Samsung HT-DB300 User manual

DVD RECEIVER AMP
HT-DB300
HT-DB350
HT-DB1350
HT-DB1650
SERVICE Manual
DVD RECEIVER AMP SYSTEM 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
8. IC block Diagrams
9.Troubleshooting
- Confidential -
ASC LSM V-H/P

ELECTRONICS
© Samsung Electronics Co.,Ltd. APR. 2003
Printed in Korea
Code no. AH68-01225S

1-1Samsung Electronics
1. Alignment and Adjustments
1.Tuner
FM THD Adjustment
Output
Output 28 dB(±2dB)
60 dB
Minumum Distortion (0.4% below)
(Figure 1-1)
SSG FREQ.
Adjustment
point
(FM DET)
98 MHz
FM DETECTOR COIL
FM Search Level Adjustment
Adjust SVR1 so that “TUNED” of FLT is
lighted (Figure 1-2)
Figure1-2 FM Auto Search Level Adjustment
*Adjust FM S.S.G level to 28dB
Figure1-1 IF CENTER and THD Adjustment
SSG FREQ.
Adjustment
point
(SVR1)
98 MHz
BEACON
SENSITIVITY
SEMI-VR(20KΩ)FM S.S.G GND
28 dB
FM S.S.G
Output
GND
Speaker
Terminal
FM
Antenna
Terminal
Distortion Meter
Input
SET
Input
output
Oscilloscope
FM IN
FM Antenna
SET
10 kΩ
OUTPUT
AM SSG
450KHZ
INPUT
AM ANT
IN
Speaker Terminal
60cm
AM IF
VTVM Oscilloscope
AM(MW) I.F Adjustment
Maximum output (Figure 1-3)
SSG FREQ.
Frequency
Adjustment
point
450 kHz
522 kHz
AM IF
Figure1-3 AM I.F Adjustment
OUTPUT
* Adjustment Location of Tuner PCB
Fig 1-4 OSC Voltage
AM(MW) OSC
Adjustment
Output 1~7.0±0.5V
Received FREQ.
Adjustment
point
522~1611 KHz
MO
AM(MW) RF
Adjustment
ITEAM
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
Maximum
Output(Fig1-4)

Samsung Electronics 2-1
2.Exploded Views and Parts List
2-1 Total Exploded View ; HT-DB300

Samsung Electronics
2-2
* Parts List of Total Exploded view ;HT-DB300
No. Code No. Description Specification Q’ty REMARK
1 AH64-02467A BADGE-SAMSUNG AL 30mm,GRAY 1
2 AH64-02318C PANEL-FRONT AL 1.8T 1 America (P.SCAN)
AH64-02318D EUROPE (RDS)
AH64-02318E ASIA
3 AH67-00211A LENS-POWER PMMA MILKY 1
4 AH64-02429A WINDOW-DVD H/M ACRYL 3.0T 1
5 AH64-02466A WINDOW-VFD H/M ACRYL 3.0T 1
6 AH61-01279A BRKT-DOOR SPTE 0.5T 1
7 AH61-01277A HOLDER-DOOR PC ABS (G:20%) 1
8 AH61-01280A SPRING-DOOR SUS 0.3T 1
9 AH64-02319B CABINET-FRONT MIPS GRAY 1
10 AH64-02321A KNOB-FUNCTION ABS GRAY 1
11 AH64-02320A DOOR-TRAY ABS NATURAL 1
12 AH64-02316A CABINET-BOTTOM SECC 1.0T 1
13 AH81-01117A A/S-VOLUME ASSY HT-DB300/750 1
14 AH67-00210A LENS-VOLUME PMMA CLEAR 1
15 AH73-00005A CUSHION-FOOT EVA 2.0T 4
16 AH61-01356A BRKT-DUCT SECC 0.6T 1
17 AH64-02317C CABINET-REAR SECC 0.8T 1 EUROPE
AH64-02317D AMERICA, ASIA
AH64-02317E ASIA (Dual Voltage)
18 AH31-00039A MOTOR-FAN RDM5015S 1
19 AH63-00517A COVER-FAN ABS GRAY 1
20 AH64-02315B CABINET-TOP SECC 0.6T 1
A 6003-001499 SCREW-TAPTITE BWH DOT6 3*8 12
B 6002-000126 SCREW-TAPPING FH M3*10 BLK 2
C AH60-10020D SCREW-TAP TITE RH M2.6*8 YEL 8
D 6003-000276 SCREW-TAP TITE BH 3 * 10 YEL 7
E AH60-10108A SCREW-TAP TITE HP10,BH 3*10 YEL 1
F 6002-000398 SCREW-TAP TITE BH M3*6 YEL 14
G AH60-00014A SCREW-TAP TITE TH M4*6 YEL 4
H AH60-00025A SCREW-TAP TITE BH M3*10 SILVER 16

