Tektronix Phaser 550 Service Manual page 192

9
Checks and Adjustments
56 Misc. Components
This test group automatically
enters the engine's
diagnostic mode (a lower level
mode). When you exit the test
group it asks you if you wish
to exit diagnostic mode. If you
wish to run more lower level
test, choose "no." If you
confirm "yes," you must wait
two minutes for the printer to
initialize before continuing
with other Service tests.
57 EXIT Engine Diag
**Start PostScript**
**Restart System**
9-10 Phaser 550 Color Printer
Black Cartridge Clutch
Yellow Cartridge Clutch
Magenta Cartridge Clutch
Cyan Cartridge Clutch
Registration Clutch
Transfer Roller Solenoid
Cleaning Blade Solenoid
Face Up/Down Solenoid
Switch Back Solenoid
Standard Pick Solenoid
Opt 1 Pick Solenoid
Opt 2 Pick Solenoid
Erasers
Energizes the toner cartridge motor and the clutch for the each
toner cartridge drive gear. Open the front cover and remove
the imaging unit. Activate the test and observe the toner
cartridge's developer roller rotate. If you open either the front
door or the right door, you must override the door open switch
Activates the aligning roller clutch. Listen for the clutch as it is
engaged and disengaged.
Raises and lowers the position of the transfer roller. Listen for
the roller as it is raised and lowered. The front panel indicates
if the roller position was properly sensed.
the front door or the right door, you must override the door
open switch
Activates the toner cartridge motor and then the clean blade
solenoid to engage the cleaning blade roller (whose cams
actuate the cleaning blade in the imaging unit). Remove the
imaging unit to observe the cleaning blade's cam roller. If you
open either the front door or the right door, you must override
the door open switch
Activates the face up face down solenoid which directs a sheet
of paper into the reverse. Open the right side jam access
panel and observe the reverser fingers as they are actuated.
Activates the switch back solenoid which pushes a sheet of
paper in the reverser to the exit roller. Open the right side jam
access panel and observe the switch back plates move.
Activates the standard pick solenoid which, when the paper
feed motor is running, would engage the pick roller and pick a
sheet of paper.
Activates the optional feeder's upper and lower tray pick
solenoids. When the paper feed motor is running, they
engage the upper or lower pick roller and pick a sheet of paper.
Turn on the pre-exposer lamp and the pre transfer lamps.
Remove the imaging unit to see if all the LEDs of the lamps
arrays are lit.
Exits engine diagnostics mode. Wait two minutes for the
engine to initialize before continuing with other Service tests.
Quits service diagnostics and start PostScript. The printer
must exit Engine Diagnostic mode (Test 57) before restarting
the system or starting PostScript. Otherwise the printer will
"hang."
Quit the diagnostic mode and restart the printer. The printer
will execute it power-up self-tests and then start PostScript.
The printer must exit Engine Diagnostic mode (Test 57) before
restarting the system or starting PostScript. Otherwise the
printer will "hang."
If you open either