Lexmark 6500e
Troubleshooting. The power does not come on
| Action | Yes | No |
|---|---|---|
| Step 1 Is the AC cord unplugged? |
Plug in cord | Go to step 2. |
| Step 2 Has the POR sequence been followed? |
Go to step 3. | See “Power On Reset (POR) sequence” |
| Step 3 Remove the engine access cover to reveal the power supply. Disconnect the cable from CN201 on the power supply and check for the following voltages: • CN201-1 +24V • CN201-2 GND • CN201-3 +5V • CN201-4 GND • CN201-5 +5V • CN201-6 GND Do the measurements on the power supply match the above values? |
Go to step 4. | Replace the power supply. |
| Step 4 Reconnect the cable to CN201 of the power supply. Remove the controller board cover and disconnect the cable from J1 on the controller board. Check the voltages listed in step 3 at the end of the cable connected into CN201 of the power supply. Do the measurements match the values in step 3? |
Go to step 5. | Replace the power supply to controller board cable. |
| Step 5 Reconnect the cable to J1 of the controller board. Disconnect the cable from J2 on the controller board. Do the measurements on the power supply match the values in step 3? |
Go to step 6. | Replace the engine board to controller board cable. |
| Step 6 Reconnect the cable to J2 of the controller board. Disconnect the cable from J9 on the Engine Board. Do the measurements on the power supply match the values in step 3? |
Replace the engine board. | Replace the engine board to controller board cable. |