NAD C-730 Service manual

NAD

SER VICE MANUAL

C 730

STEREO

RECEIVER

C 730

STEREO

RECEIVER

2

SERVICE SAFETY PRECAUTIONS

1. Replacing the fuses
CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY

WITH SAME TYPE OF FUSE.

Reference No Part Number Description

M151 *AH 5120-0037-0 FU T3.15A 250V UL/CSA 5X20MM
M152 *C 5100-2530-1B T2.5A/250V IEC
M154 *AH 5120-0052-0 FUSE T1.6A 250V 5X20MM UL/CSA

NOTE:

<*AH > : USA, CANADIAN MODEL ONLY.
<*C > : EUROPEAN MODEL ONLY.

2. 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

REAR PANEL / FRONT PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

ADJUSTMENT POINTS DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

INSTRUMENT SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

ALIGNMENT PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-11

IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-14

SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-19

IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-23

ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-33

EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35-36

PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

3

SPECIFICATIONS

POWER AMPLIFIER SECTION

1. Rated Distortion
(THD 20Hz-20KHz, 30W, 8 ohm) ≤0.08%
(THD 1KHz, 30W, 4 ohm) ≤0.1%

2. Input Sensitivity (ref. 30W 8 ohm, 1KHz) 350+/-30mV

3. S/N Ratio (A-wtd, 1K ohm, 500mV CD in, 1KHz) ≥-85dB

4. Frequency Response (500mV CD in, 1W, 20Hz-20KHz) 0±0.8dB

5. Channel Balance
Volume maximal output 30W (ref), 1KHz ≤1dB
1dB to -40dB, 1KHz ≤2dB

-41dB to -50dB, 1KHz ≤3dB

6. Audio Muting at 1KHz ≥-52dB

7. Headphone Output in 0.1% (600 ohm load, 500mV CD in, 1KHz) ≥10V

8. Crosstalk (2V input, 10W, 1KHz) ≤-63dB

PRE - AMPLIFIER SECTION

1. Rated Distortion (THD, 2V CD input, 4V output, 1KHz) ≤0.08%

2. Frequency Response (500mV CD in, 20Hz-20KHz) 0±0.08dB

3. S/N Ratio (A-wtd, 500mV CD in, 1KHz) ≥-85dB

4. Tone Control Response
Bass (500mV in,1W out ,100Hz) boost / cut 9±2dB
Treble (500mV in,1W out ,10KHz) boost / cut 9±2dB

AM TUNER SECTION

Frequency Range: AH 530 - 1710 KHz Step 10 KHz

C 531 - 1602 KHz Step 9 KHz
Input level is expressed as the reading in open-circuit
of 75-ohm source impedance signal generator.

1. Usable Sensitivity (999/1000KHz) ≤30dBµV

2. S/N Ratio (5mV input) ≥38dB

3. THD (5mV input) ≤3%

4. IF Rejection (450KHz) ≥36dB

5. Image Rejection (F+2xIF) ≥28dB

6. Selectivity ≥17dB

7. Output 130mV±26mV

8. Loop Sensitivity (20dB S/N) 999/1000KHz ≤66dB

603/600KHz ≤66dB
1404/1400KHz ≤66dB

9. Frequency Response (100-2.3KHz, 5mV) 0±6dB

4

FM TUNER SECTION

Frequency Range: AH 87.5 - 108 MHz Step 50 KHz

C 87.5 - 108 MHz Step 50 KHz
Input level is expressed as the reading in open-circuit
of 75-ohm source impedance signal generator.

*C *AH

1. Usable Sensitivity (Mono, 98MHz) ≤15dBµ ≤15dBµ

2. S/N Ratio (60dBµ, IHF wtd) Mono ≥72dB ≥72dB

Stereo ≥66dB ≥66dB

3. THD (60dBµ, L=R, 75KHz Dev. for AH, 40KHz Dev. for C)

Mono ≤0.3% ≤0.3%
Stereo ≤0.35% ≤0.35%

4. IF Rejection (10.7MHz) ≥78dB ≥65dB

5. Image Rejection (119.4MHz) ≥85dB ≥85dB

6. Capture Ratio (40dBµ) ≤3dB ≤3dB

7. AM Suppression (60dBµ, 100%mod FM, 30%mod AM) ≥48dB ≥48dB

8. Pilot Suppression (60dBµ) ≥60dB ≥60dB

9. Frequency Response

(60dBµ, 20Hz - 15KHz in, 75µS for AH, 50µS for C and 0±1.5dB 0±1.5dB

Japan)

10. Channel Separation (60dBµ, IHF wtd) 100Hz ≥30dB ≥30dB

1KHz ≥38dB ≥38dB
10KHz ≥30dB ≥30dB

11. Alternate Channel Selectivity (±400KHz, IHF) ≥60dB ≥45dB

12. Muting Level 18±3dBµ 18±3dBµ

13. Output 750mV±150mV 500mV±100mV

14. Blend on Separation (60dBµ IHF wtd) 6±2dB 6±2dB

15. RDS Decode Sensitivity ≤26dBµ ≤26dBµ

16. Auto-search Sensitivity OFF ≤15dBµ ≤15dBµ

ON ≤24dBµ ≤24dBµ

PHYSICAL SPECIFICATIONS

Dimensions (Width x Height x Depth) 435 x 109 x 305 mm
Net weight 7.2 kg (15.87 lbs)
Shipping weight 9.2 kg (20.5 lbs)

5

REAR PANEL / FRONT PANEL

REAR PANEL

FRONT PANEL

1. POWER ON / OFF

2. STAND-BY INDICATOR

3. BLEND

4. MEMORY

5. FM MUTE / MODE

6. AM / FM

7. DISPLAY

8. PRESET / TUNE

9. PRESET / TUNE AND

10. DISPLAYAREA

11. VOLUME

12. HEADPHONE SOCKET

13. INPUT SELECTORS

14. BASS & TREBLE

15. TONE DEFEAT

16. BALANCE

1. FM ANTENNA

2. AM ANTENNA

3. DISC INPUT

4. CD INPUT

5. VIDEO INPUT

6. AUX INPUT

7. TAPE 2 IN, OUT

8. TAPE 1 IN, OUT

9. PRE OUT

10. NAD-LINK IN, OUT

11. SOFT CLIPPING

12. 12V TRIGGER OUT

13. SPEAKERS

14. AC LINE CORD

15. SWITCHED AC OUTLET (AH version only)

6

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.

5

4

3

1

2

7

6

6

7

BLOCK DIAGRAM

TUNER

IN

AUDIO

OUT

LA1837

AM/FM IF

FRONT END

VT

ENV172D3G1

AC INPUT

RELAY

AUDIO IN

LC72723M

TUNE

ST/MO, MUTE, SMETER

data

AM

OSC/IF

LC7218

FM

OSC/IF

PLL

VT

MAIN

POWER

SUPPLY

DIODE

MATRIX

IN-OUT

NAD LINK

OUT

SPEAKER

RELAY

AMP.

