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NAD CI980, Service Manual, Page: 9 / 35

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NAD CI980 Service Manual Download Page 9

1.MAIN  AMP  BOARD 

11

R905

620

+5VA

C909

10uF/10V

VAA

7

COMP2

2

VSS

6

IN+2

4

GND

5

IN-2

3

CLIP

1

IN+1

8

IN-1

9

COMP1

10

CSD

11

FAULT

12

N

C

13

VCC

14

CO

M

15

CS

H

1

16

VB1

17

VS

1

18

VP

1

19

VS1

20

VN1

21

VN2

22

VS2

23

VP

2

24

VS

2

25

VB2

26

CS

H

2

27

CO

M

28

N

C

29

N

C

30

IC901

IR4302

-5VS

C910

10uF/10V

C905

2.2nF/50V

C903

2.2nF/50V

C906

2.2nF/50V

C904

2.2nF/50V

R903

2.7K/1%

R906

620

R904

2.7K/1%

C907

1nF/50V

C908

1nF/50V

R907

10

R908

10

1

2

3

4

5

6

7

8

9

10

11 12

13 14

15 16

17 18

19 20

21 22

23 24

25 26

27 28

29 30

31 32

33 34

35 36

CJ101A

JS1107-36

+32V

-32V

CSD

FAULT

FAULT1

C901

10uF

L IN

C902

10uF

R IN

+5VA

-5VS

VCC

D902

1N4148

D905

1N4148

D906

1N4148

R910

100

R920

33K

C911

10uF/16V

CSD1

C916

100nF/100V

R918

4.7R

R922

4.7R

C922

10uF/16V

-32V

1

2

3

4

SP90

1

OQ

045401000

AG

/90

D

-5

.08

-4

P

+32V

-32V

-32V

+32V

C920

100nF/250V

C918

100nF/100V

R924

1R

C919

100nF/250V

C917

100nF/100V

R923

1R

D903

1N4148

D904

1N4148

R919

33K

C915

100nF/100V

R917

4.7R

-32V

C921

4.7uF/25V

L901

22uH@10A

C926

470nF/250V

L902

22uH@10A

C925

470nF/250V

C928

100nF/63V

C927

100nF/63V

R925

10/1W

R926

10/1W

R927

2.2K/1W

R928

2.2K/1W

VCC

C914

150pF/500V

R914

47.5K/1%

R916

1K/1%

C913

150pF/500V

R913

47.5K/1%

R915

1K/1%

R901

3.3K/1%

R902

3.3K/1%

C933

100nF/100V

C935

220uF/50V

C934

100nF/100V

C936

220uF/50V

R929

4.75K/1W

R930

4.75K/1W

R OUT

L OUT

R IN

L IN

R931

22R

C938

100nF/50V

D907

1N4148

D915

MURS120

D918

MURS120

D917

MURS120

D916

MURS120

+32V

+32V

-32V

-32V

C931

10nF/200V

C932

10nF/200V

C939

100nF/50V

R934

47K

R936

1K

R937

10K

R938

10K

R939

33K

C941

100uF/25V

Q901

MMBT5551

Q902

MMBT5401

+5VA

Q904

MMBT5401

R942

47K

R944

47K

R941

47K

L OUT

Q903

MMBT5551

R945

47K

-32V

CS

D

1

R943

10K

R935

47K

R OUT

CS

D

1

D919

1N4148

R946

100K

+5VA

CSD

R932

22R

4

3

8

7

5

6

1

2

L903

INDUCTOR COMMON-B

C951

2.2nF/100V

C953

2.2nF/100V

C952

2.2nF/100V

C954

2.2nF/100V

C955

2.2nF/100V

C961

NC

C956

2.2nF/100V

C962

NC

C943

4.7uF/25V

C957

NC

C959

2.2nF/100V

C960

2.2nF/100V

C958

NC

C972

47pF/100V

C971

47pF/100V

R952

18R

R951

18R

C945

100nF/50V

CIRCUIT DIAGRAMS

Summary of Contents for CI980

Page 1: ...NAD SERVICE MANUAL CI 980 MULTI CHANNEL AMPLIFIER CI 980 MULTI CHANNEL AMPLIFIER...

Page 2: ...ON P A G E SERVICE CAUTION 3 4 SPECIFICATIONS 5 WIRING DIAGRAM 6 PCB LAYOUT 20 24 EXPLODED VIEW PARTS LIST 36 CIRCUIT DIAGRAMS TROUBLE SHOOTING GUIDE 10 EXPLODED VIEW 35 11 19 ELECTRICAL VIEW PARTS LI...

