GE MAC 3500, Service Manual, Page: 52 / 180

4-12 MAC™ 3500 Resting ECG Analysis System
Revision L

2021337-036
Troubleshooting: Diagnostic Tests

For information on Speaker Test , go to “Speaker Test” on page 4-13.
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For information on Keyboard Tests , go to “Keyboard Test” on page 4-13.
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For information on Writer Tests , go to “Writer Test” on page 4-14.

For information on Battery Test , go to “Battery Test” on page 4-16.
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For information on Communication Test , go to “Communication Test” on
page 4-18.
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For information on Acq. Module Tests , go to “Acq. Module Tests” on page 4-
21.
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For information on Analog I/O Tests , go to “Analog I/O Tests” on page 4-22.
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For information on SD Card Tests , go to “SD Card Tests” on page 4-25.
Display Test
The purpose of the test is to verify that all the screen pixels are working and that the
brightness and contrast samples are within the normal range.

Pixel Verification Test . Select the Pixel Verification Test and press F1 to see
whether any of the pixels are defective. Loss of pixels may require replacement
of the LCD display.

Gray Scale Test Patterns . This test is for manufacturing use only.
14A
16A