Samsung CLP 600N - Color Laser Printer, Service Manual

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System Overview
Samsung Electronics
Service Manual
3-5
12) LSU
This is a core part of LBP. It forms a latent image on the surface of OPC drum using a static
charge.
* Resolution: Real 600 dpi
* Motor : Brushless DC motor PWM control.
13) Main Drive Unit
This motor drives, by way of a gearbox, the OPC unit, ITB unit, feeder unit, fuser unit, exit unit and
duplex unit.
> Spec.
* Power : 20W Max (24V)
* Drives : OPC unit, ITB unit, Fuser, Feeder, Duplex unit, Exit unit
14) DEVE Drive Unit
This motor drives, by way of a gearbox, the toner cartridges and ITB cleaning cam.
> Spec.
* Power : 20W Max (24V)
* Drives : DEV (4 Color)/ITB Cleaning)
15) SMPS (Switching Mode Power Supply)
This power supply uses the AC supply voltage to generate the DC voltages used by the system.
The SMPS has 5 output channels (+3.3V, +5V, +24V, +24VF1, +24VF2).
The AC Heater Control Unit that supplies power to the fuser is also located on the SMPS.
16) HVPS (High Voltage Power Supply)
The HVPS creates the high voltages (Charger, Supply, T1, T2, Developer) used for the electro
photographic process. The high voltage is created from the 24V line from the SMPS. High Voltage
output is supplied to the toner cartridge, OPC drum unit, PTB unit, and T2 Transfer roller.
17) Main Controller PBA
The Main controller PBA is very important as it is the heart of printer. It has several major function
blocks.
* CPU (SPL-C : 32ousc) : This manages the printing order from the host, creates bitmap
data for the engine to print and controls various devices that are needed to operate the printer.
*Engine Control Block: This manages images and controls various kinds of I/O
* Memory Block : The operating system uses this to store video data and printing orders given by host.
* ROM Block : The printer OS and PDL Interpreter are stored here.
* In addition there are USB 2.0 Block, IEEE 1284 Block, Option Block, OPE Panel, etc.
18) Drive PBA
Each toner cartridge requires the HV Supply only when that colour image is being processed. This
unit takes its HV source from the HVPS and using 4 solenoids selects which cartridge is to receive
the Supply voltage. This section also contains the DEVE motor, DEVE clutch, and DEVE solenoid
drives. These are activated in sequence as required by the printing process.
19) DEVE CRUM PBA
This detects new or used toner cartridges and also checks that cartridges are approved parts. If a
toner cartridge is not suitable for the machine an error message is displayed.