Samsung MAX-N25 Schematic

3 CD CHANGER
MINI MINI COMPONENT

MAX-N25

SERVICE

Manual

MINI COMPONENT SYSTME CONTENTS

Standby

R

Mono/ST

TUNER CD TAPE AUX

Band

Disc 1

CD Repeat Disc Change

Open/Close

Disc 2 Disc 3

Vol.

Hi Speed
Dubbing

Program/Set

Phones

AI Off/Sleep

Timer On/Off Timer/Clock

Demo

S.BASS

Down Preset/Manual Up

C

l

a

s

s

i

c

R

o

c

k

P

o

p

CD Synchro /

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

ELECTRONICS

© Samsung Electronics Co.,Ltd. JUN. 2000

Printed in Korea
Code no. AH68-00073S

OUTPUT

AM SSG
450KHZ

INPUT

AM ANT
IN

Speaker Terminal

60cm

TL2

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 1-2)

SSG FREQ.

Adjustment
point
(TL3)

98 MHz

FM DETECTOR COIL

AM(MW) I.F Adjustment

Maximum output (Figure 1-4)

SSG FREQ.

Frequency

Adjustment
point
(TL2)

450 kHz

522 kHz

AM I.F COIL

FM Search Level Adjustment

Adjust IVR1 so that “TUNED” of FLT is
lighted (Figure 1-3)

4Gain : 20dB(CE standard)

Figure1-3 FM Auto Search Level Adjustment

Figure1-4 AM I.F Adjustment

Figure1-2 IF CENTER and THD Adjustment

SSG FREQ.

Adjustment
point

(TSR1)

98 MHz

BEACON
SENSITIVITY
SEMI-VR(10KΩ)

FM SSG

GND

28 dB

FM SSG

Output
GND

Speaker
Terminal

FM
Antenna
Terminal

Distortion Meter

Input

SET

Input

output

Oscilloscope

FM IN

FM Antenna

SET

TSR1
10KHz

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

OUTPUT

Fig1-1. Adjustment location of Tuner Part

Speaker
Terminal

output

Frequency Counter

Figure 1-5

Figure 1-6

In Out

Cassette Deck

Oscilloscope

SET

(GND)

VTVM

V H

SPEAKER

Figure 1-7

Recording /Play head

AZIMUTH control

1-1-2 AM(MW),LW,SW1,SW2 Adjustment

Circuit Measuring Instrument & Step S.S.G Radio dial Adjusting Adjust for
to be Arrangement Frequency Setting Point
Adjusted

1 522KHz 522KHz TL11 Aduust for 1.0V±0.1V at the low.

OSC Connect AM signal (IR117)

generator to loop
antenna,VTVM AND
oscilloscope 2 1611KHz 1611KHz -

Check for 7.0V±1.0V at the high.

(Fig 1-3) (IR117)
AM
(MW)

RF “ 1 594KHz 594KHz TL10 Maximum out

DET “ 1 594KHz 594KHz - Check for 1.2V±0.03V at the location NO

ATT:60dB of IC006(104M) after short-circuit IC1(0.47u).

INTER FREQ

“ 1 455KHz 522KHz IFT1 Maximum out

OSC Fig 1-3 1 146KHz TL6 Aduust for

2.0V±0.1V at the low.

LW 2 290KHz -

Check for 7.0V±1.0V at the high.

RF 1 150KHz 150KHz TL9 Maximum out

OSC Fig 1-3 1 2.3MHz TL4 Aduust for 1.0V±0.1V at the low.

SW1 2 7.3MHz -

Check for 8.5V±1.0V at the high.

RF 1 3.5MHz 3.5MHz TL8 Maximum out

OSC Fig 1-3 1 9.5MHz TL3 Aduust for 1.5V±0.1V at the low.

SW2 2 26.1MHz - Check for 8.0V±1.0V at the high.

