Service manual

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OCTOBER 27, 2000
[PART NUMBER]
PX-600 Field Repair Guide Page 8
PX-603 LED indicator
light always stays RED.
Unit is in protect mode.
Check AC line voltage.
Check that speakers are not shorted.
Check data bus connection.
Requires 110VAC constant.
No lower than 8 Ohms per channel.
Connect data bus with correct polarity.
PX-603 LED indicator
light always stays Yellow.
Unit is always in stand-by
Check line level signal feed continuity.
Check DIP switch settings.
Check Data bus connection.
Insure continuity to PX-603 input.
Set switches to correct system, zone, and room
address.
Insure correct connection and polarity to data bus.
When using KP3 keypads a 6-conductor wire must be
home run.
PX-603 LED indicator
light always stays Green.
Unit is always ON.
Check DIP switch settings.
Check Data bus connection.
Check ALL ON group settings.
Was the room turned on by issuing
an All On command?
Set switches to correct system, zone, and room
address.
Insure correct connection and polarity to data bus.
When using KP3 keypads a 6-conductor wire must be
home run.
All On commands are set in group set up for single
systems and in Multi set up in multi configurations.
To issue an All On command press and hold the ON
button from a keypad that is not currently on.
PX-612 LED indicator
light always stays RED.
Amp is in protect mode.
Check AC line voltage.
Check that speakers are not shorted
and that the impedance is correct.
Check for DC offset for sources or
Preamp.
Check for overheating.
Requires 110VAC constant.
No lower than 4 Ohms per channel.
Change or repair source.
Change or repair Preamp.
Ventilate cabinet.
PX-612 LED indicator
light always stays Yellow.
IE: unit does not come
out of stand-by.
Check input signal from Preamp.
Check continuity of cabling feeding
amp.
Feed a direct signal to Amplifier such as from a CD
player to see if it turns on and off with signal sensing.
Change or repair defective cable.
PX-612 LED indicator
light always stays Green.
IE: Amp is always ON
Is there a cable system attached to
the Audioaccess controller?
Is there a local system sharing
sources with the system? Some
receivers short the input to ground
when in stand-by condition.
Disconnect cable. If the problem goes away then use
a ground loop isolator in line with the cable input feed.
Disconnect wiring feeding the local system. If problem
goes away use an in line (RCA style) ground loop
isolator to bring the signal to the local system.
Subsequent units in multi
system (other than
system 1) always jump
back to FM after another
source key has been
pressed.
PX-connect or MRX-connect
sequence was not performed
correctly.
Start system 1 and go into the multi set up menu.
Choose multi set up again then identify which unit it is
and how many units there are in the system. Follow
all the steps in the menu. Go to the subsequent units
and follow the same procedure. Last step is to go to
multi set up in system 1 and run XX-Connect then exit
programming completely. When exited push the All
Off key on the front panel of the highest number
system to the lowest. This provides a handshake
between systems.
Subsequent units in multi
system do not respond to
any commands other
than front panel.
Check Data bus connection.
Connect with correct polarity while not connecting the
RED (or power) wire.
Make sure ke
yp
ads are correctl
y
connected for