Nad C-442 Service Manual

NAD

C 422

STEREO

AM/FM TUNER

C 422

STEREO

AM/FM TUNER

SERVICE MANUAL

- 2 -

SERVICE SAFETY PRECAUTIONS

1. Safety check out

(Only U.S.A. model)
Before returning the product to the customer, make leakage current or resistance measurements
to determine that exposed parts are acceptably insulated from the supply circuit.

Parts marked with the symbol are 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 INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

ADJUSTMENT POINTS DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

INSTRUMENT SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ALIGNMENT PROCEDURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12

SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-14

IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-17

ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-23

EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-26

PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

- 3 -

SPECIFICATIONS

AM TUNER SECTION

Input level is expressed as the reading in open-circuit
of 75-ohm source impedance signal generator

Usable Sensitivity (999/1000kHz) ≤30dBµ
S/N Ratio (5mV in) ≥38dB
THD (5mV in) ≤3%
IF Rejection (450kHz) ≥36dB
Image Rejection (F+2xIF) ≥28dB
Selectivity ≥17dB
Output 130 +/-20mV
Loop Sensitivity (20dB S/N)

999/1000 kHz ≤66 dB
603/600 kHz ≤66 dB
1404/1400 kHz ≤66 dB

Frequency response (100 - 2.3 kHz, 5mV) ±6 dB

FM TUNER SECTION

*C *AH

Input level is expressed as the reading in open-circuit
of 75-ohm source impedance signal generator
Usable Sensitivity (98 MHz) ≤13 dBµ ≤13 dBµ
Signal / Noise Ratio Mono ≥72 dB ≥72 dB

(60 dBµ, IHF wtd) Stereo ≥66 dB ≥66 dB
Frequency Response (20 Hz - 15 kHz, 60 dBµ) 0±1.0 dB 0±1.0 dB
Channel Separation (60 dBµ) 30 Hz ≥33 dB ≥33 dB

1 kHz ≥42 dB ≥42 dB
10 kHz ≥32 dB ≥32 dB

Alternate Channel Sensitivity

(40 dBµ, ±400 kHz) ≥60 dB ≥45 dB
Capture Ratio (40 dBµ) ≤3 dB ≤3 dB
AM Suppression

(60 dBµ, 100% Mod.FM, 30% Mod AM) ≥65 dB ≥65 dB
Image Rejection (119.4 MHz) ≥85 dB ≥85 dB
I.F. Rejection (10.7 MHz) ≥78 dB ≥78 dB
Pilot Suppression (60 dBµ) ≥60 dB ≥60 dB
THD (60 dBµ, L=R 75 kHz for AH, 40 kHz Dev for C)

Mono ≤0.25% ≤0.25%
Stereo ≤0.35% ≤0.35%

Auto-Search sensitivity On ≥24 dBµ ≥24 dBµ

Off ≤15 dBµ ≤15 dBµ

RDS Decode Sensitivity ≤26 dBµ ≤26 dBµ

PHYSICAL

SPECIFICATIONS

Dimensions (Width x Height x Depth) 435 x 80 x 285 mm
Net weight 4 kg (8.8 lbs)
Shipping weight 5.1 kg (11.22 lbs)

- 4 -

REAR PANEL / FRONT PANEL

REAR PANEL

FRONT PANEL

1. FM ANTENNA

2. AM ANTENNA

3. OUTPUT

4. IR IN

5. 12V TRIGGER IN

6. AC LINE CORD

1. POWER ON / OFF

2. POWER STATUS INDICATOR

3. BLEND

4. MEMORY

5. FM MUTE / MODE

6. AM / FM

7. DISPLAY

8. PRESET / TUNE

9. DISPLAY AREA

10. PRESET / TUNE CONTROL

34

PRESET

PROGRAM

FM MUTE

BLEND

TUNED

FM ST

RDS

ANTENNA

IMPORTANT NOTES

1. Show the software version

Press “PRESET/TUNE” and “TUNE UP” ( ).

2. Light UP all the icon on the VFL

Press “PRESET/TUNE” and “TUNE DOWN” ( ).

3. CPU Resets

Press “PRESET/TUNE” and “TUNE DOWN” ( ) and any one key.

4. AM Step 10K/9K Change

Add D206: 10KHz / Delete D206: 9KHz.

ANTENNA

GND

FM

' 2003 NAD C 422

© 2003 NAD C 422

AM

RDS Stereo Tuner C 422

BLEND

OUTPUT

L

R

FM MUTE

/ MODE

MEMORY AM / FM DISPLAY

DELETE

PRESET
/ TUNE

IR
IN

+12V TRIGGER

IN

5

PROGRAM

FM MUTE

BLEND

TUNED

FM ST

PRESET

ANTENNA

RDS

6

PRESET / TUNE

2

1

34567

8

9

10

- 5 -

DISASSEMBLY INSTRUCTIONS

1. Remove machine screws M 4.0 x 6.0 ( 1 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 remove

in the direction as indicated by the arrow 7 . Refer to Figure No.2.

