Copies gradually go light after 30k - 80k on a Ricoh Mp6001

[tcs04]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

Small point.

Make sure when you install developer that you switch on with the front door open or the machine will go straight into Process control mode and during the adjustment may add toner before you get the chance to start the dev installation. This will screw up the toner levels (Possible overtone) which may the make the ID sensor dirty and possibly lead to PCQ.

My normal routine is


Open Door
Switch on (Leave door open)
Enter SP mode
SP2220 to 2.5 (precaution)
SP2801-1 (Lot Number) Enter
SP2801-2. Close door. count to 3. Execute.

SP3001-2 I.D initialise
SP2962

Print SMC-2 to check settings.


There was some rather confusing detail re VSG / VSP earlier.

The VSG target (Bare drum) is 4.0vdc.

The VSP (I.D Patch) target is 1/8 VSG (0.5v... IF VSG is 4.0v!) Has been this setting on Ricoh machines for the last 20years +.

Of course, if VSG gets darker due to a dirty sensor, the VSP target will also lower and the machine will add more toner.

Developer normally seems slightly overtoned at installation and wil normally display about 0.3v, but should increase to 0.5v as the dev charges up.

If the copy does lose density, you can try SP2507-1 to "On" and 2507=2 to about 50 to check the pattern during a run which may help maintain the toner level.

[banginbishop]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

allways print out a non default report as well - how many times as an engineer changed something without writing it in the log book. good one is toner end being turned off.

[BLADE]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

good post tcs04, cheers for that info. I,ve asked several different people over time of their procedure and got a different answer everytime. The sm procedure can be interpreted differently by different people. I dont know if its my imagination but different machines seem to cycle up differently also and sound like they doing process control even after door open / close. more opinions or facts on this subject welcome

[tcs04]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

good post tcs04, cheers for that info. I,ve asked several different people over time of their procedure and got a different answer everytime. The sm procedure can be interpreted differently by different people. I dont know if its my imagination but different machines seem to cycle up differently also and sound like they doing process control even after door open / close. more opinions or facts on this subject welcome

The trick is to ALWAYS boot with the door open. if the machine doesn't like it, you haven't caused any damage, just reboot with the door closed. If you boot with the door closed and it should be open, you will cause issues with toner levels etc.

[Dumus]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

tcs04 - Good post. But I from 66 series, perform of initialization so that to put a A4 sheet of paper between toner tank and developer units. Upon completion of the initialization you can see how much machine insert unnecessary toner in dev.unit.

[tcs04]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

tcs04 - Good post. But I from 66 series, perform of initialization so that to put a A4 sheet of paper between toner tank and developer units. Upon completion of the initialization you can see how much machine insert unnecessary toner in dev.unit.

Good idea! This may explain why the dev often seems overtoned after setup? I normally vac the "pin hole plate" on the hooper but haven't tried the paper.

I always used to use the red gear on the AF2090 for this reason (to stop the hopper turning) even though the manual said it wasn't needed after the first commission.

I suppose you could remove the drive gear from the hopper on the MP6000 etc for the same effect?

[techsass]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

I've had this issue with this engine on low volume machines going back to the 1060. Setting Sp3904 to 2 forces a full Process Control when you turn the machine on. That seems to help some, but low volume machines still get undertoned - it just takes longer to show up.

[falexa01]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

Not sure if anyone has tried this. I have several MP6001 units that are running less than 20K per month. All of them complained of light copies within 20 - 30K, starting from new installation. I finally tried a full PM of the PCU and Dev assemblies, including new developer. I restarted each unit with the cover open, then entered SP mode. Prior to initializing the new developer, the following SP settings were reset to the default values - SP2001-001, -002, -003, -004, 2201-001, -002, -003, -004, -005, 2208-001, 2209-001, 2220-001, 2906-001, -002. To make sure the MFP is fully ready for initializing, I then run SMC report 5990-005. Once this has printed, I run SP2801 (TD Sensor Initial Setting), followed by SP2962 (Automatic Adjustment of Drum Conditions). Since these machines are low coverage / low volume, I adjusted the following settings as listed - 2209-001 = 650, 2940-001 = 5, 2210-001 = 1, 2506-002 = 1. After 3 months the first machine this was done to has remained stable (the others are six weeks into their post-procedure runs, also without incident). Hopefully this procedure proves helpful.

[tcs04]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

tcs04 - Good post. But I from 66 series, perform of initialization so that to put a A4 sheet of paper between toner tank and developer units. Upon completion of the initialization you can see how much machine insert unnecessary toner in dev.unit.

WOW!!!

Tried this the other day and when i looked the paper had about 3 tablespoons of toner on it!!

VT was dead on 3.0volts

Vsp spot on 0.5v

The solids were what I would describe as "perfect Ricoh" with a nice "flat" solid.

I would try removing the hopper drive gear instead (for speed)


I can't believe that we didn't find this before..... TOP TIP!!!

