Instruction manual Digital 9000 System

If a problem occurs ...
112 | Digital 9000
L 60 charger
If a problem occurs that is not listed in the above table or if the problem
cannot be solved with the proposed solutions, please contact your local
Sennheiser partner for assistance.
Problem Possible cause Possible solution
The LED 1 does
not light up
Charger is not
connected to the
mains
Check if the L 60 is
connected to the NT 3-1
mains unit and if the mains
unit is connected to the
mains (see page 102).
Cascaded L 60
chargers are not
correctly connected
to one another
Check if a maximum of four
L 60 are correctly connected
to one another (see page
46).
More than four
chargers are
cascaded
Unstable voltage of
the mains unit
Replace the defective mains
unit or mains cable with a
new one.
Mains unit or mains
cable is defective
No contact with the
accupack
Insert the accupack correctly
into the charging
compartment (see page
102).
Contacts of the
accupack or contacts
of the charging
compartments are
dirty
Clean the charging contacts
of the accupack and of the
charging compartments
(see page 107).
Accupack is
defective (overaged
or defective
rechargeable
battery cells)
Replace the defective
accupack with a new one.
The LED 1 flashes
red
Wrong accupack/
individual
rechargeable
batteries/batteries
(primary cells) have
been inserted
Only charge BA 60 or BA 61
accupacks with the L 60
charger.
Accupack
temperature is too
low or too high/
air humidity too
high
Always recharge the
accupack within the
operating temperature range
and the air humidity range
stated in the specifications
(see page 122).
Accupack is
defective (overaged
or defective
rechargeable
battery cells)
Replace the defective
accupack with a new one.