Philips 50PFL4909/F7 Service Manual
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Philips 50PFL4909/F7 Service Manual

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50" LCD TV
chassis PL14.24

Service Manual

Contents
50PFL4909/F7
PHILIPS
(Serial No.: DS1)
© 2014 Funai Electric Co., Ltd.
All rights reserved. No part of this manual may be reproduced, copied, transmitted, disseminated, transcribed,
downloaded or stored in any storage medium, in any form or for any purpose without the express prior written
consent of Funai. Furthermore, any unauthorized commercial distribution of this manual or any revision hereto
is strictly prohibited.
Information in this document is subject to change without notice. Funai reserves the right to change the content
herein without the obligation to notify any person or organization of such changes.
with the
design is a registered trademark of Funai Electric Co., Ltd and may not be used in any way
without the express written consent of Funai. All other trademarks used herein remain the exclusive property of
their respective owners. Nothing contained in this manual should be construed as granting, by implication or
otherwise, any license or right to use any of the trademarks displayed herein. Misuse of any trademarks or any
other content in this manual is strictly prohibited. Funai shall aggressively enforce its intellectual property rights
to the fullest extent of the law.
140306

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Summary of Contents for Philips 50PFL4909/F7

  • Page 1: Service Manual

    50” LCD TV chassis PL14.24 Service Manual Contents 50PFL4909/F7 PHILIPS (Serial No.: DS1) © 2014 Funai Electric Co., Ltd. All rights reserved. No part of this manual may be reproduced, copied, transmitted, disseminated, transcribed, downloaded or stored in any storage medium, in any form or for any purpose without the express prior written consent of Funai.

  • Page 2: Important Safety Notice

    IMPORTANT SAFETY NOTICE Proper service and repair is important to the safe, reliable operation of all P&F Equipment. The service procedures recommended by P&F and described in this service manual are effective methods of performing service operations. Some of these service special tools should be used when and as recommended.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Specifications ................1-1 Important Safety Precautions .

  • Page 4: Specifications

    SPECIFICATIONS < TUNER / NTSC > Description Condition Unit Nominal Limit 1. AFT Pull-In Range ±2.3 ±2.1 TV.ch.4 dBµV 2. Synchronizing Sens. CA.ch.31 dBµV CA.ch.87 dBµV < TUNER / ATSC > Description Condition Unit Nominal Limit 1. Received Freq. Range (-28dBm) ±100 ch.4 -76/0...

  • Page 5: Important Safety Precautions

    IMPORTANT SAFETY PRECAUTIONS Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.
  • Page 6 3. Design Alteration Warning - Do not alter or add 7. Product Safety Notice - Some electrical and to the mechanical or electrical design of this TV mechanical parts have special safety-related receiver. Design alterations and additions, characteristics which are often not evident from including, but not limited to circuit modifications visual inspection, nor can the protection they give and the addition of items such as auxiliary audio...
  • Page 7 Precautions during Servicing A. Parts identified by the # symbol are critical for safety. Replace only with part number specified. B. In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements.
  • Page 8 Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. 1.

  • Page 9: Standard Notes For Servicing

    STANDARD NOTES FOR SERVICING Circuit Board Indications How to Remove / Install Flat Pack-IC 1. The output pin of the 3 pin Regulator ICs is 1. Removal indicated as shown. With Hot-Air Flat Pack-IC Desoldering Machine: Top View 1. Prepare the hot-air flat pack-IC desoldering Bottom View machine, then apply hot air to the Flat Pack-IC Input...
  • Page 10 3. The flat pack-IC on the CBA is affixed with glue, so With Soldering Iron: be careful not to break or damage the foil of each 1. Using desoldering braid, remove the solder from pin or the solder lands under the IC when all pins of the flat pack-IC.
  • Page 11 With Iron Wire: 2. Installation 1. Using desoldering braid, remove the solder from 1. Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder the foil of each pin of the flat pack-IC on the CBA flux which is applied to all pins of the flat pack-IC, so you can install a replacement flat pack-IC more you can remove it easily.
  • Page 12 Instructions for Handling Semi- conductors Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work. 1. Ground for Human Body Be sure to wear a grounding band (1 MΩ) that is properly grounded to remove any static electricity that may be charged on the body.

