SAMSUNG MM19LH Service Manual

MICRO COMPONENT
SYSTEM

MM-19

SERVICE

Manual

MICRO COMPONENT SYSTME CONTENTS

9

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. Feb. 1999

Printed in Korea
Code no. AH68-20183B

1. Alignment and Adjustments

1-1 Tuner

Samsung Electronics 1-1

FM THD Adjustment

Minimum Distortion (Figure 1-1)

SSG FREQ.

Adjustment
point
(IT1)

98 MHz

FM DETECTOR COIL

FM Stereo Adjustment

L-CH/R-CH : Maximum(Figure 1-3)

SSG FREQ.

Frequency

Adjustment
point
(ISVR1)

98MHz

98MHz

SEMI-VR(5KΩ)

FM Search Level Adjustment

Adjust ISVR2 so that “TUNED” of LCD
is lighted (Figure 1-2)

Figure1-2 FM Auto Search Level Adjustment

Figure1-3 FM Stereo Separation Adjustment

Figure1-1 IF CENTER and THD Adjustment

SSG FREQ.

Adjustment
point

(ISVR2)

98 MHz

BEACON
SENSITIVITY

SEMI-VR(50KΩ)

FM SSG

FM
SSG

75Ω

Dummy

5KΩ

Stereo
Modulator
(Pilot 10%)

OUT

Oscilloscope

FM antenna

SET

Speaker
Terminal

EXT

GND

VTVM

GND

22 dB

FM SSG

Output
GND

Speaker
Terminal

FM
Antenna
Terminal

Distortion Meter

Input

SET

Input

output

Oscilloscope

FM IN

FM Antenna

SET

50 kΩ

ISVR1

ISVR2

FM DET

IT1

1-2 Samsung Electronics

1-1-1 Test Equipment

1-1-2 Pre-Adjustment

1-1-3 AM Adjustment

1. AM Standard Signal Generator (S.S.G) : 400Hz, 30% MOD

2. Oscilloscope

3. VTVM

4. Frequency counter

5. Loop antenna

6. Dummy load (4½)

7. DC voltmeter

1. Check the source voltage

2. Press TUNER/BAND to select the AM(MW) function.

3. Set the volume control to mid position.

Intermediate
frequency (IF)
adjustment

AM frequency
coverage
adjustment

AM tracking
adjustment

Figure 1-4
Connect DC
voltmeter to AM VT
and GND(OKV1)

1

2

4

5

3

Figure 1-5

Figure 1-5

450 KHz

594 KHz

Figure 1-4

SET

60 cm

AM Signal
Generator

Test Loop
Antenna

Speaker
Terminal

VTVM

IN

OUT

GND

Oscilloscope

AM
Loop
Antenna Jack

Figure 1-5

SET

AM VT(OR1)

OKV1 GND

Input

DC Voltmeter

594 KHz

OL 1

-

-- -

-

-

-

-

522 KHz

522 KHz

IT 2

OT 1

0.9V

Maximum output

Maximum output

Non Adjust

Non Adjust

Remark

FREQ. Setting

Adjust. PointSSG.FREQ.Item

Step

Connection

Alignment and Adjustments

Samsung Electronics 1-3

1-2-1 Additional Test Equipment : Testing Tape

1. MTT-111 (or equipment) : Test tape on which 3KHz signal is recorded (Tape speed adjustment)

2. MTT-113CN (or equivalent) : Test tape on which 8KHz signal is recorded (Azimuth adjustment)

Tape
speed

1

2

Figure 1-6

Figure 1-8

SVR Inside motor

Figure 1-7

3KHz

Maximum output and
identical phase of L,R
channel.
Set the screw
after adjustment

Remark

Adjustment Point

Location no.

Item

Step

Tape

Insert MTT-111 to

Deck.

Press PLAY button

Insert MTT-113CN

to Deck.

