Samsung DCB-H380R Service Manual

DIGITAL CABLE RECEIVER

STANDBY

BASIC : DCB

-H380R

Application Models: DCB-H380R

Application Area:

BAS, XEN

SERVICE MANUAL DCB-H380R

Manual

If you want to know additional information which is not included on this Service

Manual, Please refer to the SKP(Samsung Knowledge Portal) web site.

Area Web Site

North America URL ; http://service.samsungportal.com

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Mideast & Africa URL ; http://mea.samsungportal.com

SERVICE

DIGITAL CABLE RECEIVER Contents

1. Precautions

2. Product Specification

3. Disassembly and Reassembly

4. Trouble Shooting

5. Exploded View and Parts List

6. PCB Diagrams

7. Schematic Diagrams

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.

Printed in Korea

CONTENTS CONTENTS

1. Precautions 1-1 ~ 1-4 1-1 Safety Precautions (1-1)

1-2 Servicing Precautions (1-3) 1-3 ESD Precautions (1-4

2. Product Specication 2-1 ~ 2-4

2-1 Product Specication (2-1)

2-2 Chassis Product Specication (2-2) 2-3 Option Product Specication (2-3)

3. Disassembly and Reassembly 3-1 ~ 3-4 3-1 Cabinet Disassembly (3-1)

4. Troubleshooting 4-1 ~ 4-18 4-1 Troubleshooting (4-2)

4-2 Software Upgrade (4-17)

5. Exploded View and Parts List 5-1 ~ 5-14 5-1 Ass'y Chassis (5-2)

7-7 Decoupling (Main PCB) (7-9) 7-8 Flash / Reset / DCU (Main PCB) (7-10) 7-9 SDRAM(System) (Main PCB) (7-11)

)

7-10 SDRAM(Video) (Main PCB) (7-12) 7-11 SCART (Main PCB) (7-13) 7-12 SCART Wave Form (Main PCB) (7-14) 7-13 Audio / HDMI / SPDIF (Main PCB) (7-15) 7-14 Modem (Main PCB) (7-16) 7-15 GPIO/Front/SmartCard/NV (Main PCB) (7-17) 7-16 STv0362 (Main PCB) (7-18) 7-17 Front (Front PCB) (7-19)

5-2 Electrical Parts List (5-4)

6. PCB Diagrams 6-1 ~ 6-8 6-1 Wiring Diagram (6-2)

6-2 Main PCB (6-3) 6-3 Main PCB Wave Form (6-4) 6-3 Front PCB (6-7)

7. Schematic Diagrams 7-1 ~ 7-20 7-1 All block Diagram (7-2)

7-2 Power Supply Circuit Operating Descriptions (7-3) 7-3 SMPS (Main PCB) (7-5) 7-4 Tuner (Main PCB) (7-6) 7-5 DEMOD (Main PCB) (7-7) 7-6 Power (Main PCB) (7-8)

1. Precautions

1-1 Safety Precautions

1) Before returning an instrument to the customer, always make a safety check of the entire instrument, including, but not limited to, the following items:

(1) Be sure that no built-in protective devices are defective or have been defeated during servicing. (1)Protective shields are provided to protect both the technician and the customer. Correctly replace all missing protective shields, including any removed for servicing convenience. (2)When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place all protective devices, including, but not limited to, nonmetallic control knobs, insulating fish papers, adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not operate this instrument or permit it to be operated without all protective devices correctly installed and functioning.

(2) Be sure that there are no cabinet openings through which adults or children might be able to insert their fingers and contact a hazardous voltage. Such openings include, but are not limited to, excessively wide cabinet ventilation slots, and an improperly fitted and/or incorrectly secured cabinet back cover.

