IBM DPSS-309170 Installation Manual - Page 10

IBM storage products Driving an LED To drive a Light Emtting Diode (LED) tie the LED Anode to pin 1 of option block J4. Tie the LED Cathode to pin 2 of option block J4. Using the following illustration make the connections as indicated. Tie pin 2 of J4 to pin 8 of the Auxiliary connector on the 68 pin model or to pin 77 of the 80 pin connector on the 80 pin model using the 150 Ohm resistor as indicated. This feature does not require the use of a jumper. 68pin +5V 150 Ohms Positions #1,#2 on J-4 Jumper Block (pin 1 of J-4) to LED Anode (pin2 of J-4) to LED Cathode 80pin +5V +5V 620 Ohms 150 Ohms (on board) LED Positions #1,#2 on J-4 Jumper Block (pin 1 of J-4) to LED Anode (pin2 of J-4) to LED Cathode 150 Ohms pin 8 of AUX connector pin 77 of 80pin connector 0 Ohms The auxiliary connector on 68 pin models The 68 pin models contain an auxiliary connector. This connector conforms to SFF 8009 Rev 3.0 and is typically used with a unitized connector found on external drive enclosures. The connector has a source for +5 V dc (pin 11) and a connection (pin 8) for an LED cathode. Auxiliary Connector : : : : : : ID2 ID0 +5V ID3 ID1 11 9 7 5 3 1 12 10 8 6 4 2 Reserved Ground Reserved LED Cathode IBM Technology Group Support Center Page 10 07N5612IG10