IBM 6500-V5P Maintenance Manual - Page 78

Operator Panel Message 084 POWER 48V CHECK * SEE USERS MANUAL (continued) Display Messages Table 3. Message List Explanation Corrective Action i. Plug in the printer and power it on. If the operator panel lights up, the PS +5V is working. If the CCF runs momentarily (about 2 seconds), the PS +48V is working. j. If, after replacing the power supply and controller in steps 8f and 8g, the CCF did not come on, contact DDS and Boulder support. Exit this procedure. IMPORTANT: Be sure to install the original power supply and controller board back into the printer if the new part is NOT required. k. Replacing the PS and controller fixed the initial errors. To make sure that the PS was also defective, do the following 1) Replace the original PS. 2) Retest. 3) If OK, return the new PS that is not required. Go to step 9. 4) If not OK, reinstall the new PS. If OK after installing the new PS, go to step 9. If not OK, contact DDS and Boulder support. Exit this procedure. 9. In step 8, you determined that the PS +48V is working; therefore, an external cable or component connecting to the controller board or the PS is pulling down the PS +48V. Reconnect all cables to the controller board and PS. Verify that the 084 message still occurs when you power on the printer. In the table steps below, you are trying to determine which external cable or component is defective. Disconnect one cable at a time in accordance with the following table. If the 084 error still occurs with the cable disconnected, the defective component is on another cable. If the 084 error does not occur with the cable disconnected, then the 084 error is associated with that cable - perform diagnostics on the cable and its connecting components. Always reconnect the cable before disconnecting the next cable in the table. When connecting hammer bank power P105, make sure pin 1 on P105 connects to pin 1 on the controller board. 78