NSB-9
Troubleshooting Instructions
CCS Technical Documentation
Page 50
Nokia Corporation
Issue 1 04/03
Signal Name
Function
Test Point
Signal Characteristics
Notes
FBUS_TX
Flash programming data and phone
control
PRODTP2
2.8-0V, digital signal
From phone to prommer or PC
FBUS_RX
Flash programming data and phone
control
PRODTP3
2.8-0V, digital signal
From prommer or PC to phone
MBUS
Flash programming clock and phone
control
PRODTP7
2.8-0V, digital signal,
clocks up to 6.5MHz
Bidirectional phone control
BSI
Flash programming startup
signal,battery size indicator, local
mode switch, SIM card detection
Battery
connector
and J101
2.8-0V, analog AD-
converter and digital signal
2.8V pulse when flashing starts, approx. 1.0V
in normal mode and 0V in local mode
VPP
Flash programming voltage
PRODTP6
1.8V, up to12V during
flash programming
Internal programming voltage 1.8V , external
12V
VR1A
Power supply for Hagar PLL charge
pump
C600 4.75
V
VR2
Power supply for TX modulator
C706
2.8 V
VR3
Power supply for VCTCXO
C662
2.8 V
Controlled by SLEEPX signal
VR4
Power supply for Hagar
C601
2.8 V
VR5
Power supply for Hagar
C603
2.8 V
VR6
Power supply for Hagar
C605
2.8 V
VR7
Power supply for VCO
R652
2.8 V
Signal Name
Function
Test Point
Signal Characteristics
Notes
VSIM
Power supply for SIM card
C390/conn.
1.8 or 3.0V
Level depend on SIM card type
SIMRST
SIM reset
C387/conn.
digital signal
Level depend on SIM card type
SIMIODAO
SIM data
C386/conn.
digital signal
Level depend on SIM card type
SIMCLKO
SIM clock
C388/conn.
3.25 MHz digital clock
signal
Level depend on SIM card type
SLEEPX
Sleep mode control
J403
1.8-0V, digital signal
PURX
Power up reset
J402
1.8-0V, digital signal
SLEEPCLK
Sleep clock
J404
1.8-0V, 32 kHz digital
clock signal
Signal Name
Function
Test Point
Signal Characteristics
Notes
VBATTO_1
Power supply for VANA,VR3,VR4
and VR7 regulators
C260 =
VBAT
VBATTO_2 Power
supply
for
VFLASH1,VFLASH2 and VSIM
regulators
C261 =
VBAT
VBATTO_3
Power supply for VCORE regulator
C262
= VBAT
VBATTO_4
Power supply for VR1A,VR1B and
VR2 regulators
C264 =
VBAT
VBATTO_5
Power supply for VR5 and VR6
regulators
C263 =
VBAT
VBATTO_6
Power supply for VIO regulator
C265
= VBAT
RFCLK
System clock for baseband
C420
13 MHz analog signal
Requirement > 0.3 Vpp
RF_BUSDA
Hagar control serial data
J2
0 -1.8V, digital signal
RF_BUSCLK
Hagar control serial clock
J3
0 -1.8V, 13 MHz digital
clock signal
Signal Name
Function
Test Point
Signal Characteristics
Notes
CBUSCLK
Serial clock
J406
1.8-0V, 1MHz digital clock
signal
Controlled by MCU
CBUSDA
Serial data input/output
J407
1.8-0V, digital signal
Controlled by MCU
