K850
1203-2528 rev. 1
TROUBLESHOOTING Reference Measurement Points
TROUBLESHOOTING
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
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