Martin MiniMAC Maestro Bedienungsanleitung PDF herunterladen (Seite 70)

70 Maintaining the electrical system

Main fuse

To replace the main fuse:

1. Make sure the Exterior 600 is

isolated from AC power and has

cooled for at least 20 minutes.

2. Remove the ten 4mm Allen screws

from the rear cover plate. Carefully

remove the plate and seal.

3. The main fuse is located in a fuse

holder inside the electronics

section, to the left of the ballast. Using a flathead screwdriver, open the

fuse holder and remove the fuse.

4. Replace the defective fuse with one of the same size and rating.

Replace the fuse holder.

5. Before closing the cover plate, check the condition of the seal. Replace

with a new one (P/N 20600020) if the seal is torn, cracked or brittle.

6. To close, insert the Allen screws through all holes in the cover and seal.

Place the cover firmly against the body. Adjust the straight sides of the

seal so that they stick out a little, just enough so that you can feel the

seal when you run a finger across the joint.

7. Cross-tighten the cover screws evenly to a torque of 2 Nm (1.5 ft.-lbs.).

At this torque, the seal will be compressed by about one-third.

Fuses on the PCB

To replace any of the fuses on the PCB:

1. Make sure the Exterior 600 is isolated from AC power and has cooled for

at least 20 minutes.

2. To open the fixture, remove the ten 4mm Allen screws from the rear

cover plate. Pull off the plate and seal.

3. To remove the printed circuit board from the fixture, remove the 2 Philips

screws from the aluminum bracket and pull the board out.

4. You will find a diagram of the PCB, that includes the fuses, in “PCB

layout” on page 78. Locate and replace the defective fuse with one of

the same size and rating.

5. Replace the PCB.

Ballast

Tran s-

former

Mains

fuse holder

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Martin MiniMAC Maestro Bedienungsanleitung Seite 70