Samsung DVD-V52K, DVD-V55K, DVD-V72K, DVD-V85K, DVD-V12000 Service Manual

SERVICE

1. Precautions

2. Product Specifications

3. Disassembly and Reassembly

4. Alignment and Adjustment

5. Troubleshooting

6. Exploded View and Parts List

7. Electrical Parts List

8. Block Diagram

9. PCB Diagrams

10. Schematic Diagrams

Manual

DVD-VCR COMBINATION CONTENTS

SERVICE MANUAL DVD-V85K/V72K/V55K/V52K/V52/V12500/V12000/SV-DVD2EK

© Samsung Electronics Co., Ltd. MAY. 2002

Printed in Korea

AK82-00212A

DVD-V85K/V72K/V55K/V52K

DVD-V12500/V12000/SV-DVD2EK

DVD-V52

STANDBY/ON

/ I

REW PLAY F . F STOP REC

OPEN/CLOSE

VOLUME

ECHO

SELECT COPY

PROG

EJECT

MIC1 MIC2

STANDBY/ON

COPY VOLUME KEY CONTROL

ECHO

MIC1 MIC2

REC

REW

STOP SELECT

F.F

OPEN/CLOSE

EJECT

PLAY

SELECT

TRACKING REC INPUT SEL.

EJECT

OPEN/CLOSE

AUDIOVIDEO

LINE IN 2

STANDBY/ON

COPY

ELECTRONICS

For mechanical disassembly and adjustment, refer to the “Mechanical Manual” (TS-10A AC82-00023A).

DVD-VCR COMBINATION

Chassis : 3’nd Generation
DVD-V52 / DVD-V55K / DVD-V72K /

DVD-V85K

DVD-V12000 / DVD-V12500

DVD-V52
SV-DVD2EK

Samsung Electronics 1-1

1. Precautions

1-1 Safety 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 sny 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. A replacement
part that does not have the same safety
characteristics as the original might create shock,
fire or other hazards.

Precautions

1-3Samsung Electronics

1-2 Handling the optical pick-up

The laser diode in the optical pick up may suffer elec­trostatic breakdown because of potential static elec­tricity from clothing and your body.

The following method is recommended.
(1) Place a conductive sheet on the work bench (The

black sheet used for wrapping repair parts.)

(2) Place the set on the conductive sheet so that the

chassis is grounded to the sheet.

(3) Place your hands on the conductive sheet(This

gives them the same ground as the sheet.)

(4) Remove the optical pick up block

(5) Perform work on top of the conductive sheet. Be

careful not to let your clothes or any other static
sources to touch the unit.

♦ Be sure to put on a wrist strap grounded to the

sheet.

♦ Be sure to lay a conductive sheet made of copper

etc. Which is grounded to the table.

Fig.1-2

(6) Short the short terminal on the PCB, which is in-

side the Pick-Up ASS’Y, before replacing the Pick­Up. (The short terminal is shorted when the Pick­Up Ass’y is being lifted or moved.)

(7) After replacing the Pick-up, open the short termi-

nal on the PCB.

THE UNIT

WRIST-STRAP
FOR GROUNDING

1M

1M

CONDUCTIVE SHEET

Precautions

1-4 Samsung Electronics

1-3-1 Disassembly

1) Remove the power cord.

2) Disassemble the Deck-Assy.

3) Make solder land 2 points short on Pick-up.

(See Fig. 1-3)

4) Disassembly the Pick-up.

1-3-2 Assembly

1) Replace the Pick-up.

2) Remove the soldering 2 points on Pick-up.

3) Reassemble the Deck-Assy.

SOLDER LAND 2 POINTS SHORT

PICK-UP ASS'Y

Note : If the assembly and disassembly are not done in correct sequence, the Pick-up may be damaged.

