NAD-L70-avr-tb4 维修电路原理图.pdf

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1、Page 1 of 2 Technical Bulletin L70 Product: DVD Receiver Hardware Technical Bulletin: H2004-03 Date: May 25, 2004 Subject: SCART RGB OUTPUT Note: Change implemented in production from serial # A3YL7008001. Previous service bulletins required: YES NO DESCRIPTION: You may have the complaint that the S

2、cart RGB output is not switching automatically. REASON: The drive current required for some TV sets is greater then the L70 can supply to switch the RGB output. SOLUTION: Delete RE31 100 ohm resistor on the video board. Add a 10 ohm resistor between pin 16 of SCART connector (one leg of RE31) and +5

3、v rail (one leg of R554) on video board. See Figure 1 and Figure 2. Figure1 RadioFans.CN 收音机爱 好者资料库Page 2 of 2 Technical Bulletin L70 Product: DVD Receiver Hardware Technical Bulletin: H2004-03 Figure 2 Contact: NAD Electronics International 633 Granite Court Pickering, ON Canada L1K 3K1 Voice: 905-831-0799 FAX 905-837-6357 RadioFans.CN 收音机爱 好者资料库