Service manual

AL-1651CS TEST COMMAND, TROUBLE CODES 10 - 19
46 29 Image contrast adjustment
(600dpi) (GAMMA 600)
[Function]
Contrast is set for each mode.
When this test command is executed, the current se value is displayed in 2 digits (Default: 50).
Change the set value and press [START] key to make a copy under the set value.
When the set value is increased, the contrast becomes higher. When the set value is decreased, the
contrast becomes lower.
In this case, only Exp.3 copy is made. When, however, the setting is made to make higher contrast,
Exp.1 and Exp.5 copies also become in higher contrast. When made to a lower contrast, Exp1. and
Exp.5 copies become lower contrast, too.
Press [
←/→] key to switch the mode. The set value of the selected mode is displayed on the LCD.
(Adjustment value: 1 – 99)
∗ No density display on LCD.
[Operation]
The operation is similar to test command 46-01.
30 AE limit adjustment (AE
LIMIT)
[Function]
Used to set the limit value in AE and AE (toner save).
Change the setting and press [ENTER/START] key to write the setting into the EEPROM. The
machine goes into the sub code entry standby mode.
By pressing [
←/→] key, setting is changed. (Setting range: 0 – 31, Default: 0)
<Remark>
When test command 26-06 (Destination setting) or test command 46-19 Auto Exposure mode is
changed, the setting of this test command is also changed to the default in connection.
[Operation]
The operation is similar to test command 46-19.
31 Image sharpness
adjustment (SHARPNESS)
[Function]
Used to adjust sharpening/blurring of image in each mode.
When this test command is executed, warm-up and shading are performed and the current set value
is displayed. (Default: 1)
Change the set value and press [START] key to make a copy under the set conditions.
To change the mode, press [
←/→] key. The code number of the selected mode is dip0slayed on the
LCD.
[Operation]
The operation is similar to test command 46-01.
Main
code
Sub
code
Contents Details of function/operation
Mode Display item Default LED
AE mode (600dpi) AE 50 COPY mode lamp
TEXT mode (600dpi) TEXT 50 PRINT mode lamp
PHOTO mode PHOTO 50 SCAN mode lamp
TS mode (TEXT)(600dpi) TSTXT 50 PRINT mode lamp
SCAN mode lamp
TS mode (AE)(600dpi) TSAE 50 COPY mode lamp
SCAN mode lamp
Mode Display item Remark
Limit value for AE AE
Limit value for AE (toner save) TSAE
Image quality Setting No Remark
Blurring 0
Standard 1 Default
Sharpening 2
Mode Display item Default setting LED
AE mode AE 1 COPY mode lamp
TEXT mode TEXT 1 PRINT mode lamp
PHOTO mode PHOTO 1 SCAN mode lamp
TS mode (TEXT) TSTXT 1 PRINT mode lamp
SCAN mode lamp
TS mode (AE) TSAE 1 COPY mode lamp
SCAN mode lamp