PQA
PQA
8
8. Bridge mode
As the work is in bridge mode, CH A output + connector is the Bridge
connector +; while CH B + connector is the Bridge connector -.
PQA
SERIES
PROBLEM
SOLUTIONS
FAULT
AC supply not connected or
switched off
Check AC connections and switches
No sound
(power
LED off)
Check and replace fuses at plug and IEC
socket. USE ONLY SAME TYPE AND RATING!
Blown fuse
No input,
Check input is connected, and LED
NO sound
(Power
LED on)
or input too low
Level controls set too low
Increase level controls
Speakers faulty or
not connected
Check speakers and speaker connections
Use good quality, shielded signal cables and
ensure they are kept away from AC power cables
and other AC powered equipment
Noise from AC supply is being
picked up in the signal path
Hum or
buzz is
audible
Use a mains tester to ensure the AC outlet
has a good earth. Power connected equipment(e.g mixer
and amp) from the same AC outlet where possible.
There is an earth problem
Use the LED to ensure the AC outlet has a good earth.
Power connected equipment from the same AC outlet
where possible
Excessive signal level
somewhere in signal chain.
Distortion
is audible
Use only high quality cables of the appropriate type,
protect them from damage and regularly
check connections.
Damaged or poor quality
cables
Damaged or poor quality
cables or connectors,
connectors not properly
inserted, amp overheating
Sound cuts
out or is I
ntermittent
Check all cables and connections, refer to above
sections regarding distortion and temp warning light
Service
All the products are thoroughly examined and tested
before leaving the factory, and if used correctly will give you
many years of excellent service. However,
if a problem arises, proceed as follows:
(A) contact the retailer from whom the unit was purchased and
describe the symtoms of the fault.
(B) if the retailer connot help, return the equipment to the
national distributor for your country. Use the original packaging
to protect the product from damage. Include a note with the
equipment stating your name and address, details of the
problems, date code and date and place of purchase.
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