User manual AUDIO TELEX AT250B

[. . . ] c o vl lvl tJ N I c AT I o N s AMilDilril@ ft{l-ill PrY LrD i;iffii :*ii:f :l!l;f :;: ;: ; : ;:;:;: ; : ; ::::;::: : :::: :: :;: ; :; tl"t:, it:, |, |3, . :. :. :. :. :;. :. : (hdtn:: . : :. :. : ::i::iiiQ6lpq1y;, :. : :. :. : :. :. :. aFcl. t n :. :. :. :. : :. : :grctsa ::::ffirlEd:, : : Aud io Telex*C*omfl5n:S"?fjons Pty Ltd AT250B Power Amplifier Product Description The AT250B is a 250 watt po\rer amplifier with outputs fu 4 olrns, 70 and 100 volt line. [. . . ] Dring ncmal qleratim, the LED will flicker oocasiurally, however if the LED flickas fm lemglhy prids m stays cmtinuorsly glolying; this is an indicatiqr that the amplifier is being overdriven by the incming program sipal. If this input ovenload cmditim is cmbined with the maximum load m the output of the amplifier then the amplifier will autmatically shut itself dffi'n fc a period of approximately 3 secmds and then turn itself back on agein and continue to cycle in this frstricr until the abnormal cmdition is removod. This is a feature of the amplifier and is desigred to prdect the internal circuity of the amplifier and also to prdes{ aoy speakers that may be cmnected to the ortput of the amplifier. 3. Power Button: This switch cqrtols the switching of AC power to the anplifier. Roc{ring this switch upwards turns on AC power to the amplifier while rocking the switdr downwards tums pourcr of to the a. mplifier. When in the upward position, the red nem in the body of the switch will glow. Rear Panel Connections Fffitd . ' tltttt 'cor ro !d' -Lm- il[00[0il0[ffi0[il00ilil[[0 @O 1", . . ^. t AUDIO TELEX COMUNICATIONS PTY LTD SYDNEY AUSTRALIA l. 3 Pin IEC Power The operating voltage is 240 VAC @ 5OIIzor ll0 VAC @ ffiIlz. The AC power voltage level is nd externally user adjustable hS is factory pre-set. The inlet is equippd with an inbuilt AC fus holder fitted with a 6 amp fuse plus a spare fouod lrithin the holder. Pbasc ensune that the meins powcr cord is disconnectcd bcforc attempting to check or rcphce thls frsc. talns lnlet g DireCt OUtpUt Terminal Stfip: frm left to right the terminals area These screw terminals allow access to the diroct outputs of the amplifier. [. . . ] Pin 3 = Active Negative (-). Fuse Sizes tains 240 VAC: 6Amperes SlorvBlow DC: Z x I Amperes SlowBlorv Notes I all cases the There are no user adjusable controls inside the amplifio so the cover shotrld srly be removed by qualified service persurnel. mains power lead should be discqrnected befoe the cover is removed. [. . . ]