POWER

AC INPUT

POWER

SUPPLY

STAND BY

Protect

+5V CPU

MUTE

out

ce data clk RDS-CLK RDS-SIG RDS-DATA

CPU

(#1)=Power On

(#2)=Protect (Flash 2Hz)

(#1)+(#2)=Standby

VFD

VOLUME

MOTORIZE

AM LOOP ANT FM ANT

Locking SW,

Tone defeat

Trigger Out

KEY MATRIX

SENSOR

REMOTE

CD

DISC

VIDEO

(#1)

(#2)

TC9273

S1 1

S2S3S4S5S6S7S8S9S10

AUX

OUT

TAPE-1

TAPE-2

OUT

IN

TAPE-2

L R

12 17

PRE OUT

TAPE-1

IN (Mon)

8

WIRING DIAGRAM

3PIN BLACK

35PIN BLACK

P39 P40 P41 P42 P43 P44 P45 P46 P47 P48

SECONDARY BOARD

TRANSFORMER

3PIN BLACK

P33 P34 P35 P36

P32

PRIMARY BOARD

KEY BOARD

BROWN

RED

BLUE

BLUE

LED BOARD

4PIN BLACK

PSU BOARD

AC INPUT

POWER SWITCH BOARD

TUNER BOARD

BLACK

SPEAKER BOARD

3PIN BLACK

6PIN BLACK

MAIN BOARD

BLACK

6PIN BLACK

BLACK

PHONE BOARD

BLUE

GREEN

OSC RF

Testing
Point
TP2

Testing
Point
TP1

Testing
Point
TP3

Testing
Point
TP4

9

ADJUSTMENT POINTS DIAGRAM

1. TUNER

2. MAIN BOARD

FM

SIGNAL

GENERATOR

OUTPUT

TERMINAL

OUTPUT

TERMINAL

DISTORTION

ANALYZER

DISTORTION

ANALYZER

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,
GND

FM

SIGNAL

GENERATOR

AM

SIGNAL

GENERATOR

FM

SIGNAL

GENERATOR

RDS

GENERATOR

FM

STEREO

GENERATOR

P901

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

AMPLIFIER SECTION

Step Item Connection Adjustment Adjust for

1 Left Channel Voltmeter to TP1, TP2 on Amp Board R868 2mV±0.2mV
2 Right Channel Voltmeter to TP3, TP4 on Amp Board R867 2mV±0.2mV

11

FM/RDS SECTION

INPUT

- FM mono: 1kHz, 75kHz devi., 60dB/µV

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

OUTPUTS

- Connect the non-inductive type resistor of 8 ohms to all
speaker terminals otherwise noted.

Item

FM

IF/RF

Stereo

Distortion

Stereo

Separation

Muting

Level

Signal
output

Step

1

DC voltmeter L941

0±100mV

3

Distortion

analyzer

Distortion

analyzer

Oscilloscope

Oscilloscope

L942

R956

R941

Minimum

Minimum

2 AC voltmeter

IFT on the

front end

IFT on the

front end

Maximum

Maximum

separation

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

99.0MHz

1KHz 75KHz devi

33dBµ

99.0MHz

mod.65dBf(60dB)

99.0MHz 18dB

99.0MHz

99.0MHz

Pilot

Suppression

Signal
Strength
Indicator

RDS

MIN

7 bars just

lit

VTVM

VFD Signal

Bars

L903 FOR L
L904 FOR R

R991

Channel L or

R pilot on

signal

–

Fig.2

Fig.1

Fig.3

99.0MHz

99.0MHz

–

– – –

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.

Adjust such that
output just unmute

Decode the RDS­program station

AM SECTION

AM 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

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 or delete the AM step
jumper - J201 in the key PCB.

PCB LAYOUT

KEY BOARD

TOP VIEW

BOTTOM VIEW

PHONE BOARD

LED BOARD

SECONDARY BOARD

PRIMARY BOARD

12

13

MAIN BOARD

14

TUNER BOARD PSU BOARD

POWER SWITCH BOARD

SPEAKER BOARD

1615

MAIN BOARD

SCHEMATIC DIAGRAM

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

UNLESS OTHERWISE SPECIFIED.

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

17 18

TUNER BOARD

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

UNLESS OTHERWISE SPECIFIED.

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

19

KEY BOARD

S10

S11

S12

S13

S14

S01

S02

S03

S04

S05

S06

S26

S07

S08

S09

S15

S16

S17

S18

S19

S20

S21

S22

S23

S24

S01

S03

S04

S05

S06

S07

S08

S09

S10

S11

S12

S13

S14

S15

S16

S18

S19

S20

S22

S23

S24

S33

AC4V8_1

AC4V8_2

AC4V8_2

AC4V8_1

S25

S25

AC4V8_1

AC4V8_2

S02

S21

S25

S33

+13V

STANDBY RELAY

S17

+5V

+5V

S26

S25

-VP

+5V6

-VP

N/A

NAD

N/A

N/A

TONE IN

NAD IN

RESET

HEAD_P IN

XT_2

VSS_1

6M_CF

6M_CF

VDO_1

A/D 0

A/D 1

A/D 2

4.4V DETECT

PROTECT IN

RDS SIGNAL

FA SMETER

AM SMETER

TRIGGER IN

RDS CLK IN

REMCON

10G

9G

8G

7G

6G

5G

4G

3G

2G

1G

P18

P17

P16

P15

P14

P13

VDO

-30V

P12

P11

P10P9P8P7P6P5P4P3P2P1N/A

OPTION INPUT

FM STEREO

RDS DATA

FM SD

RSD SELECT

AM STEP

FM STEP

MODEL

TONE

SPK RELAY

MUTE

TUNER MUTE

STANDBY RELAY

VOL. UP

VOL. DN

11 LED

12 LED

VSS_2

9273/7218 DATA OUT

7218 DATA

9273/7218 CLK

9273 STB

EE_DATA OUT

7218 CE

EE_CLK OUT

123

123456789

10111213141516171819202122232425262728293031323334

35

123456789

101112131415161718192021222324252627282930313233343536

37

123

123

123

4

17

OUT

SELECT

4142434445464748495051525354555657585960616263

64

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

1

2

3

456

7

8

91011

12

13

14

15

16

18

19

20

21

22

23

24

25262728293031323334353637383940

OUT

U201

LC866448

R258

22K

R259

22K

C208

47u/16V

M216

BLEND

M210

FM MUTE

M207

FM/AM

M201

TUNE

M213

MEMORY

M202

DISC

M206

TUNE DN

M203

DISPLAY

M219A

6MHz

CST6.00MGW

R257

22K

R232

10K

D209

1N4148

D202

1N4004

R231

22K

D204

1N4148

D205

1N4148

D206

1N4148

D207

1N4148

R252

10K

R253

10K

R254

10K

R255 10K

R256 10K

R281 10K

R282

10K

R283 10K

R284 10K

R285 22K

R286

22K

C205

0.1u

R230

22K

R219 1K

R218 1K

J201A

TO LED BD

R201

820

R204 820

R207

1K8

R210

2K2

R213

4K7

M217

TAPE1_MON

M215

TAPE2

M211

AUX

M208

VIDEO

M205

CD

M214

TUNER

R208

1K8

R211

2K2

R214

4K7

R216

6K8

R202

820

R205

820

R203

820

R291

10K

R292

10K

R293

10K

C203

100u/6V3

C204

0.01u

J206A

35PIN

RDS CLK IN

TRIGGER

AM SMETER

FM SMETER

RDS SIGNAL

PROTECT IN

TONE IN

7218 CE

9273 STB

9273/7218 CLK

7218 DATA

9273/7218 DATA OUT

VOL DN

VOL UP

+13V

TUNER MUTE

MUTE

SPK RELAY

FM SD

RDS DATA

FM STEREO

-30V

5V6

M220

DISPLAY

R263 100K
R264 100K
R265 100K
R266 100K
R267 100K
R268 100K
R269 100K
R270 100K
R271 100K
R272 100K
R273 100K
R274 100K

R241 100K

R242 100K

R243 100K

R244 100K
R245 100K
R246 100K

R233 10K

R234 10K

R235 10K

R236 10K

R237 10K

R238

10K

R239 10K

R240 10K

R247 10K

R248 10K M218

PIC-12043TE2

REMOTE SENSOR

L201

22uH

D203

5V6 1/2W R220

470R

R221

470R

R222

470K

D201

1N4148

C201

100u/6V3

C202

0.01u

J104B

AC POWER

R215

820

M209

TUNE UP

GREEN

RED

J101

TO POW

D210

1N4148

C206

10U/16V

R260

470R

D211

5V1

GREEN=ON

GREEN+RED=STDBY

NAD IN

NAD OUT

TONE OUT

HEAD-PIN

D_GND

5V1

R294

4.7K

1

2

3

4

5

6

7

8

U202

24C08

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

UNLESS OTHERWISE SPECIFIED.

