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LG 50PK550 Service Manual
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LG 50PK550 Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : PB01A
MODEL : 50PK550
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL63141001(1005-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
50PK550-SA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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Summary of Contents for LG 50PK550

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com PLASMA TV SERVICE MANUAL CHASSIS : PB01A MODEL : 50PK550 50PK550-SA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Printed in Korea P/NO : MFL63141001(1005-REV00)

  • Page 2: Table Of Contents

    CONTENTS ..........................2 SAFETY PRECAUTIONS ......................3 SPECIFICATION.........................4 ADJUSTMENT INSTRUCTION ....................6 BLOCK DIAGRAM ........................14 EXPLODED VIEW ........................15 SVC. SHEET ..........................Copyright ©2010 LG Electronics Inc. All rights reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright ©2010 LG Electronics Inc. All rights reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Specification

    Safety : UL, CSA, IEC specification, CE EMC : FCC, ICES, IEC specification, CE Model Name Market Appliance 50PK550-SA Brazil Safety : IEC/EN60065 Copyright ©2010 LG Electronics Inc. All rights reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 deg ~ 60 deg 2) Humidity : 0 % ~ 90 % Copyright ©2010 LG Electronics Inc. All rights reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Adjustment Instruction

    (1) EDID (The Extended Display Identification Data ) (2) Color Temperature (White Balance) Adjustment (3) Make sure RS-232C control (4) Selection Factory output option Copyright ©2010 LG Electronics Inc. All rights reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 RGB 1080p adjustment in RGB input mode If you success RGB 1080p Adjust. You can see “ADC RGB-DTV Success” Copyright ©2010 LG Electronics Inc. All rights reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 - Operate DDC write S/W (EDID write & read) - It will operate in the DOS mode. < For write EDID data, setting Jig and another instruments > - EDID data (Model name = LG TV) - 2010 EDID DATA CHECK SUM. BLOCK(0)
  • Page 9 Start of offset adjust (Inner white pattern) End of offset adjust End of White Balance adjust (Inner pattern disappeared) Copyright ©2010 LG Electronics Inc. All rights reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 - After all adjustment finished, with Enter (_ key) turn to Ez-Adjust mode. Then with ADJ button, exit from adjustment mode Copyright ©2010 LG Electronics Inc. All rights reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 GND. ESD test: Test between Power cord GND and Live and neutral. (4) Leakage current: Set to 0.5mA(rms) Copyright ©2010 LG Electronics Inc. All rights reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 B-Gain adjustment Value (default 128) R-Offset adjustment Value (default 128) G-Offset adjustment Value (default 128) B-Offset adjustment Value (default 128) Copyright ©2010 LG Electronics Inc. All rights reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 - DO NOT REMOVE USB MEMORY CARD FROM USB PORT WHEN YOU FIND BELOW DESCRIPTION - " Do not remove the memory card from the port! " Copyright ©2010 LG Electronics Inc. All rights reserved. - 13 - LGE Internal Use Only...

