SAMSUNG MAX-KJ740
Manual de Servicio

Alignment and Adjustments

2. Cassette Deck
2-1. To Adjust Tape Speed
Notes 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 frequency counter as in figure 1-5.
MAIN PCB SPK OUT output Figure 1-5 Frequency Counter

2-2. To Adjust PlayBack Level/REC
Notes 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.

Step

Item

Pre-Setup Condition

Pre-Setup 1) Deck 1:MTT-111 2) Press PLAY SW button 3) Deck 2:Same as above

To Adjust

Standard

Remark

1. Adjust Deck 1 Play Level
Turn VSR1 to left and right (FRONT PCB) 3KHz ±1% range Step Item Pre-Setup Condition Pre-Setup After putting MTT AZIMUTH SPK OUT (VTVM is connected to the scope)
MAIN PCB
SPK OUT
VTVM

1

NOR SPEED Control

SPK OUT (connected to the frequency counter)

To Adjust

Standard

Remark

114N into Deck 1 - Press FWD PLAY button.

1
Recording /Play head Oscilloscope

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

Max output and same phase (both channels)

After adjustment secure it with REGION LOCK.

(GND)

In Out Figure 1-7

2. Adjust Deck 2 Play Level/ REC BIAS
Step Item Pre-Setup Condition
SPK OUT

AZIMUTH control screw
(RVS Play)

AZIMUTH control screw
(FWD Play)

Pre-Setup After putting MTT 114N into Deck 2 - Press FWD PLAY button.

To Adjust

Standard

Remark

Figure 1-6

1 AZIMUTH

(VTVM is connected to the scope)

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

MAX OUTPUT and same phase (both channels)

After adjustment secure it with REGION LOCK.

Audio OSC.

SET (MAIN PCB)

VTVM

Oscilloscope

After putting MTT -

2
IN AUX IN TP SPK OUT

Recording Bias Voltage

5512 into Deck 2 Fig 1-8
1) Press REC PLAY button. 2) T APE PCB JCW3 ,connected

- T JSR2L,JSR2R urn to the right and left

CHECK TO 7mV(±0.5mV)

IN OUT

to VTVM

Figure 1-8

Samsung Electronics

1-3