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SCCE Training Group
"Totally dead" voltages and signals to check
To make the following measurements it is necessary to press the power switch button on several times, otherwise all
signals and voltages are only visible for around 250ms (except VBATIN).
Check VBATIN=3.6 VDC at L260 (depends on workbench supply). If not ok, check X101, X102 battery connectors for
mechanical damages or cold solderings. Refer also to chapter "Additional information/Different battery connectors".
Check 32.768 kHz sinewave, Vpp = 800 mV at C210 (see picture below).
Oscilloscope settings:
Ampl:
200mV
Time/Div:
10µs/Div
AC/DC/GND:
AC
If there is no signal, check B200 circuit for shorts or disconnection and change faulty components.
Check PWRONX at S300 pin 2/ 4:
If not ok, check PWRONX-line from S300 to UPP D400 for shorts or disconnections.
Check SleepClk = 32.768 kHz, Vpp = 1.8 V square wave at J404 (see picture below).
Oscilloscope settings:
Ampl:
500mV
Time/Div:
10µs/Div
AC/DC/GND:
AC
If not ok, check 32kHz B200 circuit for shorts or disconnections.
© NMP 2003
CONFIDENTIAL
NPE-4 6310/NPL-1 6310i
Date 22.04.2003
Key not pressed = 3.6 VDC (depends on Workbench supply voltage)
Key pressed
= 0 VDC
Checked by:
SCCE Training Group
11 (29)
Repair Hints
Version 3.0 Approved
Approved by:
SCCE
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