2. CERAMIC CAPACITORS ARE 50V 10%

UNLESS OTHERWISE SPECIFIED.

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

Interrupt Control

IR

EPROM(48KB)

EPROM
Control

A15-A0
D7-D0
TA
CE
OE
DASEC

PC

ACC

B Register

C Register

PSW

RAR

RAM

Stack Pointer

Watch Dog Timer

Port 0

ALU

PLA

Stand-by Control

CF

Clock

Generator

RC

X'tal

Bus Interface

SIO0

BASE TIMER

Port 1

SIO1

Port 3

Timer 0

Port 7

Timer 1

Port 8

ADC

VFD Controller

RAM 128bytes

Real Time

Service

High Voltage

Output

INT0-3

Noise Filter

20

IC BLOCK DIAGRAM

U201: LC866448B

21

U202: 24C08

U401: TC9273N

VCC

GND

WP

SCL

SDA

A

2

A

1

A

0

8

4

7

6

5

3

2
1

START

STOP

LOGIC

LOAD

DEVICE

ADDRESS

COMPARATOR

R/W

SERIAL

CONTROL

COMP

LOAD INC

DATA WORD

ADDR/COUNTER

LOGIC

EN

H.V. PUMP/TIMING

DATA RECOVERY

EEPROM

X DEC

Y DEC

D

IN

D

OUT

V

SS

1

V

DD

26

2S1

27 S1

SERIAL MUX

/ACK

D

OUT

LOGIC

3S2 26 S2

4S3 25 S3

5S4 24 S4

6S5 23 S5

7S6 22 S6

8S7 21 S7

(L-ch)

10bit

Latch

Circuit

9S8 20 S8

10S9 19 S9

(R-ch)

10bit

Latch

Circuit

(Same

as L-ch

Circuit)

11S10 18 S10

12S11

LEVEL SHIFT + SHIFT RESISTER

CIRCUIT

13

GND14CK

15

DATA16STB

17 S11

22

U901: LA1837

U603: NJM78M

U501: NJM4558D
U702, U703: NJM5532
U704: TL072CP

AMPLIFIER 1

OUTPUT

INVERTING

INPUT

NON-INVERTING

INPUT

V Ð

AMPLIFIER 2

8

7

V +

OUTPUT

1

2

+ Ð Ð +

INVERTING

3

4

6

INPUT

NON-INVERTING

5

INPUT

1

INPUT

2

GND

3

OUTPUT

FM SD

ADJ

OSC

REG

AM RF

INPUT

AFC

AM AGC

AM DETECTOR

INPUT

FM DETECTOR

OUTPUT

MPX

IUTPUT

MPX

OUTPUT

MPX

OUTPUT

STEREO L

INPUT

STEREO R

INPUT

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

P-DET

¯

304kHz

3 rd 5 th

DECODER

ANTI-BIRIDE

STEREO

VCO

SW

38k

MUTE

FF

FF

19k

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

OUTPUT

AM S-METER

MUTE

AM MIXER

FM IF INPUT

OUTPUT

BYPASS

FM IF INPUT

GND

AM IF INPUT

TU-LED

L-OUT

FM/AM

SWITCH

PILOT

DET

R-OUT

CO

PILOT V

23

U903: LC7218

U902: LC72723M

Vdda

Vssa

MPXIN

TEST

3

4

2

7

REFERENCE

VOLTAGE

ANTIALIASING

FILTER

TEST

V
1

REF

57kHz

BPF

(SCF)

FLOUT5CIN

SMOOTHING

FILTER

CLK(4.332MHz)

X

6

V

REF

OSC

9

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

OUT

SYC

6

1X

IN

24X

19FM

IN

18AM

IN

2CE

3DI

4CL

REFERENCE

DIVIDER

1

SWALLOW COUNTER

2

SHIFT REGISTER

1/16,1/17 4 BIT

12-BIT PROGRAMMABLE

LATCH

PHASE DETECTOR

CHARGE PUMP

DIVIDER

UNIVERSAL

COUNTER

21 PD1

22 PD2

16 HCTR

15 LCTR

3 V

DD

4 V

SS

5DO

9

OUT010OUT111OUT212OUT313OUT414OUT517OUT67IN08IN1

24

ELECTRICAL PARTS LIST

Reference No. Part No. Description

LED ASSEMBLY

PCB BOARD

01000 PCB-N0940C-LED LED ASSEMBLY

LED

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

MAIN ASSEMBLY

PCB BOARD

02000 PCB-N0940C-MAIN MAIN ASSEMBLY

CAPACITORS

C330, C332 150F-104K-2-FC CC 50V 0.1µF 10% AT
C333 150F-223K-2-FD CC 50V 0.022µF 10% AT
C401-C418 150F-101K-2-FC CC 50V 100pF 10% AT 3.5x
C420 153F-103J-5-IM CM 50V 0.01µF 5% RL 5x7
C501, C502 8910-0057-0 CE 63V 4700µF 20% RL
C503, C504 157F-106M-5-IMK CE 50V 10µF 20% RL 5x7
C505 153F-104J-5-QUN CM 50V 0.1µF RL (9x11)
C506, C507 157D-106M-5-IUK CE 16V 10µF 20% RL 5x11
C601, C602 157F-106M-5-IMK CE 50V 10µF 20% RL 5x7
C603, C604 150F-223K-2-FD CC 50V 0.022µF 10% AT
C605 157E-338M-5-5$ CE 25V 3300µF 20% RL
C606 157E-108M-5-X& CE 25V 1000µF 20% RL
C607 157B-227M-5-LMK CE 6.3V 220µF 20% RL
C608-C610 150F-223K-2-FD CC 50V 0.022µF 10% AT
C611 157F-107M-5-OW CE 50V 100µ F 20% RL 8x12
C613 157F-476M-5-LU CE 50V 47µF 20% RL
C747 157D-106M-5-IUK CE 16V 10µF 20% RL 5x 11
C748 150F-330J-2-FC CC 50V 33PF 5% AT 3.5x 2
C761, C762 150F-101J-5-IF CC 50V 100pF 5% RL 5x3.5
C763, C764 157C-476M-5-IMK CE 10V 47µF 20% RL 5x7
C765-C770 150F-101J-5-IF CC 50V 100pF 5% RL 5x3.5
C771, C772 157D-106M-5-IUK CE 16V 10µF 20% RL 5x11
C773, C774 153F-103J-5-IM CM 50V 0.01µF 5% RL 5x7
C775, C776 150F-101J-5-IF CC 50V 100pF 5% RL 5x3.5
C777, C778 153F-183J-5-KP CM 50V 0.018µF 5% RL
C779, C780 150F-101J-5-IF CC 50V 100pF 5% RL 5x3.5
C781, C782 157D-106M-5-IUK CE 16V 10µF 20% RL 5x11
C783, C784 157F-105M-5-GMK CE 50V 1µF 20% RL 4x7
C785, C786 150F-221K-5-GG CC 50V 220pF 10% RL 4x4
C787, C788 157C-107M-5-IU CE 10V 100µF 20% RL 5x11
C789 157D-106M-5-GMN CE 16V 10µF 20% RL 4x7
C801, C802 157E-226M-5-GMK CE 25V 22µF 20% RL 4x7
C803, C804 150F-151K-2-FC CC 50V 150pF 10% AT 3.5x
C805, C806 15CH-020C-5-GG CTC 0/60 2pF 0.25pF RL
C807, C808 150F-101J-5-IF CC 50V 100pF 5% RL 5x3.5
C809, C810 157D-107M-5-KUK CE 16V 100µF 20% RL
C811, C812 157D-476M-5-IMK CE 16V 47µF 20% RL
C813, C814 150F-101J-5-IF CC 50V 100pF 5% RL 5x3.5
C815, C816 150F-070D-5-GG CC 50V 7PF 0.5PF RL 4x4
C817-C820 157F-106M-5-IMK CE 50V 10µF 20% RL 5x7
C821, C822 150F-223Z-5-UG CC 50V 0.022µF +80/-20%
C823, C824 153F-473J-5-NLM CM 50V 0.047µF 5% RL 7.5
C829, C830 157F-108M-5-X& CE 50V 1000µF 20% RL

