5.0 Power Supply Voltages / Fan
If the fan is not running, check the fan connector for -9.0 to -15.0 Vdc,
approximately -12 Vdc desired. If the voltage is correct, replace the
fan. If the voltage is not correct, check the power supply voltages.
PICTURE 2
Remove the power supply and place it with the connector facing up.
Power-on the power supply and check for the voltages listed below. If the
voltages are not correct, check the power cord for continuity. If the
power cord is good, replace the power supply.
+------------------------------------------------------------------------+
¦ Vdc ¦ Vdc ¦ -Lead ¦ +Lead ¦
¦ Minimum ¦ Maximum ¦ Pin ¦ Pin ¦
+---------+---------+---------+------------------------------------------¦
¦ ¦ ¦ ¦ ¦
¦ -9 ¦ -15.0 ¦ 2 ¦ 1 ¦
¦ +9.0 ¦ +15.0 ¦ 2 ¦ 3 ¦
¦ +3.7 ¦ +6.2 ¦ 2 ¦ 15 ¦
¦ ¦ ¦ ¦ ¦
+------------------------------------------------------------------------¦
+------------------------------------------------------------------------+
PICTURE 3
IBM PS/2 Model 50 HMS
Power Supply Voltages / Fan
5.0 - 1
Summary of Contents for PS/2 50
Page 18: ...8 0 Display Adapter 8514 A PICTURE 4 IBM PS 2 Model 50 HMS Display Adapter 8514 A 8 0 1...
Page 28: ...IBM PS 2 Model 50 HMS Symptom to FRU Index 12 0 7...
Page 29: ...13 0 System Overview PICTURE 6 IBM PS 2 Model 50 HMS System Overview 13 0 1...
Page 35: ...Printed in the United States of America IBM PS 2 Model 50 HMS Parts 15 0 4...
