Page 1
1-1Samsung Electronics
1. Alignment and Adjustments
(Only MM-L4/L4G)
40
1.85
-0.05V),
Page 2
Alignment and Adjustments
1-2 Samsung Electronics
(OPTION)
LW
Page 3
Alignment and Adjustments
1-3Samsung Electronics
2970
3030
(Only MM-L4/L4G)
1- 3 Tuner
FM Section
FM IF AdjustmentFM IF Adjustment
SSG FREQ. 10.7MHZ DEV=40.0KHZ LEVEL=60dB
Adjustment point (T101) FM DETECTOR COIL
Remark Maximum output (Figure 1-1)
Freq. Setting Tune to the lowest
SET
Oscilloscope Oscilloscope
TP1 TP2
4P OUTPUT
*TP1:PIN 19 OF IC102 19 OF IC102
TP2:PIN 4 OF IC101
Input
IF GENERATOR
Figure Figure 1-1 IF CENTER Adjustment
FM Frequency Coverage Adjustment
SSG.FREQ. FREQ.SETTING ADJUST.POINT REMARK
87.5MHZ TUNE TO THE LOWEST L101 0.9V
108MHZ TUNE TO THE HIGHEST CHECK 6V
Digital DC Voltmeter
SET
C160
+ + -
Figure 1-2 FM Freq. Range Adjustment
(Only MM-L2/L2G)
Page 4
Alignment and Adjustments
1-4 Samsung Electronics
FM Sensitivity Adjustment
SSG.FREQ. FREQ.SETTING ADJUST.POINT REMARK
90MHZ 90MHZ L102 MAX. OUTPUT
106MHZ 98MHZ C161 MAX. OUTPUT
FM Stereo Separation Check
fc fs Main Pilot Level Spec
98.0MHZ 1KHZ 53% 10% 66dB Normal : 25dB Limit : 20dBNormal : 25dB Limit : 20dB
FM Seek Stop Check
fc fs Dev Level Spec.
Seek Stop 98MHZ 1KHZ 40KHZ 23-30dB
Output Output Level
FM ANT.
GND SET
FM SSG OSCILLOSCOPE VTVM
Figure 1-3 FM Stereo Separation AND Seek Stop Cheparation AND Seek Stop Ch
eck
AM (MW) SectionAM (MW) Section
AM (MW) IF Adjustment
IF GENERATOR 450KHZ
Frequency 999KHZ
Adjustment Point T102 AM IF COIL
Maximum output (Figure 1-4)
60cm AM ANT
T102
IF GENERATOR
450KHZ SET
OSCILLOSCOPE
Figure 1-4 AM IF Adjustment
MW Tuning Voltage (VT) Check
522KHZ : 0.9V+/-0.1V Spec.
1611KHZ : 7.25V+/-0.5V
Adjustment Low(522KHZ) VT Basic , Adjust T105(OSC)Low(522KHZ) VT Basic , Adjust T105(OSC)
RF Adjustment(Figure
1 Low Frequency(594KHZ), High Frequency(1404KHz),Usable Senc. (S/N 20dB) < 60dBLow Frequency(594KHZ), High Frequency(1404KHz),Usable Senc. (S/N 20dB) < 60dB
2 Adjust T104(MW ANT), Gain Adjust T104(MW ANT), Gain Output Max.
3 Adjust C162 Gain Output Max.
60cm AM ANT
AM SSG
450KHZ SET
Speaker terminal
VTVM Oscilloscope
Figure 1-5 MW RF. Adjustment
Seek Stop Check
fc fs Dev Level Spec.
999KHZ 400 HZ 30% 40-70dB
AM (LW) Section
Tuning Voltage (VT) Check
144KHZ : 1.0V +/- 0.2V Spec.
290KHZ : 6.0V+/-0.5V
Adjustment Low (144KHZ) VTLow (144KHZ) VT Basic , Adjust T106(OSC)
RF Adjustment
1 Low Frequency (170KHZ), High Frequency(270KHz),Usable Senc. (S/N 20dB) < 68dBLow Frequency (170KHZ), High Frequency(270KHz),Usable Senc. (S/N 20dB) < 68dB
2 Adjust T103 (LW ANT), Gain Output Max.
3 Adjust C183 (LW ANT), Gain Output Max.
Seek Stop Check
fc fs Dev Level Spec.
212KHZ 400KHZ 30% 40-70dB
Page 5
Alignment and Adjustments
1-5Samsung Electronics
1- Cassette Deck
Tape Speed Check
Item Tape Pre-setup Adjust point Standard Figure
Speed control MTT-111N
(3KHZ)
Press play
button after button after
putting tape tape
into the Deck
2970KHZ-3030KHZ
WOW&FLUTTER
0.2%-0.4%
1-6
Frequency Counter
Speaker Terminal
SET OSC VTVM WOW-FLUTTER METFLUTTER METER
Figure Figure 1 1-6
Adjust Record Frequency
Item Tape Pre-setup Adjust point Frequency rangeFrequency range Figure
Record
Frequency
MTT-5513 Press Rec.
button after
connecting
T431 60KHZ+/-1KHZ Figure(1-7)
SET SET
TP3 IN OUT
TP4
Oscilloscope Frequency Oscilloscope Frequency counter
Figure Figure 1 1-7
Adjust Azimuth
Item Tape Pre-Setup Adjust Point Standard Figure
Azimuth MTT-111CN Press Play
Button after
putting tape into
the Deck
Adjustment
screw of HEAD
8KHZ Fig. 1-6
Fig 1-8
Recording/play Recording/play head
AZIMUTH AZIMUTH Control
Figure 1 1-8
(Only MM-L2/L2G)
4
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