How do i adjust the color to color registration. the yellow on my machine is a bit off set

Registration Error 3
When a color registration error is detected with coarse
adjustment, or with the main-scan line adjustment.
PU firmware does not notify this warning to CU firmware
at the time of Shipping Mode. Therefore, this status
does not occur in a user environment.
n
2 = Yellow
3 = Magenta
4 = Cyan

Dens Shutter Error 2
DENS SHUTTER ERR
Check 3: Check to see whether the sensor shutter opens and closes normally, by the
MOTOR & CLUTCH TEST of the self-diagnostic function. If the shutter operates
imperfectly, replace the shutter unit.

When a color registration error is detected with coarse
adjustment, or with the main-scan line adjustment.
PU firmware does not notify this warning to CU firmware
at the time of Shipping Mode. Therefore, this status
does not occur in a user environment.
n
2 = Yellow
3 = Magenta
4 = Cyan

Never ever do a memory clear all on a color unit. As you discovered it changes all the color registration values. This is a very, very complicated adjustment and very time consuming. I am a color expert and have been for 25 years now. Unless youre a trained tech youll never figure it out. spend 120 bucks and call a technician sorry..

2 things the cable could be faulty (unlikley)but worth a try
or your lamp is starting to fail

CAUSE: LD Power becomes saturated when performing Auto Gamma adjustment in a low humidity condition.

SOLUTION: Perform the following adjustment:
1. [Utility].
2. [Machine Admin. Setting].
3. [System Setting].
4. [Expert Adjustment].
5. [Process Adjustment].
6. [Toner Quantity / Exposure].
7. Select the proper Exposure Adjustment [Yellow, Magenta, Cyan, or Black] by using the Next/Previous button.
8. Select Standard then select [-2] under Exposure.
9. Press OK.
Notes:
a. If the problem persists, replace the problem color drum since the cause of the SC is the combination of drum characteristic and humidity.
b. The following codes = colors: C-2831 = Yellow; C-2832 = Magenta; C-2833 = Cyan; C-2834 = Black.

When you get to registration mode, press enter, then execute will appear, then press enter. Then display will say adjusting. Remember magenta, cyan and yellow register to black. If registration is still bad you need to remove the four drums and transfer belt. To the left you will see a plastic move it to the left and you will see a white plastic with two sensor one at each end. This clear plastic get dirty and then you have bad registration. Clean it with a Q-tip. This two sensors are locate just below the left of the transfer belt, one at each side. This usually get dirty with residue of toner.

timing adjustment, perform the following.
1. Access the 36 mode (power the machine ON while holding down on the 4 and 7 keys.
2. Press [2] Image adjustment.
3. Press [3] Timing adjustment
4. Press [3] Lead edge timing adjustment
5. Press [Copy Screen]
6. Load 11x17 paper into tray 1, make a copy of the pyramid chart, and check the output.
Standard value: 3mm max.
7. If the lead edge original amount is different to the standard value, press the C button while pressing the P button.
8. Enter a value from the numeric keys on the screen, and press (SET) key.
Setting range: 0 (small) to 99 (large)
1 Step = 0.064mm.
9. Repeat steps 5 to 8 until the lead edge original erasure amount becomes the standard value.
10. Press the [PREVIOUS SCREEN) key to return to the Timing Adjustment Menu Screen.
11. Power the machine OFF/ON to exit the 36 mode.
Attachments:
PLEASE NOT THIS IS A LEADEDGE ADJUSTMENT.THE REIGIST ADJUST IS THE SAME STEPS JUST CHOOSE REGISTRATION OPTION ,AND MAKE SURE TO FOLOW PROPER DIRECTION.

ok turn the thing on and then open it up and bingo jumbalio!!!

Most probably you have to do the Color Registration Settings and the Color Calibration.
The Color Registration will fix the fuzzy printing and the Color Calibration the way how the colors looks. The Color Calibration it is done automatically after each batch of 40 or 80 pages and if you need you can do a manual Color Calibration BUT THE COLOR REGISTRATION must be done manually.

Go to Menu->Others->Service->Color Registration and print a test chart. Will print a page and you have to read the alignment of some lines Cyan Magenta Yellow Black with some numbers. Check the Advanced user guide for details. Basically you have to read the number / letters of each color where 2 lines are matching. Then you can enter those numbers into the printer for each color.

If the Cyan only is off then will be easy ...

Whenever you change the fuser unit you have to do the fuser registration.You have to use the manual feed tray with A3 or 11x17 paper for this registration.The details should be inside the new fuser box carton.