McIntosh MCC204 Owner's Manual download pdf (Page 16)

How to Replace the Fuses

If the MCC204 produces no sound, there is no Illumination

of the Nomenclature on the Top Glass Panel, and the power

connections seem secure, one or more of the Amplifiers

Fuse(s) may have failed. Under normal operating

conditions your amplifiers fuses should not fail. Failure of

a fuse is usually an indication of a problem. Replacing the

fuse, if there is a problem in the amplifier, may incur a risk

of further damage. Refer to figures 9, 10 and 11.

Caution: Disconnect the Amplifier from the Vehicle Battery

(or DC Power Supply) as Potentially Dangerous

Currents exist inside the amplifier.

1. Before accessing fuses, disconnect both the positive

and negative power cables from the DC input

terminals on the left side of the amplifier using a

5/32 hex key.

2. Remove the Top Glass Panel by first removing the

four hex bolts with the supplied 3/32 hex key.

3. To remove the Top Glass Panel, attach the supplied

suction cup to the top center of the glass panel and

carefully raise it high enough to put your hand under.

Temporarily place the removed glass panel in a safe

place, remove the suction cup and save it for future

use.

4. Remove the Phillips Screws holding the End Caps on

both sides of the amplifier and lift the end caps off.

5. Remove the two Phillips Screws located between the

row of Controls/Switches and the Top/Bottom edge

of the Gold Faceplate Control Panel.

6. Remove all 10 crossover, equalizer and sensitivity

knobs.

7. Remove the Gold Faceplate Control Panel.

8. Remove the fuses with needle nose pliers, taking care

to avoid hitting parts on the ciruit board.

Note: To determine if the fuse has failed, examine the

link between the two fuse legs to see if it has a

break in it.

9. Replace the fuse with one of the same type and

rating, as unauthorized substitutions may prove

hazardous to you and the amplifier.

10. When reinserting the fuse, set it in place with the

pliers, then push it the rest of the way in with your

finger to avoid having the pliers slip and hit the

circuit board.

11. Re-install the Gold Faceplate Control Panel and all

10 crossover, equalizer and sensitivity knobs.

12. Re-connect the power cables to the vehicle battery.

If the replacement fuse(s) fails again, have the amplifier

repaired at a McIntosh Service Center.

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McIntosh MCC204 Owner's Manual Page 16

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