Music (Automatic Color Registration Correction) - Ricoh MP C3004 Field Service Manual

3. Detecting the count (Initial value)
While agitating the developer, the machine detects the output from the TD sensor, and stores this
output as the initial
4. Calculating Vt
The machine calculates Vt using the difference of the current
count through SP.
5. Forced toner supply (only when newly installing the machine)
This step is required only when the machine is newly installed because there is no toner in the toner
transport route.
When the developer initial setting is successfully completed, the machine stores the calculated Vt as
Vtref. The Vtref is used as a reference the next time the machine performs an initial developer
setting.
SC360-01 through -04 appears if the results of step 3 are as follows:
• The count is equal or exceeds the threshold (6480 [counts]).
• The count does not match the target threshold (5800 – 6380 [counts]) three times
consecutively.
Process Control and MUSIC are forcibly done after developer initial setting when a PCDU is replaced.

MUSIC (Automatic Color Registration Correction)

Correction Timing
The machine creates correction patterns, measures the image position by reading the correction
patterns, and corrects the writing position.
Power switch just turned on, or recovering from the
1
energy save mode
When printing (when the temperature has changed by a
certain amount since the previous job ended, or when
2
the number of pages printed becomes more than a set
number)
End of printing (when the temperature has changed by a
certain amount since the previous job ended, or when
3
the number of pages printed becomes more than a set
number)
count.
Operative Condition
Process Control
count while referring to the initial
Notes
Mode b or Mode a is done
See notes *1 and *2 below.
Mode b or Mode e is done
Mode b is done
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