Panasonic DP-8032 Service Manual page 339

8.23.1. Laser Power (PWM Circuit) Adjustment
(-5)
(0)
+2
(+5)
In our sample, 4 patches
are visible.
8.23.2. LSU Skew Adjustment
Ver. 1.2
Test Pattern
(1) Ensure that Ledger / A3 Size Paper is loaded in one
of the Trays, and pull the other Trays out.
(2) Press the "FUNCTION", "ORIGINAL SIZE
(LEDGER/A3)", and the "3" keys simultaneously.
(3) Input the password, and select the "OK" button to
enter the Service Mode (default password is
00000000).
(4) Press the "8" and "START" keys to enter the F8
Mode (Service Adjustment).
(5) Press "18 LSU PWM Pattern" to print the Test
Pattern.
(6) Observe the position of the uppermost visible gray
patch.
Sample:
4 gray patches are visible in the illustration, the value
of the uppermost patch position is "+2" in our
example.
(7) Press the "OK".
(8) Press the "6" and "START" keys to enter the F6
Mode (Adjust Parameters)
(9) Press "39 LSU Unit PWM Adjust".
(10) Press "INPUT" and enter the value of the gray patch,
as established in Step (6).
(11) Press "OK" button 2 times.
(12) Press the "FUNCTION" and "C (CLEAR)" keys
simultaneously to exit the Service Mode.
(1) Remove the Front Left Cover. (Refer to "Replacing the
LSU", steps (1) ~ (15))
(2) Loosen 4 Red Screws.
339
DP-8032/8025
2008