Samsung Electronics 4-1

Troubleshooting

4.Troubleshooting4-1 CheckpointsbyErrorMode

4-1-1 MainPower

No power detected(Stand by LED off)

Change SMPS.

Check Main PCB

NoChange fuse

No

Check Main PCB

Yes

FR1 is OK?

ICFB5401 Pin 1 is 2.5VCON3 Pin 12, 13, 14 is 5.4V?No

4-2 Samsung Electronics

Troubleshooting

4-1-2 NoSound

Check speakers.(speaker change)

Yes

Yes

Replace AMP IC.(AIC4, AIC19)

No

1Check JA5 input signals.

(1khz signal)

No Sound

No

Check Power Lines.(Check IC36).

Check DAC output signal lines between IC10 and AIC4 and

AIC19

Yes

Yes

Replace IC10.

No

Check DAC3.3V of IC10(pin 86)

3Check MPEG DAC output

(1.7v offset) (pin 83, 84, 85, 88, 89, 90of IC10 ES8398)

No

Check jack Input.

Check AMP input.

Check MPEG Ouput.

Refer to wave pattern image of Fig. 4-1.

Refer to wave pattern image of Fig. 4-2 and Fig. 4-3.

Refer to wave pattern image of Fig. 4-4.

2Check AIC4, AIC19 input signals

(AC54, AC55, AC56,AC1, AC2, AC3)

Check MPEG DAC Power.

Samsung Electronics 4-3

Troubleshooting

DTP3

LTDL-RX16S01B

1JA4

A_GND

PWM_C_P

PWM_SW_P

PWM_RL_P

PWM_RR_P

PWM_FL_P

PWM_FR_PPWM3_L

PWM3_R

AR23

100OHM1/16W

10V

1/16W470OHM

DTP1

DTP2

0.01OHM5000MA

C25710UF

2

R340

L45

3.3KOHM

1/16W

FAN_CHK

10OHM

C330

16V

1UF

5267-02A

1SS355-TE-17

2A_GND

1/16W 10V10UF

R504

1/16W

FAN_SD

1/16W

10UF

C305

R464

16V

10UF

16V

C307

1/16W

47KOHM

R476

1/16W

R478

IC35

4.7KOHM

C313

16V

18KOHM

S4560

D30

1SS355-TE-1780V 80V

100KOHM

1/16W

R501

A_GND

R502

33KOHM

1/16W

6 531

10UF

+12V

R485

4.7KOHM

R503

2SC1008-Y

R465

A_GND

4

LHPR5

10KOHM

1/10W

1/16W

1/16W

LHPR13

1NF

1/16W

LHPC1

LHPR3

1/16W

10KOHM

LHPR8

4.7KOHM

1.8KOHMLHPR4 1/16W

LHPR127.5KOHM

LHPC7

1/16W

50V

680PF

S4560

65

2

LHPR14

220UH

1/16W

VAA+5V

8

LHPC9

10UF

1/16W

10KOHM

A_GND

100PF

50V

LHPC12

LHPR15

100PF

50V

LHPC13

7

100OHM

VSS-5V

IC32

LHPC11

A_GND

10UF

22UF

3

DGND

LHPL1

R516

R515R514

21

CN12

C320

R500

8 7

D34

R468Q29

LHPR16

LHPL2LHPR18

LHPR17

LHPC10LHPC6

4 3 1

LHPR10

LHPC8

LHPR11

LHPC5

LHPR9LHPC2

AR20

AR21

AR22

AR24

AR25

1/16W

1W

1/16W

SPDIF_IN

680PF

6.3V 33OHM

4.7KOHM

16V

220UH

A_GND

4.7KOHM

A_GND

1.8KOHM

25V

7.5KOHM1/16W

1/16W

1/16W

47KOHM

A_GND

100OHM

1/16W

0OHM

1/16W4.7KOHM

+12V

33OHM

1/16W

PWM1_R

PWM1_L

50V

D5V

1/16W

1/16W

1/16W100OHM

100OHM

100OHM

1/16W

PWM2_R

PWM2_L

50V

LINE_O_L

LINE_O_R

50V

27OHM

+12V

16V

1/2W

15KOHM

1/16W

1/16W

33KOHM

100OHM

22UF

4.7KOHM

10KOHM

1/16W

A_GND

6.3V

1NF

10UF

3

2

1

VOUT

GND

VCCIN2+

VEE OU

T2 VCC

IN2-

IN1+

IN1-

OUT1

EB

C

IN2+

VEEOU

T2VCC

IN2-

IN1+

IN1-

OUT1

E

BC

AMP, page 7-8

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-1>

1

1

1

4-4 Samsung Electronics

Troubleshooting

AUDIO AMP-2, page 7-10

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-2>

2

2

2

Samsung Electronics 4-5

Troubleshooting

AUDIO AMP-3, page 7-11

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-3>

2

2

2

4-6 Samsung Electronics

Troubleshooting

MPEG, page 7-5

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-4>

3

3

3

Samsung Electronics 4-7

Troubleshooting

4-1-3 Composit(Videoout)

Composit (Video out)

Check 3.3V power lines from IC23 to IC36.

No Check if the pin 7, 8 of IC23 are 3.3V.

Check if VDD of 3.3V is measured at the pin 82,

78, 72 of IC10

No

NoCheck if VDD of 3.3V is measured at the pin

10 of IC36.

Yes

1Check if VDAC output is

measured at the pin 77 of IC10 ES8398

Check if output is measured at the pin 14

of IC36 THS7374

Yes

Replace the IC23 IC.

2Check if composite video output is

measured at the JA1.

Replace the IC10 IC

No

Yes

Replace the IC36.

Yes

No

Check MPEG output

Check Video switch.

Check JACK Output

Check the JA1 connectivity and replace.

Refer to wave pattern image of Fig. 4-5.

Refer to wave pattern image of Fig. 4-6.

4-8 Samsung Electronics

Troubleshooting

MPEG, page 7-5

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-5>

1

1

1

Samsung Electronics 4-9

Troubleshooting

AV I/O, page 7-7

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-6>

2

2

2

4-10 Samsung Electronics

Troubleshooting

4-1-4 Component(Y,Pb,Pr)

Component (Y, Pb, Pr)

Check 3.3V power lines from IC23 to IC36.

No Check if the pin 7, 8 of IC23 are 3.3V.

Check if VDD of 3.3V is measured at the pin 82, 78,

72 of IC10.

No

NoCheck if VDD of 3.3V is measured at the pin

10 of IC36.

Yes

1/2/3Check if YDAC,CADC

and UDAC output is measured at the pin 76, 80 and 81 of

IC10 ES8398.

4/5/6Check if output is measured at the pin of 11,13 and 12 of

IC36 THS7374.

Yes

Replace the IC23 IC.

Check if component video output is measured at

the JA1.

Replace the IC10 IC.

No

Yes

Replace the IC36.

Yes

No

Check MPEG output

Check Video switch.

Check JACK Output

Check the JA1 connectivity and replace.

Refer to wave pattern image of Fig. 4-7 and Fig. 4-8.

Refer to wave pattern image of Fig. 4-9 and Fig. 4-10.

Samsung Electronics 4-11

Troubleshooting

MPEG, page 7-5

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-7>

21

12

2

1

4-12 Samsung Electronics

Troubleshooting

MPEG, page 7-5

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-8>

3

3

3

Samsung Electronics 4-13

Troubleshooting

AV I/O, page 7-7

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-9>

4

5

45

4

5

4-14 Samsung Electronics

Troubleshooting

AV I/O, page 7-7

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-10>

6

6

6

Samsung Electronics 4-15

Troubleshooting

4-1-5 HDMIVideo

Check HDMI POWER supply.

(PLL_3.3V, VDD1.2v)

Yes

Yes

Check 3.3V power lines

No

Check IC11 power (3.3V)

1Check Pin 117, 118, 120, 121, 123, 124, 126, 127

of IC10

Analog (Composite)Video OK but HDMI

No

Replace MPEG IC

Yes

Yes

Check PLL3.3V lines and VDD1.2V lines and R150,

R151, R152 value.

No

Check Voltage pin110 pin of IC10(1.5V~1.8V)

Check if 480p output Is ok.

No

Check jack Input.

Check AMP input.

Check MPEG Ouput.

Yes Please, Call to Samsung A/S Center.Replace MPEG IC

Refer to wave pattern image of Fig. 4-11.

4-16 Samsung Electronics

Troubleshooting

33

MPEG, page 7-5

CN9

CN4

IC15

IC10

IC11

IC21

IC7

CN

1

CN

2

AIC4 AIC19

CN

5

AC

ON

1

IC36

MAIN PCB Top, page 6-8

<Fig. 4-11>

1

1

1

Samsung Electronics 4-17

Troubleshooting

4-2 MeasurestobetakenwhentheProtectionCircuitoperates

4-2-1 SMPSProtection

The Condition of Power Protection Active.1. Voltage of SMPS’s +, - PVDD (+30V, -30V) is higher or lower than Standards

Normal Condition Voltage Range: PVDD (+30V, -30V): about +30V, -30V2. Over-current occurs to FET (Over-output or Output short)3. FET’s temperature exceed 150°C.4. No supply voltage on GATE DRIVER.

4-2-2 AMPPre-InspectionrelatingtoPowerProtection

If you think, there are problems at the AMP PCB, you can check the pcb without disassemble the set. (Caution!!: Do not connect the power cord during bellow test!)

