Motorola APX 1000 Detailed Service Manual page 50

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3.2.1.1 Main Controller Components and Connections
3.2.1.1.1 Main Board Controller section
The controller section contains the Class D internal audio power amplifier, OMAP1710 dual-core
processor, FLASH and SDRAM memory, Audio circuitry (MAKO and CODEC IC's), a Complex
Programmable Logic Device (CPLD), and interfaces to the other components in the controller
design.
Connectors
• Keypad – J2301, J2302
3.2.1.1.2 Keypad Board
The keypad board contains the AVR controller IC for Bluetooth 2.1 and support circuitry, a 3-axes
digital accelerometer, a Type III encryption IC, and connector interfaces to the frontkit flex. The
keypad board features a 3x2 Menu keypad with 4-way navigation button, a 3x4 alphanumeric
keypad, or a 3x1 Menu keypad.
Connectors
• Main Board – P2001, P1000
• Frontkit flex – P2000
3.2.1.1.3 GCAI Flex
The GCAI flex contains a Bluetooth antenna, Audio Mic, TX/RX LED that is solid amber upon
receive, red on PTT and blinking amber on receive, status LED, and audio mic and a connector to
interface with the frontkit flex. The flex comes with components for ESD protection. For APX 2000/
APX 4000 (Two Knobs), the GCAI flex also contains connector to E-Button flex.
3.2.1.2 Front kit Flex
APX 2000/ APX 4000/ APX 4000Li: The front kit contains a speaker, multifunction rotary knob,
connectors to the front display, GCAI flex, side control flex and keypad board. The multifunction
rotary knob is used for ON/OFF volume and channel/frequency.
APX 2000/ APX 4000 (Two Knobs): The front kit contains a speaker, an On/Off &Volume Knob, a
16-position Channel/Frequency Switch, connectors to the front display, GCAI flex, side control flex
and keypad board.
3.2.1.2.1 Front Display
The Front Display is a TFT transflective color LCD, 160 pixels x 90 pixels with a white backlight. The
display connects through a flex directly to a 22-pin connector located on the frontkit flex.
3.2.1.2.2 Data-Side Microphone
The data-side microphone is mounted on the front chassis and connects directly to the Main board
through a set of pogo pins mounted on the Main board.
3.2.1.2.3 Side Controls Flex
The side controls flex contains the PTT, Side Top button, Side Middle button and Side Bottom
button.The flex connects to the frontkit flex through a 10-pin connector.
3.2.1.2.4 Audio-Side Microphone, Speaker, and Bluetooth Antenna
The audio-side microphone and Bluetooth antenna is located on the GCAI flex and connected to
Frontkit flex. The speaker assembly is located on the Frontkit flex.
Theory of Operation
: Controller