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PACKING DIAGRAM

Proprietary information for servicing purposes only. The information herein may not be used com-

mercially without the prior written agreement of NAD Electronics International, Toronto, Canada.

 C425 MANUAL

10

7

2

11

5

6

1

2

4

3

8

9

12

13

14

ITEM PART NO.

DESCRIPTION

Q’TY

1

1437-8301+0-2

CARTON BOX C425

1

2

1490-3783+2

POLYFORM ENDCAP 

2

3

1497-1062+0

POLYBAG MANUAL

1

4

1497-1302+0

POLYBAG

1

5

1497-1332+1

POLYBAG

1

6

1497-1432+0

EPE BAG (412)

1

7

4301-7238+0

INSTRUCTION MANUAL 

1

8

2103-7302+1

RCA PLUG (MALE)

1

9

2107-0661+1

300-OHM T ANTENNA

1

10

2107-1131+0

AM LOOP ANTENNA

1

11

2103-6101+0

RF CONNECTION PLUG (F-TYPE)

1

12

1450-2520+0

WHITE PAPER

1

13

4060-0530+0

GREENCELL 3A SIZE GP24G2

2

14

8912-0055+0

REMOTE CONTROL NATNC425

1

Содержание C 425

Страница 1: ...NAD C 425 STEREO AM FM TUNER C 425 STEREO AM FM TUNER SERVICE MANUAL...

Страница 2: ...critical with regard to the risk of fire and electric shock Replace only with parts recommended by the manufacturer CONTENTS DESCRIPTION PAGE SPECIFICATIONS 3 REAR PANEL FRONT PANEL 4 DISASSEMBLY INST...

Страница 3: ...3 dB 13 dB Signal Noise Ratio Mono 72 dB 72 dB 60 dB IHF wtd Stereo 66 dB 66 dB Frequency Response 20 Hz 15 kHz 60 dB 0 1 0 dB 0 1 0 dB Channel Separation 60 dB 30 Hz 33 dB 33 dB 1 kHz 42 dB 42 dB 10...

Страница 4: ...AY 8 PRESET TUNE 9 DISPLAY AREA 10 PRESET TUNE CONTROL FRONT PANEL REAR PANEL IMPORTANT NOTES 1 Show the software version Press BLEND and AM FM 2 Light UP all the icon on the VFD Press BLEND DISPLAY 3...

Страница 5: ...to 4 from the side panels Remove tapping screw 3 0 x 8 5 5 from the back panel Refer to Figure No 1 Figure No 1 2 Pull both sides of the TOP COVER slightly outwards 6 and tilt approx 35 and then remo...

Страница 6: ...ODER U901 AM FM IF LA1837 MUTING IR IN U701 74HC86 M218 REMOTE SENSOR POWER SUPPLY VFD VP 5V CPU 10V AC INPUT L R VT VT ce data clk RDS CLK RDS SIG RDS DATA MPXIN data out 1 Power On 1 2 Standby LC721...

Страница 7: ...7 WIRING DIAGRAM MAIN BOARD KEY BOARD DISPLAY BOARD LED BOARD TRANSFORMER POWER SUPPLY BOARD YELLOW BLUE WHITE...

Страница 8: ...8 ADJUSTMENT POINTS DIAGRAM OSC RF VT...

Страница 9: ...PUT TERMINAL L R ANTENNA TERMINAL ANTENNA TERMINAL ANTENNA TERMINAL AM LOOP ANTENNA Accessory AM LOOP ANTENNA 60cm DIGITAL MILLIVOLT METER VT_J911 FM SIGNAL GENERATOR AM SIGNAL GENERATOR FM SIGNAL GEN...

Страница 10: ...Channel L or R 1kHz 99 0MHz Oscilloscope R941 Maximum separation Repeat stereo distortion and stereo separation alignment until THD at minimum and separation at maximum Distortion Meter Minimum Mute...

Страница 11: ...11 PCB LAYOUT POWER SUPPLY BOARD DISPLAY BOARD LED BOARD KEY BOARD...

Страница 12: ...12 MAIN BOARD...

Страница 13: ...13 SCHEMATIC DIAGRAM KEY MCU DISPLAY NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED 2 CERAMIC CAPACITORS ARE 50V 10 UNLESS OTHERWISE SPECIFIED 1 Tue Jul 18 09 17 14 2006 6 5V...

Страница 14: ...14 TUNER NOTE 1 RESISTORS ARE CARBON FILM 5 1 8W UNLESS OTHERWISE SPECIFIED 2 CERAMIC CAPACITORS ARE 50V 10 UNLESS OTHERWISE SPECIFIED...

Страница 15: ...g Circuit Grid Driver Segment Driver Grid Driver Key Scan Output Control Dispaly Memory Timing Generator Key Matrix Memory SG2 KS2 SG3 KS3 SG4 KS4 SG5 KS5 SG6 KS6 SG7 KS7 SG8 KS8 SG9 KS9 SG10 KS10 SG1...

Страница 16: ...R AND OSCILLATOR TIMER 0 TIMER 1 REAL TIME CLOCK SYSTEM TIMER SPI ADC1 DAC1 ADC0 DAC0 P89LPC935 936 P3 1 0 P2 7 0 P1 7 0 P0 7 0 X2 X1 TXD RXD SCL SDA T0 T1 CMP2 CIN2B CIN2A CMP1 CIN1A CIN1B OCA OCB OC...

