Samsung SV-21, SV-41, SV-91 Schematic

VIDEO CASSETTE RECORDER

SV-D91 SV-D41 SV-D21

SERVICE

1. Precautions

2. Alignment and Adjustment

3. Exploded View and Parts List

4. Electrical Parts List

5. Schematic Diagrams

Manual

VIDEO CASSETTE RECORDER CONTENTS

For mechanical disassembly and adjustment, refer to the “Mechanical Manual” (DX-9R AC68-00001A).

SAMTRON

POWER

EJECT

POWER

REC

REW

F .F

STOP

PLAY

SERVICE MANUAL SV-D91/D41/D21

Printed in Korea

AC68-00821A

IMPORTANT SERVICE GUIDE

 MODE SWITCH (PROGRAM SWITCH) ASSEMBLY POINT

1) When installing the ass’y full deck on the Main PCB, be sure to align the assembly point of mode switch.

ASSEMBLY POINT

Fig. 1

 HOW TO EJECT THE CASSETTE TAPE

(If the unit does not operate on condition that tape is inserted into housing ass’y)

1) Remove the Holder Worm Œ and the gear worm ´. (See Fig. 2)

2) Turn the Gear Worm Wheel ˇ counterclockwise in the direction of arrow with screw driver. (See Fig. 2)

3) When Slider S, T are approached in the position of unloading, rotate holder Clutch counterclockwise after inserting screw driver in the hole of frame’s bottom in order to wind the unwounded tape. (Refer to Fig. 3) (If you rotate Gear Worm Wheel continuously when tape is in state of unwinding, you may cause a tape contamination by grease and tape damage. Be sure to wind the unwounded tape in the state of set horizontally.)

4) Rotate Gear Worm Wheel ˇ counterclockwise using screw driver again up to the state of eject mode and then pick out the tape. (Refer to Fig. 2)

Fig. 2 Fig. 3

Œ HOLDER WORM

´ GEAR WORM

SCREW DRIVER

ˇ GEAR WORM WHEEL

FRAME

Samsung Electronics 1-1

1. Precautions

1. Be sure that all of the built-in protective devices are

replaced. Restore any missing protective shields.

2. When reinstalling the chassis and its assemblies, be

sure to restore all pretective devices, including : control knobs and compartment covers.

3. Make sure that there are no cabinet openings

through which people--particularly children

--might insert fingers and contact dangerous voltages. Such openings include the spacing between the picture tube and the cabinet mask, excessively wide cabinet ventilation slots, and improperly fitted back covers.

If the measured resistance is less than 1.0 megohm or greater than 5.2 megohms, an abnormality exists that must be corrected before the unit is returned to the customer.

4. Leakage Current Hot Check (See Fig. 1-1) :

Warning : 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 Publication UL1410, 59.7).

Fig. 1-1 AC Leakage Test

5. With the unit completely reassembled, plug the AC line cord directly the power outlet. With the unit’s AC switch first in the ON position and then OFF, measure the current between a known erath ground (metal water pipe, conduit, etc.) and all exposed metal parts, including : antennas, handle brackets, metal cabinets, screwheads and control shafts. The current measured should not exceed

0.5 milliamp. Reverse the power-plug prongs in the AC outlet and repeat the test.

6. Antenna Cold Check : With the unit’s AC plug disconnected from the AC source, connect an electrical jumper across the two AC prongs. Connect one lead of the ohmmeter to an AC prong. Connect the other lead to the coaxial connector.

7. Some semiconductor (“solid state”) devices are easily damaged by static electricity. Such components are called Electrostatically Sensitive Devices (ESDs); examples include integrated circuits and some field-effect transistors. The following techniques will reduce the occurrence of component damage caused by static electricity.

8. Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your body by touching a known earth ground. Alternatively, wear a discharging Wrist-strap device. (Be sure to remove it prior to applying power--this is an electric shock precaution.)

9. Design Alteration Warning : Never alter or add to the mechanical or electrical design of this unit. Example : Do not add auxiliary audio or video connectors. Such alterations might create a safety hazard. Also, any design changes or additions will void the manufacturer’s warranty.

10. Never defeat any of the B+ voltage interlocks.

Do not apply AC power to the unit (or any of its assemblies) unless all solid-state heat sinks are correctly installed.

DEVICE UNDER

TEST

(READING SHOULD

NOT BE ABOVE

0.5mA)

LEAKAGE CURRENT

TESTER

EARTH

GROUND

TEST ALL

EXPOSED METER

SURFACES

ALSO TEST WITH

PLUG REVERSED

(USING AC ADAPTER

PLUG AS REQUIRED)

2-WIRE CORD

Precautions

1-2 Samsung Electronics

11. Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument’s ground lead last.

12. Observe the original lead dress, especially near the following areas : Antenna wiring, sharp edges, and especially the AC and high voltage power supplies. Always inspect for pinched, outof-place, or frayed wiring. Do not change the spacing between components and the printed circuit board. Check the AC power cord for damage. Make sure that leads and components do not touch thermally hot parts.

13. Product Safety Notice : Some electrical and mechanical parts have special safety-related characteristics which might not be obvious from visual inspection. These safety features and the protection they give might be lost if the replacement component differs from the original--even if the replacement is rated for higher voltage, wattage, etc.

Components that are critical for safety are indicated in the circuit diagram by shading, ( or ). Use replacement components that have the same ratings, especially for flame resistance and dielectric strength specifications. Areplacement part that does not have the same safety characteristics as the original might create shock, fire or other hazards.

Samsung Electronics

2-1

2. Alignment and Adjustment

2-1 Reference

1) X-Point (Tracking center) adjustment, “Head switching adjustment” and “NVRAM option setting” can be adjusted with remote control.

2) When replacing the Micom (IC601) and NVRAM (IC605 ; EEPROM) be sure to adjust the “Head switching adjustment” and “NVRAM option setting”.

3) When replacing the cylinder ass’y, be sure to adjust the “X-Point” and “Head switching adjustment”.

4) Among Samsung VCR remote control used for adjustment as a accessory, only the remote control that has figures buttons (0 ~ 9) is available for all adjustment regardless of chassis.

5) How to adjustment.

- Press the “SW718 (TEST)” button on Main PCB to set the adjustment mode.

- If the corresponding adjustment button is pressed, the adjustment is performed automatically.

- If the adjustment is completed, be sure to turn the power off.

2-1-1 Location of adjustment button of remote control

Fig. 2-1

Q-PRO

IPC

DISPLAY

SHUTTLE

V-LOCK

CLR/RST F.ADV

INPUT INDEX

TRK PROG

REPEAT

Remote Control for adjustment is not supplied as a Service Jig.

POWER DISPLAY

CNT.RESET SPEED

IIP/S IPC

TRK

REC MENU

Head Switching Adjustment

("SPEED" Button)

NVRAM Option Setting

("MENU" Button)

X-Point (Tracking Center) Adjustment

("5" Button)

STANDBY/ON EJECT

2-2

Samsung Electronics

Alignment and Adjustment

2-1-2 SW718 (TEST) location for adjustment mode setting

Fig. 2-2 Main PCB (Top View)

PRESS

Alignment and Adjustment

Samsung Electronics

2-3

2-2 Mechanical Adjustment

Note : Refer to the Mechanical Manual “DX-9R (AC68-00001A)” for the adjustment and confirmation of

ass’y full deck.

2-2-1 The number and position of test point

Test point : TP601 (H’D S/W -Trigger)

TP602 (Control pulse) TP301 (Video output) TP302 (Audio output) TP303 (Envelope)

Fig. 2-3 Location of Test point (Main PCB-Top View)

AUDIO OUTPUT

HEAD SWITCHING

ENVELOPE

2-2-2 ACE Head Position (X-Point) Adjustment

(See the 2-2-1(d) ACE Head Position (X-Point) Adjustment on page 2-2 of the Mechanical Manual)

1) Playback the alignment tape (Color bar).

2) Press the “SW718 (TEST)” button on Main PCB to set the adjustment mode. (See Fig. 2-2)

3) Press the “5” button of remote control then adjustment is operated automatically. (See Fig. 2-1)

4) Connect the CH-1 probe to TP303 (Envelope) the CH-2 probe to TP601 (H’D switching pulse) and then trigger to CH-1.

5) Insert the (-) driver into the X-Point adjustment hole and adjust it so that envelope waveform is maximum.

6) Turn the Power off.

2-4

Samsung Electronics

Alignment and Adjustment

2-3 Head Switching Point Adjustment

1) Playback the alignment tape.

