HP d640 HP D640 High-Volume Printer - User Manual (Printer and Accessories), C - Page 212

Print Messages Call Engineer Error Messages and Codes Error Message Toner density voltage low alarm Code SVC 5A Toner hopper SVC 5B alarm Main motor alarm SVC 69 High-voltage power supply alarm SVC 6F Spindle motor SVC 79 alarm BD1 alarm SVC 7A BD2 alarm SVC 7B BD speed high SVC 7C alarm Description Action The reference voltage used to measure the toner concentration in the developer unit is below the normal range. Purge developer and try again with a new bottle. If this error code persists, call your service representative. The hopper which holds the toner is not working correctly, or there is no toner in the hopper. This error will occur if you continue to clear a Toner Empty condition. Confirm that the plastic protective cover on the right side of the toner hopper was removed (see page 2-47 of the D640 Installation Manual). If you have recently added toner, call your service representative. If you have not recently added toner, try adding toner. If the toner hopper is full, call your service representative. If the toner hopper was empty, cycle power after adding toner. The main motor did not reach normal rotation speed. Verify that the drum and fuser unit is correctly installed and that all printer doors and covers are closed, then press Clear. If this error code returns, call your service representative. The high voltage power supply is not working correctly. Clean the transfer assembly charger (see "Transfer Assembly Guide" on page 5-9) and try to print again. If the error persists, try replacing the transfer unit (see "Removing the Transfer Assembly" on page 4-19). If the error still persists, try replacing the drum unit (see "Drum Kit - Replacing Drum and Transfer Assembly" on page 418). If the error persists after replacing the drum unit, call your service representative. The motor inside the optical unit did not reach the normal rotation speed. Turn the printer off for at least 30 seconds, and turn the printer on again. If this error code returns, call your service representative. The BD (beam detection) signal number 1, inside the optical unit is not working correctly. Turn the printer off for at least 30 seconds, and turn the printer on again. If this error code returns, call your service representative. The BD (beam detection) signal number 2, inside the optical unit is not working correctly. Turn the printer off for at least 30 seconds, and turn the printer on again. If this error code returns, call your service representative. The BD (beam detection) cycle, inside the optical unit is above normal speed. Turn the printer off for at least 30 seconds, and turn the printer on again. If this error code returns, call your service representative. Printer Messages A-11