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Additional Hard-drive Power Connector
J7 Connector Pinout Models 25, 25SX and 25-286
P3 / P4 Connector Pinout Model 30 and 30-286
Power Good
J7 Connector Pinout Models 25, 25SX and 25-286
(Pin 1 to rear of system)
|
| -Lead Pin |
+Lead Pin |
V dc Min |
V dc Max |
| P7-5 |
P7-10 |
+ 4.8 |
+ 5.2 |
| P7-9 |
P7-5 |
+ 4.5 |
+ 5.4 |
| P7-5 |
P7-3 |
+11.5 |
+12.6 |
| P7-4 |
P7-8 |
+10.8 |
+12.9 |
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P3 / P4 Connector Pinout Model 30 and 30-286
(Pin 1 to rear of system)
|
|
| -Lead Pin |
+Lead Pin |
V dc Min |
V dc Max |
| P3-5 |
P4-4 |
+ 4.8 |
+ 5.2 |
| P4-3 |
P3-6 |
+ 4.6 |
+ 5.5 |
| P4-1 |
P3-3 |
+11.5 |
+12.6 |
| P3-4 |
P4-2 |
+10.8 |
+13.2 |
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The manually-switchable power supply must be switched to either the
100-125 Vac or the 200-240 Vac range before the power cord is plugged into
an outlet. The ac input is converted to dc outputs that supply the
system with the proper operating voltages.
When the system is powered-off for five seconds or more and then powered-on,
the power supply generates a 'power good' signal that resets system logic.
The presence of the 'power good' signal indicates that the power supply
is operating properly and that the minimum under-voltage sense levels have
been established. This means that all system-board power requirements
have been met.
Output
(Vdc) |
Minimum Under-Voltage
Sense Level (Vdc) |
| + 5.0 |
+ 4.5 |
| - 5.0 |
- 4.3 |
| +12.0 |
+10.8 |
| -12.0 |
-10.2 |
Once the minimum under-voltage sense levels are established and the
'power good' signal has risen to its active level, all system board power
requirements have been met and the power-on self-test begins.
Power Good
Power Good should read +3.5 to +5 V when system is operating
correctly. If it is not, remove all adapters, cables, and extra memory
then try again. If power good is now valid, a device was causing a short.
Install adapters one at a time and retest. The bad device will prevent
power good from coming up.
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