Figure No.2.

4

3

5

2

1

6

7

6

- 6 -

B L O C K DIA G R AM

L

R

MUT ING

17

16

23

AC INP U T

DIODE

MAT R IX

12V T R IG G E R

IN

IR IN

2

MP XIN

P O WE R

S UP PLY

-V P

VF D

+10V

+5V C P U

U9 01

LA1837

AM/FM IF

30

1

27

F R ONT E ND

VT

E NV 172D3G 1

T UNE

U9 02

16 14

LC 72723M

M218

R E MOT E

R DS DE C O DE R

23

19

58

S T/MO , MU TE , S ME TE R

data

AM

OS C /IF

F M

OS C /IF

19 18

VT

21

out

LC 7218

U9 03

ce data clk R DS -C LK R DS -S IG R DS -DATA

P L L

2345 15

75 76 74

79

LC 866448B

16

14

U2 01

C P U

22

78

22- 12V TR IG GE R IN

6 -IR IN

(#1 )=Po wer On

(#1 )

71

24

(#2 )=Pr otec t ( Flas h 2H z)

(#1 )+(#2 )=S tandby

(#2 )

72

S E N S OR

VF D

5

U2 02

24C 08

AM LO OP ANT F M A NT OUT P UT

K E Y MAT R IX

Trigger IN

E E P R OM

WIR ING DIA G R AM

K E Y B O AR D

LE D B O AR D

MAIN B O AR D

TR AN S F O R ME R

WH ITE
B LUE
Y EL LO W

P O WE R S UP P LY B O AR D

- 7 -

- 8 -

ADJUSTMENT POINTS DIAGRAM

VT

OSC RF

- 9 -

FM

SIGNAL

GENERATOR

ANTENNA

TERMINAL

OUTPUT

TERMINAL

DISTORTION

METER

DISTORTION

METER

AC

VOLTMETER

OSCILLOSCOPE

AC

VOLTMETER

OR

OSCILLOSCOPE

AC

VOLTMETER

OR

OSCILLOSCOPE

OUTPUT

TERMINAL

OUTPUT

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

GENERATOR

RDS

GENERATOR

FM

STEREO

GENERATOR

P901

OUTPUT

TERMINAL

DC

MILLIVOLT-

METER

UNIT

UNIT

UNIT

UNIT

INSTRUMENT SETUP

1. FM MEASUREMENT

Fig. 1

Fig. 2

2. RDS MEASUREMENT

Fig. 3

3. AM MEASUREMENT

Fig. 4

- 10 -

ALIGNMENT PROCEDURES

FM/RDS SECTION

- FM mono: 1kHz, 75kHz devi., 60dB/µV

- FM stereo: 1kHz, 67.5kHz devi., 60dB/µV
Pilot signal 19kHz 7.5kHz devi.

OUTPUTS

- Connect the 47Kohm resistor unless otherwise noted.

Item

FM

IF/RF

Stereo

Distortion

Stereo

Separation

Mute

Level

Signal
output

Step

1

DC voltmeter L941

0±70mV

3

Distortion

analyzer

Distortion

analyzer

Oscilloscope

Oscilloscope

L942

R941

R956

Minimum

Minimum

2 AC voltmeter

IFT on the

front end

IFT on the

front end

Maximum

Maximum

separation

Distortion

Meter

Minimum

Connection

of instrument

Fig.1 –

–

Fig.2

Fig.2

Fig.1

Channel L

or R 1kHz

99.0MHz
1kHz 75kHz devi.
65dBf (60dB)

99.0MHz Ext.
mod. 65dBf
(60dB)

FM SG

output

Stereo mod­ulator output

Tuning

frequency

99.0MHz

99.0MHz

Channel L

or R 1kHz

99.0MHz Ext.
mod. 65dBf
(60dB)

99.0MHz Ext.
mod. 65dBf
(60dB)
RDS 2% MOD

99.0MHz 18dB

99.0MHz

99.0MHz

RDS ––––Fig.3 99.0MHz

Output

indicator

Adjustment

point

Adjust

for

Remarks

FM MUTE/MODE
switch: ON/AUTO
Repeat the steps
1 to 3 until no fur­ther adjustment is
necessary.

FM MUTE/MODE
switch: ON/AUTO
Don’t turn more
than ±180˚

Repeat stereo
distortion and
stereo separation
alignment until
THD at minimum
and separation at
maximum.

