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BT-ANT; When Bluetooth receiving, Bluetooth RF signal comes from BT-ANT via U7 and U13 then
changes to voice signal from U13 Pin 4 output.
ATIS(Automatic Transmitter Identification System) ONLY for HH475EU
ATIS circuit consists of U5(1/4),U4(4/4) and CPU U7, when receiving the AF signal from U1 Pin 9 via
U5(1/4) then pass to CPU U7 Pin 43, when transmitting AITS PWM signal form U7 Pin 45 output then via
U4(4/4) pass to TX VCO Varicap D11 then mixes with the carrier to form the modulated signal.
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Summary of Contents for MR HH475 FLT BT/EU
Page 11: ...WIRING DIAGRAM 11 ...
Page 12: ...PRINTED CIRCUIT BOARD Main PCB Top View VR2 VC1 12 ...
Page 13: ...PRINTED CIRCUIT BOARD Main PCB Bottom View L18 L20 13 ...
Page 14: ...PRINTED CIRCUIT BOARD Cradle Charger PCB View Top View Bottom View 14 ...
Page 16: ...EXPLODED VIEW for HH475 Main Part 16 ...
Page 17: ...EXPLODED VIEW for Battery and Antenna 17 ...
Page 54: ...U4 U5 324 NJM V 54 ...
Page 60: ...U401 HT1621 DICE 60 ...