PF768, Standard Electrical Repairs
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SIMCLK:
Clock signal from the processor used for communications with the
SIM.
SIMDAT:
Data signal from the processor used for communications with the SIM.
SIMRST:
Reset signal from the processor used for communications with the
SIM.
SIMVCC:
Feed voltage for the SIM.
SWDC:
Switched VBATT.
VANA:
DC voltage for the analogue part of the logic (N800).
VBATT:
Battery voltage.
VDIG:
DC voltage for the processor and memory.
VDSP:
DC voltage for the DSP (Digital Signal Processor).
VLCD:
DC voltage for the display that controls the contrast.
VRAD:
DC voltage for the radio part except the synthesizer.
VRPAD:
DC voltage for the radio part in D600 (also used for the top diode and
the buzzer).
VRTC:
DC voltage for the real time clock.
VSIMPAD: VDIG voltage that has been switched up to 5V used for SIM.
VVCO:
DC voltage for the synthesizer.
I
2
C:
Two line serial communications standard using one clock and one data
line.
LO:
Local oscillator.
PWM:
Pulse width modulation.