Decode
the RDS­Program station

AM SECTION

AF Modulation: 400Hz, 30%
For AH Version

Step

1–

2

3

530kHz

600kHz

990kHz

600kHz
400Hz 30% mod.
60dB/m

AM SG

output

Tuning

frequency

Output

indicator

Adjustment

point

600kHz
400Hz 30% mod.
60dB/m

AC

voltmeter

AC

voltmeter

Digital

DC

voltmeter

L972

OSC coil

on RF

block M971

RF coil

on RF

block M971

Adjust

for

1.35±0.2V

Maximum

Maximum

Step

1–

2

3

522kHz

or

531kHz

603kHz

999kHz

600kHz
400Hz 30% mod.
60dB/m

AM SG

output

Tuning

frequency

Output

indicator

Adjustment

point

600kHz
400Hz 30% mod.
60dB/m

AC

voltmeter

AC

voltmeter

Digital

DC

voltmeter

L972

OSC coil

on RF

block M971

RF coil

on RF

block M971

Adjust

for

1.3±0.2V (522kHz)

1.35±0.2V (531kHz)

Maximum

Maximum

For C Version

- 11 -

P C B L AY O UT

P OWE R S UP P LY B OAR D

K E Y B OA R D

L E D B OA R D

MAIN BOARD

- 12 -

SCHEMATIC DIAGRAM

KEYBOARD / DISPLAY

MODE

FM/AM

FM MUTE

STORE

BLEND

NOTE: 1. RESISTORS ARE CARBON FILM 5% 1/8W

UNLESS OTHERWISE SPECIFIED.

2. CERAMIC CAPACITORS ARE 50V 10%
UNLESS OTHERWISE SPECIFIED.

DISPLAY

PRESET/TUNE <

PRESET/TUNE >

- 13 -

- 14 -

TUNER

LEFT OUT

RIGHT OUT

M987

NOTE: 1. RESISTORS ARE CARBON FILM 5% 1/8W

UNLESS OTHERWISE SPECIFIED.

