Samsung MAX-B420;MAX-B450;MAX-ZB450 free download

File name Samsung MAX-B420_MAX-B450_MAX-ZB450_sm.pdf

3 CD CHANGER MINI MINI COMPONENT MAX-B420 MAX-B450 MAX-ZB450 SERVICE MIMI MIMI COMPONENT SYSTEM Manual 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 1. Alignment and Adjustments 1-1 Tuner : MAXB420/MAXB450 FM THD Adjustment SSG FREQ. Adjustment point (TL3) Output 98 MHz FM DETECTOR COIL 60 dB Output GND FM S.S.G FM Antenna SET Terminal Oscilloscope Input Speaker Terminal output Distortion Meter Input Minumum Distortion (0.3% below) (Figure 1-1) Figure1-1 IF CENTER and THD Adjustment FM Search Level Adjustment SSG FREQ. Adjustment point (TSR1) Output 98 MHz BEACON SENSITIVITY SEMI-VR(5KЅ) 23 dB 5 kЅ 23 dB FM Antenna SET FM S.S.G GND FM IN * Adjustment Location of SW Band Adjust TSR1 so that "TUNED" of FLT is lighted (Figure 1-2) *Adjust FM S.S.G level to 23dB Figure1-2 FM Auto Search Level Adjustment AM(MW) I.F Adjustment SSG FREQ. Frequency Adjustment point (TL2) 450 kHz 522 kHz AM I.F COIL OUTPUT AM SSG 450KHZ INPUT 60cm TL2 AM ANT IN Speaker Terminal Maximum output (Figure 1-3) VTVM OUTPUT Oscilloscope * Adjustment Location of LW Band Figure1-3 AM I.F Adjustment Samsung Electronics 1-1 Alignment and Adjustments 1-2. Tuner: MAXZB450 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(10KЅ) 28 dB(±2dB) 20 kЅ 28 dB FM Antenna SET FM S.S.G GND FM IN * Adjustment Location of Tuner PCB AM(MW) OSC 522~1611 KHz Adjust SVR1 so that "TUNED" of FLT is lighted (Figure 1-2) SW1 OSC 2.3~7.3 MHz ITEAM Received FREQ. Adjustment point AM(MW) RF 594 KHz MA Maximum Output (Fig1-4) LW OSC 146~290 KHz AM(MW) RF 150 KHz LA Maximum Output (Fig1-4) SW1 RF 3.5MHz MA SW2 OSC 9.5~26.1MHz SW2 RF 10MHz MA *Adjust FM S.S.G level to 28dB Figure1-2 FM Auto Search Level Adjustment MO LO LO LO Output 1~7.0±0.5V 2~7.0±0.5V 1~8V±1V Maximum Output (Fig1-4) 1~8V±1V Maximum Output (Fig1-4) AM(MW) I.F Adjustment SSG FREQ. Frequency 450 kHz 522 kHz AM IF OUTPUT AM SSG 450KHZ INPUT 60cm AM IF AM ANT IN Speaker Terminal MAIN PCB VT GND TESTER Adjustment point Maximum output (Figure 1-3) VTVM OUTPUT Oscilloscope Figure1-3 AM I.F Adjustment Fig 1-4 OSC Voltage 1-2 Samsung Electronics Alignment and Adjustments 1-3 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 Aduust for (IR117) 1.0V±0.1V at the low. 2 1611KHz 1611KHz MW OSC Check for 7.0V±1.0V at the high