Страница 17: ...B 2Y GND VCC 4B 4A 4Y 3B 3A 3Y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 ALC AM OSC AM MIX AM RF AMP REG AGC AM IF AM S METER TUNING DRIVE STEREO DRIVE VCC V CC...

Страница 18: ...TEST 57kHz BPF SCF SMOOTHING FILTER OSC CLK 4 332MHz 9 XIN 8 XOUT RDS ID DETECT RAM 128bits 21 22 16 15 20 23 8 7 17 14 13 12 11 10 9 5 4 3 2 18 19 24 1 6 XIN FMIN AMIN CE DI CL D0 OUT0 OUT1 XOUT PHA...

Страница 19: ...04 1480 C DIODE 1N4148M A WA ATS WAFER CONNECTOR J202A 2101 1441 0 FLEXIBLE CONN 15P P1 0 R J203A 2102 031R 004 WAFER 3P P2 5 RIGHT TRANSISTOR Q201 Q202 485C 114E K TR DTC114ES RLT RESISTOR R210 R211...

Страница 20: ...Y KEY C425 PCB 1725 859A 0000 PCB MAIN KEY DIS PSU LED CAPACITOR C230 C231 150F 103K 2 FC CC 50V 0 01uF 10 AT 3 5 WAFER J201B 2102 031R 004 WAFER 3P P2 5 RIGHT MISCELLANEOUS VR201 5200 4951 0 ENCODER...

Страница 21: ...CE 16V 100UF 20 RLT C413 157E 227M K OVI CE 25V 220UF 20 RLT C414 157D 107M K IUI CE 16V 100UF 20 RLT C415 C416 C417 C418 157F 107M K OVI CE 50V 100U 20 RLT C419 157B 107M K LII CE 6 3V 100UF 20 RLT C...

Страница 22: ...2700PF 5 RLT 7X7 C961 C962 EU 153F 152J K JM CM 50V 1500P 5 RLT C963 C964 157D 226M K IUI CE 16V 22UF 20 RLT 5X11 C965 153F 272J K MMN CM 50V 2700PF 5 RLT 7X7 C967 157F 474M K IUI CE 50V 0 47UF 20 RL...

Страница 23: ...B21 2 DZ 1 2W M5 96 6 27V ROHM WAFER CONNECTOR 0205 CA 2107 0641 0 ANT TERMINAL F TYPE 0205 EU 2107 0681 0 ANT TERMINAL DIN TYPE J202B 2101 1536 0 FFC CONNECTOR 15P P1 0 J401B 2102 081S 004 WAFER 8P P...

Страница 24: ...4E K TR DTA114ESA RLT ROHM Q982 4853 63BL 5 TR N JEET 2SK 363BL F Q983 Q984 485C 114E K TR DTC114ES RLT RESISTOR R201 R205 4701 472J 2 RCF 1 8W 4 7K 5 AT R207 4701 223J 2 RCF 1 8W 22K 5 AT R208 R209 4...

Страница 25: ...01 820J 2 RCF 1 8W 82R 5 AT R927 4701 103J 2 RCF 1 8W 10K 5 AT R928 4701 221J 2 RCF 1 8W 220R 5 AT R929 4701 222J 2 RCF 1 8W 2 2K 5 AT R931 4701 220J 2 RCF 1 8W 22R 5 AT R933 4701 223J 2 RCF 1 8W 22K...

Страница 26: ...F 1 8W 47K 5 AT R992 4701 682J 2 RCF 1 8W 6 8K 5 AT R993 R997 4701 104J 2 RCF 1 8W 100K 5 AT R999 4701 512J 2 RCF 1 8W 5 1K 5 AT IC U201 3132 3561 0 IC MCU 16K FLASH P89 U203 3131 7250 0 IC AT24C08A 1...

Страница 27: ...3151 0 01 POWER SWITCH MISCELLANEOUS GND CA 4132 1061 0 SOLDER TAG M801 M803 M804 M805 M806 4132 1071 0 TERMINAL PIN NOTE The components identified by mark are critical for risk of fire and electrica...

Страница 28: ...28 EXPLODED VIEW 0106 0102 0115 0108 0119 0126 0130 0133 0113 0123 0111 0132 0131 0118 0114 0129 0136 0100 0124 0121 0112 0101 0119 0109 0116 0110 J202 0141 0122 0137 0140 0107 0125 0127 0117 0105...

Страница 29: ...2842 3367 0 METAL WASHER 0112 TITA 2900 4006 2010 SCM PW M4X6 RECESS WHITE 0112 GREY 2900 4006 3010 M4X0 5PX6MM W FLAT 0113 2900 4010 3030 PH W WASHER M4X10 BL ZN 0114 2904 3006 0000 SCREW M3X6 0115 2...

Страница 30: ...y with part number specified CA Canadian model only EU European model only 0136 EU 7009 3110 0 AC CORD SEMKO 0137 3714 5706 0 LED LENS 412 CLEAR SAN 0140 0141 2954 3008 0000 SCREW B TITE BIND M3X8 014...

Страница 31: ...RIPTION Q TY 1 1437 8301 0 2 CARTON BOX C425 1 2 1490 3783 2 POLYFORM ENDCAP 2 3 1497 1062 0 POLYBAG MANUAL 1 4 1497 1302 0 POLYBAG 1 5 1497 1332 1 POLYBAG 1 6 1497 1432 0 EPE BAG 412 1 7 4301 7238 0...

Страница 32: ...SERVICE MANUAL NAD 2006 C 425 STEREO AM FM TUNER NAD ELECTRONICS INTERNATIONAL TORONTO...

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