SAMSUNG RCDS75QH Service Manual
RADIO CASSET TE RECORDER
CD PLAYER
RCD-S70/ S75
SERVICE
Manual
RADIO CASSETTE RECORDER CD PLAYER
CONTENTS
1. Alignment and Adjustments
2. Exploded Views and Parts List
3. Electrical Parts List
4. Block Diagrams
5. PCB Diagrams
6.Wiring Diagram
7. Schematic Diagrams
ELECTRONICS
© Samsung Electronics Co.,Ltd. JUNE 2002
Printed in Korea
Code no.AH68-01107T
1. Alignment and Adjustments
1-1 T uner
Samsung Electronics 1-1
FM THD Adjustment
Minimum Distortion (Figure 1-1)
SSG FREQ.
Adjustment
point
(FM-DET)
98 MHz
FM DETECTOR COIL
FM Search Level Adjustment
Adjust SVR1 so that “Voltage” of GND and
CON(6pin) is 0V (Figure 1-2)
Figure1-2 FM Auto Search Level Adjustment
Figure1-1 IF CENTER and THD Adjustment
SSG FREQ.
Adjustment
point
(SVR1)
98 MHz
BEACON
SENSITIVITY
SEMI-VR(10KΩ)
FM SSG
GND
26 dB
FM SSG
Output
GND
Speaker
Terminal
FM
Antenna
Terminal
Distortion Meter
Input
SET
Input
output
Oscilloscope
FM IN
FM Antenna
SET
10 kΩ
FREQ:1KHz
MOD : 40KHz DEV
Voltmeter
1-2 Samsung Electronics
1-1-1 T est Equipment
1-1-2 Pre-Adjustment
1-1-3 AM Adjustment
1. AM Standard Signal Generator (S.S.G) :400Hz, 30% MOD
2. Oscilloscope
3. VTVM
4. Frequency counter
5. Loop antenna
6. Dummy load (4Ω)
7. DC voltmeter
1. Check the source voltage
2. Press TUNER/BAND to select the AM(MW) function.
3. Set the EQ/S.BASS control to OFF position.
4. Set the volume control to approximaterly 50mw (4Ω)
Intermediate
frequency (IF)
adjustment
AM frequency
coverage
adjustment
AM tracking
adjustment
Figure 1-4
Connect DC voltmeter to
AM VT(JW8) and GND
1
2
4
5
3
Figure 1-5
Figure 1-5
450 KHz
594 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(JW8)
GND
Input
DC V oltmeter
594 KHz
MW-ANT
-
-- -
1611KHz
-
-
522 KHz
522 KHz
AM-IF
MO
1.2V
Maximum output
Maximum output
No Adjustment
Remark
FREQ. Setting
Adjust. Point
SSG.FREQ.Item
Step
Connection
Alignment and Adjustments
Dummy Load(4Ω)
1-1-4 MW/LW
Intermediate
frequency (IF)
adjustment
MW frequency
coverage
adjustment
MW tracking
adjustment
Fig 1-4
1
2
4
5
3
Fig 1-5
594 KHz
594 KHz
MW ANT
COIL
-
OCT2
-
-
LW ANT
COIL
OT1
1.0V(LOW)
Maximum output
Maximum output
Remark
FREQ. Setting
Adjust.
Point
SSG.FREQ.
Item
Step
Connection
522 KHz
4.6V(HIGH)
1611 KHz
1404 KHz
-
6
Fig 1-4
-
144 KHz
OT2
0.7V(LOW)
-
290 KHz
OCT4
3.1V(HIGH)
LW frequency
coverage
adjustment
7
9
8
LW tracking
adjustment
Fig 1-5
170KHz
170 KHz
270KHz
-
-
Fig 1-5
450 KHz 522 KHz
IT2
Maximum output
-
No Adjustment
No Adjustment
No Adjustment
Samsung Electronics 1-3
1-2 Cassette Deck
Alignment and Adjustments
1-2-1. Recording BIAS adjustment
1) Connect frequency counter to JW18 (See Fig.1-6)and press the Record button.