Page 3: ...ACITOR BETWEEN A KNOWN GOOD EARTH GROUND WATER PIPE CONDUIT ETC AND THE EXPOSED METALLIC PARTS ONE AT A TIME MEASURE THE AC VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND 15 MFD CAPACITOR REV...

Page 4: ...s including Metal panels Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components co...

Page 5: ...0 ref 8 ohms 50Hz and 1kHz Input Sensitivity 1 1V ref rated power Voltage Gain 33dB Frequency Response 20Hz 20kHz 1dB Signal Noise Ratio A Weighted 80dB ref 1W 8 ohms 100dB ref 50W Trigger 5 30V In AC...

Page 6: ...6 WIRE DIAGRAM...

Page 7: ...AM GLOBAL IN PUT LINE IN PUT CHANNAL AMPLIFER 1 2 3 GATA DRIVER MAIN FILTER AC INNET LOW LOSS STANDBY PSU EMI FILTER Power Factor Correction 400V DC High dynamic Isolated DC convertor AMPLIFER PSU FOL...

Page 8: ...S LED WHITE CHECK TRIGGER OFF CHECK TRIGGER AUOT CHECK TRIGGER ON CHECK CONNECTER YES CHECK STB 5V CHECK TRIGGER CIRCUIT CHECK SIGNAL DETECTION CIRCUIT YES YES YES YES NO NO NO NO NO CHECK POWER FUS C...

Page 9: ...8 R919 33K C915 100nF 100V R917 4 7R 32V C921 4 7uF 25V L901 22uH 10A C926 470nF 250V L902 22uH 10A C925 470nF 250V C928 100nF 63V C927 100nF 63V R925 10 1W R926 10 1W R927 2 2K 1W R928 2 2K 1W VCC C9...

Page 10: ...5 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 CJ501B 18PIN X2 54 32V 32V CSD FAU5 5VA 5VS VCC CH5L IN CH5RIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27...

Page 11: ...1B 50KB R314 1K R316 100K 3 2 1 8 4 IC302A MC4558D C310 100nF 12V 12V C312 100nF ALL IN ALR IN 5 6 7 IC303B MC4558D 3 2 1 8 4 IC303A MC4558D R321 10K R327 18K R319 10K C315 33pF C313 10uF R322 10K R32...

Page 12: ...165 100 RB164 100 RB175 100 CB104 100nF M OSI A D C5 P1 5 1 M SIO A D C6 P1 6 2 SCL K A D C7 P1 7 3 P4 7 RST 4 INT RxD P3 0 5 SCL K TxD 2 CCPI P4 3 6 TxD P3 1 7 INT0 P3 2 8 INT1 P3 3 9 CL K OU T0 IN T...

Page 13: ...1N4148 CS926 470nF CS923 22pF CS925 100nF QS921 2SC1815 DS923 1N4148 5VD RS926 22 CS924 10uF RS924 10K RS928 100K 5 6 7 US921B MCP6002T E SN 2 5V RS925 4 7M SJC9 S901 SJC9 CS9 100uF 25V RS305 100K DS3...

Page 14: ...58D 5 6 7 IC2B MC4558D C2 10uF C4 470pF C6 33pF C8 100nF 12V 12V C10 100nF GL OBA L IN GL OBA L OUT GL OBA L OUT ALROUT ALL OUT C11 470pF C12 470pF 4 3 RCA1A BNCAV2 8 4 14 2 1 RCA1B BNCAV2 8 4 14 4 3...

Page 15: ...RT14 3 3K L ED 1G L ED 1R L ED 3R L ED 3G RT6 3 3K RT8 10K RT5 10K RT7 510 QT6 2SA1015 QT3 2SA1015 QT5 2SA1015 QT4 2SA1015 RT11 510 RT9 10K RT12 10K RT10 3 3K L ED 2G L ED 2R 1 2 3 4 5 6 7 8 9 CJ105B...

Page 16: ...2 5A 6A 5 6 4 1 2 3 S102 SW A C 1 2 3 4 5 6 CN102B X HB 2 5A 5A CN101B CN801B CN102B CN802B RT92 1K RT94 10K RT91 10K RT93 510 QT91 2SA1015 QT92 2SA1015 L E D 9B L E D 9R 1 2 3 4 5 CJ109A XHB 2 5A 4A...

Page 17: ...P C950 100UF 35V D920 MURS120 VCC1 GNDP T902 BAW56W Q911 BC807 25 R930 10R R945 1K T903 BAW56W Q914 AOT412 Q907 BC807 25 R931 10R R939 1K T904 BAW56W Q916 AOT412 Q909 BC807 25 R933 10R R941 1K T906 BA...

Page 18: ...1 MAIN AMP BOARD PCB LAYOUT Top Layout Bottom Layout...

