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23rd February 2004, 08:09 AM
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#1 |
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diyAudio Member
Join Date: Nov 2002
Location: Grenoble, FR
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What does this symbol mean, in a Philips CD player service manual?
Is it a special resistor?
Most of the resistors between an IC's power supply pin and the supply rails are drawn this way. With the "!" and the 2 parallel bars. Any idea? |
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23rd February 2004, 08:20 AM
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#2 |
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diyAudio Member
Join Date: Sep 2003
Location: Midland, Michigan
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What does this symbol mean, in a Philips CD player service manual?
The symbol generally means that the resistor is flameproof.
__________________
Frank |
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23rd February 2004, 08:47 AM
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#4 |
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diyAudio Member
Join Date: Sep 2003
Location: Midland, Michigan
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No. Look for resister #3205. It might be one of the blue ones.
__________________
Frank |
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23rd February 2004, 08:59 AM
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#5 |
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diyAudio Moderator
Join Date: Jan 2003
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From Philips:
"Safety regulations demand that the set be restored to its original condition and that components identical to the original types be used. Safety components are marked by the symbol  ."Many other components are often marked with that symbol, like diodes, optocouplers, trafo's, coils... and not only safety resistors. /Hugo 
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23rd February 2004, 09:01 AM
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#6 | |
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diyAudio Member
Join Date: Nov 2002
Location: Grenoble, FR
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Quote:
The blue ones are caps. The 4 grey resistors have the same symbol in the service manual. They aren't the #3205, but this one is difficult to access and to photography |
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23rd February 2004, 09:09 AM
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#7 |
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diyAudio Moderator Emeritus
Join Date: Jun 2002
Location: U.K.
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What a mouthfull
It means that to retain the standards to which the safety certification was issued, the same part must be used for replacement. It must also be fitted in the same pysical position, with the same accessories: eg sleeve, stand-offs etc, where used.
This can sometimes mean that the resistor is flameproof. |
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23rd February 2004, 09:11 AM
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#8 | |
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diyAudio Member
Join Date: Nov 2002
Location: Grenoble, FR
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Quote:
Yes, this symbol isn't only on resistors. But I haven't found this text in my service manual Thank you! |
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23rd February 2004, 09:15 AM
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#9 |
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diyAudio Member
Join Date: May 2002
Location: Switzerland
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Philips always draws resistors in different ways on the same schematic because of diferent wattage etc. Somewhere in the manual you will find a note explaining which one means what. Have you got the whole service manual or just a part of it ?
Regards Charles |
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23rd February 2004, 09:35 AM
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#10 | |
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diyAudio Member
Join Date: Nov 2002
Location: Grenoble, FR
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Quote:
I've got the whole service manual. The resistors with a ! are 0.66W |
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