Philips LF501EM4 Service Manual

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50" LCD TV

SERVICE MANUAL

TYPE A

LF501EM4

EMERSON

50ME313V/F7

MAGNAVOX

TYPE B

50ME313V/F7

MAGNAVOX

LF501EM4

EMERSON

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Make sure to refer to the section describing your model.

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chassis FL13.16

Contents

(Serial No.: DS1)

(Serial No.: DS2)

130327

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Summary of Contents for Philips LF501EM4

Page 1: Service Manual
50” LCD TV chassis FL13.16 SERVICE MANUAL Contents TYPE A LF501EM4 EMERSON (Serial No.: DS1) 50ME313V/F7 MAGNAVOX (Serial No.: DS1) TYPE B 50ME313V/F7 MAGNAVOX (Serial No.: DS2) LF501EM4 EMERSON (Serial No.: DS2) This service manual contains information of different types of models.
Page 2: Important Safety Notice
IMPORTANT SAFETY NOTICE Proper service and repair is important to the safe, reliable operation of all Funai Equipment. The service procedures recommended by Funai 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 > ANT. Input ---------------------- 75 Ω Unbal., F type 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...
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 Bottom View 1.
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 1. Disassembly Flowchart Step/ Fig. Loc. Part Removal Note This flowchart indicates the disassembly steps for the cabinet parts and the CBA in order to gain access to Function items to be serviced. When reassembling, follow the CN4001 CBA Unit steps in reverse order.
Page 14 2. When you disassemble/re-assemble the Function Knob are securely in place when re- Function CBA Unit or the IR Sensor CBA Unit assembling. • Be careful not to break the hooks. If you pull with too • The IR Sensor CBA Unit and Sensor Plate are fixed much force, the hooks may be damaged.
Page 15 [5] Digital Main CBA Unit (S-6) Jack Holder (S-5) (S-6) (S-5) (S-5) [4] Power Supply CBA Fig. D2 FL13.16-A_DC...
Page 16 [11] LCD Panel Assembly [10] Stand Bracket [7] Bottom Cover L (S-8) (S-11) (S-7) (S-11) (S-10) [9] Function CBA Unit [6] Speaker [6] Speaker Function Knob (S-9) [8] Bottom Cover R Fig. D3 : Make sure to read all the precautions on page 4-2 when you disassemble/re-assemble the Function CBA Unit.
Page 17 Blind Label (S-12) [13] Front Cabinet (S-12) Blind Label (S-12) Blind Label (S-12) (S-12) (S-12) Sensor Lens (S-12) (S-12) Sensor Plate [12] IR Sensor CBA Unit (S-12) Fig. D4 : Make sure to read all the precautions on page 4-1 when you disassemble/re-assemble the Front Cabinet.
Page 18 TV Cable Wiring Diagram To LCD Panel Assembly To LCD Panel Power Supply CBA Assembly Digital Main CBA Unit CN3013 CN3701 CN1001 CN501 CN3602 CN3801 CN3101 CN601 To AC Cord To Speaker IR Sensor CBA Unit *1: TYPE A CN4051 CN4052 *2: TYPE B Function CBA Unit...
Page 19: 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 20: White Balance Adjustment
The White Balance Adjustment should be 6. Press [MENU] button. The internal Raster signal appears in the screen. (“Internal (Single)” appears performed when replacing the LCD Panel in the upper right of the screen as shown below.) or Digital Main CBA. 2.
Page 21: 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 22: Firmware Renewal Mode
FIRMWARE RENEWAL MODE Equipment Required a. USB storage device b. Remote Control Unit Firmware Update Procedure User Upgrade (Filename example: TVNB012_00_UF_XX91_BC.ecc or TVNB1012_00_UG_XX91_BA0.bin) Upgrade the firmware only. The setting values will not be initialized. The User Upgrade and the Firmware Upgrade (Factory Upgrade) will be done by the same file. If you want to upgrade the firmware and initialize the setting values also, add “FACT_”...
