Panasonic Workio DP-3030, Service Manual

Page: 389 / 486

389
DP-2330/3030
MAR 2005
Ver. 2.1
DP-2310/3010
8.34.1. Laser Power (PWM Circuit) Adjustment
(19) Disconnect 3 Harnesses .
(20) Remove 3 Screws .
(21) Remove the LSU Unit .
(22) Install the New LSU Unit .
(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 "3" keys simultaneously in
that order to enter the Service Mode.
(3) Press the "8" and "START" keys to enter the F8
Mode (Service Adjustment).
(4) Press "18 LSU PWM Pattern" to print the Test
Pattern.
(5) 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.
(6) Press the "OK".
(7) Press the "6" and "START" keys to enter the F6
Mode (Adjust Parameters)
(8) Press "39 LSU Unit PWM Adjust".
(9) Press "INPUT" and enter the value of the gray
patch, as established in Step (5).
(10) Press "OK" button 2 times.
(11) Press the "FUNCTION" and "C" (CLEAR) keys
simultaneously to exit the Service Mode.
Test Pattern
In our sample, 4 patches
are visible.
(0)
+2
(-5)
(+5)