  • Page 14: Block Diagram

    BLOCK DIAGRAM Copyright ©2010 LG Electronics Inc. All rights reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 15 - LGE Internal Use Only Copyright ©2010 LG Electronics Inc. All rights reserved. Only for training and service purposes...
  • Page 16 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR USB HUB THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 17 EAX61354901 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. JACK Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 18 EAX61354901 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LVDS/RS232//RGB Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 19 EAX61354901 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 20 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. AUDIO AMP Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 21 EAX61354901 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TUNER Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 22 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SMPS POWER Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. DDR2 MEMORY INTERFACE Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 24 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. BCM VIDEO IN/BCM POWER Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 25 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. BCM AUDIO/LVDS Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 26 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. BCM GPIO/NEC MICOM/FLASH/SYS EEPROM Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 27 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR ETHERNET/WIRELESS THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2010 LG Electronics Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 29 Great Company Great People Brazil BBTV Training manual Brazil BBTV Training manual Contents - Block Diagram - System Design - Trouble Shooting Guide ATSC  Group  Brazil Team Last updated 2009.11.14...
  • Page 30 Power-Up Sequence BCM3556 (Main Chip) There are no power sequence requirements. Any sequence will be acceptable All supplies have a minimum ramp up time of 100us. There is no maximum ramp up time restriction RESET should be held active during ramp up and at least 10ms after all voltages are above 95% of their specified nominal levels Min 100us All power rails above...
  • Page 31 10년 GP2 BR Chassis Power sequence (A2.5V -> D3.3V, D1.8V, D11.2V) : 844ms) D3.3V A2.5V D1.8V D1.2V Customer Oriented R&D Breakthrough...
  • Page 32 10년 GP2 BR Chassis SYS_RESET = 43.2ms (OK) SYS_RESET A2.5V D1.8V D1.2V Customer Oriented R&D Breakthrough...
  • Page 33 10년 GP2 BR Chassis ramp up time = ALL OK 10년 GP2 BR Chassis ramp up time : check!! D1.2V = 14ms D1.8V = 3.28ms A2.5V = 376㎲ D3.3V = 1.76ms Customer Oriented R&D Breakthrough...
  • Page 34 10년 GP2 BR PDP Audio amp reset spec On power up, reset be held low = 222ms > 100㎲ Customer Oriented R&D Breakthrough...
  • Page 35 I2C Design CH0_3.3V Main Main Tuner Tuner 0xXX 0xXX CH1_3.3V HDMI S/W DEMOD Wireless HDMI S/W DEMOD Wireless TDA19997 MN886644 Download TDA19997 MN886644 Download 0xB0 0x9E 0xXX 0xB0 0x9E 0xXX BCM3556 BCM3556 CH2_3.3V EEPROM EEPROM 24LC512 Module 24LC512 Module 0xXX 0x1C 0xXX 0x1C...
  • Page 36 GPIO Structure GPIO Signal Name Direction Description MODEL_OPT_4 MODEL_OPT_5 SIDE_AV_DET HDMI_HPD_4 HDMI_HPD_3 MODEL_OPT_1 DSUB_DET BT_RESET /RST_HUB BCM_RX BCM_TX FLASH_WP MODEL_OPT_0 AUD_MASTER_CLK HDMI_OPT_2 HDMI_HPD_1 HDMI_POWER_1 EPHY_ACTIVE_Y EPHY_LINK BCM_AVC_DEBUG_TX1 MOD_ROM_TX BCM_AVC_DEBUG_RX1 MOD_ROM_RX Customer Oriented R&D Breakthrough...
  • Page 37 GPIO Structure GPIO Signal Name Direction Description VREG_CTR TUNER_RESET HDMI_POWER_2 COMPOSITE1_SW MODEL_OPT_3 BT_ON/OFF WIRELESS_DL_RX WIRELESS_DL_TX FE_TS_VAL HDMI_POWER_3 HDMI_POWER_4 MODEL_OPT_2 RF_SWITCH_CTRL COMP1_SW DDC_SCL DDC_SDA DDC_SDA(W_OR) DEMOD_RESET COMP2_SW RF_BOOSTER Customer Oriented R&D Breakthrough...
  • Page 38 GPIO Structure Customer Oriented R&D Breakthrough...
  • Page 39 GPIO Structure Customer Oriented R&D Breakthrough...
  • Page 40 GPIO Structure Customer Oriented R&D Breakthrough...