2. CERAMIC CAPACITORS ARE 50V 10%
UNLESS OTHERWISE SPECIFIED.

- 15 -

IC BLOCK DIAGRAM

U201: LC866448B

U202: 24C08

U402: NJM78M56FA

S37/PE5

P00
P01
P02
P03
P04
P05
P06
P07

VSS2

P10/SO0

P11/SI0/SB0

P12/SCK0

P13/SO1

P14/SI1/SB1

P15/SCK1

P16/BUZ

40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25

S15/T15
S14/T14
S13/T13
S12/T12
S11/T11
S10/T10
S9/T9
S8/T8
S7/T7
S6/T6
S5/T5
S4/T4
S3/T4
S2/T2
S1/T1
S0/T1

65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80

S36/PE4

S35/PE3

S34/PE2

S33/PE1

S32/PE0

S31/PD7

S30/PD6

S29/PD5

S28/PD4

S27/PD3

S26/PD2

S25/PD1

S24/PD0

S23/PC7

S22/PC6

S21/PC5

S20/PC4

S19/PC3

S18/PC2

S17/PC1

S16/PC0VPVDD2

1234 567891011121314151617181920212223

24

P17/PWM0

P30

P31

P32

P33

P70/INT0

RES

XT1/P74

XT2/P75

VSS1

CF1

CF2

VDD1

P80/AN0

P81/AN1

P82/AN2

P83/AN3

P84/AN4

P85/AN5

P86/AN6

P87/AN7

P71/INT1

P72/INT2/T0IN

P73/INT3/T0IN

6463626160595857565554535251504948474645444342

41

VCC

8

7

4

6

5

3

2
1

GND

WP

SCL

LOAD

LOAD INC

DATA WORD

ADDR/COUNTER

Y DEC

X DEC

R/W

COMP

SERIAL

CONTROL

LOGIC

EN

H.V. PUMP/TIMING

DATA RECOVERY

EEPROM

SERIAL MUX

D

OUT

/ACK

LOGIC

DEVICE

ADDRESS

COMPARATOR

START

STOP

LOGIC

SDA

A

2

A

1

A

0

D

IN

D

OUT

1

INPUT

2

GND

OUTPUT

3

- 16 -

U901: LA1837

U701: LM393D

µ

3.5

A 100µA 3. 5µA 100µA

P3&P5

Non-inve rting

Input

V

Inverting

CC

Input

P2&P6

P8

V

CC

P1&P7

V

V

CC

O

V

CC

GND P4

Dual-In-Line/SOICPackage

FM SD

ADJ

OSC

REG

AM RF

INPUT

AFC

AM AGC

AM DETECTOR

INPUT

FM DETECTOR

OUTPUT

MPX

IUTPUT

MPX

OUTPUT

MPX

OUTPUT

AM STEREO L

INPUT

AM STEREO R

INPUT

30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

P-DET

Ø

304kHz

3 rd 5 th

DECODER

ANTI-BIRIDE

STEREO

VCO

SW

FF

38k

FF

19k

MUTE

FF

19k

ALC

BUFF

FM

S-METER

AM IF

AM

OSC

SD

COMP

S-CURVE

FM

DET

REG

AM

MIXAMRF.AMP

AM IF

AM

S-METER

AM/FM

IF-BUFF

AGC

DET

GND

TUNING

DRIVE

STEREO

DRIVE

V

CC

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

CC

V

ST LED

AM-IF OUTPUT

FM DETECTOR

OUTPUT

FM S-METER

AM NARROW CF

MUTE

OUTPUT

AM S-METER

AM MIXER

FM IF INPUT

OUTPUT

FM IF INPUT

BYPASS

GND

TU-LED

AM IF INPUT

L-OUT

PILOT

FM/AM

SWITCH

R-OUT

DET

CO

PILOT V

- 17 -

21

22

16

15

20

23

871714131211109

5

4

3

2

18

19

24

1

6

XIN

FMIN

AMIN

CE

DI

CL

D0

OUT0 OUT1

XOUT

PHASE DETECTOR

CHARGE PUMP

REFERENCE

DIVIDER

SWALLOW COUNTER

1/16, 1/17 4 BIT

SHIFT REGISTER

LATCH

UNIVERSAL

COUNTER

1
2

12-BIT PROGRAMMABLE

DIVIDER

SYC

OUT2 OUT3 OUT4 OUT5 OUT6 IN0 IN1

V

SS

V

DD

LCTR

HCTR

PD2

PD1

U902: LC72723M

U903: LC7218

Vdda

Vssa

MPXIN

TEST

3

4

2

7

REFERENCE

VOLTAGE

ANTIALIASING

FILTER

TEST

V
1

REF

57kHz

BPF

(SCF)

FLOUT5CIN

6

V

REF

SMOOTHING

FILTER

CLK(4.332MHz)

OSC

9

X

IN

8
X

+

_

OUT

PLL

(57kHz)

CLOCK

RECOVERY

(1187.5Hz)

DATA

DECODER

RAM

(128bits)

RDS-ID

DETECT

Vddd
11

Vssd
10

RDDA
14

RDCL
15

MODE
12

RST
13

RDS-ID/READY
16

- 18 -

ELECTRICAL PARTS LIST

KEY ASSY

PC BOARD

PCB-N0A50C-KEY PCB ASSY KEY N0A50C

CAPACITOR

C201 157B-107M-5-KMK CE 6.3V 100µF 20% RL
C202 153F-103J-5-KM CM 50V 0.01µF 5% RL

COIL

L201 1801-220K-M COIL 22µH 10% AL BL7

WAFER/CONNECTOR

J202A 2101-1581-0 FLEXIBLE CONN. 35P
J204B 2102-021R-004 WAFER 2P P2.5 RIGHT

RESISTOR

R201 4701-681J-2 RCF 1/8W 680R 5% AT
R203,R204,R294 4701-122J-2 RCF 1/8W 1.2K 5% AT
R207 4701-182J-2 RCF 1/8W 1.8K 5% AT
R210 4701-222J-2 RCF 1/8W 2.2K 5% AT
R213 4701-472J-2 RCF 1/8W 4.7K 5% AT
R220,R221 4701-471J-2 RCF 1/8W 470R 5% AT
R222 4701-473J-2 RCF 1/8W 47K 5% AT
R233-R240,R247,R248,R291-R293 4701-103J-2 RCF 1/8W 10K 5% AT
R241-R246,R263-R272 4701-104J-2 RCF 1/8W 100K 5% AT

DIODE

D201 4804-1480-C DIODE 1N4148 ATS
D203 4837-5B61-2 DZ 1/2W 5.45-5.73 ROHM

SWITCH

M201,M204,M207,M210,M213,M216 5200-3538-0 SWITCH, TACT SKHHBY 7MM
M203,M206 5200-4721-0 TACT SWITCH (RIGHT

WIRE

J203A 7705-1150-2004 5P CONN WIRE ASSY L=150
J204A 7702-1075-2004 CONN.ASSY 2P P2.5 L=75

PC BOARD

0300 1725-080B-0100 PCB MAIN/KEY/VFD N0A50C

MISCELLANEOUS

0302 4154-2101-0 VFD HOLDER
0303 2460-1960-0 VFD, SAMSUNG,HNA-10SM12

Reference No. Part No. Description

M218 4814-3TE2-3 IR SENSOR PIC-12043TE2

LED ASSY

PC BOARD

PCB-N0A50C-LED PCB ASSY LED N0A50C

LED

D211 3700-3517-RG LED RED/GREEN (L-469HGW)

