User Guide

Checks the ambient light sensor
Tests the home button
Control-panel diagnostic flowcharts
TIP: To open the diagnostic mode: Tilt the control panel forward. On the back side of the control
panel, use a paperclip to press the button inside the small hole near the center of the control panel.
Use the flowcharts in this section to troubleshoot the following control panel problems.
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Touchscreen blank, white, or dim (no image)
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Touchscreen is slow to respond or requires multiple presses to respond
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Touchscreen has an unresponsive zone
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No control-panel sound
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Home button is unresponsive
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Hardware integration pocket (HIP) is not functioning (control panel functional)
126 Chapter 2 Solve problems ENWW