User Guide

PAMS
Technical Documentation
NSE–8/9
Troubleshooting
Page 9
Issue 1 07/99
B
Check that the following lines are OK:
FCLK (M–BUS) line: J102, X201 pin 3 –> C306
FTX (fbus_tx) line: J103, X201 pin 1 –> C314
FRX (fbus_rx) line: J104, X201 pin 2 –> C305
(value on all should be 100 ohm)
Check also pull–up and –down resistors: R309, R310, R311
GND: J100, X201 pin 7 –> GND
OK? Repair or defect PCB
MAD or FLASH faulty.
Yes
No
Check Service tool
TDS–7 & MJS–13
and
connections
Check that phone is
responding to flash
programming tool as
shown in fig. 4–3 to 4–5
Figure 4–4