User Guide

RH-26
7 - Troubleshooting Instructions CCS Technical Documentation
Page 42 ©Nokia Corporation Issue 1 02/04
Hall sensor output is 2.78V when the flip is closed, 0V when open. Output is connected
to the UEM via SLOWAD(2) KEYB1 line.
If the flip is not recognised, check:
• N301/pin 3 output = 0V.
• N301/pin 1 = 2.78V. If not check R309.
• Bring the magnet close.
• If the pin 3 does not go up, change the Hall sensor N301.
Figure 25: Location of hall sensor
IR
The infrared module N350 is connected to the UPP through IACCDID(0,1) line and
GENIO(24) line. TxD and SD are active when high, while RxD is active when low. All IR
related components are under the UPP shielding except the IR module itself.
Figure 26: IR Signals
Bluetooth
All bluetooth functions are integrated into a single chip, only a few external components