25

C833 150F-223Z-5-UG CC 50V 0.022µF +80/-20%
C840-C843 150F-101J-5-IF CC 50V 100pF 5% RL 5x3.5
C844 153F-103J-5-IM CM 50V 0.01µF 5% RL 5x7
C845 157B-107M-5-KMK CE 6.3V 100µ F 20% RL
C846 150F-223Z-5-UG CC 50V 0.022µF +80/-20%
C847, C848 157D-476M-5-IMK CE 16V 47µF 20% RL
C849-C852 157D-106M-5-IUK CE 16V 10µF 20% RL 5x11
C853 157D-337M-5-OVK CE 16V 330µ F 20% RL
C864 153F-103J-5-IM CM 50V 0.01µF 5% RL 5x7
C865 157D-106M-5-GMN CE 16V 10µF 20% RL 4x7
C913, C914 157D-106M-5-IUK CE 16V 10µF 20% RL 5x11

DIODES

D305-D309 4804-1480-C DIODE 1N4148 ATS
D501, D502 4840-2040-0 BRIDGE RECTIFIER RS403L
D503 4804-1480-C DIODE 1N4148 ATS
D601 4837-27D1-2 DZ 1/2W 26.29~27.64V
D602-D605 4804-0040-2 DIODE 1N4004 AT
D607-D609 4804-0040-2 DIODE 1N4004 AT
D801, D802 4804-0040-2 DIODE 1N4004 AT
D803-D807 4804-1480-C DIODE 1N4148 ATS
D808, D809 4837-18V6-2 DZ 1/2W 18V TEMIC AT
D810-D812 4804-1480-C DIODE 1N4148 ATS
D815 4837-12V6-2 DZ 1/2W 12V 5% TEMIC AT
D816-D820 4804-1480-C DIODE 1N4148 ATS
D910 4804-0040-2 DIODE 1N4004 AT
J709, J729 4837-3A31-2 DZ 1/2W 3.16~3.38V ROHM

COILS

L801, L802 1804-0540-0 SPRING COIL 1MH
L804 1803-0014-0 COIL 1µH 10% BL 7

JACKS

M503 2113-1179-0 PHONE JACK D3.5 BK
J504 2113-1121-0 2P RCA JACK Y/Y AU
R883, R884, M701 2113-1818-0 6P RCA JACK W/R GOLD

RELAY

M801 4500-0910-0 RELAY 24VDC,125VA,3A

TRANSISTORS

M501, M502 4860-5270-5 TR TYN412 400V 12A
Q501 4860-0660-5 TR 2SA1015 (G.R.) RL
Q502 4860-0700-5 TR 2SC1815 (G.R) RL
Q503 4860-0660-5 TR 2SA1015 (G.R.) RL
Q504 4860-0700-5 TR 2SC1815 (G.R) RL
Q505, C506 4860-0660-5 TR 2SA1015 (G.R.) RL
Q601 4860-0660-5 TR 2SA1015 (G.R.) RL
Q701, Q702 4851-241A-5 TR RN1241-A
Q801 4860-0700-5 TR 2SC1815 (G.R) RL
Q802-Q804 4860-0190-5 TR 2SC 1845 (F.E) RL
Q805 4860-0700-5 TR 2SC1815 (G.R) RL
Q806 4860-0190-5 TR 2SC 1845 (F.E) RL
Q807, Q808 4860-1590-5 TR 2SC1740S
Q809-Q812 485A-949O-5 TR 2SA949-O HFE 70-140
Q813, Q814 485D-667A-5 TR 2SD667A HFE 100-200
Q815, Q816 485A-949O-5 TR 2SA949-O HFE 70-140
Q817-Q822 485C-2229-5 TR 2SC2229-0 HFE 70-140
Q823, Q824 485B-647A-5 TR 2SB647A-C HFE 100-200
Q825, Q826 485C-5196-5 TR 2SC5196-0

Reference No. Part No. Description

26

Q827, Q828 485A-1939-5 TR 2SA1939-0 HFE 80-160
Q829, Q830 4860-0190-5 TR 2SC 1845 (F.E) RL
Q831 485C-123J-5 TR DTC123JSA ROHM
Q832 4850-992F-5 TR 2SA992 HFE 300-600
Q833, Q834 4860-0190-5 TR 2SC 1845 (F.E) RL
Q835, Q836 4851-241A-5 TR RN1241-A
Q837 485A-114E-5 TR DTA114ESA ROHM
Q838, Q839 4853-63BL-5 TR N-JFET 2SK-363BL
Q840 4859-014C-5 TR 9014C HFE 200-600
Q841, Q842 4853-63BL-5 TR N-JFET 2SK-363BL
Q913, Q914 4851-241A-5 TR RN1241-A

