Panasonic EB-GD30 - Manual (Page 57)

TEST AND MEASUREMENT
MCUK991001C8 Section 6 Issue 1
Service Manual – 51 – Revision 0
6.5.6 Battery Charging & Calibration
There are three procedures to calibrating the battery, voltage, temperature and charging calibration. A Battery Calibration
Voltage Control Unit (BCVCU) is used to provide the necessary voltage levels for these checks. The BCVCU replaces the two
regulated power supplies and 82 Ohm resistor required to calibrate previous mobile phone products.
Preliminaries
1. Connect the mobile phone, test battery, BCVCU and Interface Box as shown in the diagram below.
Figure 6.32: Battery Calibration Test Connections
2. Set the Interface Box to output to 7.2 V. Leave the power supply switched OFF and set the MODE or EXT PWR switch to
OFF.
Voltage Calibration
1. Set the BCVCU to 4.1 V (centre position on switch) and set the 82 Ohm switch to OFF.
2. Select and run the Channel Box software in ‘Test Mode’.
3. Press [F10] and power the phone on. "TEST SET TEST MODE" should be displayed in the phone display.
4. Press [F4] on the PC. Go to, and select: "VIEW ADC LINES".
5. Look at ADIN1 (BAT VOLT) reading. This reading is "BAT VOLT HIGH". If reading is outside the range 803 and 723, then
there is a fault and further investigation is required. Otherwise, record the value for later use.
6. Set the BCVCU output to 3.0 V.
7. Press "[Y]" [enter] on the PC to re-read ADC Data.
8. Look at ADIN1 (BAT VOLT) reading again. This reading is "BAT VOLT LOW". If the reading is not within the range 518
and 598, then there is a fault and further investigation is required. Otherwise, record the value for later use.
9. Press [N] (in repeat yes/no box), then [enter].
10. Press [F6]. Go to, and select: "TRIM Other". Go to, and select: "BAT VOLT HIGH". Enter value from step 5 above.
11. Press [F6]. Go to, and select: "TRIM Other" again. Go to, and select: "BAT VOLT LOW". Enter value from step 8 above.
Set the BCVCU output to 4.1 volts.
Temperature Calibration
1. Ensure that the BCVCU output is set to 4.1 V.
2. If the ADC data is not already being displayed, press [F4], "VIEW ADC LINES", [enter].
3. Look at the value for ADIN3 (BAT TEMP). If the value is outside the range 390 and 428, then there is a fault and further
investigation is required. Otherwise, calculate the difference between the reading and the theoretical value of 409. Record
this value for use below.
4. Press [N] (in repeat yes/no box), then [enter].
5. Press [F6]. Go to, and select: "TRIM Other" again.
6. Go to, and select: "BAT TEMP". Enter the value recorded in step 3.