VESTEL MB185 IDTV Service Manual Download Page 57

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GS100

GS101

A X M

PROJECT NAME :

VESTEL

SCH NAME :

DRAWN BY :

T. SHT:

<YOUR NAME HERE>

MAIN_POWER

19/04/2021:11:16

17MB185

AVDD_DDR_DRAM_A-6

AVDD_DDR_DRAM_A-5

AVDD_DDR_DRAM_B-3

AVDD_DDR_DRAM_B-1

AVDD_DDR_DRAM_A-4

AVDD_DDR_DRAM_A-3

AVDD_DDR_DRAM_A-1

AVDD_DDR_DRAM_B-4

AVDD_DDR_DRAM_B-2

AVDD_DDR_DRAM_A-2

1V_VCC_CPU 10 pins

VDDC 22 pins

DVDD_DDR, 4 pins

AVDDL_MOD, 2 pins

AVDD_LDO, 1pin

AVDD_NODIE, 3pins

VDDP33, 2pins

VDDP_3318-NAND, 2pins

R232

240R

R231

240R

R226

100n

C279

R229

240R

R234

TP136

TP135

100n

C288

R227

1V5_DRAM

R233

C283

1V5_DRAM

1V_VCC_CPU

100n

16V

C255

16V

100n

C256

C238

16V

100n

25V

C208
10u

16V

C237

100n

1V5_DRAM

470n

C282

6V3

470n

6V3

C274

AVDD_DDR_VBP_A

AVDD_DDR_VBN_A

6V3

470n

C261

AVDD_DDR_VBN_B

470n

6V3

C270

100n

16V

C222

C253

100n

16V

C254

100n

16V

C236

100n

16V

C235

100n

16V

100n

C221

1V_VCC_CORE

16V

C217

100n

16V

100n

C211

16V

C206

100n

C184
10u
25V

16V

100n

C213

C218

100n

16V

100n

C232

16V

100n

C231

100n

C200

16V

C205

100n

16V

100n

C249

16V

C264

100n

C250

100n

16V

C196

16V

100n

C212

16V

C252

100n

16V

100n

16V

C234

16V

100n

C251

C193

100n

16V

C201

100n

1V_VCC_CORE

1V5_DRAM

25V

10u

C197

16V

100n

C280

100n

16V

C262

100n

C287

16V

C281

100n

16V

C271

100n

16V

25V

C192
10u

25V

10u

C216

16V

100n

C273

16V

100n

C229

16V

100n

C230

100n

C248

16V

C272

100n

C245

16V

100n

6V3

C263

470n

AVDD_DDR_VBP_B

470n

6V3

C269

1V5_DRAM

C189

25V

10u

16V

C260

100n

16V

C246

100n

3V3_STBY

100n

C313

16V

100n

C314

16V

C315

100n

3V3_VCC

16V

C301

100n

C290

100n

16V

C203

100n

C204

16V

C210

100n

C199

16V

100n

GND1

C278

100n

R225

1V5_DRAM

R235

C277

DRAM_VREF_A

DRAM__VREF_A

DRAM_VREF_B

DRAM_VREF_A

DRAM_VREF_B

C257

100n

R228

1V5_DRAM

1V_VCC_CPU

1V_VCC_CORE

C233

100n

16V

100n

C219

C220

100n

16V

1V5_DRAM

AVDD_DDR_VBP_A

AVDD_DDR_VBN_A

AVDD_DDR_VBP_B

AVDD_DDR_VBN_B

3V3_STBY

3V3_VCC

AVDD_LDO

1V8_VCC

DVDD_NODIE

16V

C284

100n

C291

16V

1V5_DRAM

AVDD_DDR_B

AVDD_DDR_A

1V8_VCC

S142

16V

100n

C316

AVDD_LDO

DVDD_NODIE

C311

100n

16V

C310

2u2

6V3

16V

C194

100n

C198

16V

C247

16V

100n

AVDD_DDR_A, 5 pins

AVDD_DDR_B, 5 pins

AVDD_DRAM_A, 2 pins

AVDD_DRAM_B, 2 pins

10u

C187

25V

150mA,20mil

20mA,20mil

600mA,40mil

C190

25V

10u

10mA,20mil

AVDDL_MOD

DVDD_DDR

3.8A,160mil

1V_VCC_CPU 10 pins

VDDC 22 pins
3.8A,160mil

250mA,25mil

150mA,20mil

20mA,20mil

S140

S141

1V2_VCC

1V_VCC_CORE

MOD_VTERM

MOD_VTERM option

3V3_VCC

C300

100n

16V

C305

100n

3V3_VCC

1V2_VCC_VTERM

TP183

TP184

25V

C303
10u

100n

16V

C289

C302

16V

100n

1V8_VCC

D124

PESD9N5VH

100n

16V

C309

100n

16V

C304

Summary of Contents for MB185 IDTV

Page 1: ...MB185 IDTV SERVICE MANUAL...

