User Guide

NPE-3
Baseband Trouble shooting PAMS Technical Documentation
3DJH 1RNLD0RELOH3KRQHV/WG ,VVXH
Flash programming doesn’t work
If fault information from Prommer is:
a) MCU doesn’t boot
b) Serial dataline failure
c) Serial clock line failure
Connect J102 (WDDIS) to GND.
No
Yes
J108 (VBB) = 2.8V
J105 (VXO) = 2.8V
See section: (2)
See section: "Phone is dead"
No
J101 (PURX) = "1" (2.8V)
after 60ms
Yes
Check J112 (SLEEPCLK)
= 32KHz square wave
Check sleepclock
circuit:
B110, R111,...
Faulty N102 CCONT
or overloaded PURX line
No No
Yes
Check buffer: V600, R607,...
V600 coll. (RFC)
= 13MHz clock, 200mVpp min.
Check G602
VCXO 26MHz
Yes
Yes
No
Faulty N500 HAGAR
Ok
Check D302
Faulty D301 MAD2
or D311 Flash
Ok
Ok
Faulty PCB
No
Yes
Flash programming (1)
Check the following lines:
M-BUS: X002 pin 3 -> X001 pin 11 -> V170 pin 1
FBUS_RX: X002 pin 2 -> X001 pin 12 -> V171 pin 3
FBUS_TX: X002 pin 1 -> X001 pin 13 -> V171 pin 1
GND: X002 pin 7 -> X001 pin 14 -> GND
Check also pull-up and -down resistors: R172, 305, 306