Nokia NME-2A Series - Flash Programming OK; Part 4

P.A.M.S.
Technical Documentation
NME–2A
Troubleshooting Instructions
Page 9
Original 08/97
Flash Programming OK; part 4
4
D251/FLASH
YES
NO
/pin 11 +12 V during
programming?
D250/MCU
/pin 64/RXD2 pulses
during programming?
Check X100/pin 14
R271, L250, R264
NO
NO
YES
YES
Check X100/pin 6
R252, R253, R255
X100/pin 7
/TXD2 pulses during
programming?
Check D250/pin 63
R250, R251, C250
D251/FLASH
/pin 12/PWD +5 V
after power on?
NO
Check D300
D251/FLASH
/pin 9/ROMSELX pulses
from +5 to 0 V after
power on?
NO
Check D250 (D300)
YES
YES
D251/FLASH
/pin 37/RSTROBEX pulses
from +5 to 0 V after
power on?
NO
Check D250 (D300)
D251/FLASH
/pin 38/WSTROBEX pulses
from +5 to 0 V after
power on?
NO
Check D250 (D300)
Check D251/FLASH
ADDRESS/DATA LINES
/no shortcircuits or
unconnected pins allowed
Change D251
OK
YES
R265, C264
C254