(4.0E)
6-1
no so und
PO W ER sw itch o n?
turn PO W ER sw itch o n
fuses o .k.?
rep la ce fuse
m a ins vo lta g e in
200..265V ra ng e?
sup p ly vo lta ge w ithin lim its
p o ssib ility o f A 1 fa ilure
fan w o rking ?
PRO T LED o n?
PO W ER LED
TEM P LED fla shing?
w ro ng b o x co nnected
clea n filter fo a m
check a ir sup p ly
w a it m a x. 15 m in.
try ag a in
ISP LED o n?
C O /M m uted ?
C A -C O M s
fitted co rrectly?
PRO T LED o n?
check sig na l w iring a nd
sig na l so urce
relea se M U TE sw itch
w o rks w ith o ther
sp ea ker cab le?
w o rks w ith o ther b o x?
ca b le fa ilure
sp ea ker fa ilure
p o ssib ility o f A 1 fa ilure
co rrect bo x co nnected ?
w ire co rrectly
p ress and release
M U TE sw itch
if still no t o .k.:
turn PO W ER sw itch o ff,
w a it 2 m in.,
turn PO W ER sw itch o n
ID LED
no
no
no
yes
no
yes
no
yes
no
yes
yes
no
o ff
flashing
no
o ff
flashing
o n
o n
6. Troubleshooting
