samsung TC29J6MNX-XAX Service Manual

DVD Television

Chassis : V18B Model: TC29J6MNX/XAX

DVD Television Cassette Recorder CONTENTS

Precautions

Specifications

Disassembly and Reassembly

Alignment and Adjustment (Electrical)

Troubleshooting

Exploded View and Parts List

Electric Parts List

Block Diagram

Schematic Diagrams

ELECTRONICS

Printed in Korea

AA82-00829A

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.

4-2 Factory (“Service”) Mode

Alignment and Adjustments (Electrical)

Samsung Electronics 4-1

4. Alignment and Adjustments (Electrical)

4-1 Preadjustment

4-1-1 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.

4-1-2 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.

4-1-3 When CRT Is Replaced

Make the following adjustments after setting up

purity and convergence:

White Balance Sub-Brightness Vertical Center Vertical Size Horizontal Size

4-2-1 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):

STAND-BY →MUTE →1 → 8 →2 → 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 (s,t).

4. Selection sequences for the NTSC systems:

down or up key:

CAP>SBT>SCT>SCR>STT>BLR>BLG>RG> GG>BG>PWL>SC>VSL>VA>NVS>NHS> EW1>EWP>EWUC>EWLC>VSC>HP>HB> TC>EW2>CDL>BKS>NDL>WS>VM>AKB> CB>BPS>SCL>SVM>SCBT

5. The “SELECT” keys (s,t) increase or decrease the adjustment values, (stored in the non-volatile memory) when Adjustment Mode is cancelled.

Alignment and Adjustments (Electrical)

4-2 Samsung Electronics

OSD

CAP

SBT

SCT

SCR

STT

BLR

BLG

PWL

VSL

NVS

AKB

BPS

Initial

Adjust

Fix

Range

0-23

0-13

0-63

0-15

0-63

0-1

Function

CAPTION Position

Sub Brigh

Sub Contrast

Sub Color

Sub Tint

Low Light R

Low Light G

High Light R

High Light G

High Light B

Peak white level

S-Correction

Vertical Slope

Vertical Amplitude

Vertical shift

AKB on/off (FS Check)

Chroma Bandpass

Bypass Delay Lune

Adjust

Fix

Initial

OSD

NHS

EW1

EWP

EWUC

EWLC

VSC

EW2

CDL

BKS

NDL

SCL

SVM

SCBT

Range

0-63

0-15

0-1

0-15

0-3

0-63

Function

Horizon Shift

EW (Panorama)

Upper Corner

Lower Corner

Vertical scroll

H-Paralleogram Horizontal Bow

EW Trapezium

Panorama EW(Non Vse)

Cathode Drive Level

Black Stretcher

NTSC Delay

White Stretch

Amplitude of Scan Velocity

Soft Clipping Level

SVM Out & RGB Out Delay

Screen Adj Bright Level

4-2-2 Adjust

4-2-3 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.

Alignment and Adjustments (Electrical)

Samsung Electronics 4-3

4-2-4 Option

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.

4-2-5 Reset

The VCR Test Mode is used during factorying inspection or when exchange VCR deck.

* Entering : STBY Mode -> factory key -> Power key (light up all LED)

Function : “9” -> Head Switch Auto Adjustment.

“5” -> Env Center point Auto Adjustment. “TRK + “ -> Env max point Adjustment. “TRK - “ -> Env min point Adjustment.

* Cancellation : pull out power cord.

4-2-6 VCR Test Mode (Reference Only)

1 2 3 4 5 6 7 8 9 10 11

OSD

VIDEO MUTE

ZOOM

AUTO POWER

AUDIO MUTE

LANGUAGE

2H comb

BLUE SCREEN

V-CHIP

ANTENNA

S-VIDEO

VCR HEAD

Adjust

2 (X100mS)

NOR/ZOOM/16:9

ON ON

English

ON ON ON IRC

OFF

HIFI

Range

off/x1/x2/x3...

NORMAL,NOR/ZOOM,NOR/ZOOM/16:9

ON/OFF ON/OFF

English/Espanol/Franch

(21"/29" option)

ON/OFF

IRC/AFN

ON/OFF

HIFI/4HD/2HD

Alignment and Adjustments (Electrical)

4-4 Samsung Electronics

4-3 Other Adjustments

4-3-1 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.

4-3-2 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.