  • Page 41 GP2 BRAZIL BCM 전원계통 (05.06) IC901 (RGB EEPROM) IC701 NEC MICOM +5V_ST +3.3V_ST +3.3V_NEC_ST IC506 L502 IC14 (LDO) NEC MICOM EEPROM D1.2V A1.2V IC503 L510 L503 (DCDC) D1.2V D1.8V D1.8V IC501 L500 (DCDC) +1.8V_HDMI IC401,402,403,404 IC800 L800 HDMI S/W (DDR3) D3.3V A3.3V P_+5V...
  • Page 42 Trouble Shooting Guide for LG Service Man Please check system, after power Off/On one time Power-Up Boot Fail Trouble Shooting No OSD Trouble Shooting Digital TV Video Trouble Shooting Analog TV Video Trouble Shooting Component Video Trouble Shooting RGB Video Trouble Shooting...
  • Page 43 1. Power-Up Boot Fail Trouble Shooting Check P500 All Voltage Level Check Power connector Replace Power board (17V, 5V, 3.3V, 5V_ST) Check All Voltage Level Replace one of Bead at Bead & Recheck Replace one of IC504IC500/ L502 / Check Voltage Level 3.3V at L514 L514 &...
  • Page 44 2. No OSD Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN)
  • Page 45 2. No OSD Trouble Shooting Check P500 5V_ON Check GPIO Path of Micom Check P202 DISP_EN Check 5V Voltage Level Check Power connector Replace Power board at P500 Check 5V Voltage Level Replace one of L501 at L501 & Recheck Check all multi voltage Check power up boot sequence (1.2v, 3.3v, 1.8v)
  • Page 46 No OSD Trouble Shooting (Module Power Sequence) Customer Oriented R&D Breakthrough...
  • Page 47 Module Control Trouble Shooting “TILT” on Adjust Remocon Check SMPS & cable PDP Module Power is OK? : PDP internal pattern displays? Replace PDP Module PDP Module is OK. Check Signal Check P202 SCL,SDA line SCL,SDA Replace X1 : X1 output line R244, R252 <...
  • Page 48 3. Digital TV Video Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out)
  • Page 49 3. Digital TV Video Trouble Shooting Check RF Cable Check Tuner(TU600) Power Replace one of Bead (5.0V, 3.3V, 1.2V) & Recheck Check IF Signal pin #17, 18 Maybe Tuner has problems Check Demodulator Power Replace L604 / IC601 (3.3V, 1.2V) L604, IC601 Check Demodulator X-TAL Replace X-TAL (X600)
  • Page 50 4. Analog TV Video Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out)
  • Page 51 4. Analog TV Video Trouble Shooting Check RF Cable Replace one of Check Tuner Power L601/L600/L602 (5.0V, 3.3V, 1.2V) & Recheck Check CVBS Signal Maybe Tuner(TU600) has problems TU600 #11 Pin Replace one of Check CVBS Signal C328/R308/Q602/R621 C328 & Recheck Maybe BCM3556(IC100) has problems Customer Oriented R&D...
  • Page 52 5. Component Video Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN)
  • Page 53 5. Component Video Trouble Shooting Check Signal Format Is it supported signal? Check Component Cable Check Component Jack1001 Replace Jack Replace one of Check Component Signal L1005/L1004/L1003/L1000/L1001 L1005/L1004/L1003/L1000/L1001 L1002 L1002 & Recheck Check Component Signal Replace it C317/C318/C319/C320/C321/C322 Maybe BCM3556(IC100) has problems Customer Oriented R&D Breakthrough...
  • Page 54 6. RGB Video Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN)
  • Page 55 6. RGB Video Trouble Shooting Check Signal Format Is it supported signal? Check RGB Cable Check RGB Jack JK901 Replace Jack Check RGB Signal Replace It & Recheck R912, R911, R910 Check Sync Signal Replace one of R900/R901/IC900 IC900 #11, #3 &...
  • Page 56 7. AV Video Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN)
  • Page 57 7. AV Video Trouble Shooting Check Signal Format Is it supported signal? Check AV Cable Check Jack JK1001/JK1000 Replace Jack Replace one of Check CVBS Signal R1005/R1004 R1005/R1004 & Recheck Replace one of Check CVBS Signal C329/C330/R307/R309/R316/R321 C329/C330/R307/R309/R316/R321 & Recheck Maybe BCM3556(IC100) has problems Customer Oriented R&D...
  • Page 58 8. HDMI Video Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN)
  • Page 59 8. HDMI Video Trouble Shooting Check Signal Format Is it supported signal? Check HDMI Cable Check HDMI Jack Replace Jack JK802, JK803, JK801, JK800 Check HDMI S/W Power(1.8V, 3.3V) Replace one of L800/L801 @ L800, L801 & Recheck Re-download EDID data Replace IC800 Maybe BCM3556(IC100) has problems...
  • Page 60 9. All Source Audio Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out)
  • Page 61 9. All Source Audio Trouble Shooting Make sure you can’t hear any audio Replace Speaker Check Speaker Check Connector P700 Replace Connector Replace one of Maybe TAS5709 has problems. Check Signal Capacitor, Register L700, L701 Replace It & Recheck Check IC700 Power 17V, 3.3V Replace It &...
