K850
1203-2528 rev. 1
TROUBLESHOOTING
Reference Measurement Points
TROU
B
L
E
S
H
O
OTIN
G
Voltages to N2000
Clocks to N2000
MP
MP PBA GND
MP 79 (X2200 Pin 3)
MP 31 (TP2200)
MP 29 (TP2202)
MP 48 (C2242)
Power sup 3.80 V
MP
MP 85 (C2116)
MP 6 (B2101_Pin7)
GND
VBAT
VBATI
BDATA
VDD_REF
SYSCLK1/MCLK RTCCLK
Phone Off
0.00V
3.8V
3.8V
0.00V
3.8V
Phone Off
0Hz
32.768kHz
Power sup 0.00 Volt
Phone On
0.00V
3.8V
3.8V
0.00V
3.8V
Phone On
26MHz
32.768kHz
Power sup 3.80 Volt
Voltages from N2000
Clocks from N2000
MP
MP 17 (ST2204)
MP 11 (ST2203)
MP 9 (ST2208)
MP 14 (ST2212)
MP 34 (ST2213)
MP 36 (ST2214)
MP
MP 21 (R2125)
VAUDIO26
VANA25
VDDE18
VBT27
VDIG
VBEAR26
RTCCLK
0.00V
0.00V
0.00V
0.00V
0.00V
0.00V
Power sup 0.00 Volt
Phone Off
0Hz
Power sup 3.80 Volt
Phone Off
0.00V
0.00V
0.00V
0.00V
0.00V
0.00V
Power sup 3.80 Volt
Phone On
32.768kHz
Power sup 3.80 Volt
Phone On
2.6V
2.5V
1.8V
2.7V
2.7V
2.6V
Power sup 3.80 Volt
VCORE18 from N2202
Voltages from N2000
MP
MP 158 (ST2217)
MP
MP 56 (ST2206)
MP 12 (ST2215)
MP 7 (C2218)
MP 22 (ST2210)
VCORE18
VCORE12
VccA
VDD_LP
VBACKUP
Phone Off
0.00V
Power sup 0.00 Volt
0.00V
0.00V
2.2V
2.2V
Power sup 0.00 Volt
Phone On
1.8V
Power sup 3.80 Volt
Phone Off
0.00V
0.00V
2.2V
2.2V
Power sup 3.80 Volt
Phone On
1.2V
2.8V
2.2V
2.2V
Power sup 3.80 Volt
Memory Card
C2217
Completely charged
Memory Card inserted and Combo Reader connected to the PBA
MP
MP 16 (ST2202)
Power sup 3.80 Volt
WCDMA N1210
VMC28
Use Fault Trace SW to activate and deactivate WCDMA Radio
Phone Off
0.00V
MP
MP 84 (L2207)
MP 83 (R2221)
MP 81 (R2220)
MP 12 (ST2215)
MP 9 (ST2208)
Power sup 3.80 Volt
Phone On
2.8V
VCC_WPA
WPAVCC
DCDC_EN
VccA
VDDE18
WCDMA Radio Off
0.00V
0.00V
0.00V
2.8V
1.8V
Red LED V2428
WCDMA Radio On
3.4V
1.4V
1.8V
2.8V
1.8V
Use Fault Trace SW to activate and deactivate Red LED
MP
MP 128 (C2427)
Power sup 3.80 Volt
Bluetooth N1400
REDLED
Use Fault Trace SW to activate and deactivate Bluetooth
REDLED Off
0.00V
MP
MP 147 (ST1404)
MP 143 (C1408)
MP 146 (C1409)
MP150 (C1412)
MP 148 (R2118)
MP 21 (R2125)
Power sup 3.80 Volt
REDLED On
1.8V
VDIG
VDDE18
VBT27
VDDE18
BT_CLK
RTCCLK
Bluetooth Off
2.7V
1.8V
2.7V
1.8V
26MHz
32.768kHz
FM Radio N1400
Bluetooth On
2.7V
1.8V
2.7V
1.8V
26MHz
32.768kHz
Use Fault Trace SW to activate and deactivate FM Radio
MP
MP 151 (ST2282)
MP 154 (C3305)
MP 152 (R3301)
Power sup 3.80 Volt
Main Camera
VBATI
VDDE18
RTCCLK
Use Fault Trace SW to activate and deactivate Main Camera. Display and Main Camera module must be connected to the PBA
FM Radio Off
3.8V
1.8V
32.768kHz
MP
MP 76 (R2280)
MP 27 (TP2206)
MP 28 (TP2207)
MP 32 (TP2204)
MP 82 (ST2275)
MP 54 (TP2208)
MP 77 (R4301)
Power sup 3.80 Volt
FM Radio On
3.8V
1.8V
32.768kHz
CAM_LDO_EN
VCAMIO
VCAML
VCAMAF
VCAMSA
VCAMSD
CAMSYSCLK/MCLK
Main Camera Off
0.00V
0.00V
0.00V
0.00V
0.00V
0.00V
0Hz
Main Camera On
1.8V
1.8V
1.2V
2.8V
2.8V
1.8V
26MHz
VGA Camera
Use Fault Trace SW to activate and deactivate VGA Camera. Display and VGA Camera must be connected to the PBA
MP
MP 27 (TP2206)
MP 82 (ST2275)
MP 77 (R4301)
Power sup 3.80 Volt
VCAMIO
VCAMSA
CAMSYSCLK/MCLK
VGA Camera Off
0.00V
0.00V
0Hz
VGA Camera On
1.8V
2.8V
13MHz
Charging
Charging off 1:
DCIO/SEPI not
connected.
Charging off 2:
DCIO/SEPI connected.
Charging 100mA:
Use Fault Trace SW:
Start Current Calibration -
> Set VBATT to 3.8
Note: The Current
Calibration Test must be
repeated if current
consumption goes below
50mA at Power Supply
Channel 2 when you are
performing this
measurements.
Charging 800mA:
Use Fault Trace SW:
Start Current Calibration ->
Set VBATT to 3.8V ->
Perform Step1
Note: The
Current Calibration Test must
be repeted if current
consumtion goes below
725mA at Power Supply
Channel 2 when you are
performing this
measurements.
MP
MP 40 (C2201)
MP 47 (C2241)
MP 39 (V2202 Pin2)
MP 41 (R2201)
Power sup 3.8 Volt
DCIO
DCIO_INT
CHREG
CHSENSEP
Charging off 1
0.00V
3.6V
3.2V
3.8V
Charger voltage 0.0 Volt
Charging off 2
5.0V
4.7V
4.7V
3.8V
Charger voltage 5.0 Volt
Charging 100mA
5.0V
4.7V
4.7V
3.8V
Charger voltage 5.0 Volt
Charging 800mA
4.5V
4.4V
2.8V
4.2V
Charger voltage 5.0 Volt
VBUS
USB cable connected to PC
MP
MP 44 (ST2201)
Power sup 3.80 Volt
VBUS
USB Cable disonnected
from the phone
0.00V
USB Cable connected to
the phone
5.0V
MCLK 26MHz from N1200
MP
MP 149 (R2100)
MCLK
Phone Off
0Hz
Power sup 3.80 Volt
Phone On
26MHz
Power sup 3.80 Volt
SEMC Troubleshooting Manual
24
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