2) Press the “SW718 (TEST)” button on Main PCB to set the adjustment mode. (See Fig. 2-2)

3) Press the “SPEED” button of remote control then adjustment is operated automatically. (See Fig. 2-1)

4) Turn the Power off.

2-4 NVRAM Option Setting

1) Press the “SW718 (TEST)” button on Main PCB to set the adjustment mode. (See Fig. 2-2)

2) Press the “MENU” button on the remote control about 5 seconds then option setting display is appeared. (See Fig. 2-4 and 2-5)

3) Select the option number (See Table 2-1 ; Page 2-5) of corresponding model with “FF” and “REW” button on the remote control.

4) If selecting the option number is completed, press the “PLAY” button of remote control. (If “PLAY” button is pressed, the selected number is changes reversed color. ; See Fig. 2-4 and 2-5)

5) Press the “OK (VCR)”, “MENU (VCP)” button of remote control again to store the option number. (“PLEASE WAIT” is displayed for a second as shown Fig. 2-6, 2-7 and this setting is completed.)

6) Turn the Power off.

1) NVRAM Option is adjusted at production line basically.

2) In case Micom (IC601) and NVRAM (IC605 ; EEPROM) is replaced, be sure to set the corresponding option number of the repaired model. (If the option is not set, the unit is not operated.)

01 02 03 04 05 06 07 08 09 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 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

OPTION DIODE

CNG : SAVE : OK

Fig. 2-4 (VCR)

01 02 03 04 05 06 07 08 09 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 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

OPTION DIODE

CNG : SAVE : MENU

Fig. 2-5 (VCP)

01 02 03 04 05 06 07 08 09 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 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

OPTION DIODE

CNG : SAVE : OK

PLEASE WAIT

Fig. 2-6 (VCR)

01 02 03 04 05 06 07 08 09 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 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

OPTION DIODE

CNG : SAVE : MENU

PLEASE WAIT

Fig. 2-7 (VCP)