Samsung Electronics 2-3
2-2 Total Exploded View ; HT-DB350/ HT-DB1350/ HT-DB1650

Samsung Electronics
2-4
* Parts List of Total Exploded view ;HT-DB350/ HT-DB1350/ HT-DB1650
No. Code No. Description Specification Q’ty REMARK
1 AH64-02467A BADGE-SAMSUNG AL 30mm,GRAY 1
2 AH64-02318G PANEL-FRONT AL 1.8T, AMERICA (P.SCAN) 1 HT-DB350
AH64-02318H AL 1.8T, EUROPE (RDS) HT-DB350
AH64-02318J AL 1.8T, ASIA HT-DB350
AH64-02318M AL 1.8T, EUROPE (RDS) HT-DB1350
AH64-02318V AL 1.8T, XFO(RUSSIA) HT-DB1650
AH64-02318W AL 1.8T, EUROPE (RDS) HT-DB1650
3 AH67-00211A LENS-POWER PMMA MILKY 1
4 AH64-02429A WINDOW-DVD H/M ACRYL 3.0T 1
5 AH64-02466A WINDOW-VFD H/M ACRYL 3.0T 1
6 AH61-01279A BRKT-DOOR SPTE 0.5T 1
7 AH61-01277A HOLDER-DOOR PC ABS (G:20%) 1
8 AH61-01280A SPRING-DOOR SUS 0.3T 1
9 AH64-02319B CABINET-FRONT MIPS GRAY 1
10 AH64-02321A KNOB-FUNCTION ABS GRAY 1
11 AH64-02320A DOOR-TRAY ABS NATURAL 1
12 AH64-02316A CABINET-BOTTOM SECC 1.0T 1
13 AH81-01117A A/S-VOLUME ASSY HT-DB300/750 1
14 AH67-00210A LENS-VOLUME PMMA CLEAR 1
15 AH64-02322A KNOB-DSP ABS GRAY 1
16 AH67-00209A LENS-DSP PMMA MILKY 3
17 AH73-00005A CUSHION-FOOT EVA 2.0T 4
18 AH61-01356A BRKT-DUCT SECC 0.6T 1
19 AH64-02317C CABINET-REAR SECC 0.8T, EUROPE 1
AH64-02317D AMERICA, ASIA
AH64-02317E ASIA (Dual Voltage)
20 AH31-00039A MOTOR-FAN RDM5015S 1
21 AH63-00517A COVER-FAN ABS GRAY 1
22 AH64-02315B CABINET-TOP SECC 0.6T 1
A 6003-001499 SCREW-TAPTITE BWH DOT6 3*8 12
B 6002-000126 SCREW-TAPPING FH M3*10 BLK 2
C AH60-10020D SCREW-TAP TITE RH M2.6*8 YEL 8
D 6003-000276 SCREW-TAP TITE BH 3 * 10 YEL 7
E AH60-10108A SCREW-TAP TITE HP10,BH 3*10 YEL 1
F 6002-000398 SCREW-TAP TITE BH M3*6 YEL 14
G AH60-00014A SCREW-TAP TITE TH M4*6 YEL 4
H AH60-00025A SCREW-TAP TITE BH M3*10 SILVER 16

2-5Samsung Electronics 2-5
2-3 DVD MECHA Exploded View and Parts list
No. Code No. Description ; Specification
AH59-01153A DECK-MECHA ASS’Y CMS-SD100
1 AH61-01293A BASE-MAIN ABS BLK
2 AH63-00535A TRAY-DISC ABS D/GRAY
3 AH66-00214A LEVER-LIFT ABS+GF20%
4 AH66-00215A PULLEY-MOTOR POM WHT
5 AH66-00216A GEAR-PULLEY TPE WHT
6 AH66-00217A GEAR-TRAY POM WHT
7 AH61-01295A CLAMPER-BRKT SECC t0.8
8 AH63-00536A CLAMPER-MOLD POM WHT
9 AH66-00218A SLIDE-CAM PC WHT
10 AH61-01296A HOLDER-BRACKET SECC t0.8
11 AH31-00030B MOTOR-DC RF-300E-1D390
12 AH41-00560A PCB-SWITCH 43.5 * 32.5
13 AH66-00219A BELT-PULLEY CR 1.2
14 3409-001119 SWITCH-DETECTOR JDS2200
15 AH59-01184A DVD-DECK ASSY CMS-S51PG4
16 6001-001257 SCREW-MACHINE 1.7*3(W4.5)
17 AJ60-10001A SCREW-TAP WASHER 6.8
18 6003-000152 SCREW-TAP 2*10.12
19 AH73-00058A RUBBER-CD SILICON 30
20 0205-001106 GREASE GX-99004
21 0205-001109 GREASE DM-523
22 6003-000283 SCREW TAP 3*8
23 AH02-00038A TAPE 10mm*80mm
24 3809-001451 CABLE-FLAT 60mm 24P
25 3302-001505 MAGNET CHUCK 190 gf
26 AH30-00055A PICK-UP 4P.JST
27 AH39-00495A WIRE-HARNESS UL1007,#28,70mm
28 AH39-00496A WIRE-HARNESS UL1007,#28,65mm

2-6 Samsung Electronics
2-6
2-4 SPEAKER Exploded View and Parts list
* CAUSION : It is used the bonding, connect NET FRAME(or FRONT PANEL ASS’Y) to CABINET ASS’Y.
So when the disassembly, take extreme care not to demage the SPEAKER.
* Satellite Speaker
* Center Speaker * SUBWOOFER
2-4-1 HT-DB300 / HT-DB350

Samsung Electronics 2-7
2-4-2 HT-DB1350
* CAUSION : It is used the bonding, connect NET FRAME(or FRONT PANEL ASS’Y) to CABINET ASS’Y.
So when the disassembly, take extreme care not to demage the SPEAKER.
* Satellite Speaker
* Center Speaker
* SUBWOOFER