RF 1 10MHz 10MHz TL5 Maximum out

2-2

Samsung Electronics

1-2-1 To Adjust Tape Speed

* Measuring tape: i) MTT-111 (or equivalent)

(Tapes recorded with 3kHz)

ii) MTT-5512 (or equivalent)

Notes

SPEED

Control

1

2

MTT-111N
(3KHZ)

MTT-111
(3KHZ)

Fig. 1-5

-

5200~6600Hz
Check

Remark

Standard

Figure

Adjust
Point

Item

Step

Tape

DVR3

No
Adjustment

HI SPEED
Control

Azimuth

1

MTT-113CN

8KHZ

Fig. 1-7

Output:Maximum

Remark

Standard

Figure

Adjust
Point

Item

Step

Tape

Adjustment

screw of HEAD

L,R
Unbalance

1

2

MTT-112B
(1KHZ)

MTT-5512

±0.5dB

Fig. 1-6

Fig. 1-6

SPEAKER
VTVM (A-DECK)

60KHZ±1KHZ

DCW4

Remark

Frequency
Range

Figure

Adjust
Point

Item

Step

Tape

DVR4

DL4

Record
Frequency

1-2 Cassette Deck

Alignment and Adjustments

Pre­Setup

Press play
button after
puting tape into
the Deck1

Pre­Setup

Press Rec button
after connecting
(Fig1-6)

Pre­Setup

Rec Bias
Voltage

1

MTT-5512
(3KHZ)

7V±0.5V

Connect to MWF6 from
AC Meter.

Remark

Votage
Range

Adjust
Point

Item

Step

Tape

SVR1

SVR2

Pre­Setup

- Adjust SPEED Control

- Adjust

Record Frequency

- Adjust Azimuth

- Adjust Rec Bias Voltage

2. Exploded View and Parts List

2-1 Total

Samsung Electronics

2-1

2-1-1 Parts List

No. Code No. Description Specification Q’TY Remarks

Samsung Electronics

2-2

1 AH64-00385A WINDOW-CASS.L PMMA SMOKE 1
2 AH64-00386A WINDOW-CASS.R PMMA SMOKE 1
3 AH64-00382B DOOR-CASSETTE.L ABS L/GRY 1
4 AH64-00383B DOOR-CASSETTE.R ABS L/GRY 1
5 AH64-00394B KNOB-VOLUME ABS M/GRY 1
6 AH64-00388B DECO-VOLUME ABS L/GRY 1
7 AH64-00442B KNOB-MIC ABS M/GRY 1 option
8 AH64-00387B DECO-FRONT ABS BLUE 1
9 AH61-00282A HOLDER-FRONT PC/ABS WHT 1
10 AH64-00384B WINDOW-VFD PMMA VIOLET 1
11 AH64-00389B DECO-SOUND PMMA CLR 1
12 AH63-00108A FILTER-VFD PC 0.3T BLK 1
13 AH64-00397B DOOR-CD ABS L/GRY 1
14 AH64-70003K BADGE-BRAND ABS+STAMPING 1
15 AH64-00381B CABINET-FRONT MIPS L/GRY 1
16 AH61-00013A SPRING-EJECT SUS P1.0 2
17 AH61-80030A DAMPER-ASSY POM M0.8 G130 2
18 AH67-00031B LENS-SOUND PMMA CLR 1
19 AH63-00093A FILTER-SOUND PC 0.16T MILKY 1
20 AH61-00254A HOLDER-SOUND PC/ABS WHT 1
21 AH64-00393B KNOB-OPEN ABS L/GRY 1
22 AH64-00392B KNOB-CD ABS M/GRY 1
23 AH67-00032B LENS-FUNCTION PMMA CLR 1
24 AH63-00092A FILTER-FUNCTION PC 0.16T MILKY 1
25 AH61-00255A HOLDER-FUNCTION PC/ABS WHT 1
26 AH67-00015A LENS-POWER PMMA MILKY 1
27 AH64-00390A KNOB-POWER ABS D/GRY 1
28 AH64-00391B KNOB-DEMO ABS L/GRY 1
29 AH64-00395A KNOB-CASS.S ABS M/GRY 10
30 AH64-00396A KNOB-CASS.L ABS M/GRY 1 option
31 AH64-30444A CABINET-SIDE,L MIPS L/GRAY 1
32 AH64-30443A CABINET-TOP MIPS L/GRAY 1
33 AH64-30445A CABINET-SIDE,R MIPS L/GRAY 1
34 AH61-20539A HOLDER-VFD ABS BLK 1
35 AH61-00021A SUPPORT-PCB ABS BLK 1
36 AH62-32009A HEAT-SINK,M AL EXTRU 1
37 AH61-10767A BRKT-H/SINK SECC 1.0T 1
38 AH64-30446B CABINET-REAR MIPS L/GRAY 1
39 AH64-30416A CABINET-BOTTOM SECC 1.0T 1

