User's Manual
14
servicing
It is possible to remove the working “guts” from the microphone body in one operaon to replace a tube.
Please follow the procedure below, referring to the diagram on the right for details.
1. Turn the power supply o, disconnect it from the wall, and disconnect the supplied cable from the
microphone. Allow 10 minutes for voltages to discharge.
2. Using a Philips screwdriver, remove the two Philips at head screws and star washers on the
microphone body that hold it to the base of the microphone.
3. Gently pull the base of the microphone out from inside the body. The guts of the microphone will
come out as one assembly. Note: Only pull the insides out enough to expose the tube - DO NOT
touch the delicate capsule!
4. Gently grasp the tube between your thumb and forengers, and wiggle it out of the socket.
5. Taking care to align the pins properly, insert the new tube into the socket, and repeat these steps
(again, CAREFULLY) to return the guts to the inside of the microphone with a gentle twisng
moon. Make sure to properly ghten the screws at the base for a good chassis to ground
connecon!
Internal Ground Li: This jumper is
located on the rear PCB of the PSU. On
earlier models it is a wire link (le photo),
on later models it is a removable jumper
(right photo) marked as JP1. If the circuit
ground is required to be separated from
the chassis to stop hum generated by
an “earth loop”, this link can be cut (or
desoldered) or the jumper removed.
The Type 2 SMPS MANLEY POWER
®
power supply will work everywhere on earth. It does not need to be recongured for
dierent countries’ mains voltages (90-250VAC) and will operate on any mains frequency (50 or 60 Hz).
slide the mic guts out this way --->
Voltage Change (Linear PSU only): The Type 1 PSU is a linear design and
the power transformer must be congured for your country’s voltage. You
will destroy the power transformer if you plug a PSU set to 120VAC into a
230VAC wall socket. The serial # scker indicates the voltage for which the
unit was originally congured at the factory. To change the voltage, set the
links on the PSU PCB as described on the AC Selector chart next to the links.
This procedure will require a soldering iron. You will also need to change the
fuse to the new required value (see page 15), and we recommend re-labeling
the unit so that its operang voltage is clear to everyone.
Wire link (Type 1 Linear PSU) Jumper (Type 2 SMPS)