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Removing the DC Controller PCB ------------------------------------------ 4-367
Removing the Laser Interface PCB ---------------------------------------- 4-371
Removing the Main Power Supply Box ----------------------------------- 4-373
Removing the AC Driver Box ------------------------------------------------ 4-375
Removing the IH Power Supply PCB Box -------------------------------- 4-378
Removing the Primary Charging High Voltage PCB Box ------------- 4-379
Removing the Pre-primary Transfer Charging High Voltage PCB Unit ----
4-381
Removing the Pickup Feed Driver PCB Unit ----------------------------- 4-382
Removing the Environment Sensor ---------------------------------------- 4-383
Option ------------------------------------------------------------------------ 4-384
Removing the Reader Unit (including the DADF)----------------------- 4-384
Removing the Buffer Pass Unit ---------------------------------------------- 4-398
Removing the DADF ----------------------------------------------------------- 4-402
5
Adjustment
Overview ------------------------------------------------------------------------5-2
When replacing parts --------------------------------------------------------5-2
Controller System ------------------------------------------------------------------ 5-2
Main Controller PCB 1--------------------------------------------------------------------- 5-2
Main Controller PCB 2--------------------------------------------------------------------- 5-3
DC Controller PCB ------------------------------------------------------------------------- 5-4
HDD -------------------------------------------------------------------------------------------- 5-5
TPM PCB ------------------------------------------------------------------------------------- 5-6
Flash PCB ------------------------------------------------------------------------------------ 5-6
Riser PCB ------------------------------------------------------------------------------------ 5-6
Laser Exposure System ---------------------------------------------------------- 5-7
Laser Scanner Unit ------------------------------------------------------------------------- 5-7
Image Formation System -------------------------------------------------------- 5-7
Primary Charging Wire -------------------------------------------------------------------- 5-7
Grid Plate ------------------------------------------------------------------------------------- 5-7
Primary Charging Assembly ------------------------------------------------------------- 5-7
Pre-Primary Transfer Charging Wire--------------------------------------------------- 5-8
Pre-Primary Transfer Charging Assembly -------------------------------------------- 5-8
Drum Unit ------------------------------------------------------------------------------------- 5-8
Developing Assembly ---------------------------------------------------------------------- 5-8
Potential Sensor ---------------------------------------------------------------------------- 5-9
ITB ---------------------------------------------------------------------------------------------5-12
Primary Transfer Roller-------------------------------------------------------------------5-12
Patch Sensor Unit -------------------------------------------------------------------------5-12
Waste Toner Container -------------------------------------------------------------------5-12
Waste Toner Full Sensor -----------------------------------------------------------------5-12
Fixing belt Unit ------------------------------------------------------------------------------5-12
Pressure belt Unit --------------------------------------------------------------------------5-13
Fixing assembly ----------------------------------------------------------------------------5-14
6
Troubleshooting
Making Initial Checks --------------------------------------------------------6-2
List of Initial Check Items -------------------------------------------------------- 6-2
Test Print ------------------------------------------------------------------------6-3
Overview ----------------------------------------------------------------------------- 6-3
Selecting Test Print TYPE ------------------------------------------------------- 6-3
How to check test print ----------------------------------------------------------- 6-4
16-Gradation (TYPE=4) ------------------------------------------------------------------- 6-4
Full Area Half Tone (TYPE=5) ----------------------------------------------------------- 6-4
Grid (TYPE=6) ------------------------------------------------------------------------------- 6-5
MCYBk Horizontal Line (TYPE=10) ---------------------------------------------------- 6-5
64-Gradation (TYPE=12) ----------------------------------------------------------------- 6-6
Full Color 16-gradation (TYPE=14) ---------------------------------------------------- 6-6
Image Faults -------------------------------------------------------------------6-7
Developing Sleeve Ghost ------------------------------------------------------- 6-7
Uneven vertical lines on a halftone image due to the soiled Charging
Roller ---------------------------------------------------------------------------------- 6-8
Toner Drops in the Developing Assembly ------------------------------------ 6-9
Transfer failure on the trailing edge of the 2nd side of coated paper 6-10
Calibration for color difference on front and back sides ----------------- 6-11
Vertical Lines -----------------------------------------------------------------------6-13
Alarm Code ------------------------------------------------------------------- 6-14
How to clear 04-3042, 04-3142 and 04-3242: -----------------------------6-14
How to clear 04-3043, 04-3143 and 04-3243: -----------------------------6-14
Upgrading procedure ------------------------------------------------------- 6-15
Outline -------------------------------------------------------------------------------6-15
Service Support Tool (SST) ----------------------------------------------------6-17
Supported Version ------------------------------------------------------------------------6-17
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