APPENDIX
Connector | Pin | Abbreviation | I/O | Logic | Signal name |
J220 | A1 | TRFVCNT | O | ANALOG | TRANSFER BIAS CONTROLL signal |
| A2 | TRFVSNS | I | ANALOG | TRANSFER BIAS MONITOR signal |
| A3 | /TRFCCD | O | L | TRANSFER BIAS CONSTANT CURRENT DRIVE signal |
| A4 | TRFCLK | O | P | TRANSFER BIAS FREQUENCY OUTPUT signal |
| A5 | N.C. |
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| A6 | HVTCLK | O | P | |
| A7 | /DEVACD | O | L | DEVELOPING AC BIAS DRIVE signal |
| A8 | DEVACCLK | O | P | DEVELOPING AC BIAS FREQUENCY OUT PUT signal |
| A9 | /DEVDCD | O | L | DEVELOPING DC BIAS DRIVE signal |
| A10 | TONSNS | I | ANALOG | TONER LEVEL signal |
| A11 | 24VGND |
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| A12 | 24VB | O |
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| B1 | /TRFNVD | O | L | TRANSFER NEGATIVE BIAS DRIVE signal |
| B2 | /HRLBD | O | L | FIXING ROLLER BIAS DRIVE signal |
| B3 | /DCHGBD | O | L | DISCHARGE BIAS DRIVE signal |
| B4 | /DCHGUP | O | L | DISCHARGE BIAS SWITCH signal |
| B5 | N.C. |
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| B6 | N.C. |
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| B7 | PRIACCLK | O | P | PRIMARY AC BIAS FREQVENCY OUTPUT signal |
| B8 | /PRIACD | O | L | PRIMARY AC BIAS DRIVE signal |
| B9 | /PRIDCD | I | L | PRIMARY DC BIAS DRIVE signal |
| B10 | DENADJ | O | ANALOG | IMAGE DENSITY AD JUSTMENT signal |
| B11 | 24VGND |
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| B12 | 24VB | O |
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J221 | 1 | +24VB | I |
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| 2 | +24VB | I |
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| 3 | +24VB | I |
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J222 | 1 | TSWOUT |
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| 2 | FSRTH | I | ANALOG | FIXING ROLLER TEMPERATURE SENSE signal |
| 3 | GNDTH |
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| 4 | TSWIN |
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J223 | 1 | TONSNS | I | ANALOG | TONER LEVEL signal |
| 2 | GND |
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J225 | 1 | FAN4D | O | H | FAN MOTOR 4 DRIVE signal |
| 2 | /FAN4S | I | L | FAN MOTOR 4 ROTATING DETECTION signal |
| 3 | 24VGND |
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| 4 | GND |
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J229 | 1 | FAN5D | O | ANALOG | FAN MOTOR 5 DRIVE signal |
| 2 | /FANS5 | I | L | FAN MOTOR 5 ROTATING DETECTION signal |
| 3 | 24VGND |
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| 4 | 24VGND |
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A - 9