(3) Leakage Current Hot Check-With the instrument completely reassembled, plug the AC line cord directly into a 230V(220V ~ 240V) AC outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with American National Standardsp institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1270 (40.7). With the instrument’s AC switch first in the ON position and then in the OFF position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed metal parts of the instrument (antennas, handle brackets, metal cabinets, screwheads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5mA. Reverse the instrument power cord plug in the outlet and repeat the test. See Fig. 1-1.

Any measurements not within the limits specified herein indicate a potential shock hazard that must be eliminated before returning the instrument to the customer.

Fig. 1-1 AC Leakage Test

(4) Insulation Resistance Test Cold Check-(1) Unplug the power supply cord and connect a jumper wire between the two prongs of the plug. (2) Turn on the power switch of the instrument. (3) Measure the resistance with an ohmmeter between the jumpered AC plug and all exposed metallic cabinet parts on the instrument, such as screwheads, antenna, control shafts, handle brackets, etc. When an exposed metallic part has a return path to the chassis, the reading should be between 1 and 5.2 megohm. When there is no return path to the chassis, the reading must be infinite. If the reading is not within the limits specified, there is the possibility of a shock hazard, and the instrument must be repaired and rechecked before it is returned to the customer. See Fig. 1-2.

Fig. 1-2 Insulation Resistance Test

Samsung electronics 1-1

Precautions

1-2 Samsung Electronics

2) Read and comply with all caution and safety related notes on or inside the cabinet, or on the chassis.

3) Design Alteration Warning-Do not alter or add to the mechanical or electrical design of this instrument. Design alterations and additions, including

 butnotlimitedto,circuitmodicationsandthe

addition of items such as auxiliary audio output connections, might alter the safety characteristics of this instrument and create a hazard to the user. Any design alterations or additions will make you, the servicer, responsible for personal injury or property damage resulting therefrom.

4) Observe original lead dress. Take extra care to assure correct lead dress in the following areas: (1) near sharp edges, (2) near thermally hot parts (be sure that leads and components do not touch thermally hot parts), (3) the AC supply, (4) high voltage, and (5) antenna wiring. Always inspect in all areas for pinched, out-of-place, or frayed wiring, Do not change spacing between a component and the printed-circuit board. Check the AC power cord for damage.

5) Components, parts, and/or wiring that appear to have overheated or that are otherwise damaged should be replaced with components, parts and/ or

 wiringthatmeetoriginalspecications.

Additionally, determine the cause of overheating and/or damage and, if necessary, take corrective action to remove any potential safety hazard.

6) Product Safety Notice-Some electrical and mechanical parts have special safety-related characteristics which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have

 specialsafetycharacteristicsareidentiedby

shading, an ( )or a ( )on schematics and parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended

 replacementpartmightcreateshock,reand/or

other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate.

Samsung Electronics 1-3

Precautions

1-2 Servicing Precautions

CAUTION : Before servicing units covered by this

service manual and its supplements, read and follow the Safety Precautions section of this manual.

Note:Ifunforseencircumstancescreateconict

between the following servicing precautions and any of the safety precautions, always follow the safety precautions. Remember: Safety First.

1-2-1 General Servicing Precautions

(1) a. Always unplug the instrument’s AC powercord from the AC power source before (1) re-moving or reinstalling any component, circuit board, module or any other instrument assembly, (2) disconnecting any instrument electrical plug or other electrical connection, (3) connecting a test substitute in parallel with an electrolytic ca pacitor in the instrument.

b. Do not defeat any plug/socket B+ voltage interlocks with which instruments covered by this service manual might be equipped.

c. Do not apply AC power to this instrument and /or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed.

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

(4) An insulation tube or tape is sometimes used and some components are raised above the printed wiring board for safety. The internal wiring is sometimes clamped to prevent contact with heating components. Install such elements as they were.

(5) After servicing, always check that the removed screws, components, and wiring have been installed correctly and that the portion around the serviced part has not been damaged and so on. Further, check the insulation between the blades of the attachment plug and accessible conductive parts.

1-2-2 Insulation Checking Procedure

Disconnect the attachment plug from the AC outlet and turn the power ON. Connect the insulation resistance meter (500V) to the blades of the attachment plug. The insulation resistance between each blade of the attachment plug and accessible conductive parts(see note) should be more than 1 Megohm.

Note : Accessible conductive parts include metal panels, input terminals, earphone jacks, etc.

Note : Refer to the Safety Precautions section ground lead last.

(2) The service precautions are indicated or printed on the cabinet, chassis or components. When servicing, follow the printed or indicated service precautions and service materials.

(3)Thecomponentsusedintheunithaveaspecied  ameresistanceanddielectricstrength.

When replacing components, use components

 whichhavethesameratings.Componentsidentied

by shading, by( ) or by ( ) in the circuit diagram are important for safety or for the characteristics of the unit. Always replace them with the exact replacement components.

Precautions

1-3 ESD Precautions

Electrostatically Sensitive Devices (ESD)

Some semiconductor (solid state) devices can be damagedeasily by static electricity. Such components commonly are called Electrostatically Sensitive Devices(ESD). Examples of typical ESD

devicesareintegratedcircuitsandsomeeld-effect

transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

(1) Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test.

CAUTION : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

(8) Minimize bodily motions when handling unpackaged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a

 carpetedoorcangeneratestaticelectricity  sufcienttodamageanESDdevice).

(2) After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

(3) Use only a grounded-tip soldering iron to solder or unsolder ESD devices.

(4) Use only an anti-static solder removal devices.

 Somesolderremovaldevicesnotclassiedas  “anti-static”cangenerateelectricalchargessufcient

to damage ESD devices.

(5) Do not use freon-propelled chemicals. These can

 generateelectricalchargessufcienttodamage

ESD devices.

(6) Do not remove a replacement ESD device from its protective package until immediately before your are ready to install it.(Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials).

(7) Immediately before removing the protective materials from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

1-4 Samsung Electronics

2. Product Specication

2-1 Product Specication

Power Supply

Tuner

Video Decoder

Audio Decoder

A/V Out

Physical Specication

Input Voltage 230 +/- 15% VAC, 50Hz

Power Consumtion Max 20W,

Digital Broadcasting DVB-C (16QAM ~ 256QAM)

Input Signal Level -75dBm~-25dBm

Input Impedance 75 ohm Unbalanced

Connector Type IEC female in accordance with IEC 60169-2

Video Format 4:3(Normal) & 16:9(Wide)

Sample Frequency 32, 44.1, 48 kHz

Type SMPS

Fuse Rating 250V/T1.6A

Freq. Range 109MHz - 862MHz

Prole MPEG 2 MP@ML, MPEG 4 H.264

Resolution HD:576P, 720P, 1080i, SD:576i

Output Dolby Digital / PCM

Audio Mode Mono / Stereo

Interface RCA(L/R), S/PDIF(Optical), HDMI

TV SCART(CVBS,RGB)

Video Out

Audio Out

Size 270 × 200 × 40

Weight 1.2 Kg

VCR SCART(CVBS)

RCA(Component) x 1

HDMI

RCA(L/R)×1

S/PDIF×1

HDMI x 1

Samsung Electronics 2-1

Product Specication

2-2 Samsung Electronics

2-2 Chassis Product Specication

Model Name DTB-H380Z DCB-H380R

Chassis

Modulation Format DVB-T DVB-C

Decoding Format

Denition

Resolution

Dolby Decoding

MPEG 2 MP@ML,

MPEG 4 H.264

HD/SD HD/SD

HD : 576p,720p,1080i

SD : 576i

O O

MPEG 2 MP@ML,

MPEG 4 H.264

HD : 576p,720p,1080i

SD : 576i

Loop Through

Down Mixed 2ch supported

SPDIF Supported

OSD Language

Subtitle(Caption)

EPG

Channel List

Favorite Channel List

Audio Volume control

Factory Default

S/W Update

SCART(CVBS)

