PN-K321 (serv.man34). Uneven image - Sharp Monitor Technical Bulletin (repair manual)

pn-k321 (serv.man34) technical bulletin
Model
PN-K321 (serv.man34)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
442.01 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
Monitor / Uneven image
File
pn-k321-sm34.pdf
Date

Read Sharp PN-K321 (serv.man34) Technical Bulletin 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: 
  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.  
 
 
 
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:  
  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. 
 
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   
 
 
 
 
 
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Download Sharp PN-K321 (serv.man34) Technical Bulletin

Here you can read online and download Sharp PN-K321 (serv.man34) Technical Bulletin in PDF. PN-K321 (serv.man34) technical bulletin will guide through the process and help you recover, restore, fix, disassemble and repair Sharp PN-K321 (serv.man34) Monitor. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.