RESISTORS

R321 4701-104J-C RCF 1/8W 100K 5% ATS
R322, R323 4701-102J-C RCF 1/8W 1K 5% ATS
R330 4701-101J-C RCF 1/8W 100R 5% ATS
R401, R402 4701-331J-C RCF 1/8W 330R 5% ATS
R403, R404 4701-105J-C RCF 1/8W 1M 5% ATS
R405, R406 4701-331J-C RCF 1/8W 330R 5% ATS
R407, R408 4701-105J-C RCF 1/8W 1M 5% ATS
R409, R410 4701-222J-C RCF 1/8W 2.2K 5% ATS
R411, R412 4701-105J-C RCF 1/8W 1M 5% ATS
R413, R414 4701-331J-C RCF 1/8W 330R 5% ATS
R415, R416 4701-105J-C RCF 1/8W 1M 5% ATS
R417, R418 4701-331J-C RCF 1/8W 330R 5% ATS
R419, R420 4701-105J-C RCF 1/8W 1M 5% ATS
R421, R422 4701-331J-C RCF 1/8W 330R 5% ATS
R423, R424 4701-105J-C RCF 1/8W 1M 5% ATS
R425, R426 4701-222J-C RCF 1/8W 2.2K 5% ATS
R427, R428 4701-105J-C RCF 1/8W 1M 5% ATS
R429, R430 4701-331J-C RCF 1/8W 330R 5% ATS
R431, R432 4701-473J-C RCF 1/8W 47K 5% ATS
R440 4701-473J-C RCF 1/8W 47K 5% ATS
R441, R501 4701-102J-C RCF 1/8W 1K 5% ATS
R502 4701-223J-C RCF 1/8W 22K 5% ATS
R503 4701-101J-C RCF 1/8W 100R 5% ATS
R504, R505 4701-102J-C RCF 1/8W 1K 5% ATS
R506 4701-103J-C RCF 1/8W 10K 5% ATS
R507 4701-101J-C RCF 1/8W 100R 5% ATS
R508 4701-223J-C RCF 1/8W 22K 5% ATS
R509 4701-103J-C RCF 1/8W 10K 5% ATS
R510 4701-472J-C RCF 1/8W 4.7K 5% ATS
R516, R517 4701-104J-C RCF 1/8W 100K 5% ATS
R518 4701-562J-C RCF 1/8W 5.6K 5% ATS
R519 4701-222J-C RCF 1/8W 2.2K 5% ATS
R520 4701-684J-C RCF 1/8W 680K 5% ATS
R521 4701-221J-C RCF 1/8W 220R 5% ATS
R522 4701-225J-C RCF 1/8W 2.2M 5% ATS
R523 474B-0R1J-5 RWR 5W 0.1R 5% RL
R601 4701-332J-C RCF 1/8W 3.3K 5% ATS
R602 4701-333J-C RCF 1/8W 33K 5% ATS
R703, R704 4701-472J-C RCF 1/8W 4.7K 5% ATS
R705, R706 4701-563J-C RCF 1/8W 56K 5% ATS
R707, R708 4701-123J-C RCF 1/8W 12K 5% ATS
R709, R710 4701-332J-C RCF 1/8W 3.3K 5% ATS
R711, R712 4701-122J-C RCF 1/8W 1.2K 5% ATS
R713, R714 4701-104J-C RCF 1/8W 100K 5% ATS
R717, R718 4701-102J-C RCF 1/8W 1K 5% ATS
R719, R720 4701-122J-C RCF 1/8W 1.2K 5% ATS
R721, R722 4701-104J-C RCF 1/8W 100K 5% ATS

Reference No. Part No. Description

27

R723, R724 4701-472J-C RCF 1/8W 4.7K 5% ATS
R725, R726 4701-103J-C RCF 1/8W 10K 5% ATS
R727-R730 4701-393J-C RCF 1/8W 39K 5% ATS
R731, R732 4701-121J-C RCF 1/8W 120R 5% ATS
R769, R770 4701-101J-C RCF 1/8W 100R 5% ATS
R801, R802 4701-272J-C RCF 1/8W 2.7K 5% ATS
R803, R804 4701-183J-C RCF 1/8W 18K 5% ATS
R805, R806 4701-331J-C RCF 1/8W 330R 5% ATS
R807, R808 4701-180J-C RCF 1/8W 18R 5% ATS
R809, R810 4701-272J-C RCF 1/8W 2.7K 5% ATS
R811, R812 4701-180J-C RCF 1/8W 18R 5% ATS
R813-R816 4701-102J-C RCF 1/8W 1K 5% ATS
R817, R818 4701-104J-C RCF 1/8W 100K 5% ATS
R819-R822 4717-680J-2-F RMF 1/2W 68R 5% AT
R823, R824 4701-183J-C RCF 1/8W 18K 5% ATS
R825, R826 4701-681J-C RCF 1/8W 680R 5% ATS
R827, R828 4701-560J-C RCF 1/8W 56R 5% ATS
R829, R830 4701-183J-C RCF 1/8W 18K 5% ATS
R831, R832 4701-472J-C RCF 1/8W 4.7K 5% ATS
R833, R834 4701-183J-C RCF 1/8W 18K 5% ATS
R835, R836 4701-272J-C RCF 1/8W 2.7K 5% ATS
R837, R838 4717-101J-C RMF 1/2W 100R 5% ATS
R839, R840 4701-562J-C RCF 1/8W 5.6K 5% ATS
R841-R844 4717-2R2J-2 RMF 1/2W 2.2R 5% AT
R845, R846 4701-271J-C RCF 1/8W 270R 5% ATS
R847, R848 4701-104J-C RCF 1/8W 100K 5% ATS
R849, R850 4717-560J-2 RMF 1/2W 56R 5% AT
R851, R852 4717-680J-2-F RMF 1/2W 68R 5% AT
R853, R854 474B-R22K-5-02 RWR 5W 0.22R X2 10% RL
R855, R856 4707-223J-2 RCF 1/2W 22K 5% AT
R857, R858 4718-8R2J-2-X RMF 1W 8.2R 5% AT
R859, R860 4717-2R2J-2 RMF 1/2W 2.2R 5% AT

R863, R864 4701-273J-C RCF 1/8W 27K 5% ATS
R869 4701-103J-C RCF 1/8W 10K 5% ATS
R870 4701-223J-C RCF 1/8W 22K 5% ATS
R871, R872 4701-333J-C RCF 1/8W 33K 5% ATS
R873, R874 4701-473J-C RCF 1/8W 47K 5% ATS
R875, R876 4718-R22J-2 RMF 1W 0.22R 5% AT
R877 4701-333J-C RCF 1/8W 33K 5% ATS
R878, R879 4718-391J-2-X RMF 1W 390R 5% AT
R880, R881 4707-822J-2 RCF 1/2W 8.2K 5% AT
R882 4701-122J-C RCF 1/8W 1.2K 5% ATS
R890 4701-472J-C RCF 1/8W 4.7K 5% ATS
R891, R892 4701-104J-C RCF 1/8W 100K 5% ATS
R894 4701-473J-C RCF 1/8W 47K 5% ATS
R895 4701-333J-C RCF 1/8W 33K 5% ATS
R896 4701-102J-C RCF 1/8W 1K 5% ATS
R897 4701-473J-C RCF 1/8W 47K 5% ATS
R902 4701-102J-C RCF 1/8W 1K 5% ATS
R906 4701-822J-C RCF 1/8W 8.2K 5% ATS
R907, R908 4701-333J-C RCF 1/8W 33K 5% ATS
R909-R911 4701-104J-C RCF 1/8W 100K 5% ATS
R913, R914 4701-822J-C RCF 1/8W 8.2K 5% ATS

VARIABLE RESISTORS

R701 4750-9930-0 VR RK16312MC 2X50KA(15AM
R702 4750-9940-0 VR RK16311 10KB (3BM)
R715, R716 4750-9950-0 VR 100KW x 2 W/CC RK16312
R867, R868 4756-2226-3-06 SVR 2.2K H3 7X7.6 R0615C

Reference No. Part No. Description

28

ICs

U303 3130-6650-0 IC 74LS00 QUAD 2-INPUT
U401 3130-8160-0 IC TC9273N ANALOG SWITCH
U501 3130-0890-0 IC NJM4558D DUAL OP AMP.
U601 3130-2520-3 IC 7812 12V REGULATOR
U602 3130-3800-0 IC UPC79M12HF REGULATOR
U603 3130-8190-0 IC NJM78M56FA5.6V
U701 3130-3410-0 IC LB1642 MOTOR DRIVER
U702,U703 3130-9560-0 IC NJM5532
U704 3130-4080-0 IC TL072CP DUAL FET OPAMP

SWITCHES

J503 5200-3171-0-01 DPDT SLIDE
M702 5200-3514-0 PUSH SW.ALPS SPUN19

PHONE ASSEMBLY

PCB BOARD

03000 PCB-N0940C-PHO PCB ASSY PHONE N094XC

CAPACITORS

C862, C863 150F-102K-5-IF CC 50V 1000pF 10% RL 5x3

JACK

M803 2113-1011-0 PHONE JACK

SECONDARY ASSEMBLY

PC BOARD

04000 PCB-N0940C-SEC SECONDARYASSEMBLY

CAPACITORS

C101,C102 150F-104K-5-II CC 50V 0.1µF 10% RL 5x5
C103-C107 153I-104J-5-NMN CM 63V 0.1µF RL (7.5X7)

