Troubleshooting Solving Heater Problems "Power ON Heater Power Switch" appears on Heater Panel 1 Check that the Heater Power Cable is connected and that the heater Power Switch is switched On. 2 Replace the Heater Relay Assembly ⇒ Page 8-46 . 3 Replace the Heater Panel ⇒ Page 8-27 . Heater Does NOT become Hot 1 Try performing the Heater Test ⇒ Page 4-88 . If the Heater does not work during the test, try the following: „ Make sure that the Cable between the Heater Panel and the Heater Relay Assembly is connected correctly and NOT damaged. „ Make sure that the Heaters are connected correctly to the power voltage alternation switch. „ Replace the Heater Relay Assembly ⇒ Page 8-46 .
„ Replace the Heater Panel ⇒ Page 8-27 . 2 If the Heater does work during the Heater test, try the following: „ Make sure that ALL Heater Panel Cables are connected correctly to the Heater Panel. „ Make sure that the Heater Panel Cables are NOT damaged. „ Replace the Heater Panel ⇒ Page 8-27 . „ Replace the Main PCA ⇒ Page 8-35 . Abnormal Temperature is Displayed 1 Make sure that the Heater that is experiencing the abnormal temperature is installed correctly. Check that the Heater Cable is connected correctly. 2 Replace the Heater Panel ⇒ Page 8-27 . 3 Replace the Heater that is experiencing the abnormal temperature.
The Heater Temperature Becomes Extremely High 1 Make sure that the Heater that is experiencing the high temperature is installed correctly. Check that the Heater Cable is connected correctly. 2 Replace the Heater Panel ⇒ Page 8-27 . 3 Replace the Heater Relay Assembly ⇒ Page 8-46 . "Initializing" Continuously Appears on the Heater Panel 1 Make sure that the Cable between the Heater Panel and the Main PCA is connected correctly and NOT damaged. 2 Replace the Heater Panel ⇒ Page 8-27 . 3 Replace the Main PCA ⇒ Page 8-35 . HP Designjet 9000s Series Printer Service Manual 1-5