IBM 3274 51C Maintenance Information page 163

OlG(Tl) No.7
P3 From Figure B-l
Ret
2 100V
3 11(,v'
To Diode CR·l
GND
4
120V
5
/
01l·E1
Notes:
(Note 2) 120Vac
(Note 1)
Power
Transformer
01G
Gnd
AC Ret
No.8
1. Fan ground wire exists only with me tal·h
0
using fan.
2. Fan always connects to 0IG(Tt) -
1 & 4
(120V) foral!
values of line voltage.
100-127V Dual TSR Machine (World Trade)
Oll
Fan Assembly
Figure B-6 (part 2 of 2). Transformer Input and Fan Voltage Wiring (World Trade)
PN 1828817
Appendix B. Power Supplies B-9