Page 19: ...2 PRE AMP BOARD Top Layout Bottom Layout...

Page 20: ...3 GLOBAL IN BOARD Top Layout Bottom Layout...

Page 21: ...4 LED BOARD Top Layout Bottom Layout 5 POWER LED BOARD 6 SWITCH BOARD Top Layout Top Layout Bottom Layout Bottom Layout...

Page 22: ...24 7 PSU BOARD Top Layout Bottom Layout...

Page 23: ...1 4W 1 K 5 7 4 r o t s i s e R p i h C 2 0 2 5 7 4 9 7 0 4 1 9 R 3 1 9 R 1206 1 4W 1 RC1206FR 0747K5L K 5 7 4 r o t s i s e R p i h C 6 0 1 5 7 4 9 7 0 0 3 9 R 9 2 9 R 2512 1W 1 0 1 r o t s i s e R p...

Page 24: ...B VM2 1 FR 4 1 6mm 2Layers 2Oz TG130 TG130 374 132mm DIODES DS301 DS302 DS303 DS304 DS321 DS322 DS323 DS401 DS402 DS403 DS404 DS421 DS422 DS423 DS501 DS502 DS503 DS504 DS521 DS522 DS523 DS601 DS602 DS...

Page 25: ...10W 1 RC0603FR 0710KL R327 R328 R427 R428 R527 R528 R627 R628 M07 97871 00 Chip Resistor 7 87K 0603 1 10W 1 RS9 RS10 RB19 07 92202 00 Chip Resistor 22K 0603 1 10W 1 RC0603FR 0722KL R305 R306 R405 R40...

Page 26: ...0nK 100V 1206 X7R CB11 26 10611 22 Ceramic Chip Capacitor 10uK 16V 1206 X7R C3216X7R1C106K C301 C302 C313 C314 C401 C402 C413 C414 C501 C502 C513 C514 C601 C602 C613 C614 06 10051 01 ALU Electrolytic...

Page 27: ...C13 C14 26 22151 00 Ceramic Chip Capacitor 220PJ 50V 0603 NPO C5 C6 26 33051 00 Ceramic Chip Capacitor 33pJ 50V 0603 NPO C1608C0G1H 330JT C3 C4 C11 C12 26 47151 00 Ceramic Chip Capacitor 470pJ 50V 06...

Page 28: ...1C105K CT2 CT32 26 22521 21 Ceramic Capacitor SMD 2 2uF 10 25V X7R 0805 GRM21BR71E225KA CT31 26 10621 12 Ceramic Capacitor SMD 10uF 25V X5R 1206 C3216X5R1E106KT CT35 06 22121 03 ALU Electrolytic Capac...

Page 29: ...T139X 600E 127 D921 33 25822 00 Schottky Rectifier Diode 1N5822 D918 33 24006 00 Rectifier Diode UF4006 D912 33 26200 00 Transient Suppressor P6KE 200A TRANSISTORS Q902 Q903 Q906 Q907 Q908 Q909 Q910 Q...

Page 30: ...901 or A07 70471 00 TVS BK471KD14 R927 07 30104 06 Metal Oxide film Resistor RY21 100K 2W 5 CAPACITORS C926 26 47151 00 Ceramic Chip Capacitor 470pJ 50V 0603 NPO C924 C927 26 10251 00 Ceramic Chip Cap...

Page 31: ...3mm S901 70 420004 0 Heat sinkB AL6063 T 3mm FASTENERS Used for S901 S903 62 010302 0 Nut GB6170 M3 Zinc Blue Used for Q912 Q913 66 162004 0 S2 Clamp 3 Stainless Steel Used for U905 U907 U912 U913 61...

Page 32: ...SWITCH PCB 3 LEDPCB 3 PCB Rear Panel 8 61 023506 0 Machine Screw MB3 6 Zinc Black LEDPCB 1 61 023516 0 Machine Screw MB3 16 Zinc Black 62 010302 1 Nut M3 Zinc Blue Fixed Top Cover 61 084208 0 Self Tap...

Page 33: ...ASSY EXPLODED VIEW 35 23 17 22 26 27 28 29 30 1 2 3 4 6 5 7 8 9 10 11 12 14 13 15 16 25 19 21 24 18 20 31 32...

Page 34: ...0 power button brezel 1 13 01 29805 01 Power LED Assy 1 14 67 420005 1 mesh 2 15 76 008001 0 LED LENS 4 16 79 420001 0 indicator lights EVA 1 17 01 29804 01 LED Assy 1 18 70 420005 0C front panel 1 1...

Page 35: ...SERVICE MANUAL CI 9 0 MULTI CHANNEL AMPLIFIER NAD ELECTRONICS LTD TORONTO...

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