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Desktop Macintosh: Power, Reset, and Interrupt Buttons (Apple Docs, Part 1/2) [Art: 14117 + TA21599]

Category: DocsInfoApple

Composed by: OxYGeN

On: 2023-07-13 09:53:08

Desktop Macintosh: Power, Reset, and Interrupt Buttons

Last Modified: June 01, 2007
Article: TA21599

Old Article: 14117

This document describes the location of power, reset, and interrupt buttons on modular Macintosh models made before November 1997. For models made since 1997, see technical document 86225, "Desktop Macintosh: Power, Reset, and Interrupt Buttons, Part 2".

To determine the equivalent Performa model to the Macintosh models listed below, see article13998: " Macintosh to Performa Comparison Chart".

General Information: Power Buttons
The power button on modular Macintosh models is typically located on the back of the computer close to the right or left side (depending on the model).

Power buttons come in different shapes and sizes. Some are push buttons (round or square), which may be plain, or may include a sideways triangle or a circle with a small straight line inside. Others are toggles, which include a 1 and a 0 (1=On, 0=Off).

General Information: Reset and Interrupt Buttons
The reset and interrupt buttons are located in different areas on different models. Refer to model-specific descriptions below.

The reset button is marked with a small triangle as shown in Figure 1. Pushing the reset button restarts the computer.

The interrupt button is marked with a circle; if the button is large enough there is a crooked line in the circle, as shown in Figure 1. It is used by software programmers when writing applications and debugging them.


Reset button icon	Interrupt button icon

Figure 1 Reset and Interrupt button icons

Keyboard Commands

If the computer does not have a reset button, press the Command-Control-Power keys instead.

If the computer does not have an interrupt button, press the Command-Power keys instead.

Modular Macintosh Model Specifics

Model	Power Location	Reset/Interrupt Location
Macintosh II, IIx, IIfx	Back panel.	Right side of the computer near the rear. You must install the buttons.
Macintosh IIcx, IIci	Back panel. Rotate 90 degrees to lock power on.	Front panel, lower left.
Macintosh IIsi, LC, LC II, LC III, LC 475, Quadra 605, Performa 400 series	Back panel.	None. Use keyboard commands.
Macintosh LC 550, Macintosh TV, Performa 550 and 560	Back panel.	None. Use keyboard commands.
Macintosh LC and Performa 575, 577, 578, 580	Back panel.	None. Use keyboard commands.
Macintosh 630 family, Performa 6200, 6300, and 6360 series	Back panel.	None. Use keyboard commands.
Macintosh Performa 6400 series	Back panel.	None. Use keyboard commands.
Macintosh IIvx, IIvi, Performa 600, Centris 650, Quadra 650	Back panel.	Front panel, lower left.
Macintosh Centris/Quadra 610	Front panel, lower right side.	Back of computer.
Macintosh Centris/Quadra 660AV	Front panel, lower right side.	None. Use keyboard commands.
Macintosh Quadra 700, 800	Back panel.	Front panel near bottom.
Macintosh Quadra 840AV	Front panel, upper right.	None, use keyboard commands.
Macintosh Quadra 900, 950	None, use key lock.	Front panel, near top left.
Power Macintosh and Performa 5200 and 5300 series	Back panel.	None, use keyboard commands.
Power Macintosh and Performa 6100 series	Front panel, lower right side.	Back of computer or use keyboard commands.
Power Macintosh 7100 series	Back of computer.	Front panel on left side or use keyboard commands.
Power Macintosh 7200, 7500, and 7600 series	Front panel, left side.	Use keyboard commands.
Power Macintosh 8100 series	Back panel.	Front panel near the bottom or use keyboard commands.
Power Macintosh 8500 and 9500 series	Front panel, near top.	Use keyboard commands.