Press PLAY button

AZIMUTH
(DECK)
adjustment

TP3

Cassette Deck

Speaker
Terminal

output

LINE OUT

Frequency Counter

Figure 1-6

Figure 1-7

Recording /Play head

REVERSE PLAY

AZIMUTH control knob

Figure 1-8

In Out

Speaker
Terminal

Oscilloscope

SET

(GND)

VTVM

V H

1-2 Cassette Deck

Alignment and Adjustments

2.Exploded Views and Parts List

2-1 Cassette Deck Exploded View and Parts List

2

3

4

5

6

7

9

10

8

1

Samsung Electronics 2-1

No. Code No. Description Specification Remarks

AH59-20004T DECK ASSÕY YN21ZSC-46
1 AH81-11037D R.F PULLEY ASSÕY 8521-200090-300
2 AH81-11154D BELT SUB 6600-090014-001
3 AH81-11037H CAM GEAR 6021-200802-001
4 AH81-11037J S REEL ASSÕY 8521-200080-300
5 AH81-11037K T REEL ASSÕY 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 AH81-11154F MOTOR EG530AD9B
10 AH81-10695L EJECT SLIDE LEVER YAN10N

40

2-2 Main Exploded View and Parts List

2-2-1 Exploded View

Exploded Views and Parts List

2-2

Samsung Electronics

Samsung Electronics

2-3

2-2-2 Parts List

No. Code No. Description Specification Remarks

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

AH64-42012E
AH64-42011E
AH67-12001B
AH64-52003B
AH64-11271B
AH64-42010B
AH68-52034A
AH67-12002A
AH64-32002B
AH61-60129B
AH64-11273A
AH64-11274A
AH64-11275A
AH64-11276A
AH64-11277A
AH64-11278A
AH59-20004T
AH61-80030A
AH64-11272A
AH67-40034A
AH61-22004A

3409-000107
AH66-30085A
AH64-32005B
AH61-62008A
AH64-11270A
AH63-70025B

16603-511-840

AH64-52001J
AH64-42009A
AH61-62007A
AH61-20258C

AJ59-20003E
AH73-10012A
AH61-50182D

AH64-32004N
AH62-32004A
AH64-32006A
AH73-10009A
AH59-10124D
AH63-30244D

DECORATION-FRONT
WINDOW=DOOR
LENS-3S
DOOR-CASSETTE
KNOB-POWER
WINDOW-TUNER
LABEL-STICKER
LENS-POWER
CABINET-FRONT
SPRING-EJECT
KNOB-DECK
KNOB-DECK,PLAY
KNOB-DECK,FF
KNOB-DECK,REW
KNOB-DECK,STOP
KNOB-DECK,PAUSE
DECK-CASSETTE
DAMPER-ASSY
KNOB-VOLUME
FILTER-LCD
HOLDER-LCD
SWITCH-LEAF
LEVER-EJECT
CABINET-TOP
SPRING-KNOB CD
KNOB-CD EJECT
SHEET-CHUCK
CHUCK-PLATE
DOOR-CD
WINDOW-CD
SPRING-CD DOOR
CAP-P/U
DECK-CDP
RUBBER-CD
SHAFT-CD
CABINET-REAR
HEAT-SINK
CABINET-BOTTOM
RUBBER(FOOT)
REMOCON-ASSY
COVER-HIDDEN

