Nokia NME-2A Series - Flash Programming OK; Part 2

P.A.M.S.
Technical Documentation
NME–2A
Troubleshooting Instructions
Page 7
Original 08/97
Flash Programming OK; part 2
MCU/D250/pin 10
RESETX +5 V after
power on?
26 MHz clock
D300/pin 119?
Change D300
Check components
D301, D302, C306
R913, G902, C918
26 MHz at MCU
/D250 pin 69
/MCUCLK?
MCU/D250
/pin 8/MD2,
/pin 9/STNDBY?
MCU/D250/pin 43
/XPWROFF pulses up to
+5 V after pwr on?
NO
YES
YES
MCU/D250/pin 77
/IRQ0 +5 V after
power on?
MCU/D250/pin 4
/WSTROBEX +5 V
after pwr on?
Change D300
Check joints
and foils
Change D250
Change D300
Check D300
Check all soldered joints
The data and address signals must
a clear difference between low (0 V)
and high (+5 V)
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
2
YES