Adj9.4 Image Density - Xerox 3001 Service Manual

ADJ9.4 IMAGE DENSITY
PURPOSE
The purpose is t o adjust the toner
concentration in order t o get the image
density into specification.
1. CHECWADJUST THE TONER DISPENSE
SOLENOID ADJ 9.3.
2. PREPARE TO CHECK THE IMAGE
DENSITY.
a. REMOVE THE RIGHT SIDE AND
UPPER REAR COVERS.
b. ENTER THE DIAGNOSTIC CODE [ I ]
AND MAKE A RECORD OF THE
VALUE. SET THE COPIER TO RUN
FOR 2 MINUTES BY SETTING A
VALUE OF [5].
c.
SET THE TONER CONCENTRATION
TO A NOMINAL VALUE BY SETTING
THE CODE [4] TO VALUE OF [5].
3. EXlT THE DIAGNOSTIC MODE.
4. SWITCH ON THE COPIER AND PRESS
Start. 5 SECONDS AFTER THE MAIN
DRIVE MOTOR STARTS THE TONER
CARTRIDGE SHOULD BE MOVING SLOW.
IF IT IS MOVING FAST, CONTINUE TO
CYCLE THE COPIER UNTILTHE
CARTRIDGE BEGINS MOVING SLOW.
5. REINSTALL THE UPPER REAR AND LEFT
SIDE COVERS.
6.
MAKE A COPY OF TEST PATTERN
82E5980. CHECK THAT THE DENSITY OF
THE .70G5 PARAGRAPH IS BETWEEN
PARAGRAPHS 24.0 AND 31.2. ON THE
82E5040 TEST PATTERN.
a. IF THE DENSITY IS LESS THAN
24.0, GO TO STEP
7.
b. IF THE DENSITY IS GREATER
THAN 31.2, GO TO STEP 8.
7.
INCREASE THE DENSITY.
a. ENTER DIAGNOSTIC, ENTER THE
CODE [41 AND INCREASE THE VALUE
BY 1.
b. SCROLL TO CODE [47] AUTOMATIC
TONE UP.
(1). EXlT THE DIAGNOSTIC MODE.
(2). LOOSEN AND LIFT THE RIGHT
SIDE OFTHE UPPER REAR COVER
TO VIEW THE TONER
CARTRIDGE. CYCLE THE COPIER
UNTIL THE CARTRIDGE BEGINS
MOVING SLOW FOR ONE
MINUTE, APPROXIMATELY HALF
OF THE COPIER CYCLE TIME.
c.
REPEAT THE STEP 6. IF THE DENSITY
IS STILL LESS THAN 24.0 AFTER
REACHING THE LIMIT OF THE
ADJUSTMENT, G O T 0 CQ11 LIGHT
COPY RAP.
8. DECREASE THE DENSITY.
a. ENTER DIAGNOSTIC, ENTER THE
CODE [4] AND DECREASE THE VALUE
BY 1.
b.
SCROLL TO CODE [46] AUTOMATIC
DETONE.
c.
REPEAT THE STEP
6. IF
THE
DENSITY IS STILL GREATER THAN
31.2 AFTER REACHING THE LIMIT
OF THE ADJUSTMENT, GO TO CQ1
UNIFORM BACKGROUND.
9. ENTER THE DIAGNOSTIC CODE [I]. SET
VALUE TO THE VALUE RECORDED IN
STEP 28.
12/98
ADJ 9.3
4-70 3001