Firmware System Block Diagram; 5215-304 Digital Voice Module; 7117441000 Digital Reverb Board - Viscount C-440 Manual

Firmware System Block Diagram
A Firmware System Block Diagram is provided to aid in the understanding of instrument
operation. It is presented in a similar form to an electronic schematic diagram. It is for reference
only and represents the state of Rodgers part number 4003-550.-
The C-440, C-445, and C-505 are manufactured with firmware named 4003-103. The 441,
550, 580, and 685 are shipped with firmware named 4003-550. 4003-550 is an enhanced version of
4003-103 and will work in all models. Model configuration jumpers are located on the OUTPUT
PREAMP 4-CH Board assembly ( 5218-301 ). The firmware uses these jumpers and other tests to
determine model number.
The C-445E firmware is configured for different sounds and therefore is not compatable with
the other organs.
5215-304 Digital Voice Module
The only parts on this module which are field servicable are the Program and Sample ROMs.
7117441000 Digital Reverb Board
The digital Reverb Board is not field serviceable but rather field replaceable.
Hardware - Wire Trap Connectors
Many of the interconnect systems in these models use a connector many technicians may not be
familiar with. These connectors allow special Top Coated ( looks like tinned ) ribbon cable to be
plugged directly into the connector. The wire is locked in place unless the connector release latch is
depressed. This connector is very cost effective and reliable. Caution must be used when inserting
the cable into the connector. Make sure that all wires are correctly aligned with their respective
holes. Pay particular attention that pin one on the wire (marked with a blue stripe) is inserted into
pin one of the connector (marked on the PCB silkscreen with a triangle). Depress the release bar
when inserting or releasing the cable.
Classic Keyboard Organ Service Notes
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