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Extracted text from Nad C 542 Technical Bulletin (Ocr-read)
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Technical Bulletin C542
Product: DVD Player
Hardware Technical Bulletin: C542-H2005-03
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Technical Bulletin C542
Product: CD Player
Hardware Technical Bulletin: C542-H2005-04
Date: June 27/05
Subject: Improved Playability
Note: Implemented in production starting from serial #: G56C54224800
Previous T.B.s required:
q
qq
q
YES
q
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q NO
DESCRIPTION: You may have the complaint that some d iscs are difficult to play .
REASON: The rf eyepattern level can be slightly lower than expected when reading some
cds.
SOLUTION: Increase rf level from laser pick up. Cha nge the following parts to increase the
rf level.
1. Change resistor R227 from 100R to a jumper wire.
2. Change resistor R103 from 20K to 15K.
3. Change resistor R218 from 15K to 47K.
4. Change capacitor C221 from 0.1uF to 3900 pF.
Contact:
NAD Electronics International
633 Granite Court
Pickering, ON Canada L1K 3K1
Voice: 905-831-0799 FAX 905-837-6357
www.nadelectronics.com
