Panasonic EB-X70 Service Manual

Also see for EBX70 - CELL PHONE: Operating instructions Operating instructions Technical information Service manual

CALIBRATION PROCEDURESPMCD030901C8 Section 9 Issue 1Service Manual – 53 – Revision 09.2.3 Automatic Calibration ProcedureThis procedure requires the use of a Gigatronics 8541C or Wavetek 4400 power meter.1. De-case the handset as described in Section 6.2.2. Connect the test equipment as shown below.Figure 9.1: RF calibration test connections3. Select X70 and then select the required band, e.g. ‘GSM (900 MHz)’.4. With the CB2000 software running, select ‘TX CAL’ button5. When the Tx Calibration screen is displayed, start automatic calibration by selecting the ‘Run Auto Cal’ button.6. Once the automatic calibration has finished, select the ‘Run Auto Verify’ button to verify the calibration.7. When finished, select the ‘EXIT’ button to save data to the handset. A confirmation message will be displayed in the nextbox.9.2.4 Manual Calibration ProcedureThis procedure is used to adjust or verify each calibration channel in turn.1. Ensure the correct offset values for attenuation are stored in the Setup menu.2. Connect the test equipment as shown in Figure 9.1:3. Select X70 and then select the required band, e.g. ‘GSM (900 MHz)’.4. With the CB2000 software running, select the ‘TX CAL’ button.5. The Tx Calibration screen should be displayed.6. Within the Manual Calibration area of the screen, select the ‘START CALIBRATION’ button.7. Carry out any instruction displayed in the top text box. The second text box displays the expected power meter reading forthe given channel. The text box to the right of the ‘ADJUST POWER’ slider displays the current DAC value for the channel.8. Adjust the DAC value on the CB2000 until the power meter is within the power limits listed in paragraph 9.2.1..Note: If other media programs are running, e.g. Winamp, an error message may be returned.NOTE: To ensure that the telephone operates within set SAR margins, Panasonic recommends that a power metercapable of measurement to an accuracy of ±0.2 dB is used when calibrating power levels. Use of a lessaccurate power meter may result in the telephone failing to meet SAR standards.NOTE: To ensure that the telephone operates within set SAR margins, Panasonic recommends that a power metercapable of measurement to an accuracy of ±0.2 dB is used when calibrating power levels. Use of a lessaccurate power meter may result in the telephone failing to meet SAR standards.+3.7V POWER SUPPLY PCCABLE 1PCB REPAIR JIGGSM TESTERRF CABLE10745-1GPIB-USB CABLE