Page 23 Factory Upgrade (Firmware Upgrade/Flash Upgrade) Firmware Upgrade (Filename example: FACT_TVNB012_00_UF_XX91_BC.ecc or FACT_TVNB1012_00_UG_XX91_BA0.bin) Upgrade the firmware and initialize the setting values. The User Upgrade and the Firmware Upgrade (Factory Upgrade) will be done by the same file. If you want to upgrade the firmware and initialize the setting values also, add “FACT_”...
Page 24: 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, D613, D617, D618, D621, D623, D664, IC601, IC604, Q601, Is the P-ON+21V line voltage normal?
Page 25 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 [TYPE A] AL+3.3V is not output.
Page 26 [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 27 [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. FL13.16ATR...
Page 28: Block Diagrams [Type A]
BLOCK DIAGRAMS [TYPE A] 1. System Control Block Diagram FL13.16ABLS...
Page 29 2. Video/Audio Block Diagram FL13.16ABLVA...
Page 30 3. Digital Signal Process Block Diagram FL13.16ABLD...
Page 31 4. LED Backlight Drive Block Diagram FL13.16BLBD...
Page 32 5. Power Supply Block Diagram FL13.16ABLP...
Page 33: Type B]
[TYPE B] 1. System Control Block Diagram FL13.16BBLS...
Page 34 2. Video/Audio Block Diagram FL13.16BBLVA...
Page 35 3. Digital Signal Process Block Diagram FL13.16BBLD...
Page 36 4. LED Backlight Drive Block Diagram FL13.16BLBD...
Page 37 5. Power Supply Block Diagram FL13.16BBLP 9-10...
Page 38: 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 39 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 40 Power Supply 1 Schematic Diagram CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. NOTE: CAUTION ! : For continued protection against risk of fire, If Main Fuse (F602) is blown , check to see that all components in the power supply The voltage for parts in hot circuit is measured using replace only with same type 2.5A, 250V fuse.
Page 41 Power Supply 2 Schematic Diagram L1203 BEAD L1201 L1101 C1201 C1202 C1203 C1101 C1102 C1103 100uH 100uH 100/63V 1/100V 1/100V 100/63V 1/100V 1/100V D1202 D1102 SB2150BD SB2150BD BC1201 BC1202 BC1101 BC1102 D1205 L1202 D1105 L1102 C1207 C1208 C1209 C1205 BEAD WIRE D1203 C1107...
Page 42 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 43 IR Sensor Schematic Diagram C4054 R4060 R4053 RS4051 8.2K OPEN RS-272 (REMOTE SENSOR) D4051 LTST-C190KRKT POWER R4051 R4052 6.8K TO DIGITAL MAIN R4054 CN4052 CBA UNIT CN3101 1 AL+3.3V 2 P-ON+5V 3 LIGHT C4051 C4056 C4052 1000P 4 LED1 5 REMOTE C4053 C4055 R4055...
Page 44 Digital Main 1 Schematic Diagram [TYPE A] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into six and shown as IC3005 (1/6) ~ IC3005 (6/6) in this Digital Main Schematic Diagram Section. CONTINUE DIGITAL 4 P-ON+21V...
Page 45 Digital Main 2 Schematic Diagram [TYPE A] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into six and shown as IC3005 (1/6) ~ IC3005 (6/6) in this Digital Main Schematic Diagram Section. DIGITAL MAIN CBA UNIT TU3901 (TUNER UNIT) IC3013...
Page 46 Digital Main 3 Schematic Diagram [TYPE A] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into six and shown as IC3005 (1/6) ~ IC3005 (6/6) in this Digital Main Schematic Diagram Section. C3009 R3082 IC3005(3/6)
Page 47 Digital Main 4 Schematic Diagram [TYPE A] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into six and shown as IC3005 (1/6) ~ IC3005 (6/6) in this Digital Main Schematic Diagram Section. CONTINUE DIGITAL 3 IC3005(4/6)
