Read Sharp MX-M950 / MX-MM1100 (serv.man20) Service Manual online
MX-M1100 IMAGE PROCESS SECTION H – 6
2. Process control section
A. General
Information of the surface potential sensor, the image density sensor, the temperature / humidity sensor, and the consumable parts counter is
inputted to the PCU PWB.
According to this information, the PCU PWB outputs each control signal to control the voltage, the current, the toner density control level, and
the laser power to the proper levels, maintaining a high quality printed images.
inputted to the PCU PWB.
According to this information, the PCU PWB outputs each control signal to control the voltage, the current, the toner density control level, and
the laser power to the proper levels, maintaining a high quality printed images.
B. Block diagram
PCU PWB
DV UNIT
TRANSFER UNIT
SURFACE
POTENTIAL
SENSOR
IMAGE DENSITY
SENSOR
TEMPERATURE /
HUMIDITY SENSOR
TONER
HOPPER UNIT
TONER
MOTOR
TONER
MOTOR
LSU
W-ICU PWB
TONER
BOTTLE
OPC DRUM
PROCESS CONTROL
(TONER DENSITY CORRECTION)
PROCESS CONTROL
(TONER PATCH
DETECTION)
DRUM
COUNT
PROCESS
CONTROL
(ROTATIONCOUNT)
PROCESS CONTROL
(TEMPERATURE/
HUMIDITY DETECTION)
DV MOTOR
DRUM MOTOR
DV
COUNT
PROCESS
CONTROL
(ROTATIONCOUNT)
PROCESS CONTROL
(PAPER SIZE, PAPER TYPE
INFORMATION)
TONER
CONCENTRATION
SENSOR
PROCESS
CONTROL
CONTROL
(LASER POWER
CORRECTION)
MAIN HIGH
VOLTAGE PWB
PROCESS CONTROL
(MAIN CHARGER
VOLTAGE,
DEVELOPING BAIS
CORRECTION)
MAIN CHARGER
UNIT
PROCESS
CONTROL
CONTROL
(OPC DRUM
SURFACE
POTENTIAL
DETECTION)
PROCESS
CONTROL
CONTROL
(TONER SUPPLY
QUANTITY
CORRECTION)
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