5-11 Touch Screen Replacement Chapter 5 — Assembly Replacement
5-16 PN: 10580-00342 Rev. D MS2720T MM
5-11 Touch Screen Replacement
This procedure provides instructions for replacing the touch screen.
1. Open the case as described in Section 5-3 “Opening the Spectrum Master Case”.
2. Remove the Main PCB assembly from the front panel as described in Section 5-6 “Main PCB Assembly
Replacement”.
3. Remove the LCD bracket assembly from the front panel as described in Section 5-9 “LCD Assembly
Replacement ”.
4. Remove the touch screen flex circuit connector from the Keypad PCB by pulling the tabs on each side of
the connector away from the connector and in the direction of the flex circuit, Refer to Figure 5-13.
5. Pull the flex circuit out of the connector housing.
6. Remove the touch screen from the bezel by pulling it straight up. (You may push the touch screen up from
the front of the front case to help get it off the gasket material on the bezel.)
7. Reverse the above steps to install the replacement touch screen.
• Carefully close the locking tab on connector J2 to secure the flexible switch pad connection. The
tab should “snap” into position when fully closed.
• Perform a touch screen calibration by pressing the Shift key and then the 0 key, follow the
on-screen directions.
Figure 5-14. Touch Screen
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