Section 300-Installation Chapter 2. System Overview576-13-300 DBS 576 (USA), issued 6/2/98 2-9CPC576 card (VB-444301)The CPC576 card is a high-performance CPU unit for system with up to 576 ports. A32-bit CPU is incorporated.The CPC576 card provides a 4-circuit MFR (DTMF receiver circuit), an inputterminal for music on hold tone source (RCA jack), an interface connector for PCM-CIA (PC card interface connector) and modem (300 bps) functions.This card requires the use of the TSW576 card (VB-444302).Memory is retained with a backup battery. (See “Replacing the Backup Battery ofCPC card” on page 6-29 for more information on battery replacement.)The system control program is downloaded to the internal memory of the systemthrough the PC Card (VB-44431). The PC Card is also necessary during normaloperating time (do not remove the PC Card).Note: J7 must be cut for the system to operate in Hybrid/PBX mode.Otherwise, the system will operate in Key mode.Figure 2-6. CPC576 cardCAUTION:• A replacement Single Inline Memory Module (SIMM) is providedthrough the service parts route. Panasonic does not take anyresponsibility if a SIMM, other than Panasonic service parts, or PC Card,other than VB-44431 is connected to the CPC576 card.
