9533 Power

If the power-on indicator is not on, check the power cord for proper installation and continuity. (If the power-on indicator is not on, but the computer is functioning normally, replace the power switch/speaker assembly.) 

Check for continuity between pins 4 and 6 (switch) on P2. 
If the switch is OK, short pin 4 to pin 6 on P2 and check the power supply voltages. 

 
+Lead Pin
-Lead Pin
Vdc Min
Vdc Max
1, 2 (+.5 volts)
Ground
3.75
+6.25 
3, 4 (Ground)
Ground

 
+Lead Pin
-Lead Pin
Vdc Min
Vdc Max 
1, 2 (+12.0v)
Ground
+ 9.0
+15.0 
3 (Power Good)
Ground
+ 2.4
+ 5.25 
4 (On/Off Signal)
Ground
+ 1.0
5 (-12.0v)
Ground
- 9.0
- 15.0
6 (Ground)
Ground
7 (-5v)
Ground
-4.75
- 5.5

 
 +Lead Pin
-Lead Pin
V dc Min
V dc Max
1 (Ground)
Ground
 
 
2, 3 (+5v)
Ground
+3.75
+6.25

9533 Planar

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