Samsung Svr-639, Svr-630, Svr-633, SVR-537-XEV, SVR-639-XEV Service Manual

VIDEO CASSETTE RECORDER

SVR-639 SVR-633 SVR-630 SVR-537

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).

SERVICE MANUAL

SVR-639/633/630/537

ELECTRONICS

Printed in Korea

AC68-00887A

SVR-639

SVR-633

SVR-630

SVR-537

SRC PLAY

STANDBY/ON

REC STOP PLAY

PROG

EJECT

STANDBY/ON

LINE IN 2

REW

F.F

VIDEO L AUDIO R

EJECT

STANDBY/ON

REW F.F

PLAY

PROG

REC STOP

REC PLAY

STANDBY/ON EJECT STOP

SHARPNESS

REW

F.F

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

IMPORTANT SERVICE GUIDE

3 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

3 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)

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 protective 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).

5. With the unit completely reassembled, plug the AC

line cord directly the power outlet. With the unitÕs AC switch first in the ON position and then OFF, measure the current between a known earth 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. X-ray Limits :

The picture tube is designed to prohibit X-ray emissions. To ensure continued X-ray protection, replace the picture tube only with one that is the same type as the original.

Fig. 1-1 AC Leakage Test

7. Antenna Cold Check : With the unitÕs 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.

8. High Voltage Limit : High voltage must be measured each time servicing is done on the B+, horizontal deflection or high voltage circuits.

Heed the high voltage limits. These include the X-ray protection Specifications Label, and the Product Safety and X-ray Warning Note on the service data schematic.

9. Some semiconductor (Òsolid stateÓ) 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.

10. 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.)

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. High voltage is maintained within specified limits by close-tolerance, safety-related components and adjustments. If the high voltage exceeds the specified limits, check each of the special components.

12. 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 manufacturerÕs warranty.

13. Hot Chassis Warning : Some TV receiver chassis are electrically connected directly to one conductor of the AC power cord. If an isolation transformer is not used, these units may be safely serviced only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC source.

To confirm that the AC power plug is inserted correctly, do the following : Using an AC voltmeter, measure the voltage between the chassis and a known earth ground. If the reading is greater than 1.0V, remove the AC power plug, reverse its polarity and reinsert. Re-measure the voltage between the chassis and ground.

14. Some TV chassis are designed to operate with 85 volts AC between chassis and ground, regardless of the AC plug polarity. These units can be safely serviced only if an isolation transformer inserted between the receiver and the power source.

15. 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.

16. Always connect a test instrumentÕs ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrumentÕs ground lead last.

17. 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.

18. Picture Tube Implosion Warning : The picture tube in this receiver employs Òintegral implosionÓ protection. To ensure continued implosion protection, make sure that the replacement picture tube is the same as the original.

19. Do not remove, install or handle the picture tube without first putting on shatterproof goggles equipped with side shields. Never handle the picture tube by its neck. Some Òin-lineÓ picture tubes are equipped with a permanently attached deflection yoke; do not try to remove such Òpermanently attachedÓ yokes from the picture tube.

20. 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. A replacement 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

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

VCR STANDBY/ON

TV STANDBY/ON

SLOW

VCR

DISP./

SHUTTLE

V-LOCK

CLR/RST F.ADV

-/--

INPUT INDEX

VOL PROG/TRK

REPEAT

SAT

X-Point (Tracking Center) Adjustment

("5" Button)

Head Switching Adjustment

("SPEED" Button)

NVRAM Option Setting

("MENU" Button)

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) TP301 (Video output)

TP602 (Control Pulse) 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)

3) Select the option number (See Table 2-1) 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)

5) Press the “OK” button of remote control again to store the option number. (“PLEASE WAIT” is displayed for a second as shown Fig. 2-5 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

OPTION DIODE

CNG : SAVE : OK

Fig. 2-4

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

OPTION DIODE

CNG : SAVE : OK

PLEASE WAIT

Fig. 2-5

MODELS OPTION NUMBER

SVR-639 2, 6, 8, 11, 12, 13, 16, 18, 19, 20, 21, 22, 25, 30, 31, 32, 33, 37, 41, 44, 46, 50, 54 SVR-633 6, 8, 11, 12, 13, 17, 18, 22, 25, 30, 31, 32, 35, 41, 42, 44, 45, 46, 50, 54 SVR-630 8, 11, 12, 13, 17, 18, 22, 25, 30, 31, 32, 35, 37, 38, 41, 42, 46, 50, 54 SVR-537 9, 10, 11, 13, 17, 18, 20, 22, 30, 31, 32, 34, 39, 40, 42, 45

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

3-6

3-8

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

F-A/V JACK PCB (S.N.A.)

SVR-633

S601S

LD601S

S602S

VFD/LED PCB (S.N.A.)

102

157

SVR-630

158

SVR-639

101

155

156

UT01

157

SHUTTLE PCB (S.N.A.)

CN703A

SVR-537

VCR STANDBY/ON

TV STANDBY/ON

SLOW

VCR

DISP./

SHUTTLE

V-LOCK

CLR/RST F.ADV

-/-INPUT INDEX

VOL PROG/TRK

REPEAT

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 31 AC64-00072R DOOR FRONT-ASSY SVR-639 ONLY 52 62664-0021-00 ASSY-DAMPER SVR-639 ONLY 55

Refer to table below

KNOB-SHUTTLE-,ABS,-,94HB 101

Refer to table below

CABINET-TOP;X-9,SECC,PCM,0.5,360*208*41, 102 AC63-32128A COVER-BOTTOM;SV-C140F,SECC,387.7X197.6 153 AC60-12126A SCREW-BH;-,BH,-,4*12,FE,FZY,-,-,155 AC60-12134A SCREW-TAP BH;-,BH,-,2-4X16,-,FE 156 AC60-00001A SCREW-MACINE;-,BH,*4X12,M4,L12,BLK,SMC 157 AC60-10063A SCREW-TAPTITE;BH,+,-,M3,L12,ZPC3,SWRCH18 158 AC60-00069A SCREW-TAP;3X10,FE, FEY 200 AC39-10019A POWER CORD;KKP-419C,H03VVH2-F,VDE/KEMA-K CN3A1S 3809-001111 CABLE-FLAT;30V,80C,130mm,7P,1.25mm,UL289 CN602A 3809-001049 CABLE-FLAT;30V,80C,100mm,5P,1.25mm,UL289 CN703A 3809-001132 CABLE-FLAT;30V,80C,130mm,5P,1.25mm,UL289 SVR-633/537 ONLY 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 UT01

Refer to table below

REMOCON-ASSY

MODELS 1 21 55 101 TM401B UT01

SVR-639 AC97-00243H AC64-52158T - AC64-30899F AC61-00060K AC59-00010P SVR-633 AC97-00871A AC64-00203M AC64-00319B AC64-30899F AC61-00060E AC59-00016F SVR-630 AC97-00621M AC64-00177C - AC64-30899A AC61-00060E AC59-00016F SVR-537 AC97-00621K AC64-00069C AC64-00336A AC64-30899A AC61-00060E AC59-00013B

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.

+ 28 hidden pages