Removing the Main Controller PCB ------------------------------------------4-49
Removing the DC Controller PCB --------------------------------------------4-51
Removing the Fax Unit ----------------------------------------------------------4-52
Laser Exposure System --------------------------------------------------- 4-53
Removing the Laser Scanner Unit --------------------------------------------4-53
Cleaning the Dustproof Glass -------------------------------------------------4-54
Image Formation System ------------------------------------------------- 4-55
Removing the Drum Unit --------------------------------------------------------4-55
Removing the Developing Unit ------------------------------------------------4-56
Installing the Developing Unit --------------------------------------------------4-57
Removing the Waste Toner Container ---------------------------------------4-59
Removing the Secondary Transfer Outer Roller --------------------------4-60
Removing the ITB Unit ----------------------------------------------------------4-61
Removing the ITB Cleaning Blade -------------------------------------------4-63
Removing the ITB -----------------------------------------------------------------4-64
Removing the Primary Transfer Roller (Y/M/C/BK) ----------------------4-67
Removing the Patch Sensor Unit ---------------------------------------------4-68
Removing the Waste Toner Drive Unit ---------------------------------------4-69
Removing the Registration Drive Unit / Duplex Merging Motor /
Registration Motor ----------------------------------------------------------------4-70
Removing the Main Drive Unit -------------------------------------------------4-71
Removing the Drum Cleaning Pre-exposure LED Unit------------------4-74
Remove the Bottle Drive Unit (YM)/(CBk) ----------------------------------4-75
Fixing System ---------------------------------------------------------------- 4-79
Removing the Fixing Unit -------------------------------------------------------4-79
Removing the Fixing Film Unit -------------------------------------------------4-79
Removing the Fixing Pressure Roller / Fixing Pressure Roller Shaft
Support ------------------------------------------------------------------------------4-83
Removing the Fixing Drive Unit -----------------------------------------------4-84
Pickup/Feed System ------------------------------------------------------- 4-85
Removing the Pickup/Feed/Separation Roller
(Cassette 1/2,Cassette 3/4(Option)) -----------------------------------------4-85
Removing the Multi-purpose Tray / Feed / Separation Roller ---------4-86
Removing the Right Door Unit -------------------------------------------------4-87
Removing the First Delivery Unit ----------------------------------------------4-90
Removing the Second Delivery Unit -----------------------------------------4-91
Removing the Third Delivery Unit ---------------------------------------------4-92
Removing the Cassette 1 Pickup Unit ---------------------------------------4-92
Removing the Cassette 2 Pickup Unit ---------------------------------------4-94
Removing the Cassette 3/4 Pickup Unit (Option) -------------------------4-95
Removing the Cassette 1 Vertical Path Roller-----------------------------4-96
Removing the Registration Roller ---------------------------------------------4-98
Removing the Registration Guide Unit ------------------------------------ 4-101
5
Pickup Feed System ---------------------------------------------------------5-2
Image position adjustment ------------------------------------------------------- 5-2
Document Exposure System -----------------------------------------------5-5
Actions after Replacement --------------------------------------------------5-6
HDD ----------------------------------------------------------------------------------- 5-6
Main controller PCB --------------------------------------------------------------- 5-7
DC controller PCB ----------------------------------------------------------------- 5-7
TPM PCB ---------------------------------------------------------------------------- 5-7
FLASH PCB ------------------------------------------------------------------------- 5-8
Control Panel CPU PCB/Touch Panel ---------------------------------------- 5-8
Developing Unit -------------------------------------------------------------------- 5-8
Patch Sensor Unit ----------------------------------------------------------------- 5-8
Pre-exposure LED Unit ----------------------------------------------------------- 5-8
Laser Scanner Unit ---------------------------------------------------------------- 5-8
After Replacing the Copyboard Glass ---------------------------------------- 5-9
After Replacing the Scanner Unit ---------------------------------------------5-10
6
Initial Check --------------------------------------------------------------------6-2
Initial check items list ------------------------------------------------------------- 6-2
Test Print ------------------------------------------------------------------------6-3
Overview ----------------------------------------------------------------------------- 6-3
Steps to select the test print TYPE -------------------------------------------- 6-3
How to use the test print --------------------------------------------------------- 6-4
Troubleshooting Items ----------------------------------------------------- 6-10