  • Page 62 10. Digital TV Audio Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out)
  • Page 63 10. Digital TV Audio Trouble Shooting Follow procedure digital TV video Check video output trouble shooting Follow procedure All source audio Maybe BCM3556 internal audio DSP trouble shooting has problems. Replace It Customer Oriented R&D Breakthrough...
  • Page 64 11. Analog TV Audio Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out)
  • Page 65 11. Analog TV Audio Trouble Shooting Follow procedure analog TV video Check video output trouble shooting Check Tuner Power Replace one of L601/L600/L602 (5.0V, 3.3V, 1.2V) & Recheck Check SIF Signal Maybe Tuner(TU600) has problems TU600 #9 Pin Replace one of Check SIF Signal R315/C308/Q603/C616/R622 C308...
  • Page 66 12. Component / RGB / AV Audio Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM...
  • Page 67 12. Component / RGB / AV Audio Trouble Shooting Follow procedure external input Check Video Output video trouble shooting Check Jack JK1001/JK1000/JK901 Check equipment / Replace Jack Comp (Y) Comp (Pb) Comp (Pr) Replace one of C317/C318/C319/C320/C321/ Check Signal C322C329/C330/C314/C315/C316 C317/C318/C319/C320/C321/C322 R912/R911/R910/R1005/L1002 C329/C330/C314/C315/C316...
  • Page 68 13. HDMI Audio Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN)
  • Page 69 13. HDMI Audio Trouble Shooting Follow procedure HDMI video Check video output trouble shooting Check HDMI S/W Power(1.8V, 3.3V) Replace one of L800/L801 @ L800, L801 & Recheck Re-download EDID data Replace IC800 Follow procedure All source audio Maybe BCM3556 audio block has trouble shooting problems.
  • Page 70 14. USB Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN) AV1_LR...
  • Page 71 14. USB Trouble Shooting Check USB 2.0 Cable Check USB device If device is 2.5 inch HDD, Check power adaptor Check USB HUB X-TAL Replace X-TAL(X1100) Check USB Input voltage(D3.3V) Check input voltage Check 5V voltage level at Replace one of analog switch(IC1102, IC1101) IC1102, IC1101 &...
  • Page 72 15. Digital TV Recording Fail Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input)
  • Page 73 15. Digital TV Recording Fail Trouble Shooting Follow procedure digital TV Check video/audio output video/audio trouble shooting Check HDD Replace HDD Check USB block Use USB Trouble shooting guide Maybe IC1100 has problems Maybe BCM3556(IC100) USB block Replace It (Only PK950) has problems.
  • Page 74 16. Wireless Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN) AV1_LR...
  • Page 75 16. Wireless Trouble Shooting Check JK1201 Replace JK1201 Replace one FET(Q1201) & Check 17V voltage (Q1201) Recheck Replace resister (R1219,R1226) Check I2C (R1219, R1226) & Recheck Maybe IC100 has problems Replace It (Only PK950) Customer Oriented R&D Breakthrough...
  • Page 76 17. Ethernet Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN) AV1_LR...
  • Page 77 17. Ehternet Trouble Shooting Check JK1200 Replace JK1200 Replace one bead(L1200) & Check 2.5V voltage (L1200) Recheck Maybe IC100 has problems Replace It (Only PK950) Customer Oriented R&D Breakthrough...
  • Page 78 18. Wi-Fi Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN) AV1_LR...
  • Page 79 18. Wi-Fi Trouble Shooting Check JK1101 Replace JK1101 Replace one bead(L501) & Check Multi 5V voltage (L501) Recheck Replace IC(IC1102) & Check USB OCP IC(IC1102) : OCD, CTL pin Recheck Replace IC504(LDO) & Check USB HUB IC(IC1100) Recheck Voltage 5,10,15,23,29,35 pin Check USB HUB IC(IC1100) Replace IC(IC1100) &...
  • Page 80 19. Bluetooth Trouble Shooting (Front-end) (System + DVR + Scalar) DDR2 NANDFlash NANDFlash DDR2 512MB 512MB(128*4) 512MB(128*4) 512MB 1080P CVBS_LIVE LVDS ISDB-T/ SIF1 CVBS_LIVE PAL/NTSC SPDIF SIF_LIVE BCM3556 BCM3556 Demodulator (400M MIPS) (400M MIPS) I2S_BCM MN884433 EXT_IN HDMI0_BCM USB2.0 (External Input) (Audio Out) (LAN) AV1_LR...
  • Page 81 19. Bluetooth Trouble Shooting Check P1102 Replace P1102 Replace one resister (R1114) & Check Multi 3.3V voltage (R1114) Recheck Check DM,DP Replace B/T Module P1102 6,8 pin Maybe IC100 has problems Replace It (Only PK950) Customer Oriented R&D Breakthrough...

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50pk550-sa