Manley DIGITAL TO ANALOGUE CONVERTER DAC 1994 - 1995 - Manual (Page 6)

MUTE ERROR LED. Red LED indicates when the Output Muting Circuit is activated.
The output is reduced by over 60 dB : When there is not "VALID DATA"
When the PLL is not yet "LOCKED"
For 30 seconds during "WARM UP" after
first powering on the converter.
Immediately when the unit is "turned off".
For 1 second between "INPUT SELECTS"
DEEMPHASIS LED: Lit only if the digital data has been pre-empasized. There are
very few CD's with Pre-Empasis and it is unlikely that the
deemphasis circuit (equalizer) will be switched in automatically.
POWER LED: Lit when the Converter is plugged into the wall and the power
switch is on. If not lit check that the power cable is correctly
plugged in and that the fuse is good.
POWER SWITCH: In one position the Converter will be dark and will filter all data
from becoming audio at the outputs. In the up position LEDs will
light up and the Converter will filter the data for 30 seconds
before it lets music thru. Some users prefer only to use the up
position so that the unit is always well warmed up and ready for
serious listening. Others prefer the longer tube and capacitor life
and lower utility bills of using both positions.
12AU7 12AU7
6414 6414
LEFT RIGHT GOLD
PLATED
DIGITAL
BOARD