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Overvoltage Conditions; Software Programming - Siemens S6 Power Service Manual

Gsm mobile phones.
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The ASIC also checks the presence of the watchdog signal from the µP and provides
the switching on functionality (ON_OFF button or Ignition signal).
During testing ist is advisable to use a battery dummy, connected to a power supply
delivering +4V, max 3A.
Make sure that you connect the battery dummy with the right polarity, the red plug to
+4V and the blue plug to ground.
If you use a voltage higher than +7V, or with wrong polarity, the phone can be

Overvoltage Conditions

a) Battery Voltage:
b) Charging Current:
-> Be careful with foreign accessories or chargers!
-> Make sure that the charging current is limited to a value below 1A!

Software programming

The software of the S6 Power handsets is programmed directly from a PC using the
bootadapter (see drawing below).
If the battery voltages rises above 6.2 Volts, the phone will
switch off and it cannot be switched on again before the
voltage is lower than 6.2 Volts.
If the battery voltage rises above 7 Volts the phone can be
The charging current must not rise above 1 A or the
phone (fuse) will be inoperable.
Page 13 of 18
Private Communication Systems
Mobile Phones
D. Schnoor


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