DOWNLOAD Panasonic KX-UT670RU Service Manual ↓ Size: 4.45 MB | Pages: 104 in PDF or view online for FREE

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*1.Confirm if display changes by tapping application or key on the touch panel.
*2.Confirm if the brightness of LCD changes in the following procedure.
   Tap "Settings"

→ "Display" → "Brightness" on the application screen and check "Automatic Brightness" .

   After the checkmark is set in green, then tap "OK".
  Cover the sensor area with the hand.
  If the brightness of LCD changes,the illuminance sensor works properly.
*3. Connect USB keyboard to USB connector.
     Tap "Calculator" on the application screen.
    Input any numbers form USB keyboard.
    Confirm if the number displayed equals the number input.
*4.Prepare SD card. 
    Preserve the image data on the SD card.
    Insert SD card.
    Tap "Gallery" on the application display.
    Confirm the image data preserved is displayed. 
*5.(Check for LAN port)
   Connect LAN cable between LAN port and PC.
   Confirm if PC recognizes test set's IP address.
   (Check for PC port)
   Connect LAN cable between LAN port and switching hub.
   Connect LAN cable between PC port and PC.
   Confirm if PC recognizes test set's IP address.

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The power supply circuit by PoE of this product uses the DCDC converter of the insulation type. 
Use GND on the primary side when you measure the primary side. 
Distinguish the primary GND and the secondary GND.

Refer to waveform (1) and (2) in  Waveform