SCART(S-Video)

SCART(RGB)

SCART(YUV)

Component(YPbPr) : RCA X O

HDMI

(English, Norway, Sweden)

O O

3 Languages

(English, Nederland, France)

O O

X X

O O

X X

O O

3 Languages

Digital Audio(Optical)

L/R Ch : RCA

Power LED indicator

O O

Samsung Electronics 2-3

Product Specication

2-3 Option Product Specication

Description Fig Description Parts No Remark

Remote Control MF59-00286A

Batteries for

Remote Controller

(AAA Type)

RF Cable

(1.2M)

SCART Cable

(1.2M)

4301-000115

AC39-00017A

AC39-00015A

Model Standard of

DCB-H380N/XEN

Model Standard of

DCB-H380N/XEN

S.N.A

Model Standard of

DCB-H380N/XEN

Model Standard of

DCB-H380N/XEN

RCA Cable

(Component)

RCA Cable (Audio L/R)

User's Manual MF68-00473A

MF39-00284A

MF39-00286A

Model Standard of

DCB-H380N/XEN

Model Standard of

DCB-H380N/XEN

Model Standard of

DCB-H380N/XEN

Product Specication

M E M O

2-4 Samsung Electronics

3. Disassembly and Reassembly

3-1 Cabinet and PCB

Samsung Electronics 3-1

3-1-1 Cover-Top Removal

1) Remove 2 Screws q.

2) Remove Cover-Top w. .

Fig. 3-1 Cover-Top Removal

q 2 SCREWS

(T 3 X 8 B)

w COVER-TOP

Disassembly and Reassembly

3-2 Samsung Electronics

3-1-2 Ass'y Front Removal

1) Remove 2 Hooks q, w.

2) Remove 5 Screws e, r.

3) Remove Ass'y Front t.

Fig. 3-2 Ass'y Front Removal

q 1 HOOK

w 1 HOOK

t ASS'Y FORNT

e 2 SCREWS

(T 3 X 8 B)

r 3 SCREWS

(T 3 X 8 W)

Samsung Electronics 3-3

Disassembly and Reassembly

3-1-3 Main board Removal

1) Remove 5 Screws q.

2) Remove Main board w.

Fig. 3-3 Main board Removal

w MAIN BOARD

q 5 SCREWS

(T 3 X 6W)

Disassembly and Reassembly

3-4 Samsung Electronics

M E M O

4. Troubleshooting

4-1 Troubleshooting ---------------------------------------------------------------------------------- 4-2

4-2 Software Upgrade ----------------------------------------------------------------------------- 4-17

Samsung Electronics 4-1

Troubleshooting

4-2 Samsung Electronics

4-1 Troubleshooting

No Power(LED Off)

Cable connection

is right?

Yes

Input

Voltage from SMPS is

OK? (5V(L512, 14V

(PPIJ1 #1))

Yes

Regulated

Voltage is OK?

((12V(PPIJ #2), 1.1V(L505),1.3(U502 #4)

2.6V(L508,L509,L511) 3.3V(U504 #2, U506 #2)) 1.0V(L515)

♦ No display even OSDA

No

Connect power plug pin

Check Power Adaptor

No 1.1V : U501 check No 1.3V : U502 check No 2.6V : U503 check No 3.3V : U504,U506 check No 12V : PPIJ1 checkNo

Yes

27MHz(X101)

is ok? 27MHz(X701 #3)

is ok? 30MHz(X702) is ok?

Yes

Check U100

No

No 27MHz : X101,X701 check No 30MHZ : X702 check

Samsung Electronics 4-3

Troubleshooting

No Locking

RF Cable connection

are right?