2) Adjust KT1 (BIAS OSC COIL) until frequency counter reads 105 KHz.
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)
Fig.1-6 Recording bias adjustment
Fig.1-8
Fig.1-7 Azimuth speed adjustment
Samsung Electronics
2-1
2.Exploded Views and Parts List
2-1 Cassette Deck Exploded View and Parts List
2-1-1 RCD-S70
No. Code No. Description Specification Remarks
AH59-01085A DECK-CASSETTE ADR248DSW2
1 AH81-00423A A/S-HEAD YB-7442CB09 MT59-00054A
2 AH81-00714A A/S-ASS’Y MOTOR ADR2400-CCM09-093L2 9V
3 AH81-00364A A/S-BELT MAIN1 ADR246DSW 6602-001056
4 AH81-00365A A/S-BELT MAIN2 ADR246DSW 6602-001057
5 AH81-00101A A/S-BELT SUB ADR2400S,34.7 6602-001055
6 AH81-00731A A/S PART-SOLENOID 10 OHM (9V) MT75-K0001A
7 AH81-00424A A/S-E-HEAD E-621RM MT59-00055A
2-2 Samsung Electronics
No. Code No. Description Specification Remarks
AH59-01069A DECK-CASSETTE ADR248AMW2
1 AH81-00098A A/S-HEAD ASSY TR981A,14KHZ MT91-11011S
2 AH81-00423A A/S-HEAD YB-7442CB09 MT59-00054A
3 AH81-00714A A/S-ASS’Y MOTOR ADR2400-CCM09-093L2 9V
4 AH81-00364A A/S-BELT MAIN1 ADR246DSW 6602-001056
5 AH81-00365A A/S-BELT MAIN2 ADR246DSW 6602-001057
6 AH81-00101A A/S-BELT SUB ADR2400S,34.7 6602-001055
7 AH81-00731A A/S PART-SOLENOID 10 OHM (9V) MT75-K0001A
2-1-2 RCD-S75
Samsung Electronics
2-3
Samsung Electronics
2-3
2-2 Main Exploded View and Parts List
2-2-1 Exploded View ; RCD-S70/S75
Samsung Electronics2-4 Samsung Electronics
2-2-2 Parts List
No. Code No. Description Specification Remarks
1 AH64-01915B CABINET-FRONT HIPS, L/GRAY RCD-S75
AH64-01915C CABINET-FRONT HIPS, D/GRAY RCD-S70
2 AH64-01931A GRILLE L EGI T0.6 RCD-S75
AH64-01931B GRILLE L EGI T0.6 RCD-S70
3 AH64-01932A GRILLE R EGI T0.6 RCD-S75
AH64-01932B GRILLE R EGI T0.6 RCD-S70
4 AH64-01921B DOOR-CD ABS, L/GRAY RCD-S75
AH64-01921C DOOR-CD ABS, D/GRAY RCD-S70
5 AH64-01920B WINDOW-LCD PMMA CLEAR RCD-S75
AH64-01920C WINDOW-LCD PMMA CLEAR RCD-S70
6 3001-001276 SPEAKER WOOFER 93MM, 5W
7 3001-001277 SPEAKER TWEETER 51MM, 5W
8 AH64-01925B KNOB-EJECT ABS, L/GRAY RCD-S75
AH64-01925C KNOB-EJECT ABS, D/GRAY RCD-S70
9 AH64-01924B KNOB-POWER ABS, L/GRAY RCD-S75
AH64-01924C KNOB-POWER ABS, D/GRAY RCD-S70
10 AH61-01080A HOLDER-JACK ABS
11 AH67-00177A LENS-CD PMMA BLUE
12 AH63-00438A FILTER-LCD PC T0.16
13 AH67-00178A LENS-LCD PMMA CLEAR
