Oki OF5300, Service Manual

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Service Manual for OF5300/5600
Chapter A Board Descriptions
CTR board is used as an interface board of PC and FAX when PC is connected to facsimile
machine.
1. Block diagram
CTR board circuit is formed by Receiver, Driver, and 1284-I/F.
Figure A3.12.1 shows related signals of CTR board.
2. Function
2.1 Summary
By installing the optional board (Bi-Centro), the following MFP (Multi-Function Peripheral)
function can be realized.
Example:
• PC printer function (300/Q600 dpi) 8PPM
• PC Scanner function 300 dpi
• PC Fax Modem function (TIA/EIA Class 1)
• PC Memory function
• PC Multiplex functionDisable Enable
Interface between Fax machine and Host PC consists of three layer structure as detailed
below, each sub-system can be operated at the same time by adopting a Oki-MFPI proto-col
in both Fax machine and Host PC.
a) Application layer:
Performs a function control of each sub-system at the Host PC and Fax machine.
b) Data-Link layer:
Performs a protocol control at the Host PC and Oki-MFPI (TIA IS650 Level 1 re-quirement).
(Packetize/Unpacketize, flow control, Transfers command/data between each sub-system)
c) Physical layer:
Has a bi-directional interface control circuit which conforms to IEEE1284.
Standard mode: Compatible, Nibble
Oki special mode: MCE (Mode Change Express)
Following devices are as sub-system:
1) Printer (HIPER-W: Host based Image PrintER for Windows)
Encodes a rater image data in Host PC and transfers a data with HIPER-W emula-tion.
2) Scanner (Oki-SCL 1: Oki-Scanner Control Language 1)
Transfers and image data of document scanned in Fax machine to the Host PC with