-,HIPS,94HB,T2.5,BLK,-

-,PMMA,-,T2.5,SMOGE

-,PMMA,-,-,CLEAR,MM18

-,ABS,94HB,T3.0,-

-,ABS,94HB,BLK,-,MM-19

-,PMMA,-,T2.5,SMOGE
MM17,TOYO TAPE,-,-,-,-,-

-,PMMA,-,-,CLEAR,MM17

-,HIPS,94HB,T3,-,BLK
SUS,PI1.0,-,-,MAX-345

-,ABS,94HB,BLK,-,MM-17

-,ABS,94HB,BLK,-,MM-17

-,ABS,94HB,BLK,-,MM-17

-,ABS,94HB,BLK,-,MM-17

-,ABS,94HB,BLK,-,MM-17

-,ABS,94HB,BLK,-,MM-17
YN21ZSC-46

-,POM,M0.8,G130,BLK,-,MAX-630

-,BS,94HB,BLK,MM-17

-,PC,T0.5,-,-,-,-,-,MM17

-,ABS,94HB,BLK,-,MM17
16V,30mA,10gf,SPST

-,PMMA,T2.5,L50,-,MM16

-,HIPS,94HB,T3,-,BLK

-,-,SUS304,PI0.5,OD8.5

-,ABS,94HB,BLK,-,MM27
HYMERON,T0.3,L50,W68,BLK
ABS+GF BLK NEW

-,ABS,94HB,T3.0,-,BLK

-,PMMA,-,T2.5,SMOGE,-,MM27

-,-,SUS27,PI1.3,OD10,­ABS,-,BLK
CMS-P30AM6
SI RUBBER,-,CMS-M5M6C,BLU

-,MSWR,2.6,10.5,COATING,WHT

-,HIPS,94HB,T3,-,BLK

-,AL,-,t2.0,-,-,-,MM17

-,SECC,-,T1.0,-,-,-,MM27
URETAN,T1.5 PI8,MY-CD25
BU2478-2Z,22,MM-18

-,ABS 94HB,-,2,BLK,AR4022

Exploded Views and Parts List

Samsung Electronics

2-4

Exploded Views and Parts List

2-3 Speaker System

1

4

6

3

2

5

7

Q’TY

Description Specification

Remarks

AH39-10002L POWER CORD;CP2,KLCE-2F,2.15M,5239,VDE Option

AH39-10002M POWER CORD;EP2,SPT-1#28,2.0M,UL/CSA Option

ASSY-PCB MAIN;MM19

AC607 2401-000131 C-AL;1000uF,20%,16V,GP,TP,10x20mm,5
AC609 2401-001925 C-AL;2200UF,20%,25V,GP,BK,16X26,7.5
AC657 2401-000131 C-AL;1000uF,20%,16V,GP,TP,10x20mm,5
AIC1 1201-000334 IC-POWER AMP;8207,SIP ,12P,-,DUAL,-,PLAST
AIC601 AH62-32004A HEAT SINK;-,AL,-,T2.0,-,-,-,MM17
AJ1 3716-000209 TERMINAL-BLOCK;,-,-,60V,7A
AJ2 3722-001311 JACK-PHONE;7P,3.6MM,-,AG,BLK,NO
RJ3 3722-000342 JACK-DC POWER ; 2P,2MM,NI,BLK,#16~22
AW1 AH39-50001H LEAD-FASTEN;RING,1007#24,100MM,BLK
AW2 3811-000122 WIRE-PVC CU ; BCWA,300V,150MM, 1007#26
C4369 6003-000276 SCREW-TAPTITE;BH,+,B,M3,L10,ZPC(YEL),SWC
CDP AH39-20559H LEAD CONNECTOR-ASSY;-,51004-08,50011-800
RCW5 AH39-20001U LEAD CONNECTOR-ASSY; 5264, - , 2P, 150MM,1007#26
FCON1 3711-000820 CONNECTOR-HEADER;BOX,2P,1R,2.5mm,STRAIGH
FM-ANT AH39-50030C LEAD-PASTEN;110REC,1007#26,1000mm,BLK
FT1 AH40-10025N TUNER-FM ;KST-401VA,3G,75OHM
FTP1 AH61-40022A STUD-TAP;SPC1,T0.5,BT2,-,-,
ICF1 2903-000105 FILTER-CERAMIC;BP,10.7MHz+-25KHz,180KHz+
ICF2 2903-000105 FILTER-CERAMIC;BP,10.7MHz+-25KHz,180KHz+
ICF3 2802-000215 RESONATOR-CERAMIC;19KHZ,+-38HZ,-,7.0X3.5
ICF4 14529-304-610 FILTER CERAMIC;AHCM2-450BL
IIC1 AH14-10002D IC;LA1851N,,
IT1 AH26-10001C TRANS-IF;KS940228-10,FM,-,7.6X12.0,-,-,B
IT2 AH26-10001E TRANS-IF;KS940228-09,-,-,7.6X12.0,-,450K
JC310 2401-000131 C-AL;1000uF,20%,16V,GP,TP,10x20mm,5
JCN301 3711-003112 CONNECTOR-HEADER;BOX,8P,1R,2.5mm,STRAIGH
JIC301 1201-000358 IC-PREAMP;22291,DIP,24P,-,DUAL,-,PLASTIC
KT431 AH26-10002G TRANS-IF;IODT-N5002,BIAS-OSC,3.7mH,7.6X
OC1 2302-000235 C-FILM,PSF;470PF,5%,50V,BK,6X11.5,2.5MM
OC2 (Option) 2302-000235 C-FILM,PSF;470PF,5%,50V,BK,6X11.5,2.5MM
OC8 2502-000127 C-CERAMIC TRIMMER;20-4.6PF,+50-0%,100V
OCON1 3711-000814 CONNECTOR-HEADER;BOX,2P,1R,2.5mm,ANGLE,S
RCON5 3711-000820 CONNECTOR-HEADER;BOX,2P,1R,2.5mm,STARIGH
OKV1,2 0405-000140 DIODE-VARACTOR;SVC321SP,-15V,-100NA,TO-9
OL1 AH26-10020D TRANS-IF;KS980205-04,MW-ANT,245µH
OL2(Option) AH26-10020E TRANS-IF;KS980205-03,LW-ANT,2.6mH
OT1 AH26-10001K TRANS-IF;KS940228-02,-,110uH,7.6X12.0,­OT2(Option) AH26-10001J TRANS-IF;KS940228-01,-,300uH,7.6X12.0,­QIC501 1204-001465 IC-VOLUME/TONE ; TDA7440D,SOP,28P
RC705 2401-001052 C-AL;3300UF,20%,25V,GP,-,16X31.5,7.
RC706 2401-000131 C-AL;1000uF,20%,16V,GP,TP,10x20mm,5
RCW701 AH39-20560R LEAD CONNECTOR-ASSY;-,5264,35022,3P,200m
RD701 0402-000157 DIODE-RECTIFIER;1N5402,200V,3A,DO-201AD
RD702 0402-000157 DIODE-RECTIFIER;1N5402,200V,3A,DO-201AD
RD703 0402-000157 DIODE-RECTIFIER;1N5402,200V,3A,DO-201AD
RD704 0402-000157 DIODE-RECTIFIER;1N5402,200V,3A,DO-201AD
RD710 0402-000157 DIODE-RECTIFIER;1N5402,200V,3A,DO-201AD
RD711 0402-000127 DIODE-RECTIFIER;1N4002,100V,1A,DO-41,TD
RIC1 1203-000276 IC-POSI.FIXED REG.;7805,TO-220,3P,-,PLAS
RQ703 0502-000303 TR-POWER;KSD882,NPN,1W,TO-126,TP,160-32
SCON1 3711-001234 CONNECTOR-HEADER;NOWALL,11P,1R,2.0mm,ANG
SCON2 3711-001234 CONNECTOR-HEADER;NOWALL,11P,1R,2.0mm,ANG
TA8207 6003-000276 SCREW-TAPTITE;BH,+,B,M3,L10,ZPC(YEL),SWC
UCN901 3711-001137 CONNECTOR-HEADER;BOX,8P,1R,2mm,STRAIGHT,
UQ901 0502-000407 TR-POWER;KTC4369Y,NPN,15W,TO-220,BK,120
ZJ1 3722-000377 JACK-RCA;4P/2C,3.5mm,SN,BLK,#16~22