4-3-3 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)

Samsung Electronics 4-5

4-3-4 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.

4-3-5 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

4-3-6 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)

4-6 Samsung Electronics

4-3-7 I C BUS GEOMETRIC Adjust

1. V SIZE(VA)

3. V LINEARITY (VSL)

5. V S CORRECTION (SC)

2. UP CPIN (EWUC) : 29" Only

4. LO CPIN (EWLC) : 29" Only

6. TILT (TC)

7. H POSITION (NHS)

9. H SIZE(EWI)

11. PIN COMP (EWP)

8. AFC BOW (HB)

10. AFC ANGLE (HP)

12. V POSITION (NVS)

Alignment and Adjustments (Electrical)

Samsung Electronics 4-7

4-3-8 White Balance Adjustment

4-4-7 (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.

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

1. Automatically accomplished during the high-light adjustment.

6 Pole Magnet

Fig. 5 -1 Convergence Magnet Assembly

Fig. 5-2 Center Convergence Adjustment

Clamper

Screw

4 Pole Magnet

2 Pole Magnet

2 POLE PURITY

YOKE CLAMP SCREW

6 POLE

CONVERGENCE 4 POLE CONVERGENCE

Vertical Green Belt

31m/m

Alignment and Adjustments (Electrical)

4-8 Samsung Electronics

4-3-8 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

Troubleshooting

Samsung Electronics 5-1

5. Troubleshooting

5-1 No Power (No Picture on)

Yes

Check

both terminal voltages

of C815

Check both

terminal voltages of

C806 (280~300V).

Check D801S

FP801S

Is IC801S Pin 3

19~22V?

Check IC801S

Check/Replace

DZ801,DZ804,

DZ802,PC801S

Yes

Check

Voltage of 8V, 12V, 6V,

20V power line..

Check whether each power line is short or open.

Yes

Is Q805-E

Output Voltage 5V?

Is Q901-E

Voltage 3.3V?

Check/Replace

Q901, DZ901, D901

Check

Q811-B is High

when power is On

(about 0.6~2.0v)

Check/Replace

IC902

Check /Replace

Q810, Q812, DZ805

Yes

Troubleshooting

5-2 Samsung Electronics

5-2 No Power (No Picture)

5-3 E/W Correction Not

Q810-E Output

Voltage 8V?

Yes

H-Drive Out?

(CN401 #6)

Yes

FBT Output line

Voltage?

Check/Replace

Q810, DZ809

Check (IC902)

Check/Replace

Q401, Q402, D414

E/W Out check?

(CN401 #5)

Yes

Check Q403

Drain Pin E/W wave

output?

Q403,

R413,L405

Check/Replace

IC902

Troubleshooting

Samsung Electronics 5-3

5-4 No Raster / No RF Signal

* No Raster

Q810-E Output

Voltage?

Yes

Check H-Drive

(CN003 #8)

Yes

Check Q402,

Q401, D414

Yes

Check Q811-B(0.6~2.0V)

Check IC902 #1

Check/Replace

IC902

Check/Replace

* No signal

IC902 #1 TV

Power High?

Yes

Q810-E Output

Voltage 8V?

Yes

Tuner B+

5V?

Yes

Tuner 33V Line Check

Check/Replace

IC902

Replace Q810

Tuner 5V

Line Check

Check R405, R435 R424, R425

Check the

CRT PCB, IC501,

R513, L501

Replace

Check/Replace

Troubleshooting

5-4 Samsung Electronics

5-5 No Sound

Power On

Yes

Check Amp

IC601 B+(12V:#3,#13)

In Power Board

Yes

Check Amp

Mute Pin(High:#6,#7)

In Power Board

Yes

Check Tone

Control IC601 #21,#22

In Main Board

Yes

Check ICM501

L,R out check and SIF

Input check

Yes

Check/Replace

FA803S,D808 A+13.5V Line

Check/Replace Q601&A-Mute

Check/I2 Line

IC902 #71, #72

Check/Replace

ICM501&HIFI/

TM Block

Check/Replace Speaker

Troubleshooting

Samsung Electronics 5-5

5-6 Horizotal Line

5-7 No Picture (Sound OK)

1 Check the Brightness, Contrast and Color adjustments

2. Check: AV Picture

3. See Signal Block Diagram

5-8 No Sound (Picture OK)

1. Check the Volume adjustment level.

2. Check AV Video

3. See Signal Block Diagram

IC301(LA7845)

1# 13.5V, 6# 18V

Output?