Fig. 1-3

1-3 Pick-up disassembly and reassembly

Samsung Electronics 2-1

2. Product Specifications

Power Requirements AC110-240V, 50/60Hz (AC 220-240V : AUSTRALIA Model)

Power Consumption 25Watts

GENERAL

Weight 4.5kg

Dimensions W 430mm x D 330mm x H 94mm

Operating ambirnt Temperature +5°C ~ +35°C

Installation conditions Operation position : Horizontal,

Ralative humidity : Below 75%

INPUT

Video input (Rear) RCA jack : 1.0Vp-p (unbalanced) 75Ω

Audio input (Rear) RCA jack : -8dBm, 47Kohm unbalanced

RF out UHF 21-69 (Initial CH36), UHF 28-69 (Inital CH38 : AUSTRALIA Model)

Audio (DVD, VCR) RCA jack

OUTPUT

Audio (DVD only) Digital audio out (OPTICAL, COAXIAL)

Video (DVD, VCR) RCA jack

Video (DVD only) S-Video out

Component out : RCA jack

Tape format VHS type video tape,

S-VHS type video tape (Playback only)

Color system PAL, MESECAM, NTSC4.43, NTSC playback on PAL TV, NT3.58(OPTION)

VCR

Tuning system B/G, D/K(OPTION), I(OPTION), M(OPTION)

Video S/N Above 43dB (standard recording)

Resolution Above 240 lines (standard recording)

Audio S/N Above 68dB (Hi-Fi), 38dB (Mono)

Audio frequency characteristics 20Hz - 20KHz (Hi-Fi)

Disc DVD, CD (12cm), CD (8cm), VIDEO-CD (12cm), MP3, CD-R(RW)

DVD Audio S/N 95dB

Audio dynamic range 105dB

Product Specifications

2-2 Samsung Electronics

MEMO

Samsung Electronics

3-1

3. Disassembly and Reassembly

3-1 Cabinet and PCB

3-1-1 Cabinet Top Removal

Lift up the Cabinet Top in the direction of arrow.

ΠREMOVE
3 SCREWS

Fig. 3-1 Cabinet Top Removal

3-1-3 Ass’y Front Panel Removal

ΠRELEASE 4 HOOKS

´ RELEASE 3 HOOKS

(Top View)

(Bottom View)

Fig. 3-3 Ass’y Front Panel Removal

3-1-2 Bottom Cover/Decoration-LEG Removal

ΠREMOVE 3 SCREWS

Fig. 3-2 Bottom Cover/Decoration-LEG Removal

3-1-4 Function-Timer PCB Removal

ΠRELEASE 4 HOOKS

Fig. 3-4 Function-Timer PCB Removal

3-2

Disassembly and Reassembly

Samsung Electronics

3-1-5 Chassis Removal

¨ REMOVE 3 SCREWS

´ REMOVE 2 SCREWS

ˇ REMOVE 2 SCREWS

ΠREMOVE CONNECTORS

DVD MAIN PCB

DVD-DECK

VCR MAIN PCB

Fig. 3-5 Chassis Removal

3-1-6 VCR Main PCB Removal

ΠREMOVE 3 SCREWS

MODE SWITCH

When installing the ass'y full deck on the Main PCB,

be sure to align the assembly point of mode switch.

ASSEMBLY POINT

Fig. 3-6 VCR Main PCB Removal

Disassembly and Reassembly

3-3

Samsung Electronics

3-2 Circuit Board Locations

DVD MAIN PCB

FUNCTION-TIMER PCB

VCR MAIN PCB

Fig. 3-7 Circuit Board Locations

3-4

Disassembly and Reassembly

Samsung Electronics

3-3 DVD Deck

3-3-1 Tray Disc Removal

1) Insert a Screw Driver Œ into Emergency Hole ´ and push the Slider Housing ˇ in the direction arrow “A”.

2) When the Tray Disc ¨ comes out a little, pull it in the direction arrow “B” by hand.

3) Pull the Tray Disc ¨ to disassemble , while simultaneously pushing 2 Stoppers ˆ (left, right) in the direction

arrow “C”, “D”.

Fig. 3-8 Tray Disc Removal

"A"

ΠSCREW DRIVER

´ EMERGENCY HOLE

ˇ SLIDER HOUSING

¨ TRAY DISC

"B"

"C"

ˆ STOPPER

ˆ STOPPER

"D"

Disassembly and Reassembly

3-5

Samsung Electronics

3-3-2 Assy P/U Deck Removal

1) Disconnect DCN2 Œ, DCN3 ´.

