Fm Radio Test; Input Signals To Fm Radio - Nokia RM-11 Series Troubleshooting Manual

RM-11
Troubleshooting - Baseband
While write/read is low, data can be read by the UPP. At the rising edge of the BUS Clock,
data is shifted out of the register. This data is available from the point where the bus
clock is high until the next rising edge of the clock occurs.
The stereo audio output signals are fed to the stereo amplifier. Volume control of the FM
audio signal is made by circuitry inside the amplifier. The amplified audio signal is fed to
the headset or IHF speaker. The headset is also used as the antenna input for the radio.

FM Radio Test

To hear the FM radio, you first connect the headset to the Pop-port
because the headset is an FM radio antenna. Connect the headset to the UHJ port to
control the FM radio by using Phoenix. If you connect a headset (such as an HDS-3) to
the Pop-port
TM
already occupied the connection port (Pop-port
jumper wires on production test points (Fbus Tx/Rx,GND).

Input Signals to FM Radio

After connecting a headset to the UHJ port to control the mobile terminal through
Phoenix, you can see the following signals by turning on the FM radio in Phoenix.
• FMClk = Test Point (FM04) : 32 KHz/1.8 V
• FMWrEn = Test Point (FM03) : Write enable at 1.8 V
• FMCtrlClk = Test Point (FM02) : Control clock at 1.8 V
• FMCtrlDa = Test Point (FM01) : Control data at 1.8 V
©2005 Nokia Corporation
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connector, you cannot control the mobile terminal because you have
Figure 16: FM Radio signals before Radio on
CC Technical Documentation
), so in this case you have to have
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Confidential
or UHJ ports
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Issue 2 09/2005