42WP37 2 Safety Precautions 2.1. General Guidelines 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
42WP37 3 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip"...
42WP37 4 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). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
42WP37 5 PCB Structure sheet of GP6D chassis Board Name Function Remarks Digital Signal Processor Slot Interface & SYNC processor Audio out, DC-DC converter Sustain Out Scan out Scan connection (Upper) Scan connection (Lower) Data Drive (Lower Right) Data Drive (Lower Left) Speaker terminal Power switch Sustain connection (Upper)
42WP37 8 Adjustment Procedure 8.1. Driver Set-up 8.1.1. Item / Preparation 1. Input an APL 100 % white signal. 2. Set the picture controls: - Picture mode: Normal White balance: Cool Aspect: 16:9 8.1.2. Adjustments Adjust driver section voltages referring the panel data on the panel data label.
42WP37 8.2. Initialization Pulse Adjust 1. Input a Cross hatch signal. 2. Set the picture controls: - Picture mode: Normal White balance: Cool Adjust the indicated test point for the specified wave form. Test point Volume Level TPSC1 (SC) R6557 (SC) 170 ±...
42WP37 8.3. P.C.B. (Printed Circuit Board) exchange 8.3.1. Caution 1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors. 8.3.2. Quick adjustment after P.C.B. exchange P.C.B. Name Test Point Voltage Volume Remarks P Board Vsus TPVSUS (SS) Vsus* ±...
42WP37 9 Service mode 9.1. CAT (computer Aided Test) mode To exit the CAT mode, access the ID mode and switch off the main power. 9.1.1. IIC mode Select the IIC mode by Up/Down button on the remote control at the front page of CAT mode then press the Action button on the remote control.
42WP37 9.1.2. CD mode Select the CD mode by Up/Down button on the remote control at the front page of CAT mode then press the Mute button on the remote control more than 5 sec. Micom software version (IC9705), this version can be upgrade by 1.
42WP37 10 Alignment 10.1. 625i/625p panel white balance INPUT Equipment Setting Alignment menu Procedure 1 PC (625i) Color Picture: 1) Find the nearest area to brightness of 10 cd/m as Low Gray Scale Analyzer Normal Sub Adjust light by color sensor. Pattern White balance: Sub Bright 2) Adjust Sub bright to set Low light level to 10 cd/m...
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42WP37 Equipment Setting Alignment menu Procedure PC (525i) Picture: 1) Write down each color temaparature of R,G,B drive and Normal Cut off data as follows. Aspect: 16:9 White White balance: Balance Cool Normal Warm Cool R Drive Normal G Drive B Drive Warm R Cut off...
42WP37 10.2. PC/RGB panel white balance INPUT Equipment Setting Alignment menu Procedure 1 PC (VGA) Color Picture: 1) Find the nearest area to brightness of 10 cd/m as Low Gray Scale Analyzer Normal Sub Adjust light by color sensor. Pattern White balance: Sub Bright 2) Adjust Sub bright to set Low light level to 10 cd/m Cool...
42WP37 10.3. HD panel white balance INPUT Equipment Setting Alignment menu Procedure (HD:720i or 1080i) Color Picture: 1) Find the nearest area to brightness of 10 cd/m as Low Gray Scale Analyzer Normal Sub Adjust light by color sensor. Pattern White balance: Sub Bright 2) Adjust Sub bright to set Low light level to 10 cd/m Cool...
42WP37 11 Trouble shooting guide 11.1. Self Check 11.1.1. Display Indication 1. Self-check is used to automatically check the bus line controlled circuit of the Plasma display. 2. To get into the Self-check mode, press the volume down button on the customer controls at the front of the set, at the same time pressing the OFF-TIMER button on the remote control, and the screen will show :- If the CCU ports have been checked and found to be incorrect...
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42WP37 11.2.2. Power LED no light – 21 –...
42WP37 11.3. No Picture No Picture Check D board Composit/ COMPONENT/ RGB PC signal What's signal ? all signal HY/ HZ / HT board D, J board HX board Drive circuits LED indicator SC board SS board D6583 D6769 (15V detection) D6765 –...