2) Lift down the Ass’y P/U Deck ˇ while simultaneously pushing 2 Hooks ¨, ˆ in the direction of arrow

“A”, “B”.

Fig. 3-9 Assy P/U Deck Removal

ΠDCN2

ˆ HOOK

¨ HOOK

´ DCN3

ˇ ASSY- P/U DECK

"A"

"B"

<Assembly Point>

SLIDER HOUSING

3-6

Disassembly and Reassembly

Samsung Electronics

3-3-3 Housing Ass’y Removal

1) Remove Belt Œ.

2) Push the Hook ´ in the direction arrow “A” and lift up Pulley Gear ˇ.

3) Push the Slider Housing ˆ in the direction arrow “B” and lift up the Gear Tray ¨.

4) Lift up the Slider Housing ˆ.

5) Remove the soldering Ø of 2 points (Red, Black).

6) Remove 2 Screws ∏ and lift down the Motor Load Ass’y ”.

7) Push the 3 Hooks ’ bottom side in the direction arrow “C” and lift up the Housing PCB ˝.

8) Push the Hooks Ô and remove Deck PCB .

Fig. 3-10 Housing Ass’y Removal

ΠBELT

ˇ PULLEY GEAR

¨ GEAR TRAY

” MOTOR LOAD ASSY

’ 3 HOOKS

˝ HOUSING PCB

Ô HOOK

Ø SOLDERING

∏ 2 SCREWS

ˆ SLIDER HOUSING

´ HOOK

"A"

"B"

<Bottom Side>

"C"

"C"

"C"

Disassembly and Reassembly

3-7

Samsung Electronics

3-3-4 Sub Chassis Removal

1) Remove the Soldering of Motor Feed (+, - wire) Œ.

2) Remove the 4 Screws ´.

3) Lift up the Ass’y Brkt Deck ˇ.

Fig. 3-11 Sub Chassis Removal

´ 4 SCREWS

ˇ ASSY-BRAK DECK

ΠSOLDERING OF

MOTOR FEED (+, - WIRE)

+

3-8

Disassembly and Reassembly

Samsung Electronics

3-3-5 Ass’y Brkt Deck Removal

1) Remove Washer Œ.

2) Remove Gear Feed B ´ , Gear Feed A ˇ.

3) Remove 2 Screws ¨.

4) Remove Shaft Pick-Up ˆ and Pick-Up Ass’y Ø.

5) Remove 1 Screw ∏.

6) Remove 2 Screws ”.

7) Remove 3 Spring Spindle ’ and Motor Spindle Ass’y ˝.

Fig. 3-12 Ass’y Brkt Deck Removal

¨ 2 SCREWS

ΠWASHER

´ GEAR FEED B

” 2 SCREWS

∏ 1 SCREW

ˆ SHAFT PICK-UP

ˇ GEAR FEED A

Ø PICK-UP ASS'Y

’ SPRING SPINDLE

˝ MOTOR SPINDLE

Samsung Electronics

4-1

4. VCR Alignment and Adjustments

4-1 Reference

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

2) When replacing the VCR Main PCB 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) How to adjustment.

- Press the “SW709/SW707 (TEST)” button on Function-Timer PCB to set the adjustment mode.

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

4-1-1 Location of adjustment button of remote control

Fig. 4-1

NVRAM Option Setting

; "DISC MENU"

2

3

4

5

6

78

9

0

+

-

SHUTTLE

OPEN/CLOSE

STANDBY/ON

AUDIO

3D SOUND SCREEN FIT CLEAR

DVD VCR

INPUT SEL.