WIRE

J201B 7703-1320-2004 3P CONN WIRE ASSY L=320

PC BOARD

1725-080B-0100 PCB MAIN/KEY/VFD N0A50C

PSU

ASSY

PC BOARD

*AH PCB-N0A50C-PSU PCB ASSY PSU N0A50C
*CE PCB-N0A51C-PSU PCB ASSY PSU N0A51C

CAPACITOR

C801 8910-0049-0 CAP400V 4700P

RESISTOR

R801 *AH 4717-335J-2-S RMF 1/2W 3.3M 5% AT UL

SWITCH

0401 5200-3151-0-01 POWER SWITCH

PC BOARD

0400 1725-080B-0100 PCB MAIN/KEY/VFD N0A50C

MISCELLANEOUS

M801,M803-M806 4132-1071-0 TERMINAL PIN

TUN

ASSY

PC BOARD

*AH PCB-N0A50C-TUN PCB ASSY TUN N0A50C
*CE PCB-N0A51C-TUN PCB ASSY TUN N0A51C

CAPACITOR

C203 157B-107M-5-KMK CE 6.3V 100µF 20% RL 6x7
C204,C210 153F-103J-5-IM CM 50V 0.01µF 5% RL 5X7
C205 150F-104Z-5-IU CC 50V 0.1µF +80/-20% RL 5x11
C208 157D-476M-5-IUK CE 16V 47µF 20% RL 5X11

- 19 -

Reference No. Part No. Description

- 20 -

C401,C402,C403,C404 153F-224J-5-MIB CM 50V 0.22µF 5% RL 7x5
C405 157D-228M-5-X9E CE 16V 2200µF 20% RL 12.5x20
C406,C407 157D-108M-5-S9K CE 16V 1000µF 20% RL 10x20
C408,C409 157D-227M-5-OMK CE 16V 220µF 20% RL 8x7
C410,C411,C420,C706 150F-104K-5-II CC 50V 0.1µF 10% RL 5x5
C412,C414,C906,C942 157D-107M-5-KUK CE 16V 100µF 20% RL 6x11
C413,C421 157E-108M-5-S9E CE 25V 1000µF 20% RL 10X20
C415 157F-107M-5-OW CE 50V 100µF 20% RL 8x12
C416,C417,C418 157F-107M-5-OVK CE 50V 100µF 20% RL 8x11.5
C419 157C-476M-5-IMK CE 10V 47µF 20% RL 5X7
C702,C707 153F-102J-5-IM CM 50V 1000PF 5% RL 5x7
C703 150F-103K-5-II CC 50V 0.01µF 10% RL 5x5
C705 150F-681J-5-OI CC 50V 680PF 5% RL 8X5
C709 157C-107M-5-IU CE 10V 100µF 20% RL 5x11
C901 *CE 150F-223K-2-FD CC 50V 0.022µF 10% AT
C902,C903,C930,C932,C941,C949, 150F-223K-2-FD CC 50V 0.022µF 10% AT
C950,C968,C970,C974,C976,C978,
C981,C987

