Gestetner B147, Service Manual

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COPY SERVICE MODE
SM 5-75 B147/B149/B190
Service
Tables
[Coverage] Pixel Coverage Ratio 7-833
Displays the image coverage ratio for each color of the last output.
This SP mode displays the “coverage ratio” of the output, i.e. the ratio of the total
pixel area of the image data to the total printable area on the paper. Note that this
value is not directly proportional to the amount of toner consumed, although of course
it is one factor that affects this amount. The other major factors involved include: the
type, total image area and image density of the original, toner concentration and
developer potential.
7-833-1 Last [K]
7-833-2 Last [C]
7-833-3 Last [M]
7-833-4 Last [Y]
*BCU [ 0 to 100.00 / - / 0.01 %/step ]
Displays accumulated average value of image coverage ratio for each color.
SP 7-833-5 to -8 vs SP 8-831-1 to –4
The averages for K (SP 7-833-5 and SP 8-831-1) are the same.
For CMY, SP 8-831 does not include black-and-white pages in the middle of a colour
job. However, SP 7-833 does include these pages in the average. As a result, the
readings of SP 7-833 will be lower, because these averages include pages for which
there is zero for CMY, but the averages calculated for SP 8-831 do not include these
pages.
7-833-5 Average [K]
7-833-6 Average [C]
7-833-7 Average [M]
7-833-8 Average [Y]
*BCU [ 0 to 100.00 / - / 0.01 %/step ]
Displays the total number of toner cartridges replaced.
7-833-11 Toner [K]
7-833-12 Toner [C]
7-833-13 Toner [M]
7-833-14 Toner [Y]
*BCU [ 0 to 65535 / - / 1 cartridge/step ]
NOTE: Currently, the data in SP7-833-011
through 014 and the data in SP8-781-001
through 004 are the same.
7-834 [Coverage Clr] Coverage/Toner Data Clear
7-834-1 Average This menu resets the data in SP7-833-005
through 008.
7-834-2 Toner This menu resets the data in SP7-833-011
through 014 and SP8-781-001 through 004.
7-834-3 S: PREV Toner This menu resets the data in SP8-901-001
through 004.
7-834-4 S: Coverage 0-100 This menu resets the data in SP8-851-001
through 004, SP8-861-001 through 004, SP 8-
871-001 through 004, and SP8-881-001
through 004.
7-834-255 All This menu resets all the data listed above.
7-835 ACC Counter *CTL [0 ~ 9999999 / 0 / 1 /step]
7-835-1 Copy ACC
7-835-2 Printer ACC
Displays the number of times ACC has been
done.
Total Memory Size 7-836
Displays the memory capacity of the controller system.