Samsung DW15G10VD5XXEF Schematic

DVD Television

Chassis : C19A(P) Model: DW15G10VD5XXEF

DVD Television Cassette Recorder CONTENTS

Alignment and Adjustment

Disassembly

Exploded View and Parts List

Electric Parts List

PCB Diagram

Schematic Diagrams

ELECTRONICS

Printed in Korea

AA82-01178A

This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.

1-2 Factory (“Service”) Mode

Alignment and Adjustments (Electrical)

Samsung Electronics 1-1

1. Alignment and Adjustments (Electrical)

1-1 Preadjustment

1-1-1 Factory Mode

1. Do not attempt these adjustments in the Video Mode.

2. The Factory Mode adjustments are necessary when either the EEPROM (IC901) or the CRT is replaced.

3. Do not tamper with the “Adjustment” screen of the Factory Mode menu. This screen is intended only for factory use.

1-1-2 When EEPROM (IC901) Is Replaced

1. When IC901 is replaced all adjustment data revert to initial values. It is necessary to reprogram this data.

2. After IC901 is replaced, warm up the TV for 10 seconds.

1-1-3 When CRT Is Replaced

Make the following adjustments after setting up

purity and convergence:

White Balance Sub-Brightness Vertical Center Vertical Size Horizontal Size

1 -2-1 Procedure for the “Adjustment” Mode

1. This mode uses the standard remote control. The Service Mode is activated by: (1) pressing the “FACTORY” service key on the local-keyboard, or (2) by entering the following remotecontrol sequence (within 2 seconds):

Display > Menu/Mute POWER ON

2. The “SERVICE (FACTORY)” message will be displayed. The Service Mode has three components: Adjustment, Option Bytes and Reset.

3. Access the Adjustment Mode by pressing the “SELECT” keys ( ). The adjustment parameters are listed in the accompanying table, and selected by pressing the “SELECT” keys (▲,▼).

4. Selection sequences for the PAL systems:

down or up key:

AGC>SCT>SBT>BLR>BLB>RG>GG>BG> VSL>PVS>VA>PHS>SC>CDL>STT>AKB> PDL>NDL>SCR>DSCR>VOL>LCO>TXP> FMWS>AGCS>OMD>SCL>PWL>AGN>PEK> ACL>FCO>SCBT>TSC>SSP>AVOL>SVOL> PSNS

5. The “SELECT” keys (▲,▼) increase or decrease

the adjustment values, (stored in the non-volatile memory) when Adjustment Mode is cancelled.

Alignment and Adjustments (Electrical)

1-2 Samsung Electronics

Function

Auto Gain Comtrol(IF AGC)

Sub contrast

Sub bright

Low-Lingt(Black level Offset R)

Low-Lingt(Black level Offset G)

Hi-Lingt(White Point R)

Hi-Lingt(White Point G)

Hi-Lingt(White Point B)

Vertical Slope

PAL Vertical Shift

Vertical Amplitude

PAL Horizontal Shift

S- Correction

Cathode Drive Level

SUB TINT

Black Current Stabilization

PAL Y-Delay

NTSC Y-Delay

SUB COLOR

OSD

DSCR

VOL

LCO

TXP

FMWS

AGCS

OMD

SCL

PWL

AGN

PEK

ACL

FCO

SCBT

TSC

SSP

AVOL

SVOL

PSNS

Function

DVD Sub Color

Volume Level(Initial)

PLL Demodulator Freg. Adjust

Text Position

Window selection of FM Dem.

IF AGC Speed

Over Modulation

Soft Clipping Level

Peak White Level

Gain FM Demodulator

Peaking Control

Automatic Color Lomiting

Forced Colour On

Screen Brightness

TTX Sub Contrast

Sub Sharpness

AV Volume Level

SECAM L/L’ Volume Level

Color Sensitivity

1-2-2 Adjust

OSD

AGC

SCT

SBT

BLR

BLB

VSL

PVS

PHS

CDL

STT

AKB

PDL

NDL

SCR

Alignment and Adjustments (Electrical)

Samsung Electronics 1-3

1-2-4 Option

1 2 3 4 5 6 7 8

9 10 11 12

OSD System AREA JACK ZOOM Auto Power On HOLTEL MODE BKS HELP MENU LIST/FLOF Video Mute DVD Reg DVD Color

Range CI/CF/CZ/CB West Europe / East Europe SCART/RCA NOR/ZOOM, NOR/ZOOM/16:9 On/Off On/Off On/Off On/Off LIST/FLOF Off/ 1 ~ 10 0/1/2/3/4/5/6/ Auto/NTSC/PAL

1-2-3 AGING Mode(Reference Only)

This pattern is used for pre-heating the CRT during manufacturing-it is accessed in the factory by twice pressing the “FACTORY” key.

Even if the TV power is cut off, the Aging Mode is not cancelled. The “AGING” marking is displayed on the screen. The AGING mode is cancelled by epresing the “FACTORY” key.

Adjust

CI/CF/CZ/CB

WEST EUROPE

SCART

NOR/ZOOM

On Off On On

FLOF

8 ( 100mS)

PAL

1-4 Samsung Electronics

1-3 Other Adjustments

1-3-1 General

1. Usually, a color TV needs only slight touch-up adjustment upon installation.

Check the basic characteristics such as height, horizontal and vertical sync and focus.

2. The picture should have good black and white

details. There should be no objectionable color shading; if color shading is present, perform the purity and convergence adjustments described below.

3. Use the specified test equipment or its

equivalent.