ZOOM

VOLUME PROG

DIGEST

F.ADV/STEP

REC

DISC MENU

SETUP
/ENTER

RETURN TITLE SUBTITLE MARK

A. DUB SPEED TIMER INDEX

MODE/
REPEAT

KARAOKE

SVHS

DISPLAY

CLOCK/

COUNTER

ANGLE

VIEW

KARAOKE SEARCH

TRK AUTO TRK

X-Point (Tracking Center)

Adjustment ; "5"

Head Switching

Adjustment ; "SPEED"

4-2

Alignment and Adjustments

Samsung Electronics

4-1-2 TEST location for adjustment mode setting

Fig. 4-2 Function-Timer PCB (Top View)

TEST (SW709) BUTTON

TEST (SW707) BUTTON

TEST (SW709) BUTTON

<DVD-V85K/V72K/V55K/V52K>

<DVD-V12500/V12000/SV-DVD2EK>

<DVD-V52>

Alignment and Adjustments

4-3

Samsung Electronics

Test point : TP2 (Audio Output)

TP3 (Envelope)
TP4 (H’D S/W -Trigger)
TP5 (Control Pulse)

Fig. 4-3 Location of Test point (VCR Main PCB-Top View)

AUDIO OUTPUT

CONTROL PULSE

HEAD SWITCHING

ENVELOPE

4-2 Mechanical Adjustment

Note : Refer to the Mechanical Manual “TS-10A (AC82-00023A)” for the adjustment and confirmation of ass’y full

deck.

4-2-1 The number and position of test point

4-2-2 ACE Head position (X-Point) Adjustment

(See the 4-2-1(d) ACE Head Position (X-Point) Adjustment
on page 4-2 of the Mechanical Manual)

1) Playback the alignment tape (Color bar).

2)

Press the “SW709/SW707 (TEST)” button on F/Timer
PCB to set the adjustment mode. (See Fig. 4-2)

3) Press the “5” button of remote control then
adjustment is operated automatically. (See Fig. 4-1)

4) Connect the CH-1 probe to TP3 (Envelope) the
CH-2 probe to TP4 (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.

4-4

Alignment and Adjustments

Samsung Electronics

4-3 Head Switching Point Adjustment

1) Playback the alignment tape.

2) Press the “SW709/SW707(TEST)” button on Function-Timer PCB to set the adjustment mode. (See Fig. 4-2)

3) Press the “SPEED” button of remote control then adjustment is operated automatically. (See Fig. 4-1)

4-4 NVRAM Option Setting

1) Press the “SW709/SW707(TEST)” button on Function-Timer PCB to set the adjustment mode. (See Fig. 4-2)

2)

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

3)

Select the option number (See table 4-1) of corresponding model with “ , , ▲, ▼” button on the remote control.

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

5) Press the “RETURN” button of remote control again to store the option number.

6) Turn the Power off.

1) NVRAM Option is adjusted at production line basically.

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

CNG:OK SAVE : RETURN

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
57 58 59 60 61 62 63 64
65 66 67 68 69 70 71 72

Fig.4-4

<Table 4-1 NVRAM Option Table>

COUNTRY MODELS OPTION NUMBER

China DVD-V85K 6, 7, 8, 9, 10, 12, 20, 22, 26, 28, 29, 33, 35, 42, 44, 47, 51, 57, 60, 61, 63, 69, 70

H.K DVD-V85K 6, 7, 8, 9, 10, 12, 20, 22, 25, 28, 29, 35, 36, 42, 44, 47, 51, 57, 60, 61, 63, 69

DVD-V52 9, 10, 12, 15, 20, 22, 33, 34, 35, 36, 38, 40, 42, 44, 47, 50, 52, 57, 60, 61, 63, 68

Thailand DVD-V55K 6, 9, 10, 12, 20, 22, 33, 34, 35, 36, 40, 42, 44, 47, 51, 52, 57, 60, 61, 63, 68, 69

DVD-V52 9, 10, 12, 15, 20, 22, 33, 34, 35, 36, 38, 40, 42, 44, 47, 50, 52, 57, 60, 61, 63, 68

Malaysia/Indonesia DVD-V85K 6, 7, 8, 9, 10, 12, 20, 22, 25, 28, 29, 35, 36, 42, 44, 47, 51, 57, 60, 61, 63, 69

India/Vietnam/Singapore DVD-V52 9, 10, 12, 15, 20, 22, 33, 34, 35, 36, 38, 40, 42, 44, 47, 50, 52, 57, 60, 61, 63, 68

