Cameron DAS-3037 Service manual

NE- 567 (5W)

Cameron DAS-3037

MICRO HI-FI SYSTEM

NE-567 (PLL+MP3+USB)

MODEL:NE-567

CAUTION: Before servicing the chassis, read the " important service safety information" section on page 2 of this manual.

PORTABLERADIO CASSETTE WITH CD&MP3 PLAYER

SPECIFICATIONS CONTENTS

AM/FM TUNER SECTION

ANTENNASYSTEM

TUNING RANGE

AUDIO SECTION SPEAKER IMPEDANCE : 4OHM

GENERAL :5Wx2 POWER INPUT : ~AC 230V-50Hz

AC POWER CONSUMPTION MAIN DIM : 152(L)x237.5(W)x 218.5(H)mm

DIM : 1 (L)x (W)x (H)mmSPEAKER

WEIGHT : Kg5.6

AM: EXTERNALANTENNALOOP FM:AERIALPIGTAIL ANTENNA AM: 522 - 1620 kHz

FM:87.5-108MHz

40 185 218.5

IMPORTANT SERVICE SAFETY INFORMATION---2 DISASSEMBLY INSTRUCTIONS--------------------- 3 ADJUSTMENTLOCATIONS----------------------------4 ALIGNMENTPROCEDURES-----------------------5 - 11 VOLTAGECHARTS---------------------------------12-14 IC BLOCK DIAGRAMS-----------------------------15 - 19 BLOCK DIAGRAM---------------------------------------20 WIRING DIAGRAM-------------------------------------21 SCHEMATICDIAGRAMS-------------------------22-28 PRINTED CIRCUIT BOARDS---------------------29 - 30 EXPLODED VIEW/PARTSLIST(CABINET)---31-33

SERVICE PUBLICATION

NOTE: All the specifications and features are subject to change without notice.

7th Floor, Chung Mei Centre, 15A Hing Yip Street, Kwun Tong, Kowloon, Hong Kong. Tel:(852)2790 3392 (12 Line), Fax: (852)2341 8874 Email Address: info@nelson.com.hk

IMPORTANT SERVICE SAFETY INFORMATION

1. SAFETY PRECAUTIONS Before returning a unit to the customer, always make a safety check of the entire unit, including, but not limited to the following items: a. Be sure that no built-in protective devices are defective

and/or have been defeated during servicing.

(1)protective shields are provided to protect both the

technician and the customer. Correctly replace all missing protective shields including any removed for servicing convenience.

(2)when reinstalling the chassis and/or other assemblies in

the cabinet, be sure to put back in place all protective devices, including , but not limited to , nonmetallic control knobs, insulating fishpapers. adjustment and compartment covers/shields and isolating resistor/ capacitor networks. Do not operate this or permit it to be operated Without all protective devices correctly installed and functioning .

b. Be sure that there are no cabinet openings through which

an adult or child might be able to insert their fingers and contact a hazardous voltage. Such openings include, but are not limited to, excessively wide cabinet ventilation slots, and an improperly fitted and/or incorrectly secured cabinet back cover.

c. Leakage current hot check - with the unit completely

reassembled ,plug the AC line cord directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with American National standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories(UL) 1410 (50.7). WITH THE UNIT AC switch first in the ON position And then in the OFF position, measure from a known earth ground (metal water pipe, conduit, etc.) To all exposed metal parts of the Unit (antennas, handle bracket, metal cabinet, screw heads , metallic overlays, control shaft, etc.) Especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milliamp, reverse the unit power cord plug in the outlet and repeat test . ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HERENING INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED

RETURNING THE

UNIT TO THE CUSTOMER.

