4
1.4.
Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
• No sound is heard when the power is turned on.
• Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
1.5.
Caution For Fuse Replacement
Summary of Contents for SA-AKX54PH
Page 13: ...13 5 General Introduction 5 1 Media Information ...
Page 14: ...14 6 Location of Controls and Components 6 1 Remote Control Key Button Operation ...
Page 15: ...15 6 2 Main Unit Key Button Operation ...
Page 16: ...16 7 Installation Instructions 7 1 Speaker and A C Connection ...
Page 18: ...18 8 2 Doctor Mode Table 8 2 1 Doctor Mode Table 1 ...
Page 25: ...25 9 1 2 Main P C B Front side Fig 2 Main P C B ...
Page 28: ...28 9 3 D Amp IC Operation Control ...
Page 33: ...33 11 2 Main Components and P C B Locations ...
Page 66: ...66 ...
Page 76: ...76 ...
Page 78: ...78 ...
Page 120: ...120 ...