General Power Checking - Nokia 300 Service Manual

RM-781
BB Troubleshooting and Manual Tuning Guide

General power checking

Check the following voltages:
Signal Regulator
Rename
VIO N2200
VBACK N2200
VSIM1 N2200
VAUX1 N2200
VR1 N2200
VRFC N2200
VREF N2200
VCORE N2200
VMEM N2200
VDIGIMIC N2200
Issue 1
Sleep Idle
ON ON
ON ON
ON ON
ON ON
OFF ON
OFF ON
ON ON
ON ON
OFF OFF
OFF OFF
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Nominal Main user
voltage
1.8 Memory, I/Os,
Display
2.5 Back-up
battery
1.8/3.0 SIM card
2.8 TV-OUT, 3DFS,
MR, Display
2.5 Crystal
oscillators
1.8 RAPU
converters
1.25 RF reference
1.2 RAPU digital
2.9 microSD
1.8 Digimic
Notes
Can change due
to RAPU version
& SW
Disabled in
sleep
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