DV-740 (serv.man25). Picture freezes when playing certain discs - Sharp DVD Technical Bulletin (repair manual)

Month of Issue: 

May 2002

ClassifICation:

White

Page 1 of 2

Reference VD-159

Revision 2

White – Carry out as required

Yellow – Carry out as required and whenever the unit comes in for servICe

Red – Carry out on all units

SYMPTOM   The picture sometimes pauses (freezes) when playing certain discs.

The DVD drive mechanism tolerances on some players require electronic adjustment.

In cases where the specific problem is reported, replace DVD drive firmware IC U5
(with latest version). The IC is located on the DVD servo PWB  topside and is fitted in
a square type PLCC socket.

To replace the IC follow the procedure detailed below: -

First eject the disc tray and remove the front trim then close again. Remove the power
then disconnect and remove the DVD drive mechanism. Turn the mechanism over and
remove the three connectors “CN1”,“CN2” and “J2”  (Anti-static precautions should be
observed). The PWB can now be unclipped. Turn the PWB over and replace the IC in
the socket “U5”. The correct tool must be used (PLCC Extractor) to remove the IC
otherwise the socket will suffer irreparable damage. Replace EEPROM with new part.
No adjustments are required.

U5

EEPROM

9HLVSIM6759

AS

PLCC Extractor

JIGPLCCTOOL

AH

NB
Please return the old IC to Sharp Electronics (UK) Ltd for the attention of CE Technical Dept.

Month of Issue: 

May 2002

ClassifICation:

White

Page 2 of 2

Reference VD-159

Revision 2

White – Carry out as required

Yellow – Carry out as required and whenever the unit comes in for servICe

Red – Carry out on all units

NB
Please return the old IC to Sharp Electronics (UK) Ltd for the attention of CE Technical Dept.