Edge Registration - Toshiba DP120F Service Manual

3.3 Edge Registration

The starting print position is determined by the "Lead Edge" and "Side Edge" offset data stored
in memory. Do this adjustment when the main PBA is replaced or when MEMORY CLEAR is
performed. Do it also when the LSU is replaced if necessary.
Adjustment
Adjust the Lead Edge and Side Edge so that four lines are printed in each of the top and bottom,
and three lines are printed in each of the left and right of the PRINT TEST (PATTERN 1) as
shown in the figure. The Lead Edge offset represents the distance from the top edge of the page.
The Side Edge offset represents the distance from the left edge of the page. Using the Edge
Registration procedure, the lead edge offset positions can be adjusted from -8.0mm to +8.0mm
and side edge offset positions can be adjusted from -6.0mm to +8.0mm, in increments of 0.5mm.
(1) Turn the power switch ON while holding the dial keys [ 1 ] and [ 3 ] down to enter the
service mode .
(2) Press the keys in the following order to perform the print test.
[MENU] → [ 9 ] → [ 4 ] → [ 0 ] → [ 2 ] → [ 1 ]
(3) Press the keys in the following order to enter the edge registration mode.
[MENU] → [ 9 ] → [ 5 ] → [ 0 ] → [ 6 ]
Use the [ ↑ ] or [ ↓ ] key to set the LEAD EDGE (upper side), then press the [ENTER] key.
(4)
Use the [ ↑ ] or [ ↓ ] key to set the SIDE EDGE (left side).
(5)
(6) Press the [ENTER] key to complete the setting and return to the standby mode.
(7) Print the test pattern again to check the print position.
(8) Repeat this procedure until the correct starting print position is achieved.
(9) Turn the power switch OFF to exit to the service mode.
DP120F/DP125F Removal/Replacement
Three lines
Four lines
Four lines
Fig. 8-3-5
8-134
Three lines
March 2000 © TOSHIBA TEC
08-03-05