2-2 Cassette Deck Exploded View and Parts List : (Auto Stop)

No. Code No. Description Specification Remarks

AH59-20005X DECK-CASSETTE YN21ZSW-77
1 AH81-11037D R.F PULLEY ASS’Y 8521-200090-300
2 AH81-11154D BELT SUB 6600-090014-001
3 AH81-11037H CAM GEAR 6021-200802-001
4 AH81-11037J S REEL ASS’Y 8521-200080-300
5 AH81-11037K T REEL ASS’Y 8521-200070-300
6 AH81-11154E BELT MAIN 6600-090020-001
7 AH81-11150W R/P HEAD TC-591
8 AH81-11150X ERASE HEAD TC-230AN
9 AH81-11037Q MOTOR EG530YD2BH

Samsung Electronics 2-3

2-3 CD Deck Exploded View and Parts list

12

8

2

19

7

6

5

4

3

1

15

27

10

9

20

21

11

14

16

13

CD SUB PCB

TRAY STOPPER

22

BASE MAIN

23

24

17

18

25

26

No. Code No. Description Specification Remarks

Samsung Electronics

2-4

AJ59-20150T ASS’Y-DECK CMS-300
1 AH66-80022A SLIDER-CAM ABS HF-380 NTR
2 AH66-60034A BELT-LOAD CR
3 AH66-20186A GEAR-PULLEY POM (M90-44) WHT
4 AH66-20187A GEAR-LOAD POM (M90-44) BLK
5 AH66-20188A GEAR-CAM POM (M90-44) WHT
6 AH66-20189A GEAR-TRAY POM (M90-44) BLK
7 AH66-20190A GEAR-CONVERT POM (M90-44) WHT
8 AH66-20191A GEAR-SYNCRO ABS HF-380 NTR
9 AH66-20192A GEAR-WORM POM(M90-44),M0.5,PCD4.5
10 AH31-12001A MOTOR-LOADING FF-030PN-09120
11 AH66-20193A GEAR-ROULLETE POM(M90-44) BLK
12 AH66-90056A TRAY-ROULLETE ABS XR-401 BLK
13 AH66-90055A TRAY-DISC ABS BLK
14 AH59-10099A ASSY-PCB SENSOR CMS-300,ASSY SENSOR
15 AH61-00225A BRKT-CHUCK SECC T0.8,CMS-300
16 3302-000159 MAGNET-CHUCK AC,3500-3800G,2.6-3.2MGOe,30
17 AH66-90057A TABLE-CHUCK ,ABS,BLK,CMS-300
18 AH69-20342B SHEET-CHUCK SHEET,HYMERON,BLK,0.4T
19 AH59-10102A ASSY-PCB SW CMS-300,ASSY SW
20 AH31-10021A MOTOR-DC RF-500TB,9VDC/130MA
21 AH66-10008A PULLEY-MOTOR POM,BLK,CMS-CR3
22 AH73-10031A RUBBER-CD(R) SI,CMS-300,40,RED
23 AH91-60150A CDP DECK ASSY CMS-D50SG6,CMS-300D
24 AH66-30098A LEVER-LIFTER ABS BLK CMS-300
25 AH30-00003A PICK-UP SOH-AA,D51SG6(W/D/CO)
26 AH73-10034A RUBBER-CD(G) SI,CMS-300,40,GREEN
27 AH61-20428A BASE-MAIN ABS,BLK,CMS-300