RESISTORS

R101,R102 4718-R22J-2 RMF 1W 0.22R 5% AT

SW ASSEMBLY

PC BOARD

05000 PCB-N0940C-SW PCB ASSY MAIN SW N094XC

CAPACITOR

C854 8910-0091-0 CC 400V 0.01µF +-20% RL

SWITCH

M107 5200-3665-0 POWER SWITCH TV5

KEYBOARD ASSEMBLY

PC BOARD

06000 *AH PCB N0940C-KEY KEYBOARD ASSEMBLY
06000 *C PCB-N0941C-KEY KEYBOARD ASSEMBLY

CAPACITORS

C201 157B-107M-5-KMK CE 6.3V 100µ F 20% RL
C202 150F-103K-2-FC CC 50V 0.01µF 10% AT 3.5
C203 157B-107M-5-KMK CE 6.3V 100µ F 20% RL
C204 150F-103K-2-FC CC 50V 0.01µF 10% AT 3.5
C205 150F-104K-2-FC CC 50V 0.1µF 10% AT
C206 157D-106M-5-IUK CE 16V 10µF 20% RL 5x11
C208 157D-476M-5-IMK CE 16V 47µF 20% RL
C212 150F-104K-2-FC CC 50V 0.1µF 10% AT

Reference No. Part No. Description

29

DIODES

D201 4804-1480-C DIODE 1N4148 ATS
D202 4804-0040-1 DIODE 1N4004 AL
D203 4837-5B61-2 DZ 1/2W 5.45-5.73 ROHM
D204,D209,D210 4804-1480-C DIODE 1N4148 ATS
D211 4837-5B11-2 DZ 1/2W 4.94~5.20V ROHM
D212 4804-1480-C DIODE 1N4148 ATS

COIL

L201 1801-220K-M COIL 22µH 10% AL BL7

INFRA-RED SENSOR

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

VFD

M220 2460-1960-0 VFD SAMSUNG HNA-10SM12

SWITCH

M201-M203, M205-M209 5200-3538-0 SWITCH, TACT SKHHBY 7MM
M210-M211, M213-M217

RESISTORS

R201-R205 4701-821J-C RCF 1/8W 820R 5% ATS
R207, R208 4701-182J-C RCF 1/8W 1.8K 5% ATS
R210, R211 4701-222J-C RCF 1/8W 2.2K 5% ATS
R213, R214 4701-472J-C RCF 1/8W 4.7K 5% ATS
R215 4701-821J-C RCF 1/8W 820R 5% ATS
R216 4701-682J-C RCF 1/8W 6.8K 5% ATS
R218, R219 4701-102J-C RCF 1/8W 1K 5% ATS
R220, R221 4701-471J-C RCF 1/8W 470R 5% ATS
R222 4701-473J-C RCF 1/8W 47K 5% ATS
R230, R231 4701-223J-C RCF 1/8W 22K 5% ATS
R232-R240 4701-103J-C RCF 1/8W 10K 5% ATS
R241-R246 4701-104J-C RCF 1/8W 100K 5% ATS
R247, R248 4701-103J-C RCF 1/8W 10K 5% ATS
R252-R256 4701-103J-C RCF 1/8W 10K 5% ATS
R257, R259 4701-223J-C RCF 1/8W 22K 5% ATS
R260 4701-471J-C RCF 1/8W 470R 5% ATS
R263-R274 4701-104J-C RCF 1/8W 100K 5% ATS
R281-R284 4701-103J-C RCF 1/8W 10K 5% ATS
R285, R286 4701-223J-C RCF 1/8W 22K 5% ATS
R291-R293 4701-103J-C RCF 1/8W 10K 5% ATS
R294 4701-472J-C RCF 1/8W 4.7K 5% ATS

ICs

U201 3131-9750-1 IC LC866448B 8 BIT
U202 3131-7250-0 IC 24C08 8K EEPROM

PRIMARY ASSEMBLY

PC BOARD

07000 PCB-N0941C-PRI PRIMARY ASSEMBLY

PSU ASSEMBLY

PC BOARD

08000 *AH PCB-N0940C-PSU POWER SUPPLYASSEMBLY
08000 *C PCB-N0941C-PSU POWER SUPPLY ASSEMBLY

CAPACITORS

C106 8910-0091-0 CC 400V 0.01µF +-20% RL
C109 150F-223Z-5-UG CC 50V 0.022µF +80/-20%

Reference No. Part No. Description

C110 157E-227M-5-PU CE 25V 220µF 20% RL

DIODES

D101 4804-1480-C DIODE 1N4148 ATS
D102-D105 4804-0040-1 DIODE 1N4004 AL

RELAY

M103 4500-0890-0 RELAY 12VDC,250VAC,10A

FUSE

M151 *AH 5120-0037-0 FU T3.15A 250V UL/CSA 5x20MM
M152 *C 5100-2530-1B T2.5A/250V IEC
M154 *AH 5120-0052-0 FUSE T1.6A 250V 5x20MM UL/CSA

TRANSISTOR

Q101 485C-123J-5 TR DTC123JSA ROHM

RESISTOR

R103 *AH

4717-335J-2-S RMF 1/2W 3.3M 5% AT

R104 4707-8R2J-2 RCF 1/2W 8.2R 5% AT

TRANSFORMER

T902 1806-2311-0 EI-35 TRANSFORMER 12V/AC

SPEAKER ASSEMBLY

PC BOARD

09000 *AH PCB-N0940C-SPK SPEAKER ASSEMBLY
09000 *C PCB-N0941C-SPK SPEAKER ASSEMBLY

CAPACITORS

C857, C858 150F-102K-5-IF CC 50V 1000pF 10% RL 5x3
C860, C861 150F-102K-5-IF CC 50V 1000pF 10% RL 5x3

TUNER

ASSEMBLY

PC BOARD

10000 *AH PCB-N0940C-TUN TUNER ASSEMBLY
10000 *C PCB-N0941C-TUN TUNER ASSEMBLY

CAPACITORS

C901 *C 150F-223K-2-FD CC 50V 0.022µF 10% AT
C902-C903 150F-223K-2-FD CC 50V 0.022µF 10% AT
C904 157D-106M-5-GM CE 16V 10µ F 20% RL 4x7
C906 157D-107M-5-KUK CE 16V 100µF 20% RL
C911 150F-200J-2-FC CC 50V 20pF 5% AT 3.5x2
C912, C913 150F-102K-2-FC CC 50V 1000pF 10% AT 3.5
C914, C915 150F-101K-2-FC CC 50V 100pF 10% AT 3.5x
C916 150F-331K-2-FC CC 50V 330pF 10% AT 3.5x
C924, C925 15CH-200J-5-GG CTC 0/60 20pF 5% RL4x4
C926 153F-333J-5-NLM CM 50V 0.033µF 5% RL 7.5
C927 157F-225M-5-GM CE 50V 2.2µ F 20% RL 4x7
C928 157D-106M-5-GM CE 16V 10µ F 20% RL 4x7
C929 157F-224M-5-GM CE 50V 0.22µ F 20% RL 4x7
C930 150F-223K-2-FD CC 50V 0.022µF 10% AT
C931 157B-107M-5-KM CE 6.3V 100µF 20% RL 6x7
C932, C941 150F-223K-2-FD CC 50V 0.022µF 10% AT
C942 157D-107M-5-KUK CE 16V 100µF 20% RL
C943 157F-225M-5-GM CE 50V 2.2µ F 20% RL 4x7
C944 157F-475M-5-GM CE 50V 4.7µ F 20% RL 4x7
C945 150F-101K-2-FC CC 50V 100pF 10% AT 3.5x