14 AH61-01079A HOLDER-LCD ABS WHITE
15 AH64-01930B KNOB-CONTROL ABS, L/GRAY RCD-S75
AH64-01930C KNOB-CONTROL ABS, D/GRAY RCD-S70
16 AH67-00179C LENS-CONTROL REW PMMA CLEAR
17 AH67-00179D LENS-CONTROL STOP PMMA CLEAR
18 AH67-00179B LENS-CONTROL FF PMMA CLEAR
19 AH64-01927B KNOB-FUNCTION ABS, L/GRAY RCD-S75
AH64-01927C KNOB-FUNCTION ABS, D/GRAY RCD-S70
20 AH64-01928B KNOB-TUNER ABS, L/GRAY RCD-S75
AH64-01928C KNOB-TUNER ABS, D/GRAY RCD-S70
21 AH64-01929B KNOB-DECK ABS, L/GRAY RCD-S75
AH64-01929C KNOB-DECK ABS, D/GRAY RCD-S70
22 AH64-01926B KNOB-VOLUME ABS, L/GRAY RCD-S75
AH64-01926C KNOB-VOLUME ABS, D/GRAY RCD-S70
23 AH95-50001A LATCH ASSY MAX 555
24 AH61-80030A DAMPER ASSY POM M0.8
25 AH64-01917B CABINET-TOP HIPS, L/GRAY RCD-S75
AH64-01917C CABINET-TOP HIPS, D/GRAY RCD-S70
26 AH61-01091A SPRING-DOOR L PWR
27 AH61-01092A SPRING-DOOR R PWR
28 AH61-01076A HOLDER-CASSETTE L PC ABS, L/GRAY RCD-S75
AH61-01076B HOLDER-CASSETTE L PC ABS, D/GRAY RCD-S70
29 AH61-01077A HOLDER-CASSETTE R PC ABS, L/GRAY RCD-S75
AH61-01077B HOLDER-CASSETTE R PC ABS, D/GRAY RCD-S70
30 AH64-01946B DOOR-CASSETTE L PC ABS, L/GRAY RCD-S75
AH64-01946C DOOR-CASSETTE L PC ABS, D/GRAY RCD-S70
31 AH64-01947B DOOR-CASSETTE R PC ABS, L/GRAY RCD-S75
AH64-01947C DOOR-CASSETTE R PC ABS, D/GRAY RCD-S70
32 AH64-01918B WINDOW-CASSETTE L PMMA SMOKE RCD-S75
AH64-01918C WINDOW-CASSETTE L PMMA SMOKE RCD-S70
33 AH64-01919B WINDOW-CASSETTE R PMMA SMOKE RCD-S75
AH64-01919C WINDOW-CASSETTE R PMMA SMOKE RCD-S70
34 AH61-01082A BRACKET-DECK L EGI T1.2
35 AH61-01083A BRACKET-DECK R EGI T1.2
36 AH61-01084A BRACKET-DECK CENTER EGI T1.2
37 AH64-01085A BRACKET-CD EGI T1.2
38 AH62-00068A HEAT-SINK AL T2.5
39 AH61-01081A HOLDER-PCB ABS
40 AH61-01086A BRKT-ANTENNA SPTE T0.5
41 AH61-01090A SPRING BATTERY SP SUS304
42 AH64-01916B CABINET-BACK HIPS, L/GRAY RCD-S75
AH64-01916C CABINET-BACK HIPS, D/GRAY RCD-S70
43 AH63-00429B COVER BATTERY ABS, L/GRAY RCD-S75
AH63-00429C COVER BATTERY ABS, D/GRAY RCD-S70
44 AH64-01922B HANDLE ABS, L/GRAY RCD-S75
AH64-01922C HANDLE ABS, D/GRAY RCD-S70
45 AH61-01088A SPRING BATTERY PM SUS304
46 AH61-01089A SPRING BATTERY SM SUS304
47 AH61-01087A SPRING BATTERY M SUS304
No. Code No. Description Specification Remarks
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