Text preview for : 02_Alignment_&_Adjustment.pdf part of SAMSUNG MAX-S520_S530_ZS530 Service manual
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1. Alignment and Adjustments
1-1. Tuner
FM THD Adjustment SSG FREQ. Adjustment point (FM DET) Output 98 MHz FM DETECTOR COIL 60 dB
Output GND FM S.S.G
FM Antenna SET Terminal Input Speaker Terminal output Distortion Meter
Oscilloscope
Input
Minumum Distortion (0.4% below) (Figure 1-1)
Figure1-1 IF CENTER and THD Adjustment
FM Search Level Adjustment SSG FREQ. Adjustment point (SVR1) Output 98 MHz BEACON SENSITIVITY SEMI-VR(10K) 28 dB(±2dB)
20 k 28 dB FM Antenna
SET FM S.S.G GND FM IN
* Adjustment Location of Tuner PCB
Adjust SVR1 (Figure 1-2) *Adjust FM S.S.G level to 28dB
ITEAM
Received FREQ. Adjustment point
AM(MW) OSC Adjustment 522~1611 KHz MO 1~7.0±0.5V
AM(MW) RF Adjustment 594 KHz MA
Maximum Output(Fig1-4)
LW OSC Adjustment 146~290 KHz LO 2~7.0±0.5V
LW RF Adjustment 150 KHz LA AM(MW) I.F Adjustment
Maximum Output(Fig1-4)
Figure1-2 FM Auto Search Level Adjustment
60cm AM IF OUTPUT AM SSG 450KHZ
INPUT
Output
SSG FREQ. Frequency Adjustment point
450 kHz 522 kHz AM IF
AM ANT IN
Speaker Terminal
Maximum output (Figure 1-3)
VTVM
OUTPUT
Oscilloscope
Figure1-3 AM I.F Adjustment
Fig 1-4 OSC Voltage
Samsung Electronics 1-1
Alignment and Adjustments
1-1-2 AM(MW),LW,SW1,SW2 Adjustment
Circuit to be Adjusted Measuring Instrument & Step Arrangement S.S.G Radio dial Adjusting Frequency Setting Point Adjust for
1 OSC Connect AM signal generator to loop antenna,VTVM AND oscilloscope (Fig 1-3)
522KHz
522KHz
MW OSC
Adjust for (IR117)
1.0V±0.1V at the low.
2
1611KHz
1611KHz
MW OSC
Check for 7.0V±1.0V at the high.
(IR117)
AM (MW) RF " 1 594KHz 594KHz MW ANT Maximum out
INTER FREQ
" Fig 1-3
1 1 2
455KHz
522KHz 146KHz 290KHz
TL2 LW OSC LW OSC LW ANT SW1 OSC SW1 ANT SW2 OSC SW2 ANT
Maximum out Adjust for
2.0V±0.1V at the low.
OSC LW RF OSC SW1 RF OSC SW2 RF
Check for 7.0V±1.0V at the high.
1 Fig 1-3 1 2 1 Fig 1-3 1 2 1
150KHz
150KHz 2.3MHz 7.3MHz
Maximum out Adjust for
1.0V±0.1V at the low.
Check for 8.5V±1.0V at the high.
3.5MHz
3.5MHz 9.5MHz 26.1MHz
Maximum out Adjust for
1.5V±0.1V at the low.
Check for 8.0V±1.0V at the high.
10MHz
10MHz
Maximum out
1-2
Samsung Electronics
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 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.
SPK OUT output Figure 1-5
Step
Item
Pre-Setup Condition SPK OUT (connected to the frequency counter)
Pre-Setup 1) Deck 1:MTT-111 2) Press PLAY SW button 3) Deck 2:Same as above
To Adjust
Standard
Remark
1
NOR SPEED Control
Turn VSR1 to left and right (FRONT PCB)
3KHz
±1% range
1. Adjust Deck 1 Play Level
Step Item Pre-Setup Condition SPK OUT (VTVM is connected to the scope) Pre-Setup After putting MTT 114N into Deck 1 - Press FWD PLAY button. To Adjust - T the control urn screw to as shown in Figure 1-6. Standard Remark
1
Recording /Play head MAIN PCB
SPK OUT
VTVM
AZIMUTH
Max output and same phase (both channels)
Oscilloscope
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 to VTVM
- T JSR2L,JSR2R urn to the right and left
CHECK TO 7mV(±0.5mV)
IN OUT
Figure 1-8
Samsung Electronics
1-3