Iran DVD-V12000 6, 9, 10, 12, 20, 22, 33, 34, 35, 36, 40, 42, 44, 47, 52, 56, 57, 60, 61, 63, 68, 69

DVD-V12500 6, 9, 10, 12, 20, 22, 33, 34, 35, 36, 40, 42, 44, 47, 52, 56, 57, 60, 61, 63, 68, 69

UAE/Egypt DVD-V55K 6, 9, 10, 12, 20, 22, 33, 34, 35, 36, 40, 42, 44, 47, 51, 52, 55, 57, 60, 61, 63, 68, 69

Saudi Arabia/Lebanon DVD-V52K 9, 10, 12, 20, 22, 33, 34, 35, 36, 40, 42, 44, 47, 51, 52, 55, 57, 60, 61, 63, 68, 69

CIS SV-DVD2EK 6, 9, 10, 12, 20, 33, 34, 35, 36, 40, 42, 44, 47, 52, 54, 57, 60, 61, 63, 68, 69

Australia DVD-V72K 1, 6, 7, 9, 10, 12, 20, 28, 33, 34, 42, 44, 47, 51, 52, 53, 57, 60, 61, 63, 69

South Africa DVD-V55K 6, 9, 10, 12, 20, 33, 34, 35, 36, 40, 42, 44, 47, 51, 52, 53, 57, 60, 61, 63, 68, 69

DVD-V52K 9, 10, 12, 20, 33, 34, 35, 36, 40, 42, 44, 47, 51, 52, 53, 57, 60, 61, 63, 68, 69

Samsung Electronics 5-1

5. Troubleshooting

(VCR Section)

EE-VIDEO

Insert the

cassette tape recorded by

another VCR and press

PLAY Button

See (Video Missing in EE Mode)

Yes

Play Indicator

in the display

Yes

Yes

No

Mechanism

operation

See (Mechanism doesn't

operate in play mode)

Yes

No

PB-VIDEO

See

(Video missing in play mode)

See (PB VIDEO)

audio mising in play mode

Yes

No

Press PLAY key in

remote control

Check IC601-58

Check Timer

Yes

NoNo

Play Mode Inoperative

No Power

(Standby LED OFF)

Fuse F1SS01 is OK?

AL5.8V D1SS14.

Check IC701, DT701.

Change Fuse F1SS01.

Check Trans PT1S01.

Yes

Yes

No

AL5V

IC601-14, 92, 69, 70, 41.

Check D620, D692, L605.

No

AL5.8V BD1SS4.

(VCR MAIN PCB)

Check CN701 Wafer

Yes

No

Yes

Check CN701 Connector Wafer.

AL5V IC701-5, 20.

No

Data IN, OUT, CLK

IC701-2, 3, 4.

Yes

No

No

Yes

Troubleshooting

5-2 Samsung Electronics

CAPSTAN

ROTATION

(S.T REEL)

IC601-98, 99

PROG.SW STATE

IC601-76, 77, 78

CHANGE IC601

CHECK

LOADING MOTOR

MECHANISM OR SW601

TAKE UP REEL SENSOR

SUPPLY REEL SENSOR

(PT601.PT602)

SEE

(CAPSTAN DOES NOT

ROTATE)

NO

DC

STOP MODE

YES

PULSE

YES

A

LOAD A TAPE AND

PRESS PLAY BUTTON

TURN VCR POWER ON

MECHANISM DOESN'T

OPERATE IN PLAY MODE

TAPE LOADING

OPERATION

(LOAD)

IC601-74:HIGH

IC601-75:LOW

(END SENSOR)

IC601-74

CYLINDER

ROTATION

SW 25Hz

IC601-24

CYL FG.PG

IC601-97

SEE IC601-9,

(CYLINDER DOES

NOT ROTATE)

CHECK

START/END SENSOR (S601/S602)

IC601

NO NO

NO

NO

LOW

YES

YES

HIGH

YES

YES

CHECK TAPE AND END SENSOR

CHECK LM B+ AND LM

(VCR Section)

