Konica C6000: Gamma correction abnormality

[cxtqd]

39345

When Konica C6000 printing is abnormal in color. It is almost impossible to see 4 CMYK colors. Experts advise me on how to deal with this. Thank you.

[cxtqd]

I replaced all new materials like drums, charging, develop, belt... PRCB, PRIPB, Image correction unit, Laser unit...

[Desert Rat]

Do you have the service manual?
In the book it tell you what programs (adjustments) to run after replacing parts.
Make sure the gamma sensor and registration sensors are clean.
There is a program called the gamma off set adjustment. I usually run this adjustment
after replacing the drums, developers and chargers. Keeping the machine clean inside
will help a lot. Make sure the laser windows are clean. If they are not the output will
be light in appearance.
I will post the order of the adjustments later.

DR

[cxtqd]

i have the service manual.
"
4. LIST OF ADJUSTMENT ITEMS
4.1 Priority for Adjustment/Setting after replacing parts
Conduct the following adjustment on the items list in this order when replacing the parts on the list. Proper operation/image quality is not
guaranteed without conducting those adjustment after the parts replacement.
Note
• When replacing the overall control board (OACB) due to the OACB being damaged, be sure to use the NVRAM board (NRB) that
was installed on the damaged OACB on the new OACB. Contact the service manager of the authorized distributor if it is
considered that NRB is also damaged.
• The NVRAM board (NRB) stores various adjustment data, setting data and counter data. Therefore, when replacing the NRB,
perform all adjustments and settings, and be sure to replace the parts for control correction (Drum, developer, cleaning blade).
For details, contact the service manager of the authorized distributor.
• When replacing a board due to PB control board (PBCB), SD control board (SDCB), FD control board (FDCB), RU control board
(RUCB) or FNS control board (FNSCB) being damaged, be sure to use the non-volatile memory (EEPROM) that was installed on
the damaged control board on the new control board. Install the new EEPROM and perform all adjustments for the PB, SD, FD, RU
or FS if it is considered that the EEPROM is also damaged.
........... "

[cxtqd]

The printer is automatically adjust after error C-4601

[Synthohol]

mandatory adjustments after replacing the laser(s)

After replacing the writing unit /K, conduct the following item.
- Cleaning the dust proof glass (Refer to F.5.2.1 - Cleaning the
dust proof glass)
- Writing initial position memory (Skew initial position memory)
(Refer to I.5.3.9 Skew Initial Position Memory (Printer Adjustment -
Writing Initial Pos. Memory))
- I/O Check Mode (LD1 to LD8 alarm data clear, LD alarm
measurement) (Refer to I.5.7.1 I/O Check Mode)
- CD-Mag. Skew Adj. (Refer to I.5.3.13 CD-Mag. Skew Adj.
(Printer Adjustment))
- Restart Timing Adjustment (Refer to I.5.3.1 Restart Timing
Adjustment (Printer Adjustment))
- Color Registration Auto.Adj. (Refer to I.5.3.10 Color Registration
Auto.Adj. (Printer Adjustment))
- Color Registration Manual (Refer to I.5.3.11 Color Registration
Manual (Printer Adjustment))
- Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
Automatic Adj. (Drum Peculiarity Adjustment))
- Beam Pitch Adjustment (Refer to I.5.3.14 Beam Pitch Adjustment
(Printer Adjustment))
- Moire Adjustment (Refer to I.5.3.15 Moire Adjustment (Printer
Adjustment))
8. After replacing the writing units /Y, /M, /C, conduct the following
item.
- Cleaning the dust proof glass (Refer to F.5.2.1 - Cleaning the
dust proof glass)
- Writing initial position memory (Skew initial position memory)
(Refer to I.5.3.9 Skew Initial Position Memory (Printer Adjustment -
Writing Initial Pos. Memory))
- I/O Check Mode (LD1 to LD8 alarm data clear, LD alarm
measurement) (Refer to I.5.7.1 I/O Check Mode)
- Color Registration Auto.Adj. (Refer to I.5.3.10 Color Registration
Auto.Adj. (Printer Adjustment))
- Color Registration Manual (Refer to I.5.3.11 Color Registration
Manual (Printer Adjustment))
Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
Automatic Adj. (Drum Peculiarity Adjustment))
- Beam Pitch Adjustment (Refer to I.5.3.14 Beam Pitch Adjustment
(Printer Adjustment))
- Moire Adjustment (Refer to I.5.3.15 Moire Adjustment (Printer
Adjustment))

mandatory adjustments after replacing developer...