MeasurementResistanceusingTester- Approximately

C550 C650 C450

F/R CH 1.8Ω 1.8Ω 1.8Ω

CENTER 1.8Ω 1.8Ω 1.8Ω

SUBWOOFER 1.8ΩΩ 1.8Ω 1.8Ω

<Table 4-1>

If Measured Resistance is very different from above numbers. There is a Problem. →AMPPCBProblem

5.1CHSPEAKEROUTPUT

GND

FRONTR CENTER FRONTL

REARR REARLSUBWOOFER

4-18 Samsung Electronics

Troubleshooting

4-3 MICOM,MPEGInitialization&Update

Micominitial

In no Disc condition, press ‘STOP’ button of Main Unit more than 5 seconds, VF Display will happen to INIT and M int. Then Initialization complete.

MicomUpdate

1. Prepare or Make a DISC-CD or DVD or USB that contains “C550WWM.SSP’ file for update.

2. Play the USB, then “updating” will appear on the screen, then Power will go out after showing ‘complete’ on the screen.

3. Press “Power” key and Press ‘Stop’ button of the remote control more than 5 seconds in No Disc.

<Fig. 4-12 Connecting USB>

<Fig. 4-13 TV Display (On Updating)>

<Fig. 4-14 Update Start>

Samsung Electronics 4-19

Troubleshooting

CheckingoutMICOM&MPEGflashVersion

1. On Root state, Select ‘Set up’.

2. Press “Enter” and move Support.

3. Press “Enter”.

4. Check product information: “SW ver” on TV Display and “Micom SW Ver” on Front ASS’y VFD.

<Fig. 4-15 Connecting USB>

<Fig. 4-16 TV Display (On Updating)>

<Fig. 4-17 Update Start>

4-20 Samsung Electronics

Troubleshooting

DVDflashInitialization&Update

1. Prepare a DISC-CD or DVD or USB that contains ‘C550WWB.ROM’ file for Update.

2. Play the DISC or USB, then ‘Updating’ will appear on the screen, then Power will go out and on.

3. Then DISC-TRAY will open, then remove the DISC or USB, making the Unit as ‘NO DISC’ state.

4. Press ‘STOP’ button of Main Unit for more than 5 seconds, Display Indicator shows ‘INITIALIZE’ then Power goes out.

<Fig. 4-19 TV Display (On Updating)>

<Fig. 4-20 Update Start>

<Fig. 4-18 Connecting USB>

Samsung Electronics 4-21

Troubleshooting

TEST

4-4 Buyer-RegionCodeSettingMethod

4-4-1 TheinsertingmethodofRegionCodeafterreplacingtheMainPBA

[Reference]

- When replacing the Main PBA and System Micom should be inserted the region code.- The set is not working properly if you don't insert the region code.- The region code is inserted by the remote control.

1. Press the “AUX” button on the remote control.

2. Press the "TUNER MEMORY" button on the remote control during 4~5 seconds.

3. After step (2), you can see “TEST” on the VFD.

4. When you see “TEST” on VFD, Insert number “4”, “6” to start Region Code setting mode.

4-22 Samsung Electronics

Troubleshooting

5. Afterstep(4),youcansee“−−”ontheVFD. Insert the Region Code (Below table) corresponding model with “0 ~ 9” buttons on the remote control.

Option Table

AreaHT-C530

RegionCodeHT-C650

RegionCodeHT-C450

RegionCodeRemark

Africa / Pakistan 00 30 60

Brazil 01 31 61 C460 - 90

Canada 02 32 62

China (semi_mic) 03 33 63

Europe 04 34 64

Indonesia / Hongkong 05 35 65

Japan 06 36 66

Korea 07 37 67

Latin American 08 38 68

Mexico 09 39 69

Philippines 10 40 70

Russia (full_mic) 11 41 71

Russia (semi_mic) 12 42 72

South Africa 13 43 73

Taiwan 14 44 74

USA 15 45 75 C460 - 91

Newzealand 16 46 76

England 17 47 77

Australia 18 48 78

Iran (HACO) 19 49 79

India 20 50 80

Israel 21 51 81

Middle Asia 22 52 82

Asia 23 53 83

Singapore 24 54 84

<Table 4-2>

− −

Samsung Electronics 4-23

Troubleshooting

6. After step (5), you can see “15 USA” on the VFD. It means that currently System Micom program is installed by USA specification.

7. Turn the Power off.

[Tip]

In case of System Micom and EEPROM problem, you can apply to this. For example, during Updating program of System Micom, if Updating fail is happened, it is impossible to turn on the system from stand-by status. The system will keep the stand-by status continuously, and the touch-key function will never work.In this case, you have to change System Micom, and set up the Buyer Region code again. In case of EEPROM, you don't need to care about it. After set-up the Region code, System Micom will store the information of the region code to EEPROM automatically.

15USA