Page 48 Digital Main 5 Schematic Diagram [TYPE A] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into six and shown as IC3005 (1/6) ~ IC3005 (6/6) in this Digital Main Schematic Diagram Section. CONTINUE DIGITAL 4 P-ON+3.3V...
Page 49 Digital Main 6 Schematic Diagram [TYPE A] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3005. IC3005 is divided into six and shown as IC3005 (1/6) ~ IC3005 (6/6) in this Digital Main Schematic Diagram Section. CONTINUE DIGITAL 4 HDMI-...
Page 50 Digital Main 1 Schematic Diagram [TYPE B] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3001. IC3001 is divided into five and shown as IC3001 (1/5) ~ IC3001 (5/5) in this Digital Main Schematic Diagram Section. DIGITAL MAIN CBA UNIT CONTINUE DIGITAL 5...
Page 51 Digital Main 2 Schematic Diagram [TYPE B] CONTINUE DIGITAL MAIN CBA UNIT DIGITAL 1 PANEL-VCOM-PWM CELL-PWR-CTRL R3039 LCD+12V OPEN R3035 OPEN CN3001 (NO CONNECTION) 31 LCD+12V C3514 C3513 30 LCD+12V OPEN OPEN 29 LCD+12V R3028 28 GND OPEN R3037 OPEN 27 VCOM-PWM C3918 C3921...
Page 52 Digital Main 3 Schematic Diagram [TYPE B] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3001. IC3001 is divided into five and shown as IC3001 (1/5) ~ IC3001 (5/5) in this Digital Main Schematic Diagram Section. DIGITAL MAIN CBA UNIT IC3001(2/5) R3231...
Page 53 Digital Main 4 Schematic Diagram [TYPE B] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3001. IC3001 is divided into five and shown as IC3001 (1/5) ~ IC3001 (5/5) in this Digital Main Schematic Diagram Section. IC3001(3/5) MSD8200DS-S1 DIGITAL MAIN CBA UNIT...
Page 54 Digital Main 5 Schematic Diagram [TYPE B] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3001. IC3001 is divided into five and shown as IC3001 (1/5) ~ IC3001 (5/5) in this Digital Main Schematic Diagram Section. DIGITAL MAIN CBA UNIT CONTINUE DIGITAL 3...
Page 55 Digital Main 6 Schematic Diagram [TYPE B] 1 NOTE: The order of pins shown in this diagram is different from that of actual IC3001. IC3001 is divided into five and shown as IC3001 (1/5) ~ IC3001 (5/5) in this Digital Main Schematic Diagram Section. TU3901 (TUNER UNIT) DIGITAL MAIN CBA UNIT IC3001(5/5)
Page 56 Power Supply CBA Top View Because a hot chassis ground is present in the power supply circuit, an isolation transformer must be used when repairing. Also, in order to have the ability to increase the input slowly, CAUTION ! when troubleshooting this type of power supply circuit, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
Page 57 Power Supply CBA Bottom View Because a hot chassis ground is present in the power supply circuit, an isolation transformer must be used when repairing. Also, in order to have the ability to increase the input slowly, CAUTION ! when troubleshooting this type of power supply circuit, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
Page 58: Wiring Diagram [Type A]
WIRING DIAGRAM [TYPE A] 11-1 FL13.16AWI...
Page 59 [TYPE B] 11-2 FL13.16BWI...
Page 60: Exploded Views
EXPLODED VIEWS LCD1 CL3013 Digital Main CBA Unit GP001 A4-1 CL3701 CL3801 GP003 CL3101 CL4001 IR Sensor CBA Unit SP3801 Power Supply CBA AC601 SSK1 SP3802 SNA1 Function CBA Unit SBA1 A4-2 See Electrical Parts List for parts with this mark. SSK1 12-1 FL13.16-A_CEX...
Page 61 Packing Upper Side Lower Side Tape SNA1 SSK1 SBA1 Fixlon Tape Packing Tape Packing Tape S I D RFID Label [LF501EM4] I D E R E A Some Ref. Numbers are Packing Tape not in sequence. 12-2 FL13.16-A_PEX...
Page 62: Lcd Panel Assembly
TYPE A PARTS LIST [LF501EM4 (Serial No.: DS1)] Mechanical Parts PRODUCT SAFETY NOTE: Products marked with a Ref.No. Description Part No. # have special characteristics important to safety. BATTERY DRY R03(SIZE AAA ) XB00M0RKT001 Before replacing any of these components, read...
Page 63 Electrical Parts PRODUCT SAFETY NOTE: Products marked with a Ref. No. Description Part No. # have special characteristics important to safety. C651 CAP ELE 470µF/25V/M/85 CED4710V8006 Before replacing any of these components, read C652 CAP ELE 470µF/25V/M/85 CED4710V8006 carefully the product safety notice in this service C654 CAP ELE 470µF/16V/M/85 CEC4710V8006...
Page 64 Ref. No. Description Part No. Ref. No. Description Part No. C1312 CHIP CERAMIC CAP .(1608) B K 0.047µF/25V CHD1EK30B473 D661 DIODE SWITCHING HSC119 TRF -E QD1Z00HSC119 C1313 CHIP CERAMIC CAP .(1608) B K 1000pF/50V CHD1JK30B102 D662 DIODE SWITCHING HSC119 TRF -E QD1Z00HSC119 C1314 CHIP CERAMIC CAP .(1608) B K 1µF/25V...
Page 65 Ref. No. Description Part No. Ref. No. Description Part No. METAL OXIDE FILM RES. 2W J 0.22 Ω Q650 CHIP TRANSISTOR KTC3875S-Y-RTK/P NQ1YKTC3875S R676 RN02R22ZU001 METAL OXIDE FILM RES. 2W J 0.22 Ω Q653 CHIP TRANSISTOR KTC3875S-Y-RTK/P NQ1YKTC3875S R678 RN02R22ZU001 METAL OXIDE FILM RES.
Page 66 Ref. No. Description Part No. Ref. No. Description Part No. RES CHIP 1608 1/10W J 200 Ω RES CHIP 3216 1/4W J 47 Ω R1218 RRXA201HH013 R1626 RRX4470HH034 RES CHIP 1608 1/10W F 430k Ω RES CHIP 1608 1/10W J 12k Ω R1219 RTW4303HH008 R1627...
Page 67 Don't degrade the safety of the product through improper servicing. NOTE: Parts that are not assigned part numbers (---------) are not available. Different parts from the original model LF501EM4 (Serial No. : DS1) Ref. No. Description Part No. A15#...
Page 68 2. Tolerance of Capacitors and Resistors are noted with the following symbols. C..±0.25% D..±0.5% F..±1% G..±2% J..±5% K..±10% M..±20% N..±30% Z..+80/-20% Different parts from the original model LF501EM4 (Serial No. : DS1) Ref. No. Description Part No. DIGITAL MAIN CBA UNIT A3AUCMMA-001 2013/03/15 13-7 A3AUCEL.fm...
Page 69 NOTE: Parts that are not assigned part numbers (---------) are not available. Different parts from the original model LF501EM4 (Serial No. : DS1) There is no difference from the original model LF501EM4 (Serial No.: DS1) for Mechanical Parts section. 2013/02/26 13-8 A3AU0CA.fm...
Page 70 C..±0.25% D..±0.5% F..±1% G..±2% J..±5% K..±10% M..±20% N..±30% Z..+80/-20% Different parts from the original model LF501EM4 (Serial No. : DS1) Ref. No. Description Part No. DIGITAL MAIN CBA UNIT A3AU0MMA-001 MSW ASSEMBLY A3AU0MSW-001 POWER SUPPLY CBA A3AU0MPW-001 C631...
Page 71 Don't degrade the safety of the product through improper servicing. NOTE: Parts that are not assigned part numbers (---------) are not available. Different parts from the original model LF501EM4 (Serial No. : DS1) Ref. No. Description Part No. A15#...
Page 72 C..±0.25% D..±0.5% F..±1% G..±2% J..±5% K..±10% M..±20% N..±30% Z..+80/-20% Different parts from the original model LF501EM4 (Serial No. : DS1) Ref. No. Description Part No. DIGITAL MAIN CBA UNIT A3AU1MMA-001 MSW ASSEMBLY A3AU0MSW-001 POWER SUPPLY CBA A3AU0MPW-001 C631...
Page 73: Revision History
REVISION HISTORY Chassis FL13.16 • 2013/02/19 LF501EM4 (Serial No.: DS1) added • 2013/03/27 50ME313V/F7 (Serial No.: DS1) added • 2013/03/08 50ME313V/F7 (Serial No.: DS2) First Draft added • 2013/03/13 LF501EM4 (Serial No.: DS2) First Draft added 14-1 FL13.16REV...
Page 74 COMPARISON LIST OF MODEL NAMES Chassis FL13.16 LF501EM4 (DS1) A3AUEUH TYPE A (DS2) A3AU0UH TYPE B 50ME313V/F7 (DS1) A3AUCUH TYPE A (DS2) A3AU1UH TYPE B FL13.16COM...

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