HP Designjet 230 Service Manual - Page 137

What You Should See and Hear The sequence given below is what should happen when you turn on the plotter in normal operating mode. CAUTION To observe movement of internal mechanisms, you can keep the cover switch pressed, while the cover is open. However, in doing so, do not block the path of the cartridge carriage with anything you stick into the coverĆswitch area. The possible states of any LED are: Off On Flashing ? Can be On or Off 1 All frontĆpanel LEDs flash together twice; the second flash is very short. 2 If a firmware ROM SIMM is installed in the plotter, the following will occur: 230 250C The LEDs light up one by one as follows, until eight LEDs are on. This happens three times. 330 350C The LEDs light up one by one as follows, until all nine LEDs are on. This happens several times throughout the initialization procedure. C4699Ć90000 Troubleshooting 8Ć3