±0.5V

Received FREQ.

Adjustment

point

522~1611 KHz

AM(MW) RF

ITEAM

594 KHz

Maximum Output (Fig1-4)

TESTER

MAIN PCB

VT GND

Fig 1-4 OSC Voltage

LW OSC

146~290 KHz

2~7.0±0.5V

AM(MW) RF

150 KHz

Maximum Output (Fig1-4)

SW1 OSC

2.3~7.3 MHz

1~8V±1V

SW1 RF

3.5MHz

Maximum Output (Fig1-4)

SW2 OSC

9.5~26.1MHz

SW2 RF

10MHz

Maximum Output (Fig1-4)

1~8V±1V

(GND)

VTVM

Alignment and Adjustments

2 Samsung Electronics

2-1To Adjust Tape Speed

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

ii) MTT-5512 (or equivalent)

iii) MTT-112B (or equivalent)

2) Connect the cassette deck to the frequency 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

OUT

(connected

to the frequency

counter)

Turn CSVR1 toleft and right (MAIN PCB)

3KHz±30Hz

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.

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.

6V(±0.5V)

Turn DSVR1,DSVR2

to the right and left

Remark

Standard

To Adjust

Pre-Setup

Item

Step

Pre-Setup Condition

Fig 1-8

After putting MTT-

114N into Deck 2

1)Press FWD PLAY

button.

After putting MTT-

5512 into Deck 2

1)Press REC PLAY

button.

2)MAIN PCB DCW3,

connectted to VTVM

Recording Bias Voltage

2-4 To Adjust PlayBack Level/REC

2. Adjust Deck 2 Play Level/REC BIAS

1. Adjust Deck 1 Play Level

Cassette Deck

output

SPK OUT

Frequency Counter

Figure 1-5

Figure 1-6

SPK OUT

Recording /Play head

AZIMUTH control screw

Figure 1-7

In Out

Cassette Deck

Oscilloscope

2 Cassette Deck

±1%

range

Figure 1-8

Audio OSC.

SET (MAIN PCB)

Oscilloscope

AUX IN

LINE OUT

VTVM

DCW3

IN OUT

REC Bias Voltage

Connect to

DCW3 as in

Fig.1-8 and read

the VTVM.

Turn DL4 to the right and left.

105KHz±0.5KHz

Remark

Standard

To Adjust

Pre-Setup

Item

Step

Pre-Setup Condition

Input MTT-5512

into Deck2,then

press REC button.

MAIN PCB

2-2. Adjust REC Bias Voltage

L,R UNBALANCE

Connect to

DCW3 as in

Fig.1-8 and read

the VTVM.

Turn DSVR3 to the right and left.

±0.5dB

Remark

Standard

To Adjust

Pre-Setup

Item

Step

Pre-Setup Condition

Input MTT-112B

into Deck2,then

press PLAY button.

MAIN PCB

2-3. Adjust L,R UNBALANCE