CDR-1000 (250-1077) Pinouts Faxback Doc. # 5269 Data Cable pinouts (40 Pin header) Audio Cable pinouts (4 pin header) 1. HA0 2. GND 1. Right Channel Audio 3. HA1 4. GND 2. GND 5. N/C 6. GND 3. Left Channel Audio 7. N/C 8. GND 4. GND 9. N/C 10. GND 11. N/C 12. GND 13. IRQ 14. GND Power Connector (4 pin Molex) 15. DRQ 16. GND 17. DACK* 18. GND 1. +12 V 19. IOR* 20. GND 2. GND 21. IOW* 22. GND 3. GND 23. ENABLE* 24. GND 4. +5 V 25. HD0 26. GND 27. HD1 28. GND 29. HD2 30. GND 31. HD3 32. GND 33. HD4 34. GND 35. HD5 36. GND 37. HD6 38. GND 39. HD7 40. GND * = Active low signal N/C = Not Connected GND = Ground (dtc-08/02/93)