- Counter reset of the parts counters No.41, 42 for the developer /
Y, No.43, 44 for /M, No.45, 46 for /C,and No.47, 48 for /K.
- Toner Density Sensor Init. (Refer to I.5.4.9 Toner Density Sensor
Init. (Drum Peculiarity Adjustment))
- Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
Automatic Adj. (Drum Peculiarity Adjustment))
Printer Gamma Offset Auto. (Refer to I.5.3.23 Printer Gamma
Offset Auto. (Quality Adjustment - Printer Gamma Adjustment))




mandatory adjustments after replacing drum(s)


After replacing the drum cartridge, conduct the following items.
- Cleaning the dust-proof glass (Refer to F.5.2.1 - Cleaning the
dust proof glass)
- Counter reset of the parts counter No.21, No.22 for drum
cartridge /Y, No.23, No.24 for drum unit /M, No.25, No.26 for drum
unit /C, No.27, No.28 for drum unit /K
- Color Registration Auto.Adj. (Refer to I.5.3.10 Color Registration
Auto.Adj. (Printer Adjustment))
- Color Registration Manual (Refer to I.5.3.11 Color Registration
Manual (Printer Adjustment))
- Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
Automatic Adj. (Drum Peculiarity Adjustment))

depending on the firmware there is a selection for running all drum peculiarity adjustments that goes from one screen to the next.
best to use that.

bad part is if you didnt run the toner density adjustment immediately after completely vacuuming out the units and refilling them all your adjustments will be for nothing.
these machines are really finicky if you don't follow the manual to the letter. any skipped or step out of order and its a waste of time and developer.

good luck!!

[Desert Rat]

Thank you for posting that Synthohol, my computer went down and I was unable to access my manuals.
Synthohol is giving you the best advice. I'm curious, why did you replace the OCB and the write units?
Generally I would do the PM and the adjustments before I would start replacing boards and write units.
Even then I would post a question before replacing those parts.

DR

[qmuadhi]

Does bizhubpress c6000 have pcl drivers

Sent from my SM-A600F using Tapatalk

[Synthohol]

not that i saw, its PS or XPS.

[qmuadhi]

not that i saw, its PS or XPS.How do I get xps and does it have abetter print out than ps thanks

Sent from my SM-A600F using Tapatalk

[tulintron]

I replaced all new materials like drums, charging, develop, belt... PRCB, PRIPB, Image correction unit, Laser unit...Good morning everyone. In some cases I solved it by running Recall Standard Data for Factory Default in Process Adjustment and Quality Adjustment. I observed that it happened in cases where the batteries were already exhausted and because of persisting, cases like these happened.

The values are saved in the NVRam and in some cases, the simple procedure of changing the batteries is not enough.


Try the Recall and then perform the battery replacement procedures.


Good luck.:cool:

[Synthohol]

xps is crap, whats wrong with postscript? it has a larger font table and more accurate color.
what controller?
ic601
ic306
ic307
ic413?

[Toxic]

@tulintron
Can you share some more info about this NVRAM battery and replacement procedure,never done that.
Have C5501 with strange problem,every morning for a long time shows C2804 and sometimes C4520,gamma adjustment or recall to factory resolve problem till next morning.
Rerely in the middle of print full black turns to grey color.
It could be something with NVRAM and i did not know about battery and i would like to try that.

[tulintron]

@tulintron
Can you share some more info about this NVRAM battery and replacement procedure,never done that.
Have C5501 with strange problem,every morning for a long time shows C2804 and sometimes C4520,gamma adjustment or recall to factory resolve problem till next morning.
Rerely in the middle of print full black turns to grey color.
It could be something with NVRAM and i did not know about battery and i would like to try that.The batteries in which I referred, are the replacement parts and not the bundles of the NVRam.

If you release the NVRam batteries, you can throw the machine in the trash

[Toxic]

Never seen any battery in this machine and also can not find anything in PM and SM...
I assume that the battery is on some board?

