MX-5050N, MX-5050V, MX-5070N, MX-5070V, MX-6050N, MX-6050V, MX-6070N, MX-6070V (serv.man5). Service Manual for models with the V suffix. - Sharp Copying Equipment Service Manual (repair manual). Page 17

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MX-6070V  CONSUMABLE PARTS  3 – 4
3.  Definition of developer/drum life end
When the developer/drum counter reaches the maximum printable
count.
When the developer/drum rpm reaches the specified count.
When either of the above reach the specified count, it is judged as life
end.
In an actual case, the ratio of monochrome output and color output
may differ greatly.
When data of mixed documents (monochrome and color) are output,
monochrome document data may be output in the color mode in order
to prevent against fall in the job efficiency. (ACS auto color selection).
In addition, when correction or warm-up operation is performed as well
as output operation, the developer and the drum rotates.
Therefore, the developer/drum consuming level cannot be determined
only by the copy/print quantity. When, therefore, the rpm reaches the
specified amount, it is judged as life end.
To check the developer/drum life, use SIM22-13.
However, when the copy/print quantity is large and the developer/drum
counter reaches the maximum printable quantity even if the rpm does
not reach the specified amount, it is judged as life end.
The table which shows the relation between the standard printable
quantity and the maximum printable quantity in the specified rpm
amount is as follows.
* Standard printable quantity means the printing quantity under the
specified developer/drum count by using the specified test data
Developer
Drum
4.  Production number identification
A. OPC drum
The lot number is comprised of 10 digits. Each digit indicates the con-
tent as follows.
The number is printed on the flange on the front side.
B. Developer
The lot number is 8 digits (BK) and 5 digits (CMY) in length. Each digit
indicates the content as follows.
The number is printed on the back side of the developer bag.
[BK]
[C,M,Y]
Standard printable 
number
Maximum printable 
number
Rotation
Mono
Color
Mono
Color
Mono
Color
500K
400K
570K
460K
2700K
2700K
Standard printable 
number
Maximum printable 
number
Rotation
Mono
Color
Mono
Color
Mono
Color
250K
200K
285K
230K
1350K
1350K
2
1
4
3
6
5
10
9
8
7
Digit
Character type
Content
1
Number
For this model is 2
2
Alphabet
Model conformity code
3
Number
End digit of the production year
4
Number or 
X, Y, Z
Production month
X stands for October
Y November
Z December
5
Number
Day of the production date
6
7
Number or 
X, Y, Z
Day of the month of packing
X stands for October
Y November
Z December
8
Number
Day of the packing date
9
10
Alphabet
Production factory
Digit
Character type
Content
1
Alphabet
Production factory
2
Number
End digit of the production year
3
Number
Production month
4
5
Number
Day of the production date
6
7
hyphen
8
Number
production lot
Digit
Character type
Content
1
Number
End digit of the production year
2
Alphabet
Production factory
3
Number or 
X, Y
Production month
0 stands for October
X November
Y December
4
Number
Day of the production date
5
BK 
C .  M .Y 
3B301 
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