ASSY-PCB MAIN,AUTO;MM19 S.N.A.

AC601 2401-001912 C-AL;1uF,20%,50V,GP,5x11mm,2mm,BK
AC602 2202-000850 C-CERAMIC,MLC-AXIAL;2.2NF,30%,16V,Y5R,TP
AC603 2401-001895 C-AL;100uF,20%,16V,GP,6.3x11mm,2.5m

AC604 2401-001465 C-AL;47UF,20%,10V,GP,-,5X11,2MM
AC605 2401-000303 C-AL;100uF,20%,25V,GP,TP,6.3x11,2.5

AC606 2301-000387 C-FILM,PEF;150nF,10%,50V,12.5x15x7.5,7mm
AC608 2401-001113 C-AL;330UF,20%,25V,GP,-,10X12.5,5MM
AC611 2202-000781 C-CERAMIC,MLC-AXIAL:100pF,10%,50V,Y5P,TP
AC651 2401-001912 C-AL;1uF,20%,50V,GP,5x11mm,2mm,BK
AC652 2202-000850 C-CERAMIC,MLC-AXIAL;2.2NF,30%,16V,Y5R,TP

AC654 2401-001465 C-AL;47UF,20%,10V,GP,-,5X11,2MM
AC655 2401-000303 C-AL;100uF,20%,25V,GP,TP,6.3x11,2.5
AC656 2301-000387 C-FILM,PEF;150nF,10%,50V,12.5x15x7.5,7mm
AC666 2202-000781 C-CERAMIC,MLC-AXIAL:100pF,10%,50V,Y5P,TP
ACH1 2701-000114 INDUCTOR-AXIAL;10uH,10%,2.5x3.4mm

ACH2 2701-000114 INDUCTOR-AXIAL;10uH,10%,2.5x3.4mm
ACH3 2701-000114 INDUCTOR-AXIAL;10uH,10%,2.5x3.4mm
AR601 2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2mm
AR603 2001-000938 R-CARBON;68ohm,5%,1/8W,AA,TP,1.8x3.2mm
AR604 2001-000552 R-CARBON;270ohm,5%,1/4W,AA,TP,2.4x6.4mm

AR605 2001-000525 R-CARBON;22ohm,5%,1/4W,AA,TP,2.4x6.4mm
AR651 2001-000429 R-CARBON;1Kohm,5%,1/8W,AA,TP,1.8x3.2mm
AR653 2001-000938 R-CARBON;68ohm,5%,1/8W,AA,TP,1.8x3.2mm
AR654 2001-000552 R-CARBON;270ohm,5%,1/4W,AA,TP,2.4x6.4mm
FC1 2201-000144 C-CERAMIC,DISC;100pF,5%,50V,CH,TP,8x3,5

FC2 2401-001895 C-AL;100uF,20%,16V,GP,6.3x11mm,2.5m
FC4 2201-000846 C-CERAMIC,DISC;47NF,+80-20%,50V,Y5V,TP,8
FD1 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,500mW,
FD2 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,500mW,
FR1 2001-000817 R-CARBON;5.6ohm,5%,1/8W,AA,TP,1.8x3.2mm

FR6 2001-000802 R-CARBON;5.6KOHM,5%,1/8W,AA,TP,1.8X3.2M
IC1 2201-000846 C-CERAMIC,DISC;47NF,+80-20%,50V,Y5V,TP,8
IC10 2201-000846 C-CERAMIC,DISC;47NF,+80-20%,50V,Y5V,TP,8
IC11 2401-000419 C-AL;10UF,20%,16V,GP,-,4X7,5
IC13 2401-000419 C-AL;10UF,20%,16V,GP,-,4X7,5

IC14 2202-000807 C-CERAMIC,MLC-AXIAL;22NF,+80-20%,25V,Y5V
IC15 2202-000807 C-CERAMIC,MLC-AXIAL;22NF,+80-20%,25V,Y5V
IC16 2202-000781 C-CERAMIC,MLC-AXIAL:100pF,10%,50V,Y5P,TP
IC17 2202-000796 C-CERAMIC,MLC-AXIAL;UP050B102KB 1NF,10%,
IC18 2301-000419 C-FILM,PEF;27nF,10%,50V,7.5x10.5x4mm,5mm

IC19 2301-000419 C-FILM,PEF;27nF,10%,50V,7.5x10.5x4mm,5mm
IC2 2401-001912 C-AL;1uF,20%,50V,GP,5x11mm,2mm,BK
IC20 2202-000807 C-CERAMIC,MLC-AXIAL;22NF,+80-20%,25V,Y5V
IC3 2301-000422 C-FILM,PEF;3.3NF,10%,50V,TP,5.5X7X3MM,5M
IC4 2301-000379 C-FILM,PEF;10NF,10%,50V,TP,6X7X3.2MM,5MM

IC5 2202-000781 C-CERAMIC,MLC-AXIAL:100pF,10%,50V,Y5P,TP
IC6 2401-000419 C-AL;10UF,20%,16V,GP,-,4X7,5
IC7 2401-001912 C-AL;1uF,20%,50V,GP,5x11mm,2mm,BK
IC8 2401-001022 C-AL;3.3UF,20%,50V,GP,-,5X11,2MM
IC9 2401-001912 C-AL;1uF,20%,50V,GP,5x11mm,2mm,BK

ICH1 2701-000114 INDUCTOR-AXIAL;10uH,10%,2.5x3.4mm
ID1 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,500mW,
ID2 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,500mW,
IQ1 0501-000392 TR-SMALL SIGNAL;KSC838-O,NPN,250mW,TO-92
IQ2 0501-000303 TR-SMALL SIGNAL;KSA733-Y,PNP,250mW,TO-92
IQ3 0504-001003 TR-DIGITAL;KSR2003,PNP,300MW,22K-22K,TO­IQ4 0504-000118 TR-DIGITAL;KSR1003,NPN,300mW,22K-22K,TO­IR1 2001-000449 R-CARBON;2.2Kohm,5%,1/8W,AA,TP,1.8x3.2m
IR10 2001-000802 R-CARBON;5.6KOHM,5%,1/8W,AA,TP,1.8X3.2M

Electrical Parts List

Location no. Code no. Description & Specifiation Remarks

Location no. Code no. Description & Specifiation Remarks

Samsung Electronics 3-1

3. Electrical Parts List