4. Correct impedance matching is essential.

5. Avoid overload. Excessive signal from a sweep

generator might overload the front-end of the TV. When inserting signal markers, do not allow the marker generator to distort test results.

6. Connect the TV only to an AC power source

with voltage and frequency as specified on the backcover nameplate.

7. Do not attempt to connect or disconnect any

wires while the TV is turned on. Make sure that the power cord is disconnected before replacing any parts.

8. To protect against shock hazard, use an isolation transformer.

1-3-2 Automatic Degaussing

A degaussing coil is mounted around the picture tube, so that external degaussing after moving the TV should be unnecessary. But the receiver must be properly degaussed upon installation.

The degaussing coil operates for about 1 second after the power is switched ON. If the set has been moved or turned in a different direction, disconnect its AC power for at least 10 minutes.

If the chassis or parts of the cabinet become magnetized, poor color purity will result. If this happens, use an external degaussing coil. Slowly move the degaussing coil around the faceplate of the picture tube and the sides and front of the receiver. Slowly withdraw the coil to a distance of about 6 feet before removing power.

1-3-3 High Voltage Check

CAUTION: There is no high voltage adjustment on this chassis. The B+ power supply must be set to +130 volts (Full color bar input and normal picture level).

1. Connect a digital voltmeter to the second anode of the picture tube.

2. Turn on the TV. Set the Brightness and Contrast controls to minimum (zero beam current).

3. The high voltage should not exceed 30KV.

4. Adjust the Brightness and contrast controls to both extremes. Ensure that the high voltage does not exceed 30KV under any conditions.

Alignment and Adjustments (Electrical)

The Reset Mode is used during factorying inspection Function Reset : After Factorying Reset, the following items itens revert to their initial values.

1. Volume 10

2. Channel ANT 3

3. P- STD MEMORY

4. Auto Power ON

5. NR OFF Cautim : When the EEPROM is replaced ; all items revert to their initial values.

1-2-5 Reset

Alignment and Adjustments (Electrical)

Samsung Electronics 1-5

1-3-4 FOCUS Adjustment

1. Input a CROSS hatch signal.

2. Adjust the tuning Focus VR for the clearest picture.

3. Adjust the FOCUS control for well defined scanning lines in the center area of the screen.

1-3-5 Screen Adjustment

1. Turn to the White Signal.

2. Adjust the VR screen for a normal picture is (no blooming or flyback line). Input the Factory -> G2-Adjust choice -> Screen VR tuning OK Mode

1-3-6 Purity Adjustment

1. Warm up the receiver for at least 20 minutes.

2. Plug in the CRT deflection yoke and tighten the clamp screw.

3. Plug the convergence yoke into the CRT and set in as shown in Fig. 5-1.

4. Input a black and white signal.

5. Fully demagnetize the receive by applying an external degaussing coil.

6. Turn the CONTRAST and BRIGHTNESS controls to maximum.

7. Loosen the clamp screw holding the yoke. Slide the yoke backward or forward to provide

vertical green belt. (Fig. 5-2).

8. Tighten the convergence yoke.

9. Slowly move the deflection yoke forward, and adjust for the best overall green screen.

10. Temporarily tighten the deflection yoke.

11. Produce blue and red rasters by adjusting the low-light controls. Check for good purity

in each field.

12. Tighten the deflection yoke.

Alignment and Adjustments (Electrical)

1-6 Samsung Electronics

1-3-7 White Balance Adjustment

1-4-7 (A) HIGH-LIGHT ADJUSTMENT

1. Input either a Lion Head or a “pure white” pattern.

2. Warm up the TV for 30 minutes.

3. Check the data in the Service Mode

4. Adjust RG, BG in the Factory Mode.

1-4-7 (B) LOW-LIGHT ADJUSTMENT

1. Automatically accomplished during the high-light adjustment.

Fig. 5 -1 Convergence Magnet Assembly

Fig. 5-2 Center Convergence Adjustment

6 Pole Magnet

Clamper

Screw

4 Pole Magnet

2 Pole Magnet

2 POLE PURITY

6 POLE

CONVERGENCE 4 POLE CONVERGENCE

YOKE CLAMP SCREW

31m/m

Vertical Green Belt

Alignment and Adjustments (Electrical)

Samsung Electronics 1-7

1-3-8 Center Convergence Adjustment

1. Warm up the receiver for at least 20 minutes.

2. Adjust the two tabs of the 4 pole magnets to change the angle between them. Superimpose the red and blue vertical lines in the center area of the screen.

3. Adjust the Brightness and Contrast controls for a well defined picture.

4. Adjust the two-tab pairs of the 4 pole magnets, and change the angle between them. Superimpose the red and the blue vertical lines in the center area of the screen.

5. Turn the both tabs at the same time, keeping the angle constant, and superimpose the red and blue horizontal line in the center of the screen.

6. Adjust the two-tab pairs of the 6-pole magnets to superimpose the red and blue line onto the green. (Changing the angle affects the vertical lines, and rotating both magnets affects the horizontal lines.)

7. Repeat adjustments 2~6, if necessary.

8. Since the 4-pole magnets and 6-pole magnets interact, the dot movement is complex (Fig. 5-3).

Fig 5-3 Center Convergence Adjustment

BLUE

RED

RED/BLUE

GREEN

RED

4-Pole Magnet Movement

GREEN

6-Pole Magnet Movement

Alignment and Adjustments (Electrical)

1-8 Samsung Electronics

MEMO

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