Page 1
1. Alignment and Adjustments
1-1 Tuner
Samsung Electronics 1-1
1-1-3 FM Adjustment
1-1-1 Test Equipment
1-1-2 Pre-Adjustment
1. AM/FM Standard Signal Generator (S.S.G)
- AM : 400Hz, 30% MOD - FM : 1KHz , 40KHz(Deviation)
2. Oscilloscope
3. VTVM
4. Frequency counter
5. Loop antenna
6. Dummy load (3Ω)
7. DC voltmeter
8. SW Dummy ANT
9. FM Stereo Modulator
10. FM/AM IF Generator : 10.7MHz,455kHz
1. Check the source voltage
2. Select desired Band and Function.
3. Set the SBS control to off position.
4. Set volume control to approximaterly 50mW(3ohm)
Intermediate
frequency (IF)
adjustment
FM frequency
coverage
adjustment
FM tracking
adjustment
Fig 1-3
1
2
4
5
3
Fig 1-2
Fig 1-3
10.7 MHz
87.3 MHz
Tune to
the lowest
FL2
FM OSC COIL
checked
Maximum output
Remark
FREQ. Setting
Adjust. Point
SSG.FREQ.Item
Step
Connection
Tune to
the lowest
Best resonating
point of SSG
Best resonating
point of SSG
109.5 MHz
Tune to
the highest
VC1
OSC TRIMMER
90 MHz
90 MHz
106 MHz 106 MHz
VC2
ANT TRIMMER
Stereo
separation
adjustment
6
Fig 1-3
Connect Stereo
generatorto S.S.G
additionally
98 MHz
98MHz
Not required
Not required
Not required
Page 2
1-2 Samsung Electronics
1-1-4 AM Adjustment
Intermediate
frequency (IF)
adjustment
AM frequency
coverage
adjustment
AM tracking
adjustment
Figure 1-4
Connect DC voltmeter to AM
VT(OR10) and GND
1
2
4
5
3
Figure 1-5
Figure 1-5
455 KHz
600 KHz
Figure 1-4
SET
60 cm
AM Signal
Generator
Test Loop
Antenna
Speaker
Terminal
VTVM
IN
OUT
GND
Oscilloscope
AM-ANT
Figure 1-5
SET
AM VT(OR10)
GND
Input
DC Voltmeter
600 KHz
515 KHz
1400 KHz 1400 KHz
-
Maximum output
Maximum output
Remark
FREQ. Setting
Adjust. PointSSG.FREQ.Item
Step
Connection
Alignment and Adjustments
Dummy Load(3Ω)
1-1-5 MW/LW
Maximum output
Fig 1-3
FM
SSG
75Ω
Dummy
Stereo
Modulator
(Pilot 10%)
OUT
Oscilloscope
FM antenna : FTP1
SET
Speaker
OUT
EXT
GND
VTVM
GND
3.2 ohm load
Fig 1-2
Input o
output o
IF GENERATOR
GND
O
PIN 19 OF FIC1
O
FTP1 BODY
O
GROUND
O FTP2
TUNER PART
OSC TRIMMER
: VC4
Tune to
the lowest
AM IFT
: IT 1(WHT)
AM OSC COIL
: OT 1
Tune to
the lowest
Tune to
the highest
ANT TRIMMER
: VC3
1680 KHz
(1780)KHz
AM ANT COIL
Best responding
point of SSG
Best responding
point of SSG
Intermediate
frequency (IF)
adjustment
AM frequency
coverage
adjustment
AM tracking
adjustment
Fig 1-5
1
2
4
5
3
Fig 1-5
600 KHz
600 KHz
AM ANT
COIL
VC3
VC4
1680 KHz
515 KHz
LW ANT
COIL
OT1
Best responding
point of SSG
Maximum output
Maximum output
Remark
FREQ. Setting
Adjust.
Point
SSG.FREQ.
Item
Step
Connection
Tune to
the lowest
Best responding
point of SSG
Tune to
the highest
1400 KHz
1400 KHz
Maximum output
IF is the same as 2 band’s
6
Fig 1-5
145 KHz
Tune to
the lowest
OT2
Best responding
point of SSG
295KHz
Tune to
the highest
OCT4
Best responding
point of SSG
LW frequency
coverage
adjustment
7
9
8
LW tracking
adjustment
Fig 1-5
170MHz
170 MHz
250 MHz
250 MHz
Not
required
Page 3
Samsung Electronics 1-3
1-2 Cassette Deck
Alignment and Adjustments
1-2-1. Recording BIAS adjustment
1) Connect frequency counter to JC2 (See Fig.1-6)and press the Record button.
2) Adjust JT1 (BIAS OSC COIL) until frequency counter reads 85KHz.
1-2-2. Tape AZIMUTH adjustment
1) Connect the equipments as per Fig.1-8 to adjust the tape azimuth with
test tape (recorded at 6.3KHz : MTT-113N)
2) Play the test tape after inserting in DECK.
3) Adjust the azimuth ajustment screw of left side of record/play head for maximum
output and for the same channel phase. (see Fig.1-7)
1-2-3. Tape speed adjustment
1) Connect the equipments as shown in Fig.1-8 adjust the tape speed with
test tape (recorded at 3KHz : MTT-111N)
2) Adjust SEMI VOLUME OF Deck PCB until frequency counter reads 3KHz±1%.
Fig.1-6 Recording bias adjustment
Fig.1-8
Fig.1-7 Azimuth speed adjustment
JC2
85KHz
FREQUENCY
COUNTER
PRE/REC PART
Adjustment
Adjustment screw
R/P head
UNIT
UNDER TEST
VTVM
OSCILLOSCOPE
FREQUENCY
COUNTER
3000Hz
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