[qmuadhi]

not that i saw, its PS or XPS.How do u get xps drivers

Sent from my SM-A600F using Tapatalk

[Synthohol]

LMGTFY ,--click here (https://lmgtfy.com/?q=konica+c6000+xps+driver)

[Rohullah]

mandatory adjustments after replacing the laser(s)

After replacing the writing unit /K, conduct the following item.
- Cleaning the dust proof glass (Refer to F.5.2.1 - Cleaning the
dust proof glass)
- Writing initial position memory (Skew initial position memory)
(Refer to I.5.3.9 Skew Initial Position Memory (Printer Adjustment -
Writing Initial Pos. Memory))
- I/O Check Mode (LD1 to LD8 alarm data clear, LD alarm
measurement) (Refer to I.5.7.1 I/O Check Mode)
- CD-Mag. Skew Adj. (Refer to I.5.3.13 CD-Mag. Skew Adj.
(Printer Adjustment))
- Restart Timing Adjustment (Refer to I.5.3.1 Restart Timing
Adjustment (Printer Adjustment))
- Color Registration Auto.Adj. (Refer to I.5.3.10 Color Registration
Auto.Adj. (Printer Adjustment))
- Color Registration Manual (Refer to I.5.3.11 Color Registration
Manual (Printer Adjustment))
- Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
Automatic Adj. (Drum Peculiarity Adjustment))
- Beam Pitch Adjustment (Refer to I.5.3.14 Beam Pitch Adjustment
(Printer Adjustment))
- Moire Adjustment (Refer to I.5.3.15 Moire Adjustment (Printer
Adjustment))
8. After replacing the writing units /Y, /M, /C, conduct the following
item.
- Cleaning the dust proof glass (Refer to F.5.2.1 - Cleaning the
dust proof glass)
- Writing initial position memory (Skew initial position memory)
(Refer to I.5.3.9 Skew Initial Position Memory (Printer Adjustment -
Writing Initial Pos. Memory))
- I/O Check Mode (LD1 to LD8 alarm data clear, LD alarm
measurement) (Refer to I.5.7.1 I/O Check Mode)
- Color Registration Auto.Adj. (Refer to I.5.3.10 Color Registration
Auto.Adj. (Printer Adjustment))
- Color Registration Manual (Refer to I.5.3.11 Color Registration
Manual (Printer Adjustment))
Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
Automatic Adj. (Drum Peculiarity Adjustment))
- Beam Pitch Adjustment (Refer to I.5.3.14 Beam Pitch Adjustment
(Printer Adjustment))
- Moire Adjustment (Refer to I.5.3.15 Moire Adjustment (Printer
Adjustment))

mandatory adjustments after replacing developer...

- Counter reset of the parts counters No.41, 42 for the developer /
Y, No.43, 44 for /M, No.45, 46 for /C,and No.47, 48 for /K.
- Toner Density Sensor Init. (Refer to I.5.4.9 Toner Density Sensor
Init. (Drum Peculiarity Adjustment))
- Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
Automatic Adj. (Drum Peculiarity Adjustment))
Printer Gamma Offset Auto. (Refer to I.5.3.23 Printer Gamma
Offset Auto. (Quality Adjustment - Printer Gamma Adjustment))




mandatory adjustments after replacing drum(s)


After replacing the drum cartridge, conduct the following items.
- Cleaning the dust-proof glass (Refer to F.5.2.1 - Cleaning the
dust proof glass)
- Counter reset of the parts counter No.21, No.22 for drum
cartridge /Y, No.23, No.24 for drum unit /M, No.25, No.26 for drum
unit /C, No.27, No.28 for drum unit /K
- Color Registration Auto.Adj. (Refer to I.5.3.10 Color Registration
Auto.Adj. (Printer Adjustment))
- Color Registration Manual (Refer to I.5.3.11 Color Registration
Manual (Printer Adjustment))
- Gamma Automatic Adjustment (Refer to I.5.4.7 Gamma
Automatic Adj. (Drum Peculiarity Adjustment))

depending on the firmware there is a selection for running all drum peculiarity adjustments that goes from one screen to the next.
best to use that.

bad part is if you didnt run the toner density adjustment immediately after completely vacuuming out the units and refilling them all your adjustments will be for nothing.
these machines are really finicky if you don't follow the manual to the letter. any skipped or step out of order and its a waste of time and developer.

good luck!!
Dear Synthohol
Can you send me this manual? I realy need that.
my email:info@kabulpen.co

Thanks in advance

[Synthohol]

i only share with people with a contributor badge. its not personal.
https://www.copytechnet.com/forums/vbdonate.php?do=donate

[Walterj]

I replaced all new materials like drums, charging, develop, belt... PRCB, PRIPB, Image correction unit, Laser unit...


Good Day
Dear
I hope this contribution helps
I think you should check the HV boards
I imagine that you have reset the counters of the replaced inputs and made the adjustments according to the technical service manual


Regards