Yes

Check

Demodulator

input Voltage(1.0V(Q101#2),

3.3V(U506 #2))

Yes

Check

I2C Line

(R110, R111) while

Channel Up/Down

Yes

Check

I2C line

(R108,R109) while Channel Up/Down

Yes

No

Refer to a pattern

image of Table 4-1

No

Refer to a pattern

image of Table 4-1

Connect RF Cable to Antenna properly

Check Q101, D101

Check U101

Check Tuner

Check Tuner(U301)

(5V(L301))

Yes

Check U100

No

Check SMPS

Troubleshooting

4-4 Samsung Electronics

U401

U101

U704

J811

U701

U801

U503

U803

  











C111

100nF

0

R111

C116

100nF

Q101

MMBT3904

1

2

3

R101

4.7K

SDAT

SCLT

R105

1K

C114

100nF

C110 103

T3.3V

C113 100nF

R102

4.7K

0

R109

C124

103

C123

103

R104 470

C106 100nF

SDA0

C120

103

C125

103

T3.3V

R108

0

C126

103

C127

103

/RST_TM

C118

100nF

0

R110

C109

100nF

R103 470

C112

100nF

C108

100nF

C117

106

SCL0

C107 100nF

X101

27MHz

1

2

IF_AGC_EXT

IM

IP

R106

10K

R199

47

R198

47

150

R197

1K

R196

C103

10uF/16V

C104

10uF/16V

C105

10uF/16V

C119

10uF/16V

C128

100nF

C115

1uF

C134 1uF

U101

STV0297E

1

GPIO9

2

GPIO8

3

TDI

4

TDO

5

TRST

6

TCK

7

TMS

8

GPIO7

9

N_RESET

10

VDD10

11

GND11

12

VDD_IO_3V312

13

GPIO6/CS0

14

GPIO5/CS1

15

SDA

16

SCL

17

M_CK OUT18M_SY NC19M_VA LID20M_ER R21TS_D ATA_022TS_D ATA_123TS_D ATA_224TS_D ATA_325VDD2 526GND2 627VDD_ IO_3V 32728TS_D ATA_429TS_D ATA_530TS_D ATA_631TS_D ATA_732GPIO 4/SDA T

33

GPIO3

34

GPIO2

35

GPIO1

36

GPIO0

37

VDD37

38

GND38

39

VDD_IO_3V339

40

GNDAS

41

INM

42

INP

43

VCCAISO

44

INCM

45

REFM

46

REFP

47

GNDA

48

VCCA

49

GNDD50VDDD

51

GNDA _PLL52VCCA _PLL53GNDD _PLL54VCCD _PLL

55ZO56

VCCA _OSC

57A58

GNDA _OSC

59

VBAS E

60

VDD1 0REG

61

VDD6 162GND6 2

63

VDD_ IO_3V 363

64

CLK_ TST

D101

S3J

1

2

C102

0.024NF

C101

0.024NF

I2C Address = 0x38

Refer to a pattern image of Main PCB page 6-5

Refer to a pattern image of DEMOD page 7-7

Fig. 4-1

q

R110

e

R108

w

R111

r

R109

Samsung Electronics 4-5

Troubleshooting

No Video (YPbPr)

Cable

connection

and Video output mode

is right?

No

Reconnect/Change

Video signal Type

(HDTV->Component)

- Other Video Output is OK.

- YPbPr mode must be selected.

Yes

Filtered

YPbPr signal is OK?

(R239,R240

R237)

No

Unltered

YPbPr signal is OK?

