Sharp HT-DV40H (serv.man8) Service Manual / Technical Bulletin ▷ View online
DVD 2009 03 01
Date of Issue: 10
th
March 2009
3
Classification: White
HOME CINEMA TECHNICAL BULLETIN
Page 1 of 2
Sharp Electronics (UK) Limited
Reference – TSI 0920001
Revision - 1
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
MODELS
HT-DV40H
SYMPTOM Sub Woofer background noise even on revised pwb used in units produced with serial
numbers between 71000002 and 71000301.
CAUSE
Earth loop problems on original main board part number QPWBFA234AWA0.
ACTION
Change the soldered position of cable end to reduce nose as per photos below.
Figure 1: The original position for the earth wire.
DVD 2009 03 01
Date of Issue: 10
th
March 2009
3
Classification: White
HOME CINEMA TECHNICAL BULLETIN
Page 2 of 2
Sharp Electronics (UK) Limited
Reference – TSI 0920001
Revision - 1
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
Figure 2:
New position for link wire by moving end L’ to M’ location.
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