IBM 6500-V1P Maintenance Manual - Page 77

Operator Panel Message 084 POWER 48V CHECK * SEE USERS MANUAL (continued) Display Messages Table 3. Message List Explanation Corrective Action a. If the printer comes to READY, go to step 13. b. If the 084 message appears, power off , unplug the printer, and go to step 8. 8. In the normal power-on sequence, the card cage fan (CCF) will turn on after "TESTING HARDWARE, PLEASE WAIT" displays on the operator panel. If the CCF turns on, this means the power supply (PS) +48 volts is OK. In the following substeps, you will determine if +48V works by removing most external cables and components from the controller and PS boards. a. Disconnect all connections to the controller board except the P101 power connector and P110 op panel connector. b. Remove the two-pin CCF connector from the P106 shell and plug it onto J106 pins 9 and 11 on the controller board. c. Power on the printer. If the operator panel lights up, this indicates PS +5V is working. If the CCF runs momentarily (about 2 seconds), the PS +48V is working and you can go to step 9. d. The CCF did not come on in step 8c. Do CCF resistance and wiring checks. Replace the CCF or any wiring found defective. e. Power on the printer. If the operator panel lights up, the PS +5V is working. If the CCF runs momentarily (about 2 seconds), the PS +48V is working and you can go to step 9. f. If the CCF did not come in step 8e, the controller or PS board is defective. It is easier to swap out the PS first. Power down and unplug the printer. Replace the PS. g. Power on the printer. If the operator panel lights up, the PS +5V is working. If the CCF runs momentarily (about 2 seconds), the PS +48V is working. Go to step 9. h. If the CCF did not come on in step 8f after replacing the PS, power down and replace the controller (page 319). 77