C904,C928,C975 157D-106M-5-GM CE 16V 10µF 20% RL 4x7
C911 150F-200J-2-FC CC 50V 20pF 5% AT 3.5x2
C912,C913 150F-102K-2-FC CC 50V 1000pF 10% AT 3.5x2
C914,C915,C945,C982 150F-101K-2-FC CC 50V 100pF 10% AT 3.5x2
C916 150F-331K-2-FC CC 50V 330pF 10% AT 3.5x2
C924 15CH-270J-5-GG CTC 0/60 27pF 5% RL 4x4
C925 15CH-200J-5-GG CTC 0/60 20pF 5% RL 4x4
C926 153F-333J-5-NLM CM 50V 0.033µF 5% RL 7.5
C927,C943,C977 157F-225M-5-GM CE 50V 2.2µF 20% RL 4x7
C929 157F-224M-5-GM CE 50V 0.22µF 20% RL 4x7
C931,C986,C990 157B-107M-5-KM CE 6.3V 100µF 20% RL 6x7
C944 157F-475M-5-GM CE 50V 4.7µF 20% RL 4x7
C946,C948 157F-105M-5-GM CE 50V 1µF 20% RL 4x7
C947 157F-474M-5-GM CE 50V 0.47µF 20% RL 4x7
C951 157E-475M-5-GME CE 25V 4.7µF 20% RL 4X7
C953,C954,C965 150D-272K-2-FC CC 16V 2700pF 10% AT 3.5x2
C959,C960,C963,C964,C979 157D-226M-5-GM CE 16V 22µF 20% RL 4X7
C961,C962 *CE 153F-152J-5-KW CM 50V 1500pF 5% RL 6x12
C961,C962 *AH 153F-272J-5-JM CM 50V 2700PF 5% RL 5.5x7
C967 157D-474M-5-II CE 16V 0.47µF 20% RL 5x5
C969 157D-476M-5-IM CE 16V 47µF 20% RL 5X7
C971 15CH-080D-5-GG CTC 0/60 8pF 0.5pF RL 4x4
C973 153F-473J-5-NLM CM 50V 0.047µF 5% RL 7.5x6.5
C980 153F-152J-5-KW CM 50V 1500pF 5% RL 6x12
C985 150F-561K-2-FC CC 50V 560pF 10% AT 3.5x2
C988,C989 15CH-300J-5-IG CTC 0/60 30pF 5% RL 5x4
C991 15CG-102J-7-IJ CTC 0/30 1000pF 5% RM 5x5.5
C992 150F-103K-2-FC CC 50V 0.01µF 10% AT 3.5x2
R995 150F-224M-N-II CC 50V 0.22µF 20% RLF MO

Reference No. Part No. Description

- 21 -

TUNER

M901 1300-0726-0 TUNER ENV172D3G1

COIL

L701 1807-273J-PS COIL 27MH 5% 8.3X9.7
L901 1801-220K-M COIL 22µH 10% AL BL7
L905,L985,R912 1801-101K-M COIL 100µH 10%

WAFER/CONNCETOR

0205 *AH 2107-0641-0 ANT-TERMINAL F-TYPE
0205 *CE 2107-0681-0 ANT-TERMINAL (DIN-TYPE)
J201A 2102-031S-004 3 PIN ST. WAFER
J202B 2101-1591-0 FLEXIBLE CONN. 35P P1.25
J203B 2102-051S-004 5P ST.WAFER
J401B 2102-081S-004 WAFER 8P P2.5 ST.

JACK

0204 2113-1300-0 2P RCA JACK W/R AU
M302,M303 2113-1179-0 PHONE JACK D3.5 BK
P901 2113-1160-0 WAFER 2P ST. P=2.5 NH

CRYSTAL

M905 2300-0440-0 CRYSTAL 7.2MHZ 20PPM
M985 2300-1220-0 CRYSTAL 4.332MHZ

CERAMIC FILTER

M902,M904 2701-0010-1 CF10.7 +-30
M903 *CE 2701-0010-1 CF10.7 +-30
M911 2701-0680-0 CF 450 +-1

IC

U201 3131-9750-1 IC LC866448B 8 BIT
U202 3131-7250-0 IC 24C08 8K EEPROM
U402 3130-8190-0 IC NJM78M56FA 5.6V
U701 3130-4990-0 IC LM393D DUAL VOLTAGE
U901 3130-8180-0 IC LA1837 AM/FM IF
U902 3131-9040-0 IC LC72723M RDS
U903 3131-3760-0 IC LC7218 PLL FREQ

RESISTOR

R201,R205,R297,R918,R942,R992 4701-472J-2 RCF 1/8W 4.7K 5% AT
R218.R219,R401,R402,R404,R702, 4701-102J-2 RCF 1/8W 1K 5% AT
R903,R916,R919,R920,R923,R924,
R951,R968,R985-R987

R230,R231,R257,R267,R285,R286, 4701-223J-2 RCF 1/8W 22K 5% AT
R952,R953

Reference No. Part No. Description

- 22 -

R232,R253-R256,R281-R284,R703, 4701-103J-2 RCF 1/8W 10K 5% AT
R705,R707,R714,R715,R722,R723,
R906,R915,R927,R947,R948,R954,
R972,R989,R991

R403 4701-100J-2 RCF 1/8W 10R 5% AT
R701,R961,R962,R988 4701-471J-2 RCF 1/8W 470R 5% AT
R704,R712 4701-182J-2 RCF 1/8W 1.8K 5% AT
R706 4701-152J-2 RCF 1/8W 1.5K 5% AT
R708,R711,R944,R963,R964,R969, 4701-104J-2 RCF 1/8W 100K 5% AT
R974,R983,R993,R997

