Assembly Replacement 7-11 Keypad and Keypad PCB Replacement
MT8212E and MT8213E MM PN: 10580-00255 Rev. J 7-11
7-11 Keypad and Keypad PCB Replacement
This procedure provides instructions for removing and replacing the keypad and the keypad PCB.
1. Open the case as described in Section 7-2 “Opening the Cell Master Case”.
2. Remove the Main VNA/PCB assembly from the front panel as described in Section 7-3 “PCB Assembly
Replacement”.
3. Perform Step 1 through Step 4 of Section 7-9 “LCD Assembly Replacement”.
4. Remove the 8 screws and the cable connectors to remove the Keypad PCB (Figure 7-14). The Rubber
Keypad is located under the Keypad PCB.
5. Reverse the above steps to install the replacement Keypad and/or Keypad PCB.
6. The Keypad PCB stores the touch screen calibration data. If the Keypad PCB is replaced, then a touch
screen calibration must be performed. If no touch screen calibration data is stored in the new Keypad
PCB when powering on a instrument, it will stay at the boot up screen with the Anritsu logo shown and
a message at the bottom of the screen stating:
Failed to load touch screen calibration data. Please reboot the instrument.
If this message is displayed, power off the instrument and power the instrument up in bootstrap mode by
pressing and holding down the Shift - 4 - 0 keys while pressing the power on button. Now the instrument
will boot up in bootstrap mode and prompt you to perform a touch-screen calibration. After following the
on-screen calibration directions, power the instrument off and it will boot up correctly on the next power
cycle.
7. If the Keypad PCB was replaced with a PCB that has touch screen calibration data, the instrument will
boot up properly, but the touch-screen calibration data will be invalid. Perform a touch-screen
calibration by pressing the Shift key and then 0 key, and follow the touch-screen calibration directions on
the screen.
Figure 7-14. Front Panel Keypad Bezel
Speaker
Rotary Knob
Encoder
Touch Screen
Connector
Touch Screen
Keypad Switch
Connector
Keypad PCB (Remove 8 Screws)
Backlight PCB
Connector
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