Radio Shack 85 Replacing the Fuses, Replacing the Tube-Type Fuse, Replacing a Blade-Type Fuse

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12-1977.fm Page 26 Tuesday, July 13, 1999 10:07 AM

REPLACING THE FUSES

If the amplifier shuts down, you might need to replace the power wire’s 50-amp tube-type fuse, either of the two 25-amp blade-type fuses on the back panel, or all three fuses.

Cautions:

Do not use a fuse with ratings other than those specified here. Doing so might damage your amplifier.

After replacing a fuse, let the amplifier cool down before you turn it on again.

Turn off your autosound system, then disconnect the cable from your vehicle bat- tery’s negative (-) terminal.

Replacing the Tube-Type Fuse

1.Grasp the two ends of the power wire’s fuse holder and twist one of them counterclockwise, then pull the ends apart.

2.Insert a new 50-amp, tube-type fuse into the longer of the fuse-holder’s ends, then grasp the fuse-holder’s two ends, push them in and twist them clockwise.

(Illus for Step 1

Replacing a Blade-Type Fuse

1.Grasp the fuse’s plastic end and pull it out.

2.Grasp the new fuse’s plastic end and simply push it in.

(Illus for Step 1

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Contents 85 × 4 High Power 4-Channel Trunk Mount Amplifier Features Automatic Thermal ProtectionMute Turn On Circuit eliminates Contents Choosing a Mounting Location Before YOU Begin the InstallationPreparation Connecting Ground and PRIMARY/SWITCHED Power Illus please add a dwg that illustrates step Connecting to Your Autosound System Low Level Input ConnectionsFm Page 9 Tuesday, July 13, 1999 1007 AM Fm Page 10 Tuesday, July 13, 1999 1007 AM High-Level Input Connections Floating Ground Connection Common Fm Page 13 Tuesday, July 13, 1999 1007 AM Connecting the Speakers Preparing the Speaker WiresConnecting Four Speakers Connecting Two Speakers Unbridged Connection Connecting Two Speakers Bridged Connection Fm Page 18 Tuesday, July 13, 1999 1007 AM Connecting Two Unbridged Speakers and One Bridged Subwoofer Testing the Connections Mounting the Amplifier Fm Page 22 Tuesday, July 13, 1999 1007 AM Turning on the Amplifier Setting the Level Control Operation Over Freq Control Using the Frequency CrossoverOver Freq On/Off Switch Maintenance Replacing a Blade-Type Fuse Replacing the FusesReplacing the Tube-Type Fuse Specifications Radio Shack