A

Troubleshooting

5-3Samsung Electronics

LOAD TAPE AND

PRESS F.FWD BUTTON

FAST FORWARD

DOESN'T OPERATE

F.FWD

INDICATOR IN

THE DISPLAY

PRESS FF

KEY IN REMOTE

CONTROL

MECHANISM

STATE

IC601-76, 77, 78

CHECK

MECHANISM

CHECK TIMER

CHANGE IC601-58

NO NO

YES

STOP

CAPSTAN MOTOR

ROTATION

SEE

(CAPSTAN DOES NOT

ROTATE)

SEE

(MECHANISM DOES NOT

OPERATE IN PLAY MODE)

STOP

YES

F.FWD

ROTATE

(VCR Section)

RECORD MODE

DOESN'T OPERATE

PLAY

OPERATION

LOAD VCR WITH A

BLANK TAPE AND

PRESS RECORD BUTTON

REC MODE

SAFETY TAB

SEE

(AUDIO MISSING IN

RECORD MODE)

CHANGE SW602 (REC SW)

CHANGE TAPE

SEE

(PLAY MODE

DOESN'T OPERATE)

EJECT NO

NO

YES

REC-VIDEO

SEE

(VIDEO MISSING IN

RECORD MODE)

NO

YES

YES

YES

(VCR Section)

Troubleshooting

5-4 Samsung Electronics

LOAD A TAPE

REWIND DOESN'T

OPERATE

F.FWD

OPERATION

PRESS REWIND

BUTTON

REW

INDICATOR IN

THE DISPLAY

PRESS REW

KEY IN REMOTE

CONTROL

MECHANISM

STATE

IC601-54, 55, 56

CHECK

MECHANISM

CHECK TIMER

CHECK

IC601-58

SEE

(FAST FORWARD

DOESN'T WORK)

NO

NO

NO

YES

STOP

DOES CAPSTAN

MOTOR

ROTATE?

CHECK

IC601-25

(CM F/R)

SEE

(MECHANISM DOES NOT

OPERATE IN PLAY MODE)

NO

YES

YES

REW

YES

(VCR Section)

FWD SEARCH DOESN'T

OPERATE

PLAY

OPERATION

PRESS F.FWD FOR

FORWARD SEARCH

CHECK IC601

CHECK CAPSTAN

MOTOR

IS CAPSTAN

SPEED CHANGED?

SEARCH

OPERATION

NOISE BAR

LOCKING

END

ADJUST

A/CE HEAD

CHANGE DECK

CHANGE IC601

SEE

(PLAY DOESN'T OPERATE)

NO

NO

NO

YES

NO

(CONTROL PULSE)

IC601-89

NO

YES

YES

YES

YES

(VCR Section)

Troubleshooting

5-5Samsung Electronics

TURN THE VCR

POWER ON AND

INSERT A TAPE

PRESS EJECT BUTTON

CASSETTE LOADING

MECHANISM

DOES NOT OPERATE

TAPE DETECTED

CST IN MODE

IC601-74:HIGH(5V)

IC601-75:LOW(0V)

CHANGE IC601

CHECK

START/END SENSOR

IC601

CHECK

DM B

+

LINE

CHANGE CAPSTAN MOTOR

NO NO

NO

YES

IC601-39 (5V)

IC601-38 (0V)

IC601-38 (5V)

IC601-39 (0V)

CHECK

CASSETT LOADING

MECHANISM

YES

YES

NO

CN604-8 (12.5V)

YES

NO

YES

(VCR Section)

REV. SEARCH DOESN'T

OPERATE

PLAY

OPERATION

PRESS REWIND BUTTON

FOR REV. SEARCH

CHECK CAP F/R LINE

IS CAPSTAN

SPEED CHANGED?

SEARCH

OPERATION

FWD SEARCH

END

CHECK IC601

CHANGE DECK

CHANGE IC601

SEE

(PLAY DOESN'T OPERATE)

NO

(PLAY MODE)

NO

YES

CAP F/R

IC601-25

HIGH

(SEARCH MODE)

YES

NO LOW

CHECK IC601

H'D AMP/ENV COMP.

