CTV2002 05 02
Month of Issue:
TELEVISION TECHNICAL BULLETIN
Page 1 of 3
Sharp Electronics (UK) Limited
White – Carry out as required
Yellow – Carry out as required and whenever the unit comes in for service
Red – Carry out on all units
Change of the opto coupler from a six-pin type to a four-pin type.
Replace the following parts noting the different pin outs of the new opto coupler.
OLD PART NUMBER
NEW PART NUMBER
When replacing the original six-pin opto coupler with a four-pin type, it is important that the following
resistors are changed:
If IC705 is being replaced, change R724 and R750
If IC703 is being replaced, change R711
If IC704 is being replaced, change R1017
If IC1703 (on the Dolby Pro-Logic PWB) is being replaced, there are no resistors to change
Only change the resistors associated with the opto coupler being replaced.
The required parts have been prepared into a kit and can be ordered using the following part
number. This kit only contains one opto coupler and all the resistors.