Adjustment Procedure Using The Service Application; Adjustment; Density Adjustment; Adjustment Of M1 Motor Current - Mitsubishi Electric CP-D70DW Service Manual

ADJUSTMENT PROCEDURE USING THE SERVICE APPLICATION

In this printer, adjustments are performed using the service application. The adjustment procedures are as follows. In addition,
see the separately supplied operation manual of the service application for the adjustment procedure using the software.
1. 24V adjustment
This item is used to adjust the voltage of 24 V. In case of an adjustment failure, M1 motor loses steps. In addition, the
printing density becomes dark or light.
Adjustment procedure
1. Remove the top panel and measure the voltage of the TP7705 on the PCB-DIGITAL. (Connect the minus terminal to the
chassis.)
2. Adjust the voltage of the TP7705 to 24.00±0.05 V using the 24V Adjustment menu in the service application.

2. Density adjustment

This item is used to decrease the density variations caused by the head resistance variations. In case of an adjustment
failure, black areas in the printing image become too light, too dark, burnt, or matte.
Adjustment procedure
1. Printing before the head replacement (to compare the printings before and after replacement)
Print the head pattern in 10x15 (4x6") size using the Density Adjustment menu in the service application.
2. Printing after the head replacement
Set the density adjustment value to the default using the Density Adjustment menu in the service application, and print the
head pattern (in 10X15 (4X6") size).
3. Comparing with the printing before the head replacement and performing the fine adjustment
Compare the image printed in step (1) (before the head replacement) with that printed in step (2) (after the head
replacement), and if necessary, perform the fine adjustment using the density adjustment menu in the service application.

3. Adjustment of M1 motor current

This item is used to decrease the uneven rotation of the motor caused by the variation of the M1 motor.
In case of an adjustment failure, banding is happened in the printed image.
Adjustment procedure
1. Printing images before adjustment
Set the adjustment value in the Adjustment of M1 motor current of the service application to the default (B8h) and print a
solid gray pattern (in 10X15 (4X6") size). The following adjustment isn't necessary when banding is not happended.
2. M1 motor current adjustment
Print a solid gray pattern and, according to the printing result, adjust the Adjustment of M1 motor current of the service
application to the value at which banding is not happened. Select from the following adjustment values.
BDh, C8h, C2h
TP7705
PCB-DIGITAL
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