CHECK CAPSTAN

MOTOR

NOISE BAR

LOCKING

ADJUST

A/CE HEAD

NO

(CONTROL PULSE)

IC601-89

NO

YES

YES

YES

(VCR Section)

Troubleshooting

5-6 Samsung Electronics

VIDEO MISSING IN

RECORD MODE

PLACE THE VCR

RECORD MODE

VIDEO EE MODE

OPERATION

VIDEO SIGNAL

IC301-48, 50, 52

VIDEO SIGNAL

IC301

CHECK VIDEO HEAD

CHECK

IC301, C354

SEE

(VIDEO MISSING IN EE MODE)

NO

YES

(VCR Section)

VIDEO SIGNAL

IC301-59

CHECK

C340

FM VIDEO

IC301-78

CHANGE

Q307, C3Q4

FM VIDEO

IC301-88 (LP)

IC301-94 (SP)

CHECK

CN301 CONNECTION

PLACE VCR IN STOP MODE

VIDEO MISSING IN

EE MODE

TUNER MODE

OPERATION

NO

NO

NO

VIDEO SIGNAL

IC301-48

APPLY VIDEO SIGNAL

TO FRONT VIDEO INPUT JACK AND

SET TO LINE MODE BY INPUT SEL BUTTON.

CHECK JC803

VIDEO SIGNAL

CHECK IC301-61 TO

JC803 LINE

CHECK

DVD-V85K

TO TV CONNECTION.

NO

YES

YES

YES

YES

YES

YES

NO

VIDEO SIGNAL

JC803

YES

VIDEO SIGNAL

IC301-61

VIDEO SIGNAL

IC301-50

CHECK TM401

ANTENNA IN

CHECK IC301-48 TO

TM401-24 LINE

NO

VIDEO SIGNAL

TM401-24

CHECK IIC CLK,

DATA LINE

CHECK IC301

NO

IIC CLK, DATA

IC301-68, 69

(VCR Section)

Troubleshooting

5-7Samsung Electronics

COLOR MISSING IN

RECORD MODE

(VIDEO IN)

RECORD MODE

COLOR SIGNAL

IC301-58

COLOR-KILLER

IC301-33(2V)

CHANGE IC301

CHANGE IC301

CHECK THE REC LINE

CHANGE XT301

CHECK XT301

SEE PAGE 5-6

(VIDEO MISSING IN RECORD

MODE)

YES

NO

YES

NO

YES

YES

NO

NO

(VCR Section)

VIDEO MISSING IN

PLAY MODE

VIDEO EE MODE

OPERATION

PLACE THE VCR PLAY MODE

CHANGE IC301 CHECK IC6P01, Q6P01, R6P10

CHECK

CN301 CONNECTION

CHECK

Q3Q1, C395

CHECK

IC601-24

CHECK VIDEO

OUT LINE

SEE PAGE 5-6

(VIDEO MISSING IN EE MODE)

NO

YES

YES

NO

YESYES

VIDEO FM

IC301-21

VIDEO SIGNAL

IC301-78

VIDEO SIGNAL

IC301-65

VIDEO SIGNAL

IC6P01-13

NO

H'D SW

IC301-70

NO

YES

YES

YES

NO NO

(VCR Section)

Troubleshooting

5-8 Samsung Electronics

OSD PICTURE MISSING

CHECK

IC301-65

CHECK

IC6P01-13

CHANGE

IC6P01

CHECK IC6P01-9, 10, 11

SEE PAGE 5-7

(VIDEO MISSING IN PLAY MODE)

NO

NO

YES

NO

(VCR Section)

COLOR MISSING IN

PLAY MODE

FM-ENV

IC301-25

COLOR SIGNAL

IC301-58

COLOR-KILLER

IC301-33(2V)

COLOR-ROTARY

IC301-70

CHANGE

IC301

CHECK IC301-27, 34

XT301

CHECK IC601-29

SEE PAGE 5-7

(VIDEO MISSING IN PLAY MODE)

NO

NO

NO

YES

YES

NO

YES

(VCR Section)

CHECK

IC301-61

Troubleshooting

5-9Samsung Electronics

CHECK

(AUDIO MISSING IN EE MODE)

PLACE IN PB MODE

AUDIO MISSING IN

PB MODE

CHANGE IC501

YES

IC501-78, 80

NO

AUDIO SELECT

CHECK C3A16

MONO

HI-FI

IC301-5

AUDIO SIGNAL

NO

YES

CHECK

C3A17 AND CHANCE IC301

IC301-6

DC : 2.3V

YES

NO

(VCR Section)

CHECK ACE HEAD

R3A07, R3A08, R3A06, C3A15

AND CHANGE IC301

CHECK IC501-40, 39, 38

(H'D SW, EC, CLK, IC DATA)

AND CHANGE CYLINDER OR IC501

PACE VCR IN STOP MODE

BLUE MISSING IN

STOP MODE

CHANGE IC601

SELECT LINE

MODE WITHOUT

INPUT SIGNAL

IC601-72 "H"

CHECK IC6P01-8 TO IC601-72

NO

YES

YES

CHECK IC6P01

IC6P01-9, 10, 11

(STB, CLK, DATA)

CHECK IC601-6, 7, 8

NO

YES

IC6P01-8 "H"

(SYNC JUDGE)

VIDEO SIGNAL

IC6P01-13

NO

CHECK OSD VIDEO IN LINE

YES

YES

NO

(VCR Section)

Troubleshooting

5-10 Samsung Electronics

CHECK

Q3A03, Q3A02

CHECK

R3A04

CHECK

R373

IC301-15

AUDIO SIGNAL

IC501-4

AUDIO SIGNAL

NO

NO

NO

CHECK IC301-68, 69

CLOCK, DATA

CHECK

C523, R512, R511

HI-FI MODELS ONLY

NO

NO

YES

NO

YES

YES

YES

YES

YES

YES

CHECK

IC301-14, C3A02

IC301-12 AND CHANGE IC301

CHANGE IC501

IC301-11

AUDIO SIGNAL

IC301-100

AUDIO SIGNAL

IC301-5

MIX SIGNAL

(AUDIO

+

70KHz)

CN3A01-4

OSCILLATION

NO

CHECK (AUDIO MISSING

IN PB MODE)

CHECK

PB MODE

CHECK

ACE HEAD

MONO

YES

MISSING AUDIO

IC501-7, 69

AUDIO SIGNAL

IC501-26

AUDIO FM

CHECK

CYLINDER

CHANGE IC501

CHECK

R815, R816, L809, L810, JC803

CHECK

(AUDIO MISSING

IN EE MODE)

AUDIO MISSING IN

REC MODE

MONO

HIFI

MONO

NO

NO

YES

YES

CHECK IC501

5V AND 9V LINE

CHECK IC501-38, 39

(CLK, DATA)

NO

YES

(VCR Section)

Troubleshooting

5-11Samsung Electronics

MIC INSERT AND SINGING

MIC SOUND MISSING

CHECK

RK05, RK13, R841, R842, JC803

IC7K1-1, 7

SOUND

CHECK MIC1, MIC2, IC7K1

PERIPHERAL CIRCUIT

CHECK Q7K01, Q7K02

PERIPHERAL CIRCUIT

CHECK ICK5-12, 10

PERIPHERAL CIRCUIT

CHECK ICK1

PERIPHERAL CIRCUIT

NO

YES

YES

YES

YES

YES

NO

NO

ICK3-7

SOUND

CHECK IC601-49 "L"

NO

ICK1-1, 7

SOUND

NO

IC601-77 "H"

ICK3-2

SOUND

(VCR Section)

PLACE VCR IN STOP MODE

AUDIO MISSING

IN EE MODE

CHECK

C524, C525, R546, R547

CHECK IC501

CHECK

TUNER BLOCK AND IC4N01

CHECK

R517, R518, R509, R510

INPUT SELECT MODE

IC501-7, 69

AUDIO SIGNAL

INPUT

IC501-51, 53

AUDIO SIGNAL

INPUT

NO

LINE NO

TUNER

YES

IC501-78, 80

AUDIO SIGNAL

NO

YES

CHECK IC601

IC501-38, 39

CLK, DATA

NO

YES

(VCR Section)