HP Designjet 4000 Service Manual - Page 15

Troubleshooting Using the Buzzer at Power-up to Troubleshoot When the Printer is powered up, it doesn't make a "Beeping Sound" until it is completely powered-up and ready to use. If there is a beep during the power-up sequence, this may signify that there is a problem within the Electronics Module. The following table will help you to use the "Beeping Sound" to diagnose certain problem: Number of Beeps 1 2 3 4 5 6 7 8 Problem Description Processor absent Faulty Main PCA or PSU Faulty Memory Module Faulty Video Card (not used) Faulty PCI Card BIOS Damaged Motherboard damaged Hard Disk Drive damaged or missing Corrective Action „ Replace the Main PCA ⇒ Page 8-74. „ Replace the Main PCA ⇒ Page 8-74. „ Replace the PSU ⇒ Page 8-78. „ Check that the Memory Module is installed correctly. „ Try installing the Memory Module in the other Memory slot and check if the problem reappears. „ If the problem reappears, replace the Memory Module ⇒ Page 8-72. „ If the problem does NOT reappear, then the original slot could be faulty. In this case, replace the Main PCA ⇒ Page 8-74. „ Replace the Main PCA ⇒ Page 8-74. „ Replace the Main PCA ⇒ Page 8-74 „ Replace the Main PCA ⇒ Page 8-74 „ Replace the Main PCA ⇒ Page 8-74 „ Remove the Main PCA Cover and (with the Printer switch On) check that the HDD is spinning (you should feel it spinning when you touch it or at least hear it spinning). If the HDD is not spinning, then it could be damaged. In this case, replace the HDD ⇒ Page 8-76. „ Make sure that ALL cables connected to the HDD are not damaged and are connected correctly. „ Replace the HDD ⇒ Page 8-76 „ Replace the Main PCA ⇒ Page 8-74 hp designjet 4000 series printer service manual 1-9