Specifications

Troubleshooting 310/360 Power-On Self Test - 7
310/360 Power-On Self Test
The LaserWriter Select 310 and 360 go through a self diagnostic
each time that you switch the printer on. This diagnostic is called
the Power-On Self Test (POST). POST does not occur on the
LaserWriter Select 300 printer.
Note: This test is not the same as the engine diagnostic (see next
topic). Unlike the engine diagnostic test, POST does not require
the placement of any loopback cable.
Observing how the LEDs extinguish from that point can help
isolate certain failure areas.
• The Ready LED extinguishes when no errors are found on the
I/O controller board.
• The Paper-Out LED then extinguishes when no errors are found
on the RAM card.