[jam-o-matic]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

I'm running into more of these again (winter), late to the party, but wanted to point out that the SP2-209 is the inverse = by lowering the number, you are telling the clutch to stay on longer & add more toner. To reduce the amount of toner added, you need to increase this number. Sometimes this isn't always clear when reading the manual, but was explained in detail, by a very good instructor years ago! From the manual;

"Increasing this value reduces the time the toner supply clutch remains on. Use a
lower value if the user tends to make many copies that have large areas of
black."

Thanks for the reply.
No, this customer does not do heavy runs. I've tried reducing SP2209 (toner rate) to 800 or 750 and that hasnt helped at all.
Have also tried reducing SP2201-04 and SP2201-02 (ID sensor pattern) by 50.
On arrival to machine when it was light, these are the values found:
Vref = 2.85
Vref default = 2.5
Vt = 2.86
Vsg = 3.9
Vsp = 0.47
Vd = 805
Vl = +130
SP2209 = 850 (def) - toner rate
Auto process is ON and Toner supply mode is Sensor (all default).
The Dev motor assembly has a clutch inside i noticed.

[tcs04]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

Cheers for the update and fix, Great job done +1

X2 (ALWAYS good to get feedback!) .... AND I should have RTFP before replying before!!! (already fixed!)

[tufbnme]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

SYMPTOM
One of the following occurs before the developer reaches its replacement cycle:

• Light copies
• Dirty background
• Toner dusting inside the machine

CAUSE
Toner is caught in the development sleeve gap, which decreases the amount of toner supplied. The machine then tries to supply more toner to compensate.
SOLUTION
Do the following.

1. Change/check the following SP settings, and then check the image quality.
   • Set SP2201-004 (Development Bias Adjustment ID Sensor Pattern Dev. Potential) to its default value of 240V.
     Note: This SP adjusts the amount of the toner supplied.
   • Set SP2-967-001 (Developer Density Adjustment Mode) to its default value of 0.
     Note: This SP is only for special (ammonia) paper.
   • SP3-902-008 (Drum Condition Display VI)
     If the VL value is more then +380 (positive), replace the drum.
   
   
   
2. Check/do the following
   • Replace any PM parts whose counter values are higher then target yield.
   • If the following SC(s) are mentioned often on the SMC report, do the action recommended in the Service Manual:
     SC317, SC340, SC345, SC350, SC352, SC401, SC402
   • For filming:
     Check the values of SP8851-11 (No. sheets printed at 0-2% coverage) and SP8851-21 (No. sheets printed at 3-4% coverage).
     
     -If the total of these two values is 80% or more of the total counter, change the following SP settings. Note:This means that the overall coverage rate is low for this machine. The SP settings shown below will force the machine to use more toner.
   
   
   Set SP2940 (Reface Pattern Count) to a value of 5.
   Set SP2210 (ID Sensor Pattern Interval) to a value of 1.
   Set SP2506-02 (Cont. OP. Time Cleaning Setting Time Setting) to a value of 1.
   
   To Top
   
   
3. If the symptom still occurs, clean the development sleeve as follows:Cleaning the development sleeve
   1. Remove the Mylar shown in the photo below.
      
   2. Remove the developer from the development unit through the development roller sleeve.
      
   3. Clean the development roller sleeve by sliding the brush shown in the photo firmly along the entire length of the sleeve.
      Important: Do not press the brush too hard, since this may scratch the sleeve.
      
      
      
      
      To Top
      
      
   4. Wipe the toner off the sleeve.
      Important: This is necessary in order to remove the toner that is still stuck to the sleeve.
      
      
      
   5. Make sure that the sponge and both entrance Mylars are attached correctly.CORRECT:
      
      
      
      Incorrect:
      
   6. Reattach the Mylar and install new developer.
      To Top
      
      
   
   
4. If the symptom still occurs, do the following

   Note:

   If the symptom still occurs, the cause may be that the machine's internal temperature is high, causing the wax to separate from the toner. This can reduce the toner's charge performance.

   1. Update the Engine firmware
      Model D062/D063/D065/D066: Update the Engine firmware (D0625127) to ver1.67:04 or later.
      If there is no finisher installed, set SP6-118-001 (default: 0) to a value of "1".
      Note:
      • This setting will enable the exhaust fan to cool down the machine. If there is already a finisher installed, you do not need to set this SP to "1", because the exhaust fan will automatically turn on.
      
      
      Model D052/D053/D054: Update the Engine firmware (D0545127) to ver1.06c:00.
      Model B246/B248/B249: Update the Engine firmware (B2475127) to ver1.13:60.
      Model B140/B141/B142/B143/B163/B228: Do other than updating firmware. Firmware for this symptom is not available.
      Note: After the new firmware installed, the fan will be turned on for one minute at job end, even if the timer of energy save setting is less than one minute.
   2. Clean the following filter (B0654255).
      Note: This will improve ventilation inside the machine.
      
      
   3. Attach the extra insulation pad (B0654255).
      Note: This will prevent heat from being transferred from the fusing unit to the toner bottle.
   
   

[JustManuals]

Re: Copies gradually go light after 30k - 80k on a Ricoh Mp6001

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