Alignment and Adjustment

Samsung Electronics

2-5

COUNTRY MODELS OPTION NUMBER

FRANCE SV-632FT/632FG 5, 8, 12, 13, 14, 15, 16, 18, 19, 22, 23, 26, 29, 35, 38, 50, 53, 54

SV-432FT/432FS/432FG/432FB

5, 8, 12, 16, 18, 19, 22, 23, 26, 29, 35, 38, 50, 53, 54

SV-232FT/232FS/232FG/232FB

5, 16, 18, 19, 22, 23, 26, 29, 35, 38, 50, 53, 54

U.K. SV-632B 6, 8, 10, 12, 13, 15, 16, 22, 23, 27, 35, 38, 50, 54

SV-234B 3, 8, 10, 16, 22, 27, 35, 38, 50, 54 SV-232B 8, 10, 16, 22, 27, 35, 38, 50, 54

GERMANY SV-632X

2, 5, 7, 8, 9, 10, 12, 13, 14, 16, 18, 22, 23, 24, 29, 32, 35, 38, 50, 53, 54

SV-232XB/232XS/232XG/232XM

2, 5, 7, 16, 18, 22, 23, 24, 29, 32, 35, 38, 50, 53, 54,

AUSTRIA SV-232X 2, 5, 7, 16, 18, 22, 23, 24, 32, 35, 38, 50, 53, 54

SWITZERLAND SV-232X 2, 5, 7, 16, 18, 22, 23, 24, 31, 32, 35, 38, 50, 53, 54

SPAIN SV-632X 5, 8, 9, 10, 12, 13, 14, 15, 16, 18, 22, 23, 31, 35, 38, 50, 53, 54

SV-234X 5, 7, 16, 18, 22, 23, 24, 31, 35, 38, 50, 53, 54 SV-232X 5, 16, 18, 22, 23, 31, 35, 38, 50, 53, 54

ITALY SV-232XS/232XB 5, 16, 18, 22, 23, 29, 31, 35, 38, 50, 53, 54

PORTUGAL SV-232X 5, 16, 18, 22, 23, 35, 38, 48, 50, 53, 54

NETHERLAND SV-632X

5, 8, 9, 10, 12, 13, 14, 15, 16, 18, 22, 23, 29, 30, 32, 35, 38, 50, 53, 54

SV-232X 16, 18, 22, 29, 30, 32, 35, 38, 50, 54

DENMARK SV-632X

5, 8, 9, 10, 12, 13, 14, 15, 16, 18, 22, 23, 29, 30, 35, 38, 50, 53, 54

SV-232X 16, 18, 22, 29, 30, 35, 38, 50, 54

SWEDEN SV-232X 16, 18, 22, 29, 30, 31, 35, 38, 50, 54

NORWAY SV-232X 16, 18, 22, 30, 31, 35, 38, 50, 54

GREECE SV-232X 16, 18, 22, 29, 31, 32, 35, 38, 50, 54

U.A.E. SV-232G

8, 11, 16, 17, 18, 20, 22, 25, 26, 30, 31, 32, 35, 38, 42, 48, 50, 54

SAUDI ARABIA SV-250G

8, 11, 16, 17, 18, 20, 22, 25, 26, 30, 31, 32, 35, 38, 42, 48, 50, 54

IRAN SV-250G 8, 11, 16, 17, 18, 20, 22, 25, 26, 29, 35, 38, 41, 42, 48, 50, 54 MALAYSIA SV-232G 8, 9, 10, 16, 17, 18, 20, 22, 25, 26, 29, 31, 32, 35, 38, 42, 50, 54 THAILAND

SV-D200B/D200M/D200G

8, 9, 10, 16, 17, 18, 22, 25, 26, 29, 31, 32, 35, 38, 42, 50, 54

SOUTH AFRICA SV-222I 8, 9, 11, 16, 17, 18, 22, 25, 26, 29, 31, 32, 35, 38, 42, 50, 54

AFRICA SV-D22K 9, 10, 11, 17, 18, 19, 22, 29, 31, 32, 34, 37, 39, 40, 42, 55

2-6

Samsung Electronics

Alignment and Adjustment

MEMO

Samsung Electronics 3-1

3. Exploded View and Parts List

3-1 Cabinet Assembly - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

3-2 Mechanical Parts (Top Side) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

3-3 Mechanical Parts (Bottom Side) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Page

3-2

3-4

3-6

Exploded View and Parts List

3-2 Samsung Electronics

3-1 Cabinet Assembly

S.N.A. : Service Not Available

157

153

FULL DECK (S.N.A.)

TM401B

200

MAIN PCB (S.N.A.)

BRACKET-FRAME

(S.N.A.)

CN602A

CN3A1S

101

155

S601S

LD601S

S602S

LED PCB (S.N.A.)

102

157

A2/NICAM PCB-OPTION

(S.N.A.)

Exploded View and Parts List

Samsung Electronics 3-3

Loc. No Parts No. Description ; Specification Remark

Refer to table below

ASSY-PANEL FRONT;HIPS 94HB

Refer to table below

DOOR-CASSETTE 22 AC61-62032A SPRING-MASK;X-9,-,SUS,-,4.4,-,SV-C130 101

Refer to table below

CABINET-TOP;-,PCM(SECC),-0.525,320 102 AC63-00004A COVER-BOTTOM;-,SECC,-,PCM0.525,TM6524,-, 153 AC60-12126A SCREW-BH;-,BH,-,4*12,FE,FZY,-,-,155 AC60-12134A SCREW-TAP BH;-,BH,-,2-4X16,-,FE 157 AC60-10063A SCREW-TAPTITE;BH,+,-,M3,L12,ZPC3,SWRCH18 200 AC39-10019A POWER CORD COMMON

AC39-10022K POWER CORD U.K. ONLY CN3A1S 3809-001111 CABLE-FLAT;30V,80C,130mm,7P,1.25mm,UL289 CN602A 3809-001049 CABLE-FLAT;30V,80C,100mm,5P,1.25mm,UL289 LD601S AC61-21009A HOLDER-LED;-,POM(M90-44),-,BLK,-,X-9 S601S AC61-21008A HOLDER-SENSOR;-,POM(M90-44),-,BLK,-,X-9 S602S AC61-21008A HOLDER-SENSOR;-,POM(M90-44),-,BLK,-,X-9 TM401B

