1 - 28 Phaser 840/850/860/8200 Color Printer - Service ManualRear Panel Status LEDsTwo LEDs on the rear panel indicate the status of the printerís CPU functions: PostScriptprocessing and print engine control or diagnostics.1. PostScript health light (LED) normally blinks once per second.2. Engine health light (PE LED) normally blinks twice every 2.5 seconds.3. During the first minute of power-up the LEDs are used to indicate diagnostic progressrefer to "System power-up sequence", on page 3-76.4. If the LEDs stop blinking for more than a minute refer to the topic "Error Codes andMessages", on page 2-37.5. If the LEDs are blinking in a repeating pattern, other than normal operating healthstatus as described, refer to the topic "Error Codes and Messages", on page 2-37.DIP SwitchesFour DIP switches allow you to reset the printer or place the printer in different operatingmodes. You must set the switches before power is turned on to enter the selected mode.Table 1-6 Rear panel DIP switch settingsFunction Switch 1 Switch 2 Switch 3 Switch 4Normal operating mode UP UP UP* UPService mode DOWN UP UP UPReset printer UP* UP* UP* DOWNthen UP**Manufacturing mode (Bypassmode)UP DOWN UP* UPDevelopment mode (engineeringuse only)DOWN DOWN DOWN* UPRecovery mode (engineering useonly)DOWN UP DOWN UP* Recommended DIP switch postion.** If DIP switch 4 is left in the down position the printer will not turn off.
