Panasonic EB-GD93 Service Manual page 59

5. Disconnect VBAT by setting the BCVCU Voltage switch to OFF.
6. Measure the voltage across the Test Battery terminals. If the voltage is within the range 4.2 V ±5 mV, proceed to step 11.
Otherwise, calculate the difference (DAC STEP) as follows:
difference = (measured voltage - 4.2 V) / 7.4 mV
7. Press Shift + F4.
8. Scroll down and select PROG CHARG-DAC DATA and enter the value calculated by subtracting the value recorded in
step 6 from the initial CHARG-DAC DATA value (439).
9. Repeat steps 6 to 8 until the measured voltage is 4.2 V ±5 mV.
10. If the final value is outside the range 342 - 542, then there is a fault and further investigation is required. Otherwise, record
the value for use later.
11. Press F6. Highlight TRIM OTHER and press ENTER. Highlight DAC REFERENCE and press ENTER.
12. Enter the value recorded in step 10.
MCUK001002C8
Service Manual
Figure 6.31: Charging Calibration 2
Figure 6.32: Charging calibration 3
Section 6
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TEST AND MEASUREMENT
Issue 1
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