NAD 4300 Service Manual Download | Manualshive

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Summary of Contents for 4300

Page 1: ...NAD SERVICE a MONITOR SERIES 4300 STEREO TUNER ...

Page 2: ...d others Cl W Germany TABLE OF CONTENTS PAGE LOCATION MAP 2 SPECIFICATION 3 INTERNAL VIEW 4 SUGGESTED INSTRUMENTATiON HOOKUP 5 FM ALIGNMENTS 6 9 AM ALIGNMENTS 101l WIRiNG DiAGRAM 12 13 P C B LAYOUT DIAGRAM 14 15 SCHEMATIC DIAGRAM 16 17 EXPLODED VIEW PARTS LIST 18 19 EXPLODED VIEW 20 ELECTRICAL PARTS LIST 21 23 ...

Page 3: ...5 45 65 dBf AM rejection Selectivity Image rejection R F intermodulation I F rejection SCA rejection Pilot suppression 19 38 kHz THD at 100 modulation S N ratio A weighted 65 dBf Frequency response 15 15 kHz Stereo separation FM NR off FRONT PANEL 1 Power 2 Station Pre sets 3 Memory Enter 4 Tuning Display 5 FM Stereo Indicator 6 IF Narrow Indicator 4 5 7 6 7 AM FM 8 I F Narrow 9 FM NR Oft 10 Mono ...

Page 4: ...INTERNAL VIEW 4 ...

Page 5: ...and ground 2 Tune to 88MHz and adjust L 6 if the voltage is incorrect TOLERANCE 3 6V 0 5V 3 Tune to 108MHz and confirm that the voltage is within the following specification SPECIFICATION 21 25V b TRACKING 1 Connect FM Generator 150KHz sweep 100V output to 75ohm antenna input and Detector Probe to Pin 1 of IC 102 with ground to the tunershield 2 Set tuner to 106MHz entor into Preset 8 and tune the...

Page 6: ...t reference for S N measurement With reference set cancell the stereo modulation and leave pilot tone only 2 Adjust the attenuator of FM Generator so that S N ratio reads 50dB 3 Switch FM NR on and adjust R 148 so that S N is improved by 8dB 4 Switch FM NR off and adjust attenuator of FM Generator so that S N ratio reads 60dB 5 Switch FM NR on and confirm that S N is improved by approx 2dB F STERE...

Page 7: ...e C9 L3 L6 L2 Cli L51 LiOl I R403 I 1C102 I UNDER THE L IF B W P C P C201 0 TP1O5 e I R127 TP1O1 TP1O2 L102s R148 LlO2 Rl26 Rl41 TP404 9 ...

Page 8: ...ing on meter 5 Tune to a station of moderate strength near 1400 kHz Enter into Preset 4 Adjust C 153 for maximum reading on meter 6 Repeat above steps 3 and 5 until no further improvement is seen 9 kHz 10 kHz WHISTLE FILTERS 1 Tune to a quiet spot a clear frequency 2 Connect audio oscillator to base Q 1 12 isolate with 0 1 1 0 iiF capacitor 3 Connect AC VTVM or Scope to R 220 and ground 4 Set audi...

Page 9: ... I 4 AM BAR ANTENNA ANTENNA ThRMINAI RECEPTACLE IF B w SELECTOR P C B 000IA POWER TRANSFORMER Jios POWER CORD ROTARY SENSOR P C B NOOA VOLTAGE SELECTOR ZOO4AI POWER INDICATOR P C R M1O8A LED DISPLAY P C B 0013A PRESET SELECTOR P C B SOS5A POWER SWITCH 12 13 ...

Page 10: ... less AC outlet AM BAR ANTENNA ANtENNA TERP ENAL S S IF B w SELECTOR P C B 0001A POWER TRANSFORMER Os ROTARY SENSOR P C B NOO1A VO4TAGE SELECTOR IZOO4A I POWER iNDICATOR PC B M1ORA LED DISPLAY PC B DOISA POWER CORD PRESET SELECTOR P C B S085A POWER SWITCH ...

Page 11: ...MII 1I I tEl I I VOLTAGE SELECTOR P C B ASS Y ZOO4A r 2 Il iiovri _ I 2OV I 220V I 240V I POWER INDICATOR P C B ASS Y M1O8A ROTARY SENSOR P C B ASS Y NOOl A r 2 222o 0T TUNER P C B ASS Y 1024A Q L9 r LED DISPLAY P C B ASS Y DO13A i ___________ o33 iiiitti j w PRESET SELECTOR P C B ASS Y S085A I 0 14 15 ...

Page 12: ...IC DIAGRAM NAD 4300 TUNER MARX OF RESI5100 Eli SEBLE C 1 1 4 W s 12 w MARK OF CAPACITOR ELECT LOW LEAK FILM I ISA L901 11 5101 C I C EISA J4 J 0 ___ SIE55O ____ IDO13A 6 ClAP TABOOPAP Ill I j ___ RT2RT3A 16 17 ...

Page 13: ...T SINK 38 4 82 2130 0 0 RCA CONNECTOR SINGLE ROTARY POTENTIOMETER OUTPUT LEVEL CONTROL FM FRONTEND P C B ASSEMBLY 40 TAPPING SCREW PHILLIPS HEAD 3 x 6 BLK 41 TAPPING SCREW PHILLIPS HEAD 3 x 8 BLK 18 71 3110 0 0 BOTTOM COVER 19 71 1892 0 0 BRACKET OUTPUT LEVEL CONTROL 42 43 44 45 46 47 48 49 50 51 MACHINE SCREW PHILLIPS HEAD 3x6 BLK TAPPING SCREW PHILLIPS HEAD 3 x 6 Cr TAPPING SCREW WASHER HEAD 3 x...

Page 14: ...LU LU 0 J 0 x LU 0 CN 0 ...

Page 15: ...ED3O1 D301 D302 DESCR I PTIONS INTEGRATED CIRCUIT TRANSISTOR 0 C 0 0 0 0 LED INDICATOR LED AMBER VOLTAGE SELECTOR P C B ASSEMBLY ZOO4A EXPLODED VIEW REF NO 35 SYMBOL NO PARTS NO DESCRIPTIONS R902 2 7Mc 1 2W CARBON RESISTOR ROTARY SENSOR P C B ASSEMBLY NOO1A EXPLODED VIEW REF NO 36 SYMBOL NO PARTS NO DESCRIPTIONS P1901 P1902 TLP8O1A PHOTO INTERRUPTER IF BIW SELECTOR P C B ASSEMBLY QOO1A EXPLODED VI...

Page 16: ... MEMORY BACKUP CAPACITOR TRIMMER CAPACITOR 5 2 3OpF 1SV55 ii 437 11 438 11 439 11 440 13 539 12 565 15 i 66 15 172 36 134 82 2i 62 82 2174 DIODE FM ANTENNA COIL FM RF COIL IFT COIL OSC COIL CHOKE COIL iOuH 0 56uH TRIMMER CAPACITOR 3 11 pF ANTENNA CONNECTOR YKV1 1 0065 A Al YKV11 0096 B C R126 R127 R141 Ri 48 R2i0 R288 41 788 41 789 41 787 41 791 68f 1 4W DESCRIPTIONS INTEGRATED CIRCUIT 2SC929 TRAN...

Page 17: ...4 w C oØ OIAi3LN I NVdVC NI Q3LNIUd Cit OWN AS 9ICI ...

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