Page 2: ...SWITCH ADJ SAFE TPS25221 SOT23 6 U117 U109 37 9 CI INTERFACE 38 10 SOFTWARE UPDATE 39 Main Software Update 39 11 TROUBLESHOOTING 39 A No Backlight Problem 39 B CI Module Problem 41 C IR Problem 43 D K...

Page 3: ...eatre sound processor Rich internet connectivity and completed digital home network solution Dual stream decoder for 3D contents Multi purpose CPU for OS and multimedia Peripheral and power management...

Page 4: ...3 SSB LAYOUT Power Con MAIN IC CI LAN LNB ANT HDMI HP USB USB S PDIF Internal Wifi BT Connector LED CON T C O N B O A R D EMMC Audio Amp Speaker Con HDMI HDMI Subwoofer Amp Subwooferr Con...

Page 5: ...eed for external filtering For the best performance with next generation digital TV standards such as DVB T2 C2 the Si2151 delivers industry leading phase noise performance Features Worldwide hybrid T...

Page 6: ...5...

Page 7: ...6 3 S S2 TUNER U3 OPTIONAL Description Figure 2 Pin description...

Page 8: ...7 Features Block Diagram...

Page 9: ...lection DRC dynamic range control mute and volume control functions AD82587D has many built in protection circuits to safeguard AD82587D from connection errors Features 16 18 20 24 bit input with I2 S...

Page 10: ...4_ 0 24 THD N Sounds processing including Volume control 24dB 103dB 0 125dB step Dynamic range control Power clipping Channel mixing User programmed noise gate with hysteresis window DC blocking high...

Page 11: ...10 Figure 4 Functional Block Diagram Table 1 Absolute Maximum Ratings Table 2 Recommended Operating Conditions...

Page 12: ...11 B SUB WOOFER AMPLIFIER U1...

Page 13: ...12...

Page 14: ...13...

Page 15: ...s used for taking 12V_STBY voltage which is produced in power card Also socket is used for giving dimming backlight and standby signals with power card Power socket pinning is shown in above figure 12...

Page 16: ...omponents SW 1 Q103 FDS4685 8 2A 40V SW 2 Q104 DMG8402LDM 4 2A 30V DC DC 1 U101 TPS54528 ADJ 5A DC DC 2 U102 TPS563201 ADJ 3A DC DC 3 U105 TPS563201 ADJ 3A DC DC 4 U106 TPS563201 ADJ 3A DC DC 5 U113 T...

Page 17: ...16 A FDS4685 8 2A 40V Q103 Figure Pin description...

Page 18: ...02LDM Q104 Features Low RDS ON Low Input Capacitance Fast Switching Speed Low Input Output Leakage Lead Free By Design RoHS Compliant Note 1 Qualified to AEC Q101 Standards for High Reliability Pin de...

Page 19: ...ions and Eco mode operation at light loads Eco mode allows the TPS54528 to maintain high efficiency during lighter load conditions The TPS54528 also has a proprietary circuit that enables the device t...

Page 20: ...gh Side and 36 m Low Side High Efficiency less than 10 A at shutdown High Initial Bandgap Reference Accuracy Adjustable Soft Start Pre Biased Soft Start 650 kHz Switching Frequency fsw Cycle By Cycle...

Page 21: ...ivalent series resistance ESR output capacitors such as specialty polymer and ultra low ESR ceramic capacitors with no external compensation components TPS562200 and TPS563200 operate in Advanced Eco...

Page 22: ...VLO and TSD Protections Fixed Soft Start 1 ms APPLICATIONS Digital TV Power Supply High Definition Blu ray Disc Players Networking Home Terminal Digital Set Top Box STB Recommended Operating Condition...

Page 23: ...22 Electical Characteristics Pin functions and Electrical Characteristics...

Page 24: ...23 E MP8774GQ Z 12A QFN16 U122 Pin Assignment...

Page 25: ...24...

Page 26: ...25...

Page 27: ...26 6 MICROCONTROLLER MTK G31 U108 Description...

Page 28: ...27 Features...

Page 29: ...28...

Page 30: ...29...

Page 31: ...30...

Page 32: ...31...

Page 33: ...32...

Page 34: ...33...

Page 35: ...34...

Page 36: ...35 Recommended operating condition...

Page 37: ...ntroller insulates NAND technology from the host This leads to faster product development as well as faster times to market The embedded flash management software or FTL Flash Transition Layer of eMMC...

Page 38: ...37 8 USB INTERFACE USB POWER SWITCH ADJ SAFE TPS25221 SOT23 6 U117 U109...

Page 39: ...38 9 CI INTERFACE 17MB185 Digital CI ve Smart Card Interface Block diagram Figure CI interface...

Page 40: ...of the USB ports on your TV 3 Power on TV and wait until you see the bootlogo 4 You should see logs like below 11 TROUBLESHOOTING A NO BACKLIGHT PROBLEM Problem If TV is working led is normal and ther...

