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Now downloading free:JBL DSC-400 bad picture quality in RGB SB JBL2002-002

JBL DSC-400 bad picture quality in RGB SB JBL2002-002 free download

Audio equipment,digital audio, home audio, professional audio systems service manuals and repair information

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File name:DSC-400 bad picture quality in RGB SB JBL2002-002.pdf
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Descr: JBL Audio DSC-400 DSC-400 bad picture quality in RGB SB JBL2002-002.pdf
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File name DSC-400 bad picture quality in RGB SB JBL2002-002.pdf

Service Bulletin Service bulletin # JBL2002-002 February 2002 To: all JBL Service Centers Models: DSC 400 ( DSC100 ) Subject: Bad picture quality In RGB In the event, you receive a DSC400 ( DSC100 ) with the complaint: In RGB mode, the picture has poor resolution or there are pixels in the picture, do following modification. Part needed: One resistor 75 (or two 150 in parallel) One Transistor BC 548, part no. 3614-5925 The modification is only on the video board. 1. Remove the top cover of the DSC 100 2. Release the Video board (4 screws) and place the board with the solder side up. 3. Remove the SMD resistor R1178 (on the PCB , R1176, the 8 digit number is half covered by a solder point) 4. Use the two solder points from the resistor to place the transistors emitter and base, see the picture below for placing the collector. On the schematics, Base on output from IC109 pin 20, collector on 3.3V supply (see on diode D103), Emitter on CN108 pin 8. E B C 3.3 V 5. Add a 75 resistor from CN 108 pin 8 to ground. 6. Assemble the unit again and test the RGB mode Ground CN108 pin 8 Harman International SNC - Harman Consumer International 2, route de Tours 72500 Ch

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