42WP37 11.4. Local screen failure Plasma display may have local area failure on the screen. Fig - 1 is the possible defect P.C.B. for each local area. Fig - 1 – 23 –...
Block and Schematic Diagrams 42WP37 Schematic Diagram Notes Important Safety Notice Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacture's specified parts. Notes: 1. Resistor All resistors are cabon 1/4W resistor, unless marked as follows: Unit of resistance is OHM [ Ω] (K=1,000, M=1,000,000).
42WP37 13 Replacement panel handling precautions and replacement procedure Replacement work procedure and precautions Replacement panel Model 50XP37 42WP37 *Some portions of the following description are diffrent handling precautions and from 42WP37 as this is written based on 50XP37. • Screwdrivers, pliers and other tools •...
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· · · · · Location No. of Ixxxx (IC: integrated circuit) in the SEMICONDUCTORS section indicates Icxxxx on the Schematic Diagrams. (E.g. I1001 is equalized to IC1001.) Model : 42WP37C/42WP37E/42WP37F/42WP37H Capacitors ..... CD : Ceramic Disk...
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42WP37 16 Specifications Power Source: AC220-240V 50/60Hz Power Consumption: 265 W Save off 1.8 W, Save on 0.8 W (stand-by condition) 0.6 W (Power off condition) Plasma Display panel: Drive method AC type 16:9 aspect ratio Contrast Ratio 4000:1 Screen size: 920 mm (W) ×...
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Block and Schematic Diagrams 42WP37 Schematic Diagram Notes Important Safety Notice Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacture's specified parts. Notes: 1. Resistor All resistors are cabon 1/4W resistor, unless marked as follows: Unit of resistance is OHM [ Ω] (K=1,000, M=1,000,000).
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42WP37 Main Block Diagram SC23 3.3V DC/DC 2.5V UR12V CONVERTER 1.8V DISCHARGE SS48 STB7V SC20 CONTROL VSUS SS11 VSUS CONTROL ON/OFF PROCESS STB5V ADDRESS VOLTAGE MAIN MPU SUSTAIN VOLTAGE RECTIFIER VOLTAGE (VE) SDRAM RECTIFIER SUB MPU SUSTAIN FORMAT PLASMA AI PROCESS SUSTAIN PULSE...
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42WP37 PF-Board Block Diagram Line Filter/F.STB Board TO P9 AC INLET L901-L902 F900 NEUTRAL LINE FILTER F901 LINE PF10 TO J10 RL901 AC LINE CODE STB+5V F902 F.STB ON/OFF RELAY F.STB ON/OFF Q903 F.STB ON/OFF F.STB+14V COLD D902 L905 F.STB+14V LINE T901 FILTER...
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42WP37 PF-Board Schematic Diagram P-BOARD (P9) PF-BOARD TXNPF10QBS COLD COLD C902 C903 Not specified DC Not specified DC 220p 220p AC CORD C901 C906 C912 Not specified DC Not specified DC Not specified DC T8AH 250V J-BOARD 0.22u RL901 K6B2ADA00007 PF10 (J10) F900...
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42WP37 P-Board Block Diagram L451 L451 380V TO SS11 TO SS11 IC551 VSUS VSUS Q451 Q452 IC451 SUSTAIN VOLTAGE CONTROL VSUS VSUS Q454 Q453 T501 TO SC2 TO SC2 DRV.REG 190V 190V Drain Drain =8.3V VSUS VSUS VSUS VSUS START O.V.P DRIVER D451...
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42WP37 C1, C2 and V1-Board Block Diagram SUSTAIN TO D32 TO D31 CLKR CLKL Data drive (Lower Right) Data drive (Lower Left) Remocon Senser , D1550 Board (Front View) Board (Front View) Power Switch Board POWER ON Q7201 LED G STAND BY Q7202 LED R...
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42WP37 Z and H3-Board Block Diagram Sound Processor Board IC2302 IC2401 AUDIO AMP SOUND PROCESSOR TO J8 JK8500 SPEAKER L IN L OUT Q2408 Q2302 AUDIO TERMINAL L AMP L AMP OUT(L) AMP STB SW IC2301 AUDIO AMP JK8500 SPEAKER R IN R OUT Q2410...