APPENDIX
III.LIST OF SIGNALS
A.Input/output signals to/from DC controller PCB
Connector | Pin | Abbreviation | I/O | Logic | Signal name |
J201 | A1 | GND |
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| A2 | GND |
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| A3 | /FPCS | I | L | OPERATION PANEL CONTROLLER CHIP SELECT signal |
| A4 | Reservrd |
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| A5 | /VSREQ | O | P | VSYNC REQUEST signal |
| A6 | /VSYNC | I | P | VERTICAL SYNC signal |
| A7 | /STS | O | L | STATUS signal |
| A8 | /CMD | I | L | COMMAND signal |
| A9 | /CPSEL | I | ANALOG | COMTROLLER POWER SELCT signal |
| A10 | /SPCHG | O | L | SPEED CHANGE signal |
| A11 | 3.3V | O |
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| A12 | 3.3V | O |
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| A13 | +5V | O |
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| A14 | +5V | O |
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| A15 | GND |
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| A16 | GND |
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| B1 | GND |
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| B2 | GND |
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| B3 | /FPO | O | L | OPERATION PANEL SERIAL OUTPUT signal |
| B4 | Reserved |
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| B5 | /RDY | O | L | READY signal |
| B6 | /CPRDY | I | L | CONTROLLER POWER READY signal |
| B7 | /SBSY | O | L | STATUS BUSY signal |
| B8 | /CBSY | I | L | COMMAND BUSY signal |
| B9 | /PRFD | I | L | |
| B10 | /PFED | O | L | PAPER FEED signal |
| B11 | 3.3V | O |
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| B12 | 3.3V | O |
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| B13 | +5V | O |
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| B14 | +5V | O |
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| B15 | GND |
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| B16 | GND |
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| C1 | VDO | I | H | VIDEO signal |
| C2 | /VDO | I | L | VIDEO signal |
| C3 | /FPI | I | L | OPERATION PANEL SERIAL INPUT signal |
| C4 | FPCK | I | P | OPERATION PANEL SERIAL CLOCK signal |
| C5 | /PPRDY | I | L | PRINTER POWER READY signal |
| C6 | /PRNT | I | L | PRINT signal |
| C7 | /PCLK | O | P | PRINTER CLOCK signal |
| C8 | /CCLK | I | P | CONTROLLER CLOCK signal |
| C9 | /CCRT | O | L | CONDITION CHANGE REPORT |
| C10 | /PDLV | O | L | PAPER DELIVERY signal |
| C11 | 3.3V | O |
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| C12 | 3.3V | O |
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A - 5
