Sharp Mx 2300n Service Manual

							MX-2300/2700 N/G  SELF DIAG AND TROