Samsung NA-C10 Bedienungsanleitung

PC AUDIO

NA-C10/CP50/CP70

MCD-M500(N)/M530(N)

SERVICE Manual

PC AUDIO CONTENTS

Charge

On/Standby

Auto Door Open

Function Open/Close

CD/Tuning

Volume

Power

Sound

Power

Surround

Game

Sound Band

Preset

EQ Timer

On/Off

Timer/

Clock

Sleep

PTY Display

A B Mono/ST

PROG./Set

Phones

Tuning

Mode

RDS

Repeat CD

1. Alignment and Adjustments

2. Exploded Views and Parts List

3. Electrical Parts List

4. Block Diagrams

5. PCB Diagrams

6. Wiring Diagram

7. Schematic Diagrams

8. TROUBLESHOOTING

On/Standby

Auto Door Open

Function Open/Close

CD/MP3

CD/MP3/Tuning

Volume

Power

Sound

Power

Surround

Game

Sound Band

Preset

EQ Timer

On/Off

Timer/

Clock

CD RandomSleep Mute

1/All (A B)

Mono/ST

PROG./Set

MICPhones

Tuning

Mode

Repeat

Charge

HeadphoneVolumeLineOutSBSHold

Open

Play/pause

Stop

F/Skip

B/Skip

Mode ESP

Remain

ELECTRONICS

Printed in Korea

Code no. AH68-00073X

OUTPUT

AM SSG

450KHZ

INPUT

AM ANT

Speaker Terminal

60cm

TFT1

VTVM Oscilloscope

1. Alignment and Adjustments

1-1 Tuner

Samsung Electronics 1-1

FM THD Adjustment

Output

Output 1kHz 28dB

60 dB

Minumum Distortion (0.3% below)

(Figure 1-1)

SSG FREQ.

Adjustment

point

(TFT2)

98 MHz

FM DETECTOR COIL

AM(MW) I.F Adjustment

Maximum output (Figure 1-3)

SSG FREQ.

Frequency

Adjustment

point

(TFT1)

450 kHz

522 kHz

AM I.F COIL

FM Search Level Adjustment

Adjust IVR1 so that “TUNED” of FLT is

lighted (Figure 1-2)

4Gag : 20dB(CE standard)

Figure1-2 FM Auto Search Level Adjustment

Figure1-3 AM I.F Adjustment

Figure1-1 IF CENTER and THD Adjustment

SSG FREQ.

Adjustment

point

(TVR1)

98 MHz

BEACON

SENSITIVITY

SEMI-VR(20KΩ)FM SSG GND

28 dB

FM SSG

Output

GND

Speaker

Terminal

Antenna

Terminal

Distortion Meter

Input

SET

Input

output

Oscilloscope

FM IN

FM Antenna

SET

TVR1

20KHz

* When adjusting T.H.D., readjust I/F coil on the Tuner Pack.

OUTPUT

8. Troubleshooting

8-1 Power Malfunction

Main PCB µ-com VDD(5V)

normal?

UIC1 pin no. 18,47,90

Top PCB ARIC1(K7805) IN: 10V

Input voltage normal?

Main PCB PWR-SENS

voltage normal ?

(pin no. 27;5V)

Main PCB

Does UX1(6MHz)

oscillate?

Main PCB

When the power is

ON 'H' displays

at pin no. 5 ?(5V)

Replace ARIC1

Check the Power PCB ;

ARD 1, 2, 3, 4 (IN5392)

AF2 (1.25A Fuse)

Connect Top PCB and Main PCB.

Check the connector Main PCB.

Wafer ucw3

No No

Check the Main PCB

ARZD1, ARR 7, ARR6

ARD5, ARC5, 12

Yes

Replace µ-com.

Check the Power PCB : P/T, FUSE

Yes

Samsung Electronics 8-1

Samsung Electronics

Troubleshooting

8-2

8-2 No Output

Main PCB AIC1

pin no. 9,4,12,8

B+,B- circuits

AQ 7,8 Base B+ ?

Is Mute selected ?

Check the B+ power PCB

AD1,2,3,4, AF1,3

Confirm for TR short

replace it.

Remove it with Remocon.

Replace Headphone jack

soldering condition.

Check if the output line is

short.

Yes

Headphone Jack short ?

Samsung Electronics

Troubleshooting

8-3

8-3 Tuner Malfunction (FM/AM)

TZD2(8.2V) Voltage ok ?

Check TUNER IC(LA1836)

pin on. 10 ; 8.2V

pin on. 14 ; 7.2V

AM ; 0V ?

FM VT

LC72131 pin no.20

1.7V 7.5V

Power section defective

Check for µ-com IC

Replace LC72131

Check FEP interior

pattern, and any line

disconnections.

No No

Yes

Yes No

Yes

Check MIC6

pin 20 ?

LPF1,2

output ok ?

Yes

AM VT

LC72131 pin 20

0.9V 7V ?

AQI(C4369) Voltage ok ?

PIN NO.8 : 12V

Check the voltage ok ?

TZD3(5.6V) Voltage ok ?

MIC7(LC72131) FM/AM BAND

Switching ok ?

1) Power impaired

so repair defects.

2) LC72131 Oscillator

(HX1 : 7.2MHz) ok ?

3) System line ok ?

LC72131

CONTROL ok ?

Check the LC72131

CONTROL ok ?

Check(TDA7449) function ok ?

QIC1

Connector inserted

correctly ?

(DI, CL, CE, +5V)

Check voltage DC5.0V

at LCD-PCB ?

Check voltage at ZIC1

pin no. 56,57,58

Reinsert the connector.

Check TOP-PCB ,LCD PCB

connection and the voltage of

ZCW1(6pin)

Check the voltage of ARIC1

Replace ZIC1

Yes

Samsung Electronics8-4

8-4 LCD Nalfunction

Troubleshooting

Check main PCB µ-com

connector pin No.

6,7,8,99

Check Top PCB

CCW1 79, JACK PCB 9P

Check Main PCB

µ-com Pin No. 86

LOW : YES

Check CD B+

CQ1, ARQ5

Check the Top PCB

CCW4, CCW1, JACK PCB

MY CD

No No

Check the Leaf S/W

Check the Top PCB

ARQ1, ARZD1

6 : Data 8 : ACK

7 : CLK 99 : RZQ

Yes

Samsung Electronics 8-5

8-5 CD Malfunction

Troubleshooting

Samsung Electronics8-6

8-6 MP3 Malfunction

Check main PCB µ-com

Pin No : 6,7

Check main PCB µ-com

Pin No : 85

Low : YES

Check MP3 B+ BQ3,

Check Top PCB

ANIC3 Pin No : 3,4,6,20

GIC2 Pin No : 6,7,8

ARIC2 (KA7805)

Check the Leaf S/W GCW2

Check Top PCB

BA50, 51, 52, BR8,BF1

Change MP3

Yes

Troubleshooting

Samsung Electronics 8-7

8-7 MCD Part

Troubleshooting

DOES LCD TURN ON

IS CD LSI VCC=3V

DOES SLED MOVE TO INNER

IS FOCUS SEARCH DONE

PROPERLY

PLAY KEY INPUT

CHECK IC 2020 PIN NO 5, Q106 Collector(3V)

CHECK MICOM VCC(IC 9533 outpout) : 3.3V

CHECK HOLD SW/DOOR SW : HOLD SW "L"

DOOR SW "L"

CHECK CON11, CON12, CONNECTION

CHECK MICOM RESET "L" "H" PIN NO 25 KEY input

(When press the play Button)

CHECK IC 7327 PIN NO 55 "F0"

CHECK IC 6509 PIN NO 40, 3, 5

CON101 CONNECTION

Yes

CHECK IC 6509 PIN NO 14("L"), 22("L")

CHECK IC 7327/ IC6509 VCC/CON102 CONNECTION

CHECK IC 7327 PIN NO 15, 16 Resonator Signal(16.93Mhz)

CHECK MICOM COMMAND PORT, PIN NO 38, 39, 40, 41, 42

CHECK IC 7327 PIN NO 56 "Ω"Port/ IC 6509 PIN NO37

CHECK THE LIMIT SWITCH IC 7327 PIN NO 63, 29, 31

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