Infrared Does Not Work; Fig 13 Fault Tree, Infra Red - Nokia NPM-2NX Troubleshooting Manual

CCS Technical Documentation

Infrared does not work

Infra Red not working
Measure Vflash1 from IR
module VCC(pin6), should
be 2.78V
Check R350, R351, C351
and V350
ST_IR_LOOP_TEST(in
BB Self Tests) in Phoenix
FAIL
Measure Tx Data from
IR module(pin3)
2.78V, 9.6/115.2kbps
UPP or UEM is faulty
Issue 1 07/02
Fault tree, infra red
Figure 13:
FAIL
OK
FAIL
OK
Use
OK
Measure Rx Data from
OK
IR module(pin4)
OK
Change UEM
ãNokia Corporation
Change
UEM(D200)
Replace faulty
component(s)
Use
ST_IR_IF_TEST(in
BB Self Tests) in
Phoenix
FAIL
OK
FAIL
Change IR module
NPM-2NX
Troubleshooting
Phone OK
Page 25