R709,R943 4701-822J-2 RCF 1/8W 8.2K 5% AT
R901 *CE 4701-333J-2 RCF 1/8W 33K 5% AT
R902,R931,R955 4701-220J-2 RCF 1/8W 22R 5% AT
R903 *CE 4701-123J-2 RCF 1/8W 12K 5% AT
R905 *CE 4701-681J-2 RCF 1/8W 680R 5% AT
R907,R946,R949 4701-332J-2 RCF 1/8W 3.3K 5% AT
R909,R910 4701-331J-2 RCF 1/8W 330R 5% AT
R911,R981 4701-101J-2 RCF 1/8W 100R 5% AT
R921,R922,R929 4701-222J-2 RCF 1/8W 2.2K 5% AT
R925,R926 4701-820J-2 RCF 1/8W 82R 5% AT
R928 4701-221J-2 RCF 1/8W 220R 5% AT
R945 4701-512J-2 RCF 1/8W 5.1K 5% AT
R950 4701-684J-2 RCF 1/8W 680K 5% AT
R957,R958 *CE 4701-302J-2 RCF 1/8W 3K 5% AT
R957,R958 *AH 4701-432J-2 RCF 1/8W 4.3K 5% AT
R959,R960 *CE 4701-154J-2 RCF 1/8W 150K 5% AT
R959,R960 *AH 4701-623J-2 RCF 1/8W 62K 5% AT
R973 4701-183J-2 RCF 1/8W 18K 5% AT
R975 *AH 4701-243J-2 RCF 1/8W 24K 5% AT
R975 *CE 4701-563J-2 RCF 1/8W 56K 5% AT
R978,R984 4701-105J-2 RCF 1/8W 1M 5% AT
R990 4701-473J-2 RCF 1/8W 47K 5% AT

SVR

R941 4756-2236-3-06 SVR 22K H3 7X7.6 RH0615C
R956 4756-1036-3-06 SVR 10K H3 7X7.6 RH0615C

DIODE

D202,D206,D208,D209,D211,D213, 4804-1480-C DIODE 1N4148 ATS
D309,D980,D981,J965

D401-D409 4804-0010-2 DIODE 1N4001 AT
D410 4837-27V0-2 DZ 1/2W 27V(26.2-27.6)AT
D411,D412 4837-10D1-2 DZ 1/2W 9.94~10.44V ROHM
D701 4837-4B71-2 DZ 1/2W 4.55~4.80V ROHM
D901 4837-4C20-2 DZ 1/2W 5.0-5.2V AT
D902 4837-7C20-2 DZ 1/2W 9.1-9.5V AT
J213 4837-3V36-2 DZ 1/2W +-5% 3.3V TEMIC

Reference No. Part No. Description

- 23 -

TRANSISTOR

Q401,Q402 485A-950Y-5 TR 2SA950-Y HFE 100-200
Q403 4860-0050-5 TR SS8050 C/D SAMSUNG RL
Q702,Q703,Q902 4851-9230-5 TR 2SC1923-0 HFE 70-140
Q901 *CE 485C-945P-5 TR 2SC945P HFE 200-400
Q903,Q945,Q981 485A-114E-5 TR DTA114ESA ROHM
Q922,Q923,Q942 4860-1590-5 TR 2SC1740S
Q943,Q944 4860-8120-G TR 2SD1468S TPS ROHM
Q980,Q983,Q984 485C-114E-5 TR DTC114ES
Q982 4853-63BL-5 TR N-JEET 2SK-363BL

PC BOARD

1725-080B-0100 PCB MAIN/KEY/VFD N0A50C

MISCELLANEOUS

L903,L904 5600-3386-S COIL MPX LPF NMC-4085
L941 5600-3396-S COIL FM DET-1 10.7MHZ
L942 5600-3406-S COIL FM DET-2 10.7MHZ
L971 5600-3280-G COIL MW RF BLOCK
L972 5600-3416-S COIL AM IFT NMIF-4062
M219 2703-0200-0 CR 6MHZ CSTLA6M00G55-A0
R801A *AH 4132-1061-0 SOLDER TAG
TUNER 4131-7701-0 ANTENNA WASHER

Reference No. Part No. Description

NOTE: - The components identified by

mark are critical for risk of fire and electrical shock.

Replace only with part number specified.

- <*AH > : USA, Canadian model only.

- <*C > : European model only.

- Capacitors : CP-Polystyrene, CM-Mylar, CE-Electrolytic, CC-Ceramic, CTC-NPO.

- Resistors : RMF-Metal Film, RCF-Carbon Film.

