Sharp PN-K321 (serv.man34) Service Manual / Technical Bulletin ▷ View online
IDP 2014 04 01
Date of Issue:
14
th
April 2014
Classification:
Yellow
IDP TECHNICAL BULLETIN
Page 1 of 2
Sharp Electronics (UK) Limited
Reference
– PNF-A252
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
PNK321
REASON
Uneven image, flickering picture or image retention. Cannot be resolved by turning the
power on / off. The power-off procedure on LC control PWB is insufficient that the
symptoms may appear if the DC Voltage remains in LC at the time of power-off.
This is caused due to an incorrect power-off sequence:
power on / off. The power-off procedure on LC control PWB is insufficient that the
symptoms may appear if the DC Voltage remains in LC at the time of power-off.
This is caused due to an incorrect power-off sequence:
The symptom will appear if the power switch on back side is turned off or the
power is shut down by pulling the plug while displaying bright image on screen.
ACTION
We have modified the design circuit for the power-off procedure from July 2013
production.
If you receive a product under warranty for repair exhibiting these symptoms that was
produced before July 2103, exchange the product for the customer and contact CE
Technical Support with the serial number and photograph of the fault. We will then
liaise with you on how to proceed.
production.
If you receive a product under warranty for repair exhibiting these symptoms that was
produced before July 2103, exchange the product for the customer and contact CE
Technical Support with the serial number and photograph of the fault. We will then
liaise with you on how to proceed.
Refer to the marking information on the second page to identify product.
Confirmation of the production date
Using the information provided below, you can identify the production date using the
serial number:
Using the information provided below, you can identify the production date using the
serial number:
The first digit is the year. The last digit is the month.
Note - The last digit goes from 0-9, X=October, Y=November and
Z=December.
Z=December.
IDP 2014 04 01
Date of Issue:
14
th
April 2014
Classification:
Yellow
IDP TECHNICAL BULLETIN
Page 2 of 2
Sharp Electronics (UK) Limited
Reference
– PNF-A252
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
Display