AC LEAKAGETEST

DEVICE UNDER TEST

2-WIRE CORD ALSO TESTWITH PLUG REVERSED (USING ACADAPTER PLUG AS REQUIRED)

TEST ALL EXPOSED METAL SURFACES

(READING SHOULD NOTBEABOVE

0.5mA)

LEAKAGE CURRENT TESTER

EARTH GROUND

d. Insulation resistance test cold check:

unplug the power supply cord and connect a jumper wire between the two prongs of the plug . Turn on the power switch of the unit. Measure the resistance with an ohmmeter between jumpered AC PLUG AND EACH Exposed metallic cabinet part on the unit, such as screw heads, antenna, control shafts, handle brackets, etc. When the exposed metallic part has a return path to the chassis , the reading should be between 1 and 5.2 megohms. When there is no return path to the chassis, the reading must be infinite If it is not within the limits specified, there is the possibility of a shock hazard, and the unit must be repaired and rechecked before it is returned to the customer.

ANTENNA TERMINAL

EXPOSED METAL PART

OHMMETER

2. PRODUCT SAFETY NOTICE some electrical and mechanical parts have special safety related characteristics which are often not evident from visual inspection. Nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage , wattage, etc. Parts that have special safety characteristics are identified by a on schematic and parts list. Use of a substitute replacement that dose not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. Product safety is under review continuously and new instructions are issued whenever Appropriate.

3. Servicing precautions CAUTION: before servicing the unit covered by this service by this service manual and its supplements. Read and follow the SAFETY PRECAUTIONS on this page. NOTE: if unforeseen circumstances create a conflict between the following servicing precautions and any of the Safety precautions, always follow the safety precautions. Remember: safety first. General servicing precautions. a. Always unplug the unit s AC power cord from the AC power source Before: (1)removing or reinstalling any component, circuit board,

module or any other unit assembly.

(2)disconnecting or reconnecting any unit electrical plug or

other Electrical connection.

(3)connecting a test substitute in parallel with an electrical

capacitor caution: a wrong part substitution or incorrect polarity installation Of electrolytic capacitors may result in an explosion hazard

b. Do not defeat any plug/socket b+ voltage interlocks with

which the unit covered by this service manual might be equipped.

c. Do not apply AC power to this unit and/or any its electrical

assemblies unless all solid-state device heat sinks are correctly installed.

d. Always connect a test unit instrument s ground lead to

the unit s chassis ground before connecting the test instrument s positive lead always remove the test instrument s ground lead last.

4. Laser precautions Warning! (1)When servicing.(Incase it isnecessary to confirmlaser

Beam emission ) besure not toplace your eyesany closer than 1or 30cm from thesurface of the objective

lens on the optical pickup block. HANDLING THE LASERPICKUP ( 2)Laser Diodesare Extremely Susceptibleto damage from

static electricity even ifa static dischargedies not ruin

the diode, itcan shorten its lifeor cause itto work

improperly.When replacing the pickup, usea conductive

maton the floorand desk andwear a wrist band

connected to groundthrough a 1Mohm resistor

to protect the laserdiode from staticdamage. If thelens

should get dusty, blow off thedust carefully fromthe

object. (3)There areno adjustable partsin the pickupassembly. If it

is defective, replace the wholepickup assembly.

CAUTION: USE OF CONTROLS, ADJUSTMENTS OR

PERFORMANCE OF PROCEDURES HEREIN MAY

DANGER: IF INTERLOCK FAILS OR IS DEFEATED, THE LASER

RESULT IN HAZARDOUS RADIATION

LIGHT IS ABLE TO FUNCTION. THE LASER IS INVISIBLE, AVOID DIRECT EXPOSURE TO BEAM.

EXPOSURE.

MODEL NE -567

DISASSEMBLY INSTRUCTIONS

3X10KA 3X10KA

3X10PA3X10PA

MODEL NE -567

ADJUSTMENTLOCATIONS

MODEL NE -567

CASSETTE SECTION NE-566MP3 DATE:12-ARP-2004

STEP ITEM TEST EQUIPMENT TEST TAPE ADJUST REMARK

1 MOTOR SPEED WOW/FLUTTER METER MTT-111N (1)CHECK MOTOR

ADJ. & WITH FREQ. COUNTER (3KHz) SPEED TO 3KHz +3%-2% TAPE

WOW/FLUTTER CONNECT TO SPEAKER POSITION

CHECK OR DUMMY LOAD

2 HEAD AZIMUTH AC VOLT METER MTT-113N ADJUST THE R/P HEAD TAPE

OSCILLOSCOPE (6.3KHz) SCREW FOR MAX POSITION

CONNECT TO SPEAKER OUTPUT

OR DUMMY LOAD

3 PLAYBACK SAME AS ABOVE MTT-257 CHECK FREQ TAPE

ADJUSTMENTLOCATIONS

FREQ RESPONSE TO MEET POSITION

RESPONSE SPECIFICATION

4 RECORDING AC VOLT METER BLANK RECORED & TAPE

OCILLOSCOPE TAPE PLAYBACK FORM FM POSITION

CONNECT TO SPEAKER SIGNA TO MEET

OR DUMMY LOAD SPECIFICATIONS: REC

FM SIGNAL GEN LEVEL, DISTORTION &

CONNECT TO ANT. FREQ. RESPONSE

INPUT 1mV,40KHz DEV.

MODEL NE -567

MODEL:NE-566MP3

FM AND AM RF ALIGNMENT CHART ( IF ) Date: 12-Apr-04

Step item Input Circuit Output Circuit Tuner Adj - Adjustment

Unless otherwise specified set switches as follows: FM Function: FM Adjust generator frequency to a center of the FM band where no FM broadcast exists

1 Adjustment sweep output IF-OUT terminal to end T104 symmetrical S-curve

2 FM Headphone jack or 87.5 MHz L105 Adjust L103 for max output

3 Tracking (1) Terminal 90.1 MHz, speaker terminal MONO best waveform

4 Tracking (2) 106.1 MHz, 1 kHz Headphone jack or 106.1 MHz CT101 Same as above.

5 Repeat steps 3 and 4.

1 Adjustment antenna to output ter- genescope to detector end T101 with symmetrical 450 kHz.

2 MW Headphone jack or 522 kHz T102 Adjust L135 for max output

3 Tracking (1) 612 kHz 400 kHz, Headphone jack or 612 kHz T103 Adjust for max.output and

4 Tracking (2) 1404 kHz 400 kHz, Headphone jack or 1404 kHz CT102 Same as above.

5 Repeat steps 3 and 4.

ALIGNMENT PROCEDURES

Setup Setup setting Point

IF Connect FM IF Connect Co19 and GND FM in band Adjust for straight and

terminal to IC102 IF sweep input terminal with max.amplitude.

Band setup speaker terminal 108MHz Done

FM SG ANT. Headphone jack or 90.1 MHZ L104 Adjust for max.output and

1kHz, +-22.5kHz dev

+-22.5 MHz dev speaker terminal

IF Connect standard loop Connect input terminal MW in band Adjust tor max. amplitude

minal of genescope output

Band speaker terminal 1620 kHz CT103 Adjust CT133 for max output

3% mod speaker terminal best waveform

3% mod speaker terminal

TAPE SECTION HEAD ADJUSTMENT (AZIMUTH) 10 kHz test tape (example:MTT-114N) must be used for this adjustment. Connect to VTVM or oscilloscope to the headphone JCK or speaker terminal Press the play button. Adjust the azimuth by using a screw driver to maintain the maximum L & R output voltage. Adjust tape. Please secure the azimuth position by using locking paint.

RECODING BIAS OSCILLATOR FREQUENCY ADJUSTMENT Connect the frequency counter to of R601 two ends. Press REC button of tape . Adjust T201 obtain 60 kHz +-100 HZ

MODEL NE -567

ALIGNMENT PROCEDURES

NELSON ELECTRONICS LTD

FM RECEIVER PERFORMANCE DATA

MODEL: NE-567USB (5W) Date: 4-Apr-2005

Band: FM

Supply Voltage: AC 230 V Measured By: Wang Shao Jie

Standard Output: 50 mw

Dummy Load: 4 ohm Approved By:

Modulation: 1 KHz 22.5 KHz Dev.

EQ or Tone at Flat Place Bass OFF Place

Measuring Items Unite Norm Limit Sample1 Sample2

Frequency Range Low MHz 87.5 +/-0.3

High MHz 108 +/-0.3

IF Frequency MHz 10.7 +/-0.2

30db Quieting 90.1 MHz db 18 26

Sensitivity 98.1 MHz db 18 26

106.1 MHz db 18 26

Auto Locked 90.1 MHz db 26 32

Sensitivity 98.1 MHz db 26 32

106.1 MHz db 26 32

ACA +300 KHz db 20 15

( 2-Signal ) -300 KHz db 20 15

Image Rejection AT 106.1 MHz db 22 16

IF Rejection AT 90.1 MHz db 50 40

-3db Limiting Sens . 1mv I/P db 18 26

AM Suppression 1mv I/P db 35 30

S/N (1mv input Mono db 50 45

W/A-Fliter) Stereo db 35 30

Stereo Sens db 20 26

Stereo Lamp On Sens. db 20 26

Separation R/L db 25 20

Freq.Response-3db Low Hz 80 ≦100

(W/50uS Pre-empha High KHz 10 ≧8

Modulation Hum 1 mv I/P db 40 35

Hum & Noise(min.vol.) mv 1 3

Output (10% Dist) (MOD=40KHz) mW 4500 4000

Total Harmonic Distortion 1 mv I/P % 1 3

OSC Drop Out 1 mv I/P V

Current No signal mA

Consumption Max mA

MODEL NE -567

Modulati

30%

6db

High

KHz2.4

≧2.0

ALIGNMENT PROCEDURES

NELSON ELECTRONICS LTD

MW RECEIVER PERFORMANCE DATA

MODEL: NE-567USB (5W) Date: 4-Apr-2005

Band: MW

Supply Voltage: AC 230 V Measured By: Wang Shao Jie

Standard Output: 50 mw

Dummy Load: 4 Ohm Approved By:

on: 1 KHz

EQ or Tone at Flat Place Bass OFF Place

Measuring Items Unite Norm Limit Sample1 Sample2

Frequency Range Low KHz 522 +/-10

High KHz 1620 +/-10

IF Frequency KHz 450 +/-2

20db Quieting 612 KHz dB/M 60 66

Sensitivity 999 KHz dB/M 60 66

1404 KHz dB/M 60 66

Auto Locked 612 KHz dB/M 66 70

Sensitivity 999 KHz dB/M 66 70

1404 KHz dB/M 66 70

S/N 5mv/M dB 35 30

ACA +9 KHz dB 18 12

-9 KHz dB 18 12

Band Width-6dB +Side KHz 3 10

-Side KHz 3 10

Image Rejection AT 1404 KHz dB 35 30

IF Rejection AT 612 KHz dB 50 40

Spuerious Response 4-10MHz dB 40 35

10-30MHz dB 50 45

AGC FOM-10db 100mv/M dB 45 35

Audio Freq. Low Hz 80 ≦100

esponse-

Modulation Hum 100 mv/M dB 38 32

Hum (Volume At Min) mv 1 3

Output (10% Dist) (MOD=80%) mW 4500 4000

Total Harmonic Distortion 5mv/

OSC Drop Out 5mv/M V

Current No signal mA

Consumption Max mA

%2 4

MODEL NE -567

UniteN

%+3/-2

WOW & Fl

0.15

0.35Pl

125

/-3+/-6

dB0

/-3+/-6P/

S/N (1

dBAC O

dB45

(AC O

)

