Power On, Controls And Indicators - Acom 1500 Manual

recommended. The auxiliary fan (92x92x25mm or 92x92x38mm) must be a brushless type,
2...5W/24VDC. It may be installed by your dealer or by the manufacturer on request.

3. POWER ON, CONTROLS AND INDICATORS

Do not turn the amplifier on for at least 2 hours after unpacking it in the room
where it will be used. Pay particular attention when you move it from a very cold
into a warm place - condensation is likely and this could result in damage to the
high voltage circuits. In such a case, wait at least 4 hours. A similar effect can
occur after a rapid warming of the operating room (for instance after switching
on a powerful heater in a cold shack).
To avoid damage (not covered under warranty) carefully check that the voltage
for which the amplifier is set corresponds to your mains nominal voltage (see S.2-
2 and table 2-1).
After following all instructions in S.2, you may turn ON the main power switch marked "LINE" on the
rear panel (Fig.2-1). The LED indicator above the red ON/OFF button located on the front panel must
light red and an inscription "ACOM1500" will appear on the display (Fig.3-1):
Note that the upper line of the VFD always reads the peak forward power, even in STBY mode. The
1500W scale resolution is 15W per bar. Note too that levels below 20W may be not detected.
If the characters on the fluorescent display are dim, please follow the method of Display brightness
control described in S.5-1.
In this position (called OFF LINE hereafter), only the micro-controller is operational, while the amplifier
itself is still turned off (and the tube is not powered at all).
C A U T I O N
C A U T I O N
Fig.3-1 ACOM1500 Display and Control
N O T E
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