Yes

Check IC301

Check/Replace Speaker

#2 Vertical wave

output?

Yes

D301,DZ302

DZ303,DZ304,DZ305

DZ306 check?

Yes

Replace IC301(LA7845)

Check/Replace

R425,R424, D401,D402

IC301 #2 vertial

wave input check

Replace

Troubleshooting

5-6 Samsung Electronics

5-9 RF Weak Signal (Playback, AV Mode OK)

1. Check Tuner (TU01S) B+. Check: 8V 33V (DZ201). Check 5V

5-10 No Vertical SCAN

1. Check R425, D401

2. Check IC301, #2

3. Check Chroma module Vertical-out Line

4. Check DY Connector

5-11 Horizontal Size

1. Check C411, R421, Q403, R405

5-12 On-Screen Display Missing

1. Check IC902 #56, #57, #58

Troubleshooting

Samsung Electronics 5-7

Normal

Abnormal

Normal

Check

the audio signal of ICM301

Pin 10

Check the line of ICM501 Pin 62

(Mono Audio Out Line)

Check if ICM301

Pin 53, 54, 55 is Low

(Serial Data)

Replace ICM301

Check the B 5V

of ICM301 Pin 77

Check AC head

line and CNM302

Check the B 5V line

Check Serial Line &

ICM601

Replace ICM301

Check the Audio

signal of ICM301

Pin 2, 3

Abnormal

Normal

Abnormal

5-13 No Audio During Playback (Mono Audio)

Troubleshooting

5-8 Samsung Electronics

Normal

Abnormal

Normal

Check

the audio signal of ICM501

Pin 53,57

Check the IC601(TONE Control)

Pin 24:+8V, Pin 21,22:I

Check the ICM501

Pin 42,43 (I

C Data)

Replace ICM501

Check the B5V/B9V

of ICM501 Pin25,40,58

Check Rotaly Head

line and CNM301

Check the B5V/B9V line

Check the I2C Line

ICM601 Pin 66,67

Replace Head Drum

Check the HIFI

Env ICM501

Pin 30

Abnormal

Normal

Abnormal

5-14 No Audio During Playback (HIFI)

Troubleshooting

Samsung Electronics 5-9

5-15 No Audio During Record (Mono Audio)

Press

the "REC" button

for the recording

mode

Normal

Check the audio

signal of ICM301

Pin 9

Normal

Check the bias signal

ICM301 Pin 6

Normal

Check CNM302

Pin 4, 5, 6

Normal

Check AC head

Abnormal

Normal

Check the audio signal

of ICM301 Pin 76

Replace ICM301

Check the REC bias

signal of FLM301

Check/Replace

Abnormal

FLM301, QM304, QM302

Troubleshooting

5-10 Samsung Electronics

5-16 No Audio During Record (HIFI Audio)

Press

the "REC" button

for the recording

mode

Normal

Check the FM

signal of ICM501

Pin 21

Normal

Check the I

C Line

ICM501 Pin 42,43

Normal

Check/Replace

CNM301&Head Drum

Check the REC-Mute

of ICM501 Pin 29

(DM501(+)) High

Abnormal

Check the ICM601 Pin 68

Abnormal

Check the ICM601

Troubleshooting

Samsung Electronics 5-11

5-17 No Playback

Insert a video tape and

start PLAYBACK

Check the tape loading

Normal

Check

ICM601 Pin 76, 77

(Start/end sensor)

Check

the Rotation of Cylinder

Normal

Check

ICM601 Pin 24

(SW 30Hz)

Normal

Abnormal

Check :

ICM601 Pin 38 : High

ICM601 Pin 39 : Low

Abnormal

Replace ICM601

Check the tape

Refer to "Cylinder

doesn't rotate"

Check ICM601

Pin 97(D-FG)

and Pin 96 (D-PG)

Check the rotation

of capstan

Normal

Check ICM601

Pin 98,99

Normal

Check

ICM601 Pin 34,35,36

( PROG, SW)

Normal

Replace ICM601

Abnormal

Stop Mode

Refer to "Capstan

doesn't Rotate"

Check PTM602, PTM601,

T-Reel takeup sensor

Check the

loading motor

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