User Guide

Technical Documentation
NHB–3
PAMS
Troubleshooting
Original 26/97
Page 9
Display Selftest Failed
Display selftest failed or
MCU internal test
MCU audio codec
YES
NO
test: failed
MCU RAM bus test
YES
phone doesn’t registrate to
the system (tester)
Use PCLocals to
find out a reason
MCU IMEI test
MCU ROM bus test
Unprogrammed FLASH
Unconnected pins in MCU
address or data lines
MCU DSP code
download: failed,
DSP tests: no responce
RFI bus fault
NO
YES
Codec N260/pin 12 : PCMDO
Codec N260/pin 13 : PCMDI
Codec N260/pin 19 : PCMCLK
Codec N260/pin 20 : XSELPCMC
DSP clock oscillator
DSP pin 45/INT1
DSP pin 10/ERAMHI
DSP pin 9/IOX
DSP pin 12/EROM
DSP pin 14/RWN
DSP pin 15/RWN
DSP pin 39/RSTB
RFI/RFIAD 3:0
RFI/RFIDA 11:0
RFI pin 49/RDX
RFI pin 50/WRX
RFI pin 53/RFICLK
RFI pin 59/RFI2CLK
DSP RAM D210, D211
DSP/DSPDA
DSP/DSPAD