
DP750 User's Manual
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4.7.2 Maintenance Printing Test (H pattern)
One page printing of H pattern is performed by turning power on, while pressing the LF/FF key.
Press ONLINE key can stop printing, restart the printer can exit the H pattern.
4.7.3 Alignment Adjust Mode
Enter the alignment adjust mode to improve the print quality when the printer is used for a long time.
In DPI state, use COPY key to choose different copy mode, corresponsively adjust alignment in every
mode. In the alignment adjust title, COPY 1 indicates the “1+4” mode while COPY 2 indicates the “1+6”
mode.
1. Make sure the printer is paper in and turn on the printer.
2. In the online mode, press and hold on the LF/FF key and SPEED key until the PAPER OUT and
ONLINE indicators blink simultaneously, the printer enters the alignment adjust mode.
3. After entering the alignment adjust mode, press the following keys to adjust the degree of make
columns:
EJECT/LOAD Each press this key, the even line will move left with one step (30 steps max.)
Press ONLINE key to check the result.
LF/FF Each press this key, the even line will move right with one step (30 steps max.)
Press ONLINE key to check the result.
Holding on pressing SPEED In the alignment adjust mode, press this key to the next
copy mode. It can switch among NORMAL print mode, “1+4” print mode and
“1+6” print mode. Press ONLINE key to check the result.
SPEED Switch to the next DPI adjust state. It can switch among 80DPI, 120DPI, 180DPI,
240DPI and 360DPI. Press ONLINE key to check the result.
ONLINE Store and print the current settings
4. Restart the printer and exit the alignment adjust mode.
Note: Alignment adjust mode will affect the printing quality, think over before adjust it and strict
to the instructions while adjusting.
4.7.4 Hex Dump Mode
Turn power on while pressing the LOAD/EJECT key, which causes the printer to enter Hex Dump mode.
In this mode, the data which are sent from computer will print with Hex mode. Pressing the ONLINE key
can stop printing, and turn off the printer to exit Hex Dump mode.
Figure 4-4 The former of English self-test
Figure 4-5 The former of the maintenance print
ASCII TEST MODE
Jolimark DP750 VX.X XXXX/XX/XX
!”#$%&’()*+,-./10123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_’abc
!”#$%&’()*+,-./10123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_’abcd
”#$%&’()*+,-./10123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_’abcde
H PRINT MODE
Jolimark DP750 VX.X XXXX/XX/XX
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
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