Riso RZ5 Series, Technical Manual, Page: 215 / 410

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CHAPTER 13: MASTER MAKING SECTION
[ 13 - 37 ]
Adjustment
1. Thermal Power of Thermal Print Head
The thermal power must always be adjusted each time a TPH (thermal print head) is replaced.
(1) Activate test mode No.9874 to access into the protected area test mode.
(2) Run test mode No.1234 (TPH resistance input) and enter the resistance value imprinted on a sticker
attached on each TPH. Press START key to enter the value.
(3) Press <RESET> key to return to return back to the normal operation mode.
2. Master Clamp Range Adjustment
Checks and adjustment
(1) Make a master and mark a short straight line at the center of the master along the edge of the clamp plate
so the measurement of the mater under the clamp plate can be measured.
(2) Open the clamp plate and measure from the leading edge of the master to the marking made. The
measured length should be 18mm (plus or minus 1mm).
(3) If the measurement is out of the specified range, make an adjustment using test mode No. 543 (master
clamp range adjustment) clamp range adjustment.
* Increasing the setting by the test mode increases the master clamp amount.
3. Write Start Position Adjustment
Checks and adjustment
(1) Run Test mode No.80 (Test print A) to make a master.
(2) Remove the leading edge of the master by opening the clamp plate of the print drum and measure the
distance from the leading edge of the master to the write start position (top of the image) to confirm that the
distance is 63mm (plus or minus 1mm) measured at about the center of the master material.
(3) If the measurement is out of the specified range, run test mode No.541 (Write start position adjustment)
and make an adjustment.
* Increasing the settings by the test mode decreases the distance, moving the image up on the master
material.
* Master Clamp Range Adjustment must be made before the Write Start Position Adjustment.