TH-50LFE6W 1 Safety Precautions 1.1. General Guidelines 1. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials. 2. When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the wires have been broken or disconnected, do not attempt to repair or re-wire the units.
TH-50LFE6W 2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip”...
TH-50LFE6W 2.2. About lead free solder (PbF) Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).
TH-50LFE6W 3 Service Navigation 3.1. Service Hint Board Name Function P-Board Power supply Non serviceable. P-Board should be exchanged for service. A-Board Digital core signal processor Non serviceable. A-Board should be exchanged for service. FR-Board Double speed processor Non serviceable.
TH-50LFE6W 4 Specifications Power Source 220-240 V AC, 50/60Hz Power Consumption Rated Power Consumption 90 W Stand-by condition 0.5 W Power off condition 0.5 W Sound 22 mm × 90 mm × 2 pcs Speakers Audio Output 10 W [5 W + 5 W] (10 % THD)
TH-50LFE6W 5 Service Mode 5.1. CAT (Computer Aided Test) mode How to access the CAT mode. Method A Main unit + remote control operation Press and hold the button on the right side of the unit and press the RECALL button on the remote control 3 times quickly within 2 second, this will place the unit into the CAT mode.
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TH-50LFE6W 5.1.2. CD mode Select the CD mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on the remote control more than 3 seconds. Memory data change To exit the CD mode, press the R button on the remote control.
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TH-50LFE6W 5.1.3. SD mode Select the SD mode by Up/Down button on the remote control at the front page of CAT mode and then press the Action button on the remote control. To exit the SD mode, press the R button on the remote control.
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TH-50LFE6W 5.1.5. NW mode Note : To use the network function, set each "Network Setup" setting and make sure to set the "Control I/F Select" to "LAN". Select the NW mode by Up/Down button on the remote control at the front page of CAT mode and then press the Action button on the remote control.
TH-50LFE6W 6 Troubleshooting Guide 6.1. Self Check 6.1.1. Display Indication 1. Self-check is used to automatically check the bus line controlled circuit of the LCD display. 2. To get into the Self-check mode, press the volume down button on the right side of the unit, at the same time pressing the OFF-TIMER button on the remote control, and the screen will show.
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TH-50LFE6W 6.1.3. LCD Panel test mode The failure-diagnosis by LCD Panel test mode To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displayed. [How to display the test pattern] (1) Main unit + remote control operation 1.
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TH-50LFE6W [Diagnostic flow chart] It displays. Is a test pattern Failure of A-Board displayed normally? It is still abnormal. If "FRAME CREATION" of It is abnormal. It disappears. Is a part abnormal "PICTURE" in On-Screen Failure of FR-Board even in a test pattern? Menu is set to "OFF", does...
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TH-50LFE6W [Reference: FRAME CREATION] FRAME CREATION is the function to double the number of display segments of an image and to show a fast moving scene more finely. FRAME CREATION :Please select "OFF", when an image is unnatural. MIDDLE "FRAME CREATION" setting is a setting of intermediate frame generation when carrying out double-speed processing (from 60 to 120 frames).
TH-50LFE6W 6.2. No Power First check point There are following 3 states of No Power indication by power LED. 1. No lit. 2. Green is lit then turns red blinking a few seconds later. 3. Only red is lit. 6.3.
TH-50LFE6W 7 Disassembly and Assembly Instructions 7.1. PCB Layout 7.2. Preparation 7.3. About disassembly replacement Please pull soft cloth etc. not to damage a screen and please turn the front of a main part down and lay it down Cautions when replacing each component •...
TH-50LFE6W 7.4. Back Cover removal 7.5. A-Board replacement 1. Remove the screws, and then remove the Back Cover. 1. Disconnect the connectors and remove the screws. Cautions when replacing the Back Cover • When replacing the Back Cover, please be sure to stick 2.
TH-50LFE6W Caution when replacing the A-Board Caution after replacing the A-Board • Gaskets are enclosed in the A-Board for repaire. Please • Since the electronic switch is adopted as a power switch stick the gaskets on the position of the following figure of main unit, how the rise of the power of the initial state when replacing the A-Board.
TH-50LFE6W 7.8. GK-Board Button Caution when replacing the P-Board • Felt is enclosed in the P-Board for repaire. Please stick Bracket replacement the felt on the original position when replacing the P- Board. 1. Disconnect the connector and remove the screw, and then remove the GK-Board and Key Button Bracket.
TH-50LFE6W 7.9. Speaker Unit L/R replacement 7.11. Rear Panel BTM Assy replace- ment 1. Disconnect the speaker terminal, and then remove the Speaker Unit L/R. 1. Remove the Speaker Unit L/R. (Refer to “7.9. Speaker Unit L/R replacement”) 2. Remove the LED Panel Case.
TH-50LFE6W 7.13. Rear Panel Metal Caution when reolacing the Rear Panel L/R Assy • Felt is enclosed in the Rear Panel L Assy and Rear replacement Panel R Assy for repaire. Please stick the felt on the position of the following figure when replacing the Rear 1.
TH-50LFE6W 7.15. Rear Panel Metal Top/L/R 6. Remove the screws, and then remove the Metal Bracket Bottom. replacement 1. Remove the Speaker Unit L/R. (Refer to “7.9. Speaker Unit L/R replacement”) 2. Remove the LED Panel Case. (Refer to “7.10. K-Board, LED Panel and LED Panel Case replacement”)
TH-50LFE6W Caution when attaching the Rear Panel Metal Top/L/R 11. Remove the Rear Panel Metal Top/L/R. • Please check that the hooks (positioning) of metals are (Refer to “7.15. Rear Panel Metal Top/L/R replacement”) inserted firmly when assembling. 12. Remove the screws, and then remove the FR PCB Fixing Metal.
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TH-50LFE6W Caution when replacing the LCD Panel • Please stick the Model Name Sheet on the position of the following figure when replacing the LCD Panel. About the wire arrangement after replacing the LCD Panel • Please refer to the “Wiring Connection Diagram”.
TH-50LFE6W 7.17. Caution about the sticking parts of LCD Panel • Please remove the Barrier P PCB and GK Barrier Sheet from the old LCD Panel and stick it on the new LCD Panel for repair.
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TH-50LFE6W • Please stick the tapes according to the sticking position of the LCD Panel for repair after connecting the LVDS FFC. * Attachment specifications are subject to change without notice and parts may remain. * Please stick on the same place as before.
TH-50LFE6W 8.2. Main Block Diagram DIGITAL CORE SIGNAL PROCESSOR SOUND15V MAIN CPU SERIAL AUDIO SIGNAL SPEAKER(R) AUDIO SPEAKER(L) LAN DATA SOS DET CONTROL D3.3V +3.3V LAN TERMINAL D1.2V +1.2V MII DATA R+/- LINE AMP L+/- LINE OUT NETWORK AUDIO LAN3.3V...
TH-50LFE6W 8.3. Block (1 of 3) Diagram JK3505 JK3503 JK4002 JK4004 PC/DVI RS232C_IN AUDIO IN DVI-D IN HDMI IN1 DIGITAL SIGNAL PROCESSOR (SEIRIAL IN) NETWORK IC2701 IC2704 CONTROLER Q2706 RXD_LAN LAN CONTROL JK2701 TXD1 UART TXD_LAN DATA RXD1 LAN TERMINAL...