KX-FT982CA, KX-FT984CA, KX-FT988CA - Panasonic Fax Service Manual (repair manual). Page 13

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The following is an outline of each device IC on the digital board. (Refer to General Block Diagram (P.14).).

1. ASIC (IC1)

Composed mainly of an address decoder and a modem control.
Controls the general FAX operations.
Controls the operation panel I/F.
Controls the thermal head I/F and CIS I/F.
Performs the image processing.
CPU and Real time clock
Provides the reset pulse for each of the major ICs. 

2. Flash ROM (IC2)

Contains all of the program instructions on the unit operations.
This memory is used mainly for the parameter working in the storage area.

3. Dynamic RAM (IC4)

This memory is used mainly for the parameter working in the storage area.

4. MODEM (IC5)

Performs the modulation and the demodulation for FAX communication.

5. Read Section

CIS image sensor to read transmitted documents.

6. Motor Driver (IC7)

Drives the transmission motor and the reception motor.

7. Thermal Head

Contains heat-emitting elements for dot matrix image printing.

8. Sensor Section

Composed of a cover open, a document set switch, a document top switch, a paper sensor switch, a jam sensor switch, and
a hook sensor switch.

9. Power Supply Board Switching Section

Supplies +6V and +24V to the unit.

10. Flash MEMORY (IC6) (KX-FT988 only)

Voice Prompt (TAM) D/L (DownLoad) area.