30

Reference No. Part No. Description

31

C946 157F-105M-5-GM CE 50V 1µ F 20% RL 4x7
C947 157F-474M-5-GM CE 50V 0.47µ F 20% RL 4x7
C948 157F-105M-5-GM CE 50V 1µ F 20% RL 4x7
C949, C950 150F-223K-2-FD CC 50V 0.022µF 10% AT
C951 157F-225M-5-GM CE 50V 2.2µ F 20% RL 4x7
C953, C954 150D-272K-2-FC CC 16V 2700pF 10% AT
C959, C960 157D-226M-5-GM CE 16V 22µ F 20% RL 4x7
C961, C962 *AH 153F-332J-5-KW CM 50V 3300pF 5% RL 6x12
C961, C962 *C 153F-182K-5-KW CM 50V 1800pF 10% RL 6x1
C963, C964 157D-226M-5-GM CE 16V 22µ F 20% RL 4x7
C965 150D-272K-2-FC CC 16V 2700pF 10% AT
C967 157D-474M-5-II CE 16V 0.47µF 20% RL 5x5
C968 150F-223K-2-FD CC 50V 0.022µF 10% AT
C969 157D-476M-5-IM CE 16V 47µ F 20% RL 5x7
C970 *AH 153F-333J-5-NLM CM 50V 0.033µF 5% RL 7.5x6.5
C970 *C 150F-223K-2-FD CC 50V 0.022µF 10% AT
C971 15CH-080D-5-GG CTC 0/60 8pF 0.5pF RL
C973 153F-473J-5-NLM CM 50V 0.047µF 5% RL 7.5
C974 150F-223K-2-FD CC 50V 0.022µF 10% AT
C975 157D-106M-5-GM CE 16V 10µ F 20% RL 4x7
C976 150F-223K-2-FD CC 50V 0.022µF 10% AT
C977 157F-225M-5-GM CE 50V 2.2µ F 20% RL 4x7
C978 150F-223K-2-FD CC 50V 0.022µF 10% AT
C979 157D-226M-5-GM CE 16V 22µ F 20% RL 4x7
C980 153F-473J-5-NLM CM 50V 0.047µF 5% RL 7.5
C981 150F-223K-2-FD CC 50V 0.022µF 10% AT
C982 150F-101K-2-FC CC 50V 100pF 10% AT 3.5x
C985 150F-561K-2-FC CC 50V 560pF 10% AT 3.5x
C986 157B-107M-5-KM CE 6.3V 100µF 20% RL 6x7
C987 150F-223K-2-FD CC 50V 0.022µF 10% AT
C988, C989 15CH-300J-5-IG CTC 0/60 30pF 5% RL 5x4
C990 157B-107M-5-KM CE 6.3V 100µF 20% RL 6x7
C991 150F-102K-2-FC CC 50V 1000pF 10% AT 3.5
C992 150F-103K-2-FC CC 50V 0.01µF 10% AT 3.5

DIODES

D901 4837-4C20-2 DZ 1/2W 5.0-5.2V AT
D902 4837-7C20-2 DZ 1/2W 9.1-9.5V AT
D980 4804-1480-C DIODE 1N4148 ATS

COILS

L901 1801-220K-M COIL 22µH 10% AL BL7
L903, L904 5600-3386-S COIL MPX LPF NMC-4085
L905 1801-101K-M COIL 100µH 10%
L941 5600-3396-S COIL FM DET-1 10.7MHZ
L942 5600-3406-S COIL FM DET-2 10.7MHZ
L972 5600-3416-S COIL AM IFT NMIF-4062
L985 1801-101K-M COIL 100µH 10%
M971 5600-3280-G COIL MW RF BLOCK
R912 1801-101K-M COIL 100µH 10%

CERAMIC FILTERS

M902, M904 2701-0010-1 CF10.7 +-30 SFE10.7MA5-A
M903 *C 2701-0010-1 CF10.7 +-30 SFE10.7MA5-A
M911 2701-0680-0 CF 450 +-1 SFZ450JL3

CRYSTALS

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

Reference No. Part No. Description

TUNER

M986 1300-0726-0 TUNER ENV172D3G1

TRANSISTORS

Q901 *C 485C-945P-5 TR 2SC945P HFE 200-400
Q902 4851-9230-5 TR 2SC1923-0 HFE 70-140
Q903 485A-114E-5 TR DTA114ESA ROHM
Q922, Q923 4860-1590-5 TR 2SC1740S
Q942 4860-1590-5 TR 2SC1740S
Q943, Q944 4860-8120-0 TR 2SD 1468 S
Q945, Q980, Q981 485A-114E-5 TR DTA114ESA ROHM
Q982 4853-63BL-5 TR N-JFET 2SK-363BL
Q983 485C-114E-5 TR DTC114ES

RESISTORS

R901 *AH 4701-332J-C RCF 1/8W 3.3K 5% ATS
R901 *C 4701-333J-C RCF 1/8W 33K 5% ATS
R902 4701-220J-C RCF 1/8W 22R 5% ATS
R903 *AH 4701-102J-C RCF 1/8W 1K 5% ATS
R903 *C 4701-123J-C RCF 1/8W 12K 5% ATS
R904 *C 4701-331J-C RCF 1/8W 330R 5% ATS
R905 *C 4701-681J-C RCF 1/8W 680R 5% ATS
R906 4701-103J-C RCF 1/8W 10K 5% ATS
R907 *C 4701-332J-C RCF 1/8W 3.3K 5% ATS
R908 *C 4701-471J-C RCF 1/8W 470R 5% ATS
R909, R910 4701-331J-C RCF 1/8W 330R 5% ATS
R911 4701-101J-C RCF 1/8W 100R 5% ATS
R913 4701-330J-C RCF 1/8W 33R 5% ATS
R915 4701-103J-C RCF 1/8W 10K 5% ATS
R916 4701-102J-C RCF 1/8W 1K 5% ATS
R918 4701-472J-C RCF 1/8W 4.7K 5% ATS
R919 4701-102J-C RCF 1/8W 1K 5% ATS
R920-R924 4701-102J-C RCF 1/8W 1K 5% ATS
R925, R926 4701-820J-C RCF 1/8W 82R 5% ATS
R927 4701-103J-C RCF 1/8W 10K 5% ATS
R928 4701-221J-C RCF 1/8W 220R 5% ATS
R929 4701-332J-C RCF 1/8W 3.3K 5% ATS
R931 4701-220J-C RCF 1/8W 22R 5% ATS
R942 4701-472J-C RCF 1/8W 4.7K 5% ATS
R943 4701-822J-C RCF 1/8W 8.2K 5% ATS
R945 4701-392J-C RCF 1/8W 3.9K 5% ATS
R946 4701-332J-C RCF 1/8W 3.3K 5% ATS
R947,R948 4701-103J-C RCF 1/8W 10K 5% ATS
R949 4701-332J-C RCF 1/8W 3.3K 5% ATS
R950 4701-684J-C RCF 1/8W 680K 5% ATS
R951 4701-102J-C RCF 1/8W 1K 5% ATS
R952, R953 4701-223J-C RCF 1/8W 22K 5% ATS
R954 4701-103J-C RCF 1/8W 10K 5% ATS
R955 4701-220J-C RCF 1/8W 22R 5% ATS
R957, R958 *AH 4701-332J-C RCF 1/8W 3.3K 5% ATS
R957, R958 *C 4701-272J-C RCF 1/8W 2.7K 5% ATS
R959, R960 *AH 4701-393J-C RCF 1/8W 39K 5% ATS
R959, R960 *C 4701-124J-C RCF 1/8W 120K 5% ATS
R961, R962 4701-222J-C RCF 1/8W 2.2K 5% ATS
R963, R964 4701-104J-C RCF 1/8W 100K 5% ATS
R968 4701-102J-C RCF 1/8W 1K 5% ATS
R969 4701-104J-C RCF 1/8W 100K 5% ATS
R972 4701-103J-C RCF 1/8W 10K 5% ATS
R973 4701-183J-C RCF 1/8W 18K 5% ATS

32

Reference No. Part No. Description

33

R974 4701-104J-C RCF 1/8W 100K 5% ATS
R975 *AH 4701-223J-C RCF 1/8W 22K 5% ATS
R975 *C 4701-513J-C RCF 1/8W 51K 5% ATS
R981 4701-101J-C RCF 1/8W 100R 5% ATS
R983 4701-104J-C RCF 1/8W 100K 5% ATS
R984 4701-105J-C RCF 1/8W 1M 5% ATS
R985, R986 4701-102J-C RCF 1/8W 1K 5% ATS
R987 4701-102J-C RCF 1/8W 1K 5% ATS
R988 4701-471J-C RCF 1/8W 470R 5% ATS
R989 4701-103J-C RCF 1/8W 10K 5% ATS
R996 4701-512J-C RCF 1/8W 5.1K 5% ATS

SEMIFIXED VARIABLE
RESISTORS

R941 4756-2036-3-15 SVR B20K H3 NVZ6TL1 6.3x6.8 HDK
R956 4756-1036-3-06 SVR 10K H3 7x7.6 RH0615C
R991 4756-1046-3-17 SVR B100K H3 NVZ6TL1 6.3x6.8 HDK

ICs

U901 3130-8180-0 IC LA1837 AM/FM IF
U902 3131-9040-0 IC LC72723M RDS
U903 3131-3760-0 IC LC7218 PLL FREQ

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, RWR-Wirewound Metal Oxide Film.

34

EXPLODED VIEW

1556

0162

0161

0130

0155

0152

0130

0130

0130

0134

0146

0145

0140

0140

0142

0130

0130

0130

0134

0128

0124

0120

J206C

0158

0301

0200

0125

0126

0122

0122

0123

0122

0117

0121

0116

0111

0110

0109

0113

0112

0107

0105

0104

0103

0108

0142

T901

0119

0115

0114

0118

0130

0130

0130

0136

0136

0135

0135

0129

0132

0149

0127

0135

0131

0101

0102

0106

35

ITEM Part No. Description Qty

0101 *AH 1403-7071-0 REAR PANEL C730 (AH) 1
0101 *C 1403-7072-0 REAR PANEL C730 (C) 1
0102 1403-7080-0 TOP COVER C730 1
0103 1403-7090-0 SUB-FASCIAC730 1
0104 1403-7100-0 BOTTOM COVER C730 1
0105 1403-7110-0 BOTTOM CHASSIS C730 1
0106 1466-8200-0 FASCIAC730 1
0107 4154-2091-0 INPUT BUTTON LOZENGE C730 1
0108 3716-4315-0 WINDOW LENS C730 W/SS 1
0109 2444-1301-1 BUTTON RACKER 1
0110 4154-0091-0 BEZEL RACKER 1
0111 2444-2101-0 INPUT BUTTON 3
0112 2444-1201-0 BUTTON TRIO 2
0113 4154-0031-0 BEZEL TRIO 3
0114 4152-4631-0 RUBBER FOOT (522) 14MM HIGH 4
0115 4152-4641-0 CUSHION FOOT (522) 4
0116 4152-4331-0 POWER BUTTON BEZEL 1
0117 3714-5706-0 LED LENS (412) CLEAR SAN 1
0118 4152-3851-0 SQ. STRAIN RELIEF BUSHING 1
0119 *AH 7009-3100-2 AC CORD 18AWGX2 1
0119 *C 7009-3100-0 AC CORD (SEMKO) 1
0120 4152-0451-0 L-BRACKET 1
0121 2442-1000-0 POWER BUTTON 1
0122 2445-0201-0 TONE KNOB SHORT C730 3
0123 2445-0301-0 TONE DEFEAT BUTTON 1
0124 2445-0401-0 VOLUME KNOB SHORT C730 1
0125 5400-9171-0 FRONT HEATSINK C730 1
0126 5400-9181-0 REAR HEATSINK C730 1
0127 2600-4008-0973 FLAT WASHER M4X0.8X9.7 BZ 4
0128 2607-4010-0703 SPRING WASHER M4X1X7 BZ 4
0129 2904-4010-3000 SCREW M4X10 (BLK) 4
0130 2954-3008-3000 T3X8MM SELF TAPPING 42
0131 2842-3367-0 METAL WASHER ID=3.3 OD=6.7 4
0132 2900-4006-3010 M4X0.5PX6MM W/FLAT WASHER 4
0134 2954-3006-0000 3X6MM B-TITE (YEL.ZN) 1
0135 2954-3008-0000 TAPPING 3X8MM B-TITE (YEL.ZN) 8
0136 2954-3006-3000 3X6MM B-TITE (BLK.ZN) 8
0140 2954-2606-3000 SCREW BH 2.6X6 BLACK 11
0142 2954-2608-3000 SCREW BT 2.6X8 BLACK ZINC 11
0145 2904-3006-0000 SCREW M3X6 4
0146 2904-3008-0000 M3X8MM BINDING HEAD (YEL.ZN) 1
0149 2640-4030-0703 M4 NUT (BLK) 4
0152 4154-2191-0 TONE CONTROL LOZENGE, N0940C 1
0155 2900-3010-3030 SCREW M3X10 W/S&F WASHER (BLK) 4
0158 5400-0831-0 HEATSINK (214) 20MM-HIGH HOLE 4
0161 2601-3004-0801 FIBRE WASHER M3X0.4X8 NA. 7
0162 2640-C020-1434 HEXAGON NUT M12X2.0X14.3 NI 1

EXPLODED VIEW PARTS LIST

0200 *AH 2113-1662-0 AC OUTLET 2 PIN 15A 125VAC (AH) 1
0301 3100-5101-0 PC SHEET 50X7X0.25 1
1556 3100-3211-0 SILICON SHEET (26X20MM) 4
J206C 7010-1660-0 FLEXIBLE CABLE 35P L220 P1.25 1
T901 1806-3546-0 X'FORMER I/P 120/230V N094XC 1

36

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.

ITEM Part No. Description Qty

37

PACKING DIAGRAM

ITEM PART NO. DESCRIPTION Q’TY

36 1490-3773-0 POLYFORM ENDCAP 2
37 1497-1332-1 UNIT POLYBAG 1
38 1497-1442-0 FASCIA COVER 1
39 4060-0530-0 BATTERIES 2
40 2107-0661-1 300 OHM T ANTENNA 1
41 8901-2950-0 REMOTE CONTROL HANDSET 1
42 2103-6101-0 *AH RF CONNECTOR PLUG 1
42 2103-6201-0 *C RF CONNECTOR PLUG 1
43 4301-4869-1 INSTRUCTION MANUAL C730 1
44 1497-1062-0 MANUAL POLYBAG 1
45 1480-1900-1 CARTON BOX 1
46 2113-1155-0 AM LOOP ANTENNA 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.

36

37

43

45

44

38

39

40

36

41

42

46

SERVICE MANUAL

© NAD 2001

C 730

STEREO

RECEIVER

NAD ELECTRONICS INTERNATIONAL

TORONTO, CANADA