- 24 -

EXPLODED VIEW

- 25 -

EXPLODED VIEW PARTS LIST

0100 *AH GREY/*AH TI 1402-351A-1 CHASSIA C422 (AH)

0100 *CE GREY/*CE TI 1402-351B-1 CHASSIA C422 (C)

0101 *AH GREY/*CE GREY 1402-3531-0 TOP COVER BLACK (C542)

0101 *AH TI/*CE TI 1402-3532-0 TOP COVER SILVER (C542)

0102 *AH GREY/*CE GREY 1466-5201-1 FASCIA BLACK (C422)

0102 *AH TI/*CE TI 1466-5202-1 FASCIA SILVER (C422)

0105 1806-3541-0 X'FORMER 120/230V I/P

0106 *AH GREY/*CE GREY 2442-1002-0 POWER BUTTON BLACK

0106 *AH TI/*CE TI 2442-1003-0 POWER BUTTON SILVER

0107 *AH GREY/*CE GREY 2444-1203-0 BUTTON TRIO BLACK

0107 *AH TI/*CE TI 2444-1204-0 BUTTON TR10 TITANIUM

0108 *AH GREY/*CE GREY 2446-6201-1 TUNE/PRESET KNOB BLACK C422

0108 *AH TI/*CE TI 2446-6202-1 TUNE/PRESET KNOB SILVER C422

0109 2600-4008-0973 FLAT WASHER M4X0.8X9.7

0110 2640-4030-0703 M4 NUT (BLK)

0111 2842-3367-0 METAL WASHER

0112 *AH TI/*CE TI 2900-4006-2010 SCM PW M4X6 RECESS WHITE

0112 *AH GREY/*CE GREY 2900-4006-3010 M4X0.5PX6MM W/FLAT

0113 2900-4010-3030 PH W/WASHER M4X10 BL ZN

0114 2904-3006-0000 SCREW M3X6

0116 2954-3008-0000 TAPPING 3X8MM B-TITE

0117 2954-3006-0000 3X6MM B-TITE (YEL.ZN)

0118 2954-3008-0000 TAPPING 3X8MM B-TITE

0119 2954-3008-3000 T3X8MM SELF TAPPING

0120 *AH GREY/*CE GREY 2954-3008-3000 T3X8MM SELF TAPPING

0120 *AH TI/*CE TI 2954-3010-4000 ST SCREW 3X10 BH

0121 2954-3008-3000 T3X8MM SELF TAPPING

0122 2954-3008-0000 TAPPING 3X8MM B-TITE

0123 2954-3008-3000 T3X8MM SELF TAPPING

0124 2954-3008-3000 T3X8MM SELF TAPPING

0125 2600-4008-0973 FLAT WASHER M4X0.8X9.7

0126 3716-4314-0 WINDOW LENS C420 W/SS

0127 1402-3783-2 STRAP (C542)

0128 4151-9411-0 CUSHION 130X10X1MM

0129 4152-3851-0 SQ. STRAIN RELIEF

0131 4157-0501-1 RUBBER FOOT

0132 4152-4641-1 CUSHION FOOT W/RUBBER WA

0133 2954-3008-0000 TAPPING 3X8MM B-TITE

0134 4134-9281-1 TUNE/PRESET KNOB SPRING

ITEM Part No. Description

- 26 -

NOTE: - The components identified by

mark are critical for risk of fire and electrical shock.

Replace only with part number specified.

- <*AH > : USA, Canadian model only.

- <*C > : European model only.

0136 *AH GREY/*AH TI 7009-3100-2 AC CORD 18AWGX2

0136 *CE GREY/*CE TI 7009-3110-0 AC CORD (SEMKO)

0137 3714-5706-0 LED LENS (412) CLEAR SAN

0140 2954-3008-0000 TAPPING 3X8MM B-TITE

0141 2954-3008-0000 TAPPING 3X8MM B-TITE

0143 2600-3005-0803 METAL WASHER M3X0.5X8MM

0144 2954-3008-0000 TAPPING 3X8MM B-TITE

0146 2954-2006-0000 TAPPING SCREW 2X6

J202C 7012-5260-0 FLEXIBLE CABLE 35P L=150

ITEM Part No. Description

- 27 -

PACKING DIAGRAM

ITEM PART NO. DESCRIPTION Q’TY

1 1408-0203-0 CARTON BOX C422 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 4301-7074-1 INSTRUCTION MANUAL 1
8 2103-7302-1 RCA PLUG (MALE) 1
9 2107-0661-1 300-OHM T ANTENNA 1

10 2113-1155-0 AM LOOP ANTENNA 1

11 2103-6101-0 RF CONNECTION PLUG (F-TYPE) 1

12 1450-2520-0 WHITE PAPER 1

Proprietary information for servicing purposes only. The information herein may not be used com­mercially without the prior written agreement of NAD Electronics International, Toronto, Canada.

SERVICE MANUAL

© NAD 2004

NAD ELECTRONICS INTERNATIONAL

TORONTO

STEREO

AM/FM TUNER

C 422