Page 41: ...40 Panel power supply should be in panel specs Please check Q151 shown below also it can be checked TP276 STBY_ON OFF should be low for TV on condition please check Q114 s collector...

Page 42: ...tects pins mechanical positions of pins CI supply should be 5V when CI module inserted If it is not 5V please check CI_PWR_CTRL this pin should be low Please check mechanical position of CI module Is...

Page 43: ...42...

Page 44: ...43 C IR PROBLEM Problem LED or IR not working Check LED card supply on 17MB185 chasis...

Page 45: ...working Check keypad supply on 17MB185 E USB PROBLEMS Problem USB is not working or no USB Detection Check USB Supply It should be nearly 5V Also USB Enable should be logic high USB Control is option...

Page 46: ...s Check supply voltages of 24V_VCC VDD_AUDIO and 3V3_AMP with a voltage meter There may be a problem in headphone connector or headphone detect circuit when headphone is connected speakers are automat...

Page 47: ...ts may give a clue about the problem You can use VGA for Teraterm program connection H NO SIGNAL PROBLEM IN DVB S S2 MODE Problem No signal or Low signal in DVB S S2 mode Check signal cables and LNB v...

Page 48: ...T MODE Problem No signal or Low signal in DVB T mode Check signal cables and LNB voltage if there is no problem check SI2151 U118 supply voltages 3V3_TUNER If the above measurements are OK then chang...

Page 49: ...te controller You can see the service menu main screen below You can check SW releases by using this menu under Diagnostic title In addition you can make changes on video settings audio settings DAP P...

Page 50: ...49 13 GENERAL BLOCK DIAGRAM...

Page 51: ...C361 27p LNB_OUT C386 50V 1n 0p5 C382 50V 50V C384 1n C387 50V 1n C385 50V 3p3 1n 50V C383 C388 50V 1n LNB_ENABLE SYS_SDA SYS_SCL SYS_SDA SYS_SCL 13 10 9 11 12 5 16 15 14 M88TS6011 6 2 7 8 1 3 4 U114...

Page 52: ...U5 C4 A20 J5 D17 B3 A3 H5 P7 B2 E17 B1 E18 A6 Y8 C3 J4 E14 B4 Y3 B20 B5 C5 V5 H6 AC5 D14 C2 A5 AC9 P2 B6 C6 B10 B9 E2 B15 A19 F4 B7 B8 C8 A9 B12 C12 C13 B14 E5 C17 F6 C9 C14 A10 C10 D18 D2 B11 F5 C11...

Page 53: ..._HUB_DP USB_HUB_DN S175 S174 S171 S169 C408 18p 50V C420 50V 18p 2 4 1 3 X103 24MHz 1M R369 R346 100k 100k R347 100k R348 2 R321 4k7 1 2 1 R320 4k7 1 4k7 R319 2 DAA_SPDIF CN116 2 8 7 6 5 4 3 1 60R F13...

Page 54: ...15 14 13 12 11 10 9 8 7 6 5 4 3 2 33R R262 100R R308 33R R332 R315 33R 3n3 C322 S143 C323 3n3 S144 16V 100n C296 F126 220R 33R R257 33R R261 CN109 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5...

Page 55: ..._D1 TS1_D2 TS1_D3 TS1_D4 TS1_D5 TS1_D6 TS1_D7 TS1_CLK TS1_VLD TS1_SYNC PCM2_WAIT_N 2 U108 AD18 R28 T26 R26 V27 W26 U27 V26 T27 R27 U26 T28 AB22 AC19 AB18 AC22 AE20 AD20 AC20 AB20 AE21 AB19 AD19 AD17 A...

Page 56: ...R265 33k R267 10k 1 2 AMP_EN 100k R269 1 2 BC848B Q116 3 2 1 R279 100k 1 2 16V C317 100n 4k7 R253 AMP_MUTE 5V_VCC 4k7 R252 R290 10k1 2 10k R278 1 10k R289 1 2 100u C343 16V 1 2 VDD_AUDIO S150 1 2 10k...

Page 57: ...AF3 AE25 AE16 AE10 AE9 AE7 AE4 AE2 AD26 AD10 AD6 AD5 AD4 AC10 AB14 AA2 W10 W9 W8 V11 V12 V18 K27 K10 K9 J12 J10 J9 J8 J7 H26 H25 H21 H20 H19 H18 H16 H15 H14 H13 H4 G26 G25 G24 G22 G21 N22 N21 N20 N19...

Page 58: ...2 F105 60R S103 F106 60R CN102 12 11 10 9 8 7 6 5 4 3 2 1 CN103 12 11 10 9 8 7 6 5 4 3 2 1 TP111 1 TP113 1 TP112 1 TP114 1 power_pin1 power_pin1 power_pin9 power_pin9 Backlight On Off Circuit NC R2 n...

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