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manual de usuario perfecto y completo de buena calidad de impresion y muy detallado ideal !
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It`s full copy of a service manual from url http://www.philips.owner-manuals.com/PM3216-service-manual-PHILIPS.html
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perfect! you just sent to me the copy in Italian witout even my specification!!!! so you are really smart cooperative and efficient. To my opinion the best place all over to get a manual of electronics!!!!
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Well Well Well!!!! Good manual perfect for my hobby!!! As Before you have done a very well done work!!!! Thank you
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Super nice! Good to have a manual in digital format.
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BV-60H/120H All-Tube Professional Series Guitar Amplifiers
A Word About Tubes:
Vacuum tubes can only last so long. Allowing your amp to cool down before moving it will help prolong the life of the tubes. Even so, after about a year (or sooner if you're on tour or jammin' more frequently than most) you may notice the output of your amp just isn't as "alive" as it used to be. If the sound from your amplifier starts to grow weak, lacks punch, fades up and down, loses highs and lows, gets "funny" (clanking sounds, etc.), it's very likely that the power tubes are worn out and need replacing. Since power tubes work together in an amplifier, it is important that they all be replaced at the same time with a matched set of tubes. If the amp starts to squeal, gets noisy, loses gain or starts to hum, the preamp tubes may be bad. Insist upon using only the highest quality, low-microphonic tubes! NOTE: Tube replacement should always be done by a qualified service technician, since adjustment of the internal biasing controls will be necessary after the new tubes are installed. Also, removal of the tubes may expose extremely hazardous voltage levels, which could cause injury or death.
To help prolong the life of your tube amplifier, and to keep it in top performing condition, please observe the following guidelines: � Always match the impedance of your speaker cabinet(s) to the amplifier�s impedance selector switch setting. � In cold weather, allow the amplifier to warm up to room temperature before turning it on (to prevent cracking the tubes). � Allow the amplifier a moment to cool down after playing it before you move it. � Protect the amplifier from exposure to dust and moisture. If liquid gets spilled into the amplifier, or if it gets dropped or excessively jarred, have it checked out at a service center before using it.
System Block Diagram:
INPUT TUBE STAGE LOW MID HIGH VOLUME TUBE STAGE CHANNEL SWITCHING
GAIN
TUBE STAGE
TUBE STAGE
TUBE STAGE
TUBE STAGE LOW MID HIGH MASTER
PAD SWITCHING
SEND
RETURN POWER AMP IMPEDANCE SELECTOR SPEAKER OUTS PRESENCE FREQUENCY COMPENSATOR LINE OUT
REVERB 1
EFFECTS LOOP
EFFECTS SWITCHING
REVERB 2
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