  • Page 13: Cabinet Disassembly Instructions

    CABINET DISASSEMBLY INSTRUCTIONS Screw Torque Specification Step/ Fig. Loc. Part Removal Note Ref. Part Tightening Part Name Number Torque SCREW F-PAN BLACK_NI 4(S-9), CN3105, L10 GCHP3120 Digital Main +P-TITE M3X12.0 CN3801, CN3906, CBA Unit Jack Holder SCREW BIND 3CHROM L23 GBJS3060 +S-TITE M3X6.0 Stand 5.2±0.9lb·in...
  • Page 14 Important precautions concerning the LCD Panel Assembly: 1. When you disassemble/re-assemble the LCD Panel Assembly • Do not pull the FFC Cable and Board Cable forcefully when you re-assemble. • Be careful not to scratch the display panel when assembling. 2.
  • Page 15 (L-2) (L-2) (S-5) (L-2) (L-1) (S-6) [3] Rear Cabinet L (S-7) (S-2) [2] Rear Cabinet R (L-1) (S-4) (L-1) (S-3) Stand Neck (S-1) [1] Stand Base Assembly (S-1) Fig. D1 PL14.24-A_DC...
  • Page 16 [5] Digital Main CBA Unit Jack Holder (S-9) [4] Power Supply CBA (S-8) Fig. D2 PL14.24-A_DC...
  • Page 17 [8] Speaker Holder [10] IR Sensor (S-10) Hook CBA Unit * Sensor Shield [6] Stand Bracket (S-10) [9] Function [7] Speaker CBA Unit * Hook Function Knob Knob Frame Fig. D3 : Make sure to read all the precautions on page 4-2 when you disassemble/re-assemble the Function CBA Unit or the IR Sensor CBA Unit.
  • Page 18 [11] LCD Panel Assembly * Decoration Plate Leading Edge Cover LED Lens Hook Fig. D4 : Make sure to read all the precautions on page 4-2 when you disassemble/re-assemble the LCD Panel Assembly. PL14.24-A_DC...
  • Page 19 TV Cable Wiring Diagram To LCD Panel To LCD Panel Assembly Assembly Power Supply CBA Digital Main CBA Unit CN1101 CN3906 CN1301 CN501 CN3601 Function CBA Unit CN601 CN3801 CN3105 To AC Cord To Speaker CN4051 IR Sensor CBA Unit CN4052 CN4001 Fig.

  • Page 20: Electrical Adjustment Instructions

    ELECTRICAL ADJUSTMENT INSTRUCTIONS 1. Purity Check Mode General Note: “CBA” is abbreviation for “Circuit Board Assembly.” This mode cycles through full-screen displays of red, Note: Electrical adjustments are required after green, blue, and white to check for non-active pixels. replacing circuit components and certain 1.

  • Page 21: White Balance Adjustment

    The White Balance Adjustment should be 5. Press [3] button to select the “HDB” for High Drive Blue adjustment. (“HDB” appears in the screen.) performed when replacing the LCD Panel 6. Press [MENU] button. The internal Raster signal or Digital Main CBA. appears in the screen.
  • Page 22 13. Press [9] button to select the “LDB” for Low Drive Blue adjustment (“LDB” appears in the screen.) and press [CHANNEL UP/DOWN] buttons to adjust the color temperature. Internal (Single) 14. Press [7] button to select the “LDR” for Low Drive Red adjustment (“LDR”...

  • Page 23: How To Initialize The Lcd Tv

    HOW TO INITIALIZE THE LCD TV The purpose of initialization is to place the set in a new out of box condition. The customer will be prompted to select a language and program channels after the set has been initialized. To put the program back at the factory-default, initialize the LCD TV using the following procedure.

  • Page 24: Firmware Renewal Mode

    FIRMWARE RENEWAL MODE Equipment Required Update file selection screen appears as follows. (Files included in the USB storage device are a. USB storage device displayed.) b. Remote Control Unit " * " differs depending on the models. Firmware Update Procedure Select an upgrade file *****_******.upg 1.

  • Page 25: Troubleshooting

    TROUBLESHOOTING [Power Supply Section] FLOW CHART NO.1 The power cannot be turned on. Is the fuse (F602) normal? See FLOW CHART No.2 <The fuse blows out.> Check if there is any leak or short-circuit on the primary circuit component and repair it if defective. (C625, C665, D601, D602, D603, D604, D605, D606, D607, D613, D618, D621A, D623, D664A, IC601, Is the P-ON+21V line voltage normal?
  • Page 26 FLOW CHART NO.5 P-ON+21V is not output. Check C651, C652, D650 and their periphery circuit. Repair it if defective. FLOW CHART NO.6 AMP+13V is not output. Check C654, C655, D653, D654, D655 and their periphery circuit. Repair it if defective. FLOW CHART NO.7 AL+3.3V is not output.
  • Page 27 [Video Signal Section] FLOW CHART NO.1 The key operation is not functioning. Replace the Function CBA Unit. Replace the Digital Main CBA Unit. FLOW CHART NO.2 No operation is possible from the remote control unit. (Operation is possible from the unit.) Check AL+3.3V line and repair it if defective.
  • Page 28 [Audio Signal Section] FLOW CHART NO.1 Audio is not output normally. See FLOW CHART NO.6 <AMP+13V is not output. [Power Supply Section]> See FLOW CHART NO.7 <AL+3.3V is not output. [Power Supply Section]> Replace the Digital Main CBA Unit. PL14.24ATR...

