Power Supply Linear Board

Photos

One of the two PSU boards, seems to be linear supplies for all the lower-current rails.

Connectors

J1

1. Type: 19-pin AMP Metrimate
2. Use: AC input voltages from transformer and line into PSU
3. From: Transformer and harness from Power Distribution Board
4. Pinout:
   1. To F1 Bottom (Sec. A 60VAC)
   2. To F2 Bottom (Sec. A 60VAC)
   3. To F3 Bottom (Sec. B 30VAC)
   4. To F4 Bottom (Sec. B 30VAC)
   5. To F5 Bottom (Sec. C 20VAC)
   6. To F6 Bottom (Sec. C 20VAC)
   7. To C2 + (Sec. C center tap)
   8. GND
   9. GND
   10. N/C
   11. Chassis Earth
   12. N/C ?
   13. 120VAC to Fan and J4-7
   14. N/C ?
   15. 120VAC to Fan and J4-1
   16. N/C ?
   17. N/C ?
   18. N/C ?
   19. To Thermal Cutout

J2

• Type: 2×3 Molex MLX
• Use: Power output
• From: TBD
• Pinout:
  1. +12VDC Out
  2. GND
  3. -12VDC Out
  4. GND
  5. GND
  6. -5.2VDC Out

J3

• Type: 3×3 Molex MLX
• Use: Power output
• From: TBD
• Pinout:
  1. -5.2VDC Out
  2. -5.2VDC Out
  3. To J4-5 (+5VDC Out?)
  4. +24VDC Out
  5. +24VDC Out
  6. N/C
  7. GND
  8. GND
  9. GND

J4

• Type: 3×3 Molex MLX
• Use: Power I/O between Linear Board and Switcher Board
• From: Switcher Board J1
  
• Pinout:
  1. 120VAC from J1-15
  2. To Case (collector?) of Q10
  3. +5.2VDC
  4. To Thermal Cutout
  5. To J3-3 (+5VDC in from switcher board?)
  6. GND
  7. 120VAC from J1-13
  8. N/C ?
  9. To Case (collector?) of Q5