(C214,C212,C221)

No

Check U100

Yes

Refer to a pattern

image of Table 4-2

Yes

Refer to a pattern

image of Table 4-2

Check Jack(J1)

Check U201

Troubleshooting

4-6 Samsung Electronics

U401

U101

U704

J811

U701

U100

U904

U903

J701

U201

U1

U803

  















 

 

C209 472

220

D217 RLZ15B

12

ROUTTV_P15

YCVBSOUTVCR

D209 RLZ15B

12

75

R235

D210 RLZ15B

12

SLBTV_P8

D219 RLZ15B

12

C216

1uF

75

R238

C219 1uF

LINVCR_P6

220

R299

YCVBSOUTTV

12K

R233

BVCR_P7

GVCR_P11

D206 RLZ15B

12

12K

R232

CVBSINVCR_P20

75

CVBSINTV_P20

75

D205 RLZ15B

12

C214 1uF

C204

220nF

ROUTVCR_P1

75

R239

D207 RLZ15B

12

BOUTTV_P7

21P_SCART

J201

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

75

R237

GVCR_P11

D218 RLZ15B

12

620

R220

BVCR_P7

75

C212 1uF

75

R241

GOUTTV_P11

YCVBSOUTVCR

D220 RLZ15B

12

LOUTVCR_P3

21P_SCART

J202

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

75

R234

75

R243

D216 RLZ15B

12

75

R240

FBINVCR_P16

C201 220nF

C221 1uF

BOUTTV_P7

RINVCR_P2

D221 RLZ15B

12

GOUTTV_P11

220

R288

ROUTTV_P1

YCVBSOUTTV

CVBSINTV_P20

D215 RLZ15B

12

LOUTTV_P3

CVBSINVCR_P20

C217 1uF

5.0VSC

RVCR_P15

ROUTTV_P15

D231 RLZ15B

12

220

C218 1uF

FBINTV_P16

C202

220nF

RVCR_P15

C213

1uF

D208 RLZ15B

12

C205

472

75

SLBVCR_P8

75

R236

C203

220nF

47uF

C233

47uF

C232

HDOUT_Pb

HDOUT_Pr

HDOUT_Y

U201

STV6418AH

1 VCCA 2

DECAV

3

VCC12

4

GNDref

5

ALIN_TV

6

ARIN_TV

7

ALIN_VCR

8

ARIN_VCR

9

ALIN+_ENC

10

ALIN-_ENC

11

ARIN+_ENC

12

ARIN-_ENC

13

ALOU T_VCR14AROU T_VCR15ALOU T_TV16AROU T_TV17GNDD18SDA19SCL20IT_O UT21SLB_ VCR22SLB_ TV23FBIN _VCR24FBOU T_TV

25

B/PbOUT_HD

26

G/YOUT_HD

27

R/PrOUT_HD

28

VCCHD

29

GNDV

30

BOUT_TV

31

GOUT_TV

32

R/COUT_TV

33

COUT_VCR

34

Y/CVBSOUT_VCR

35

Y/CVBSOUT_TV

36

VCC

37

CIN_ TV

38

Y/CV BSIN_T V

39

Y/CV BSIN_V CR40R/C/ PrIN_V CR

41

G/YI N_VCR

42

B/Pb IN_VCR

43

Y/CV BSIN_E NC

44

YIN_ ENC45CIN_ ENC

46

R/Y/ C/PrIN _ENC

47

G/Y/ CIN_EN C

48

B/Pb IN_ENC

D236

RLZ15B

1 2

D237

RLZ15B

1 2

D238

RLZ15B

1 2

TV

AUX

NEAR RCA JACK

Refer to a pattern image of Main PCB page 6-5

Refer to a pattern image of page 7-13

Fig. 4-2

q

R239

w

R240

e

R237

r

C214

t

C212

y

C221

Samsung Electronics 4-7

Troubleshooting

No Video (SCART(CVBS))

Cable

Connection

and Video Output type

are right?

Yes

CVBS

output is OK?

(R243)

No

DC input

is OK? (5V:L201,

12V:C231+)

Yes

Refer to a pattern

image of Table 4-3

- Other Video Output is OK.

- OSD is not displayed on CVBS output ♦ It need to check whether TV supports RGB/S-Video input.

