Xerox 4540 Service Manual - Page 241
D.9 Backplane To Disk Backplane Connector
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D.9 Backplane To Disk Backplane Connector The backplane to disk backplane connector has eight blades that support 30 amps each. It also has 30 signal pins. See TABLE D-13 for the blades and TABLE D-14 for the signal pins. TABLE D-13 Backplane-to-Disk-Backplane Connector Power Blades Pin Blade 1 Blade 2 Blade 3 Blade 4 Blade 5 Blade 6 Blade 7 Blade 8 Function +12V GND +12V GND +12V GND GND GND TABLE D-14 Backplane-to-Disk-Backplane Connector Signal Pins Pin Pin Name Pin A1 3.3V AUX C1 A2 GND C2 A3 VDD_RTC C3 A4 INTRUSION_SW C4 A5 PS2_ENABLE_L C5 A6 PS2_VIN_GOOD_L C6 A7 PS2_POWEROK C7 A8 PS2_FAIL C8 A9 PS2_FAN_FAIL_L C9 B1 3.3V AUX D1 B2 GND D2 B3 PS0_FAN_FAIL_L D3 Pin Name .3V AUX GND SP_I2C_CLK SP_I2C_DAT PS2_BATT_L PS0_POWEROK PS1_FAN_FAIL_L PS1_POWEROK PS1_PRESENT_L 3.3V AUX GND 3_3_AUX_SENSE_P Appendix D Connector Pinouts D-15