10%

4500

4000

10d

%12

dB4030Ch

dB40

dB4030Ch

10d

dB1

No Si

APl

CASSETTER REC/PLAY PERFORMANCE DATA

UniteN

6PA

dB3833ALC

20db

90%

20db

90%

100

/-3+/-6

20dB)

dB0+/-3

/-3+/-6

S/N

1mv/in

dB38

10d

%510

dB40

)

dB40

10d

dB0

20d

/-2+/-4

(32

)

W2015

ALIGNMENT PROCEDURES

NELSON ELECTRONICS LT

CASSETTE PLAYBACK PERFORMANCE DATA

MODEL: NE-567USB (5W) Date: 4-A

Supply Voltage: AC 230 V Standard Output: 50 mw Measured By: Wang Shao Ji Dummy Load: 4 Ohm 0DB=1V Approved By: EQ or Tone at Flat Place Bass OFF Place

Tape Speed 4.76cm/sec.1

Measur

Tape Speed Eno

utte

ay Freq Response at

K odB) DC Opetation

Hum & Noise Min Vol mv

ptetaion

THD Output THD Track Crossta

annel Separatio

annel Balance -

gnal Current Min. Vol. Blank Tap m

Max Output Max. Vo

ay Torque g/cm F.F Torque g Rew Torque g T

me for Play Min T

me for F.F T

me for Rew

I n

ng Items

at 3 KHz at 3 KHz

Hz at 1 KHz at 10 KHz

ptetaio

Max Vol mv

KHz odB) RM

KHz -

R-L L-R

B 1KH

orm Limit

B+

cm cm

ec ec

ample

r-2005

ample

Measuring Items Rec Blas System AC KH z Erasing System Magne Erasing Ratio

Compresion Time for

tansatding up for Recovery t R

P Frep Responseat

REC CD(-

me for -

at 1 KHz at 10 KHz

R/P

at at

t Mic

B+

B+ B

FM R/P THD at R/P Channal Separa

KHB 0dB

Record Level Tape = -

D 1KHz Radio FM 1KHz 12.5KH Remote Control Sensitivit Headphone Out Level Bass Tone Actionat Hz

B 1KH L-R R-L

ohm

B+ B+

orm Limit

ample

MODEL NE -567

dB00

ALIGNMENT PROCEDURES

NELSON ELECTRONICS LTD

CD PLAYBACK PERFORMANCE DATA

MODEL: NE-567USB (5W) Date: 4-Apr-2005

Supply Voltage: AC 230 V

Standard Output: 50 mw Measured By: Wang Shao Jie

Dummy Load: 4 Ohm

0dB=1V Approved By:

EQ or Tone at Flat Place Bass OFF Place

Measuring Items Unite Norm Limit Sample1 Sample2

WOW & Flutter %

Play Freq Response at 40 Hz dB - 2 +/-3

(0dB) at 61 Hz dB - 1 +/- 2

at 127 Hz dB 0 +/-2 at

at 10 KHz dB 0 +/-2

at 20 KHz dB -3 +/- 3

P/B S/N (YEDS) DC Opetation dB

AC Optetaion dB 55 50

Hum & Noise Min Vol mv 2 3

( AC Optetaion) Max Vol mv 5 8

10% THD Output RMS mw 4500 4000

THD (-20dB) at 1 KHz % 1 3

Channel Separation R-L dB 40 30

YEDS (0dB) L-R dB 40 30

Channel Balance (1KHz -10dB) dB 1 3

Black Spot PHILIPS-444A UM 800 600

Finger Prints PHILIPS-444A TRACK 19 18

Interruption PHILIPS-444A UM 800 600

Deflection 731RA MM 1 0.9

Eccentricity 712R UM 210 140

Access Operation First Sec

Time Last Sec

MP3 PLAYBACK PERFORMANCE DATA

KHz

MP3 Playback Transfer Rate kbps 8~384 MP3 Max Readable Folder Folde 200 MP3 Max Readable Files File 500 MP3 Sampling Frequency KHz 32/44.1/48; 16/22.05/24; 8/11.025/12.

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