  • Page 29: Block Diagrams

    BLOCK DIAGRAMS 1. System Control Block Diagram PL14.24BLS...
  • Page 30 2. Video/Audio Block Diagram PL14.24BLVA...
  • Page 31 3. Digital Signal Process Block Diagram PL14.24BLD...
  • Page 32 4. LED Backlight Drive Block Diagram PL14.24BLBD...
  • Page 33 5. Power Supply Block Diagram PL14.24BLP...

  • Page 34: Schematic Diagrams / Cba And Test Points

    SCHEMATIC DIAGRAMS / CBA AND TEST POINTS Standard Notes WARNING Many electrical and mechanical parts in this chassis have special characteristics. These characteristics often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc.
  • Page 35 LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE_A,_V FUSE. ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE_A,_V. 2.
  • Page 36 Power Supply 1 Schematic Diagram NOTE: CAUTION ! The voltage for parts in hot circuit is measured using CAUTION ! : For continued protection against risk of fire, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. hot GND as a common terminal.
  • Page 37 Power Supply 2 Schematic Diagram TO LCD PANEL CN1301 ASSEMBLY 70.9 1 VLED3 2 ILED3 L1301 L1101 C1303 C1302 C1301 C1103 C1102 C1101 100uH 100uH 100/63V 1/100V 1/100V 100/63V 1/100V 1/100V D1301 D1101 GP001 SB2150BD SB2150BD OPEN D1301A L1302 D1302 D1101A L1102 D1102...
  • Page 38 Digital Main 1 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3101. IC3101 is divided into seven and shown as IC3101 (1/7) ~ IC3101 (7/7) in this Digital Main Schematic Diagram Section. CONTINUE (NO CONNECTION) CN3905...
  • Page 39 Digital Main 2 Schematic Diagram CONTINUE DIGITAL 7 P-ON+21V R3942 P-ON+3.3V OPEN CONTINUE R3952 D3905 DIGITAL 1 Q3905 OPEN OPEN OPEN LCD+12V/+21V C3996 OPEN D3906 OPEN IC3901 MP1472GJC452Z R3899 R3550 OPEN 6.8K (+12V REG.) C3946 0.047 R3897 C3949 OPEN R3891 TO LCD PANEL OPEN C3951...
  • Page 40 Digital Main 3 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3101. IC3101 is divided into seven and shown as IC3101 (1/7) ~ IC3101 (7/7) in this Digital Main Schematic Diagram Section. IC3101(2/7) MN2WS0270HA DIGITAL MAIN CBA UNIT...
  • Page 41 Digital Main 4 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3101. IC3101 is divided into seven and shown as IC3101 (1/7) ~ IC3101 (7/7) in this Digital Main Schematic Diagram Section. IC3101(3/7) MN2WS0270HA DIGITAL SIGNAL PROCESS...
  • Page 42 Digital Main 5 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3101. IC3101 is divided into seven and shown as IC3101 (1/7) ~ IC3101 (7/7) in this Digital Main Schematic Diagram Section. CONTINUE DIGITAL 7 TU3001...
  • Page 43 Digital Main 6 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3101. IC3101 is divided into seven and shown as IC3101 (1/7) ~ IC3101 (7/7) in this Digital Main Schematic Diagram Section. DIGITAL MAIN CBA UNIT IC3101(5/7) MN2WS0270HA...
  • Page 44 Digital Main 7 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3101. IC3101 is divided into seven and shown as IC3101 (1/7) ~ IC3101 (7/7) in this Digital Main Schematic Diagram Section. CONTINUE DIGITAL 1 P-ON+21V...
  • Page 45 Digital Main 8 Schematic Diagram 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3101. IC3101 is divided into seven and shown as IC3101 (1/7) ~ IC3101 (7/7) in this Digital Main Schematic Diagram Section. DIGITAL MAIN CBA UNIT R3144 CONTINUE...
  • Page 46 Function Schematic Diagram FUNCTION CBA UNIT TO IR SENSOR CBA UNIT CN4051 CN4001 KEY-IN1 C4002 D4001 MM5Z5V6B D4002 OPEN R4006 R4005 R4004 R4003 R4002 R4001 2.2K 2.2K 2.7K 4.7K 8.2K SW4007 SW4006 SW4005 SW4004 SW4003 SW4002 SW4001 POWER SOURCE MENU CH UP DOWN DOWN...
  • Page 47 IR Sensor Schematic Diagram C4054 R4060 R4053 RS4051 OPEN RS-272 (REMOTE SENSOR) D4051 SMLE12WBC7W1HR POWER R4051 R4052 6.8K TO DIGITAL MAIN R4054 CN4052 CBA UNIT CN3105 1 AL+3.3V 2 P-ON+5V 3 LIGHT C4051 C4056 C4052 1000P 4 LED1 5 REMOTE C4053 C4055 R4055...
  • Page 48 Power Supply CBA Top View CAUTION ! Because a hot chassis ground is present in the power supply Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. circuit, an isolation transformer must be used when repairing. CAUTION ! : For continued protection against risk of fire, If Main Fuse (F602) is blown , check to see that all components in the power supply...
  • Page 49 Power Supply CBA Bottom View CAUTION ! Because a hot chassis ground is present in the power supply Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. circuit, an isolation transformer must be used when repairing. CAUTION ! : For continued protection against risk of fire, If Main Fuse (F602) is blown , check to see that all components in the power supply...

  • Page 50: Wiring Diagram

    WIRING DIAGRAM 11-1 PL14.24WI...

  • Page 51: Exploded Views

    EXPLODED VIEWS CL3013 LCD1 Digital Main CBA Unit CL501 A3-1 CL3101 CL4051 Function CBA Unit AC601 SP3801 CL3801 IR Sensor CBA Unit Power Supply CBA SP3802 A3-2 SNA1 SSK1 See Electrical Parts List for parts with this mark. SBA1 SSK1 12-1 PL14.24-A_CEX...
  • Page 52 Packing SSK1 SNA1 Tape Fixlon Tape Packing Tape SBA1 Packing Tape Some Ref. Numbers are not in sequence. 12-2 PL14.24-A_PEX...

  • Page 53: Parts List

    PARTS LIST [50PFL4909/F7 (Serial No.: DS1)] Mechanical Parts PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. # have special characteristics important to safety. SERIAL NO. LABEL A4GF1UT ---------- Before replacing any of these components, read PROTECTION CARTON A4GU5UH...

  • Page 54: Electrical Parts

    Electrical Parts PRODUCT SAFETY NOTE: Products marked with a POWER SUPPLY CBA # have special characteristics important to safety. Ref. No. Description Part No. Before replacing any of these components, read POWER SUPPLY CBA A4D1BMPW-001 carefully the product safety notice in this service Consists fo the following manual.
  • Page 55 Ref. No. Description Part No. Ref. No. Description Part No. C1206 CHIP CERAMIC CAP .(1608) B K 0.22µF/25V CHD1EK30B224 D606 RECTIFIER DIODE 1N4005 NDWZ001N4005 C1207 CHIP CERAMIC CAP .(1608) B K 0.047µF/25V CHD1EK30B473 D607 DIODE 1N5406BH NDL1001N5406 C1208 CHIP CERAMIC CAP . B K 560pF/50V CHD1JK30B561 D609A DIODE SCHOTTKY SMD CES520.L3F(D...
  • Page 56 Ref. No. Description Part No. Ref. No. Description Part No. IC1702# O-E DEVICE PHOTO COUPLER QPEL0TLP785F R633 RES CHIP 1608 1/10W J 1.2k RRXA122HH013 TLP785F(D4FNBLLF(C R634 RES CHIP 1608 1/10W J 270 RRXA271HH013 COILS R635 RES CHIP 1608 1/10W J 1.2k RRXA122HH013 L601# LINE FILTER JLB24137...
  • Page 57 Ref. No. Description Part No. Ref. No. Description Part No. R1126 RES CHIP 1608 1/10W F 240k RTW2403HH008 R1601 RES CHIP 3216 1/4W F 750k RTC7503YF004 R1127 RES CHIP 1608 1/10W F 20.0k RTW2002HH008 R1602 RES CHIP 3216 1/4W F 750k RTC7503YF004 R1128 RES CHIP 1608 1/10W J 1.0k...
  • Page 58 Ref. No. Description Part No. T1701# TRANS POWER BCK-35DH LTT3PCMEK031 2014/02/27 13-6 A4DU2EL.fm...

  • Page 59: Revision History

    REVISION HISTORY Chassis PL14.24 • 2014/03/06 50PFL4909/F7 (Serial No.: DS1) First draft added 14-1 PL14.24REV...
  • Page 60 COMPARISON LIST OF MODEL NAMES Chassis PL14.24 50PFL4909/F7 (DS1) A4DU2UH PL14.24COM...

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