No

Yes

No

Reconnect/change Video output mode

Check Jack(J201)

Check SMPS Trouble shooting

CVBS

signal from U100

is OK? (C217)

No

Check U100

Yes

Refer to a pattern

image of Table 4-3

Check U201

Troubleshooting

4-8 Samsung Electronics

U401

U101

U704

J811

U701

U100

U904

U903

J701

U201

U1

U803

  









C209 472

D217 RLZ15B

12

ROUTTV_P15

YCVBSOUTVCR

D209 RLZ15B

12

75

R235

D210 RLZ15B

12

SLBTV_P8

D219 RLZ15B

12

C216

1uF

75

R238

C219 1uF

LINVCR_P6

220

R299

YCVBSOUTTV

12K

R233

BVCR_P7

GVCR_P11

D206 RLZ15B

12

12K

R232

CVBSINVCR_P20

75

CVBSINTV_P20

75

D205 RLZ15B

12

C214 1uF

C204

220nF

ROUTVCR_P1

75

R239

D207 RLZ15B

12

BOUTTV_P7

J201

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

75

R237

GVCR_P11

D218 RLZ15B

12

BVCR_P7

75

C212 1uF

75

R241

GOUTTV_P11

YCVBSOUTVCR

LOUTVCR_P3

21P_SCART

J202

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

75

R234

75

R243

D216 RLZ15B

12

75

R240

FBINVCR_P16

C201 220nF

C221 1uF

BOUTTV_P7

RINVCR_P2

GOUTTV_P11

220

R288

ROUTTV_P1

YCVBSOUTTV

D215 RLZ15B

12

LOUTTV_P3

CVBSINVCR_P20

C217 1uF

5.0VSC

RVCR_P15

ROUTTV_P15

D231 RLZ15B

12

C218 1uF

FBINTV_P16

C202

220nF

RVCR_P15

C213

1uF

D208 RLZ15B

12

C205

472

75

SLBVCR_P8

75

R236

C203

220nF

47uF

C233

47uF

C232

HDOUT_Pb

HDOUT_Pr

HDOUT_Y

U201

STV6418AH

1 VCCA

2

DECAV

3

VCC12

4

GNDref

5

ALIN_TV

6

ARIN_TV

7

ALIN_VCR

8

ARIN_VCR

9

ALIN+_ENC

10

ALIN-_ENC

11

ARIN+_ENC

12

ARIN-_ENC

ALOU T_VCR

AROU T_VCR

ALOU T_TV

AROU T_TV

GNDD

SDA

SCL

IT_O UT

SLB_ VCR

SLB_ TV

FBIN _VCR

FBOU T_TV

25

B/PbOUT_HD

26

G/YOUT_HD

27

R/PrOUT_HD

28

VCCHD

29

GNDV

30

BOUT_TV

31

GOUT_TV

32

R/COUT_TV

33

COUT_VCR

34

Y/CVBSOUT_VCR

35

Y/CVBSOUT_TV

36

VCC

37

CIN_ TV

38

Y/CV BSIN_T V

39

Y/CV BSIN_V CR40R/C/ PrIN_V CR

41

G/YI N_VCR

42

B/Pb IN_VCR

43

Y/CV BSIN_E NC

44

YIN_ ENC45CIN_ ENC

46

R/Y/ C/PrIN _ENC

47

G/Y/ CIN_EN C

48

B/Pb IN_ENC

1 2

TV

AUX

NEAR RCA JACK

Refer to a pattern image of Main PCB page 6-5

Refer to a pattern image of page 7-13

Fig. 4-3

q

R243

w

C217

Samsung Electronics 4-9

Troubleshooting

No Video (HDMI)

Check

HDMI Cable

Connection between TV

& Settop Box

Yes

TMDS

Clock

is OK? Check the

frequency with Frequency counter

576p:27MHz 720p,1080i:

74.25MHz (D4)

No

Check U100

No

- Other Video Output is OK.

- HDMI Connector must be connected to display device (e.g.TV).

- Check input mode of TV (HDMI)

Connect Cable Properly

Yes

Check Jack(J5)