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INTERIOR COMPONENT SYSTEM S-2400/2450 SERVICE INTERIOR COMPONENT SYSTME Manual CONTENTS 1. Alignment and Adjustments 2. Disassembly and Reassembly ;;;;;;;;;; ;;;;;;;;;; ;;;;;;;;;; ;;;;;;;;;; 3. Exploded Views and Parts List 4. Electrical Parts List 5. Block Diagrams 6. PCB Diagrams 7. Wiring Diagram 8. Schematic Diagrams 9. Troubleshooting 10.IC Internal Diagram ELECTRONICS © Samsung Electronics Co.,Ltd. SEP. 2000 Printed in Korea Code no. AH68-00036D 1. Alignment and Adjustments 1-1 Tuner FM THD Adjustment SSG FREQ. Adjustment point (TL3) Output 98 MHz FM DETECTOR COIL 60dB Output GND FM SSG FM Antenna SET Terminal Oscilloscope output Input Speaker Terminal Input Distortion Meter Minimum Distortion (0.4% below) (Figure 1-3) Figure1-3 IF CENTER and THD Adjustment FM Search Level Adjustment Fig1-1 Adjustment location of Tuner part(MW/LW Band) 25 dB FM Antenna SET SSG FREQ. Adjustment point (TSR1) Output 98 MHz BEACON SENSITIVITY SEMI-VR(20K) 1kHz 25dB GND FM IN FM SSG Adjust TSR1 so that "TUNED" of FLT is lighted (Figure 1-4) TSR1 20 k Figure1-4 FM Auto Search Level Adjustment AM(MW)I.F Adjustment SSG FREQ. Frequency Adjustment point (TL2) 450MHz 522MHz AM I.F COIL Maximum Output(Figure 1-5) VTVM AM Signal Generator Test Loop Antenna AM Loop Antenna Jack SET 60 cm GND Figure1-5 AM I.F Adjustment Samsung Electronics 1-1 Speaker Terminal IN OUT Oscilloscope Fig1-2 Adjustment location of Tuner part(SW1/SW2 Band) Alignment and Adjustments 1-1-1 Test Equipment 1. 2. 3. 4. 5. 6. 7. AM Standard Signal Generator (S.S.G) : 400Hz, 30% MOD Oscilloscope VTVM Frequency counter Loop antenna Dummy load (3.2) DC voltmeter 1-1-2 Pre-Adjustment 1. 2. 3. 4. Check the source voltage Press TUNER/BAND to select the AM(MW) function. Set the EQ/P.SOUND control to OFF position. Set the volume control to approximaterly 50mw. 1-1-3 MW(AM)/LW/SW Adjustment Step 1 2 3 Item AM(MW)-OSC AM(MW)-RF LW-OSC LW-RF SW1-OSC SW1-RF SW2-OSC SW2-RF SSG. FREQ. 594 KHz 170 KHz 3.5MHz 10MHz FREQ. Setting Adjust. Point Remark Low Cover(Adj.)~High Cover(Check) 522~1611 KHz MW OSC 594 KHz 146~290 KHz 170 KHz 2.3~7.3MHz 3.5MHz 9.5~26.1 MHz 10MHz MW ANT LW OSC LW ANT SW1 OSC SW1 ANT SW2 OSC SW2 ANT MW 1.0( ±0.1V : Adj.) ~ 7.0V( ±0.1V : Check) Maximum output 1.0( ±0.1V : Adj.) ~ 7.0V( ±0.1V : Check) Maximum output 1.0( ±0.1V : Adj.) ~ 6.5V( ±0.5V : Check) Maximum output 1.0( ±0.1V : Adj.) ~ 6.5V( ±0.5V : Check) Maximum output LW 4 5 SW 6 7 8 TUNER PCB TP3 Input GND DC Voltmeter Figure 1-6 MW(AM)/LW/SW Adjustment 1-2 Samsung Electronics 2. Disassembly and Reassembly 2-1 Front Cabinet 1. Remove 13 screws of ! of its rear part.(1 screw of Antenna) 2. Remove Front Cabinet to frontward. 1 Fig 2-1 2-2 Main-PCB ASS'Y AND CD-MECHA ASS'Y 1. Remove 6 screws of B its rear part 2. Remove the connect wire of C,and remove Main-PCB ASS'Y to backward. 3. Remove 3 screws of A its rear part ,and remove CD-Mecha ASS'Y to backward. A B C Fig 2-2 Samsung Electronics 2-1