Samsung ef117 Bullettin
SERVICE BULLETIN
ELECTRONICS
Product : 19" CRT monitor
Model : PN19MT
Bulletin No. |
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01-C/M-E0064 |
Bulletin Date |
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26-Feb-02 |
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ECN Date |
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26-Feb-02 |
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SUBJECT : Humming noise from power supply in DPMS mode
Background : The Model PN19MT has some humming noise at power supply when the monitor is in off-mode.
It is caused by the power smart IC that is switched to audio frequency(500Hz) when it enter into off-mode We are going to modify the circuit at March,
If you are requested service about this problem, please repair the monitor with below mothod.
Model name : PN19MT (S/T 96P)
Solution |
Remove the resistor R624. |
Application Date : Feb.26,2002 |
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( Interchangeability Code : |
* I.C ) |
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Location |
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OLD (before) |
Parts |
NEW (changed) |
Parts |
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* |
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No. |
SEC Code |
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Description |
SEC Code |
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Description |
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I.C |
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Type |
A type |
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B type |
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C type |
D type |
E type |
F type |
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Interchange |
OLD |
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Early |
OLD |
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Early |
OLD |
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Early |
OLD |
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Early |
Parts Addition |
Parts deletion |
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Type Code |
(Parts) |
(Prod.) |
(Parts) |
(Prod.) |
(Parts) |
(Prod.) |
(Parts) |
(Prod.) |
(None → New) |
( Old → Del. ) |
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(* I.C ) |
NEW |
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Late |
NEW |
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Late |
NEW |
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Late |
NEW |
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Late |
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Application |
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Reference ( |
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Only Defected sets ( |
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Whole sets ( |
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Attachment |
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Schematic Diagram ( |
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Component Lay-out ( |
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Exploded View ( |
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Mechanical Diagram ( |
0 ) |
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None ( ) |
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Others ( |
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Product Month : |
- Aug all |
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Serial No. (~ from) |
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Published by : C.J.Oh |
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Checked by : C. K.Park |
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Approved by : Y.K.Yoo |
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Revision (V8.1 : July 30, 1997) ... Customer Satisfaction Group |
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( Pages : 1 |
of 1 ) |
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