SAMSUNG MAX-VL69
Manual de Servicio

Alignment and Adjustments

1-2 Cassette Deck
1-2-1To Adjust Tape Speed
Notes 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. Pre-Setup Condition OUT (connected to the frequency counter) as above
Cassette Deck SPK OUT output Figure 1-5 Frequency Counter 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.

1-2-4 To Adjust PlayBack Level/REC
Notes

Step

Item

Pre-Setup 1) Deck 1:MTT-111

To Adjust

Standard

Remark

1. Adjust Deck 1 Play Level
Step Item AZIMUTH Pre-Setup Condition SPK OUT (VTVM is connected to the scope) SPK OUT (VTVM is connected to the scope) Pre-Setup After putting MTT114N into Deck 1 - Press FWD PLAY button. After putting MTT112 into Deck 1 - Press FWD PLAY button. To Adjust - Turn the control screw to as shown in Figure 1-6. Standard Max output and same phase (both channels) Remark After adjustment secure it with REGION LOCK.

1

NOR SPEED Control

2) Press PLAY SW button 3) Deck 2:Same

Turn USR1 to left and right (FRONT PCB)

3KHz

±1% range

1

1-2-2. Adjust REC Bias Voltage
2 Step Item REC Bias Voltage Pre-Setup Condition Connect to JCW3 as in Fig.1-8 and read the VTVM. Pre-Setup Input MTT-5512 into Deck2,then press REC button. Step To Adjust Turn JL1 to the right and left.
105KHz±0.5KHz

Play back out Level1

- L-CH ; Turn JSR1L - R-CH ; Fixed

Max output and same phase (both channels)

Standard

Remark MAIN PCB

1

2. Adjust Deck 2 Play Level/REC BIAS
Item Pre-Setup Condition SPK OUT AZIMUTH (VTVM is connected to the scope) Pre-Setup After putting MTT114N into Deck 2 1)Press FWD PLAY button.
After putting MTT5512 into Deck 2

To Adjust

Standard

Remark After adjustment secure it with REGION LOCK.

1-2-3. Adjust L,R UNBALANCE
1 Step Item L,R UNBALANCE Pre-Setup Condition Connect to JCW3 as in Fig.1-8 and read the VTVM. Pre-Setup Input MTT-112B into Deck2,then press PLAY button. To Adjust Turn JSR2R to the right and left. Standard Remark MAIN PCB 2 Recording Bias Voltage

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

Max output and same phase (both channels)

1

±0.5dB

Fig 1-8

1)Press REC PLAY button. 2)MAIN PCB JCW3, connectted to VTVM SET (MAIN PCB)
LINE OUT IN TP JCW3

Turn JSR2L,JSR2R to the right and left

7mV(±0.5mV)

Recording /Play head Cassette Deck
SPK OUT

VTVM

Oscilloscope

Audio OSC.

VTVM

Oscilloscope

(GND)

In Out Figure 1-7

AUX IN

IN OUT

AZIMUTH control screw Figure 1-6

Figure 1-8 Samsung Electronics

1-2