Service manual

K(Bk) C M Y
Glossy photo
mode (GP)
Low ID
Middle ID
High ID
ID Max
4-919-1
4-919-2
4-919-3
4-919-4
4-920-1
4-920-2
4-920-3
4-920-4
4-921-1
4-921-2
4-921-3
4-921-4
4-922-1
4-922-2
4-922-3
4-922-4
Adjustment Procedure
NOTE: Do not change the order of these steps.
1. For Image Adjustment, set the Sharp/Soft value to 4. Then copy the C-4
chart in letter mode.
NOTE: 1) For letter mode adjustment, set the Sharp/Soft value to 4. If
you set it to the standard value (3), the filter intensifies the
image contrast, making it difficult to evaluate image quality.
2) When re-copying the image after the SP mode adjustment,
be sure to reset the Sharp/Soft value to 4. (The Sharp/Soft
setting is cleared when entering SP mode.)
2. Enter SP mode.
3. Open the required SP 4-XX-X screen (see the following table).
Bk C M Y Value
Letter
mode (T)
Low ID
Middle ID
High ID
ID max
4-910-1
4-910-2
4-910-3
4-910-4
4-911-1
4-911-2
4-911-3
4-911-4
4-912-1
4-912-2
4-912-3
4-912-4
4-913-1
4-913-2
4-913-3
4-913-4
0~31
4. Adjust the offset values until the copy quality conforms to standard (see
the following table). If the copy is too dark, lower the appropriate value.
Standard Copy Quality in Letter Mode
Step Item to Adjust Level on the C-4 chart Adjustment Standard
1
ID max: (Bk, C,
M, and Y)
Adjust the offset value so that the
density of level 10 matches that of
level 10 on the C-4 chart.
2
Middle ID: (Bk,
C, M, and Y)
Adjust the offset value so that the
density of level 6 matches that of
level 6 on the C-4 chart.
3
High ID: (Bk,
C, M, and Y)
Adjust the offset value so that the
density of level 8 matches that of
level 8 on the C-4 chart.
4
Low ID: (Bk, C,
M, and Y)
Adjust the offset value so that
level 2 is not visible on the copy
and the density of level 3 matches
that of level 3 on the C-4 chart.
Rev. 1/97
COPY IMAGE ADJUSTMENT
A166/A187/A189 5-26 SM
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA