SAMSUNG max455, max445 Alignment and Adjustments

4. Alignment and Adjustments

4-1 Tuner

FM T.H.D Adjustment

SSG FREQ. 98MHz
Adjustment

point FM DETECTOR COIL

(IFT2)

Minumum Distortion(Figure 4-1)

FM Search Level Adjustment

SSG FREQ. 98MHz
Adjustment

point SEMI-VR(5KB)

(IVR1)

"TUNED" is shown on FLT(Figure 4-2)

FM
Antenna
Terminal

Speaker
Terminal

Input

Input

Figure 4-1 IF CENTER and T.H.D Adjustment

Figure 4-2 FM Auto Search Level Adjustment

Output

Distortion Meter

Oscilloscope

Oscilloscope

FM SSG

FM SSG

GND

26dB

75Ω
Dummy

FM IN

FM Antenna

SET

5 kΩ

SET

Output
GND

AM(MW) I.F Adjustment

SSG FREQ. 450KHz
Adjustment

point AM I.F COIL

(IFT1)

Maximum output(Figure 4-3)

Figure 4-3 AM I.F Adjustment

AM ANT

60cm

IFT1

IN

AM SSG
450KHZ

Speaker Terminal

INPUT

OUTPUT

OUTPUT

VTVM

4-1Samsung Electronics

SPEAKER JACK

L

R

FM

AM

ANT JACK

Figure 4-4

Figure 4-6

4-2 Cassette Deck

4-2-1 Test Equipment

1. Oscilloscope

2. VTVM

4-2-1(a) TAPE

1. MTT-111 (or equivalent) : Test tape on which 3KHz signal is recorded (Tape speed adjustmant)

2. MTT-5512 (or equivalent)

3. MTT-113CN (or equivalent) : Test tape on which 8KHz signal is recorded (Azimuth)

4. MTT-112B (or equivalent) : Test tape on which 1KHz signal is recorded (L.R. channel unbalance)

AZIMUTH Adjustment
Screw

REC PB Head

INSET

Frequency
Counter

Speaker
Terminal

SET

(GND)

VTVM

V H

Figure 4-5

Oscilloscope

IN

OUT

OUTPUT

Item

Connection

Preparation

Tape speed
(normal speed)
adjustment

Figure 4-4

Figure 4-4

3 KHz

5200Hz ~ 6600Hz

CVR1

JPT1

Tape speed
(high speed)

1) Insert MTT-111 to
Deck 2.

2)Press PLAY button.

1) Insert MTT-111 to
Deck 2.

2) Insert MTT-5512
to Deck1.

3) Press Hi-SPEED
button.

4) Press RECORD
button.

Remark

Adjustment Point

Samsung Electronics4-2

4-2-2 Location of Adjustment Points (Refer to page 4-1)

4-2-3 Adjustment Procedure

4-2-3(a) TAPE SPEED

4-2-3(b) AZIMUTH

1. DECK 1

2. DECK 2

Maximum output and
identical phase of L,R
channel.
Set the screw after
adjustment.

Maximum output and
identical phase of L,R
channel.
Set the screw after
adjustment.

Item

Connection

Preparation

AZIMUTH

Figure 4-5

L-CH R-CH

0.5dB

Figure 4-6

JSVR15L

L,R unbalance

Play MTT113N
in the DECK1.

Play MTT112B
in the DECK1.

Remark

Adjustment Point

Item

Connection

Preparation

AZIMUTH

Figure 4-5

Figure 4-6

Play MTT113N
in the DECK2.

Remark

Adjustment Point

3. Recording Frequency

85KHz

Item

Connection

Preparation

Bias oscillation
frequency

LL1

Record
MTT5512
in the DECK1.

Remark

Adjustment Point

Alignment and Adjustments