Refer to table below

CONNECTOR BOARD-ASSY;HIPS94

COUNTRY MODELS

1 21 101 TM401B

FRANCE

SV-632FT AC97-00960A AC64-00375A AC64-00076E AC61-00021H

SV-632FG AC97-00862A AC64-00353A AC64-00076C AC61-00021H

SV-432FT AC97-00961A AC64-00375B AC64-00076E AC61-00021E SV-432FS AC97-00881A AC64-00353E AC64-00076A AC61-00021E

SV-432FG AC97-00975A AC64-00375L AC64-00076C AC61-00021E

SV-432FB AC97-00880A AC64-00353D AC64-00076B AC61-00021E SV-232FT AC97-00962A AC64-00375C AC64-00076E AC61-00021E SV-232FS AC97-00978A AC64-00375P AC64-00076A AC61-00021E

SV-232FG AC97-00883A AC64-00353G AC64-00076C AC61-00021E

SV-232FB AC97-00882A AC64-00353F AC64-00076B AC61-00021E

U.K.

SV-632B AC97-00970A AC64-00353X AC64-00076C AC61-00021J SV-234B AC97-00971A AC64-00353Y AC64-00076A AC61-00021G SV-232B AC97-00863A AC64-00353T AC64-00076B AC61-00021G

GERMANY

SV-632X AC97-00972A AC64-00353Z AC64-00076A AC61-00021J SV-232XB AC97-00973A AC64-00375D AC64-00076B AC61-00021F SV-232XS AC97-00884A AC64-00353H AC64-00076A AC61-00021F SV-232XG AC97-00885A AC64-00353J AC64-00076C AC61-00021F

SV-232XM AC97-00886A AC64-00353K AC64-00076A AC61-00021F

AUSTRIA

SV-232X AC97-00887A AC64-00353L AC64-00076A AC61-00021F

SWITZERLAND

SV-232X AC97-00887A AC64-00353L AC64-00076A AC61-00021F

SPAIN

SV-632X AC97-00974A AC64-00375E AC64-00076C AC61-00021J

SV-234X AC97-00889A AC64-00353M AC64-00076C AC61-00021F

SV-232X AC97-00888A AC64-00353U AC64-00076A AC61-00021F

PORTUGAL

SV-232X AC97-00890A AC64-00353N AC64-00076A AC61-00021F

ITALY

SV-232XS AC97-00891A AC64-00353P AC64-00076A AC61-00021F SV-232XB AC97-00864A AC64-00353Q AC64-00076B AC61-00021F

NETHERLAND

SV-632X AC97-00866A AC64-00353B AC64-00076C AC61-00021J

SV-232X AC97-00892A AC64-00353R AC64-00076C AC61-00021G

DENMARK

SV-632X AC97-00866A AC64-00353B AC64-00076C AC61-00021J

SV-232X AC97-00892A AC64-00353S AC64-00076C AC61-00021G

SWEDEN

SV-232X AC97-00892A AC64-00353S AC64-00076C AC61-00021G

NORWAY

SV-232X AC97-00892A AC64-00353R AC64-00076C AC61-00021G

GREECE

SV-232X AC97-00892A AC64-00353R AC64-00076C AC61-00021G

U.A.E.

SV-232G AC97-00957A AC64-00375G AC64-00076A AC61-00021D

SAUDI ARABIA

SV-250G AC97-00977A AC64-00375N AC64-00076A AC61-00021D

IRAN

SV-250G AC97-00976A AC64-00121A AC64-00076A AC61-00021D

MALAYSIA

SV-232G AC97-00957A AC64-00375G AC64-00076A AC61-00021D

THAILAND

SV-D200B AC97-00867A AC64-00353C AC64-00076B AC61-00021D

SV-D200M AC97-00894A AC64-00353V AC64-00076A AC61-00021D

SV-D200G AC97-00895A AC64-00353W AC64-00076C AC61-00021D

SOUTH AFRICA

SV-222I AC97-00958A AC64-00375H AC64-00076A AC61-00021D

AFRICA

SV-D22K AC97-00959A AC64-00375J AC64-00076A AC61-00021D

Exploded View and Parts List

3-4 Samsung Electronics

3-2 Mechanical Parts (Top Side)

G001

K250

K248

K110

K502

K350

K330

K182

K140

K490

K530

K240

G532

G420

G450

K546

G510

B410

B440

B444

B446

B448

B452

G527

G520

G480

G680

S.N.A.

G530

K340

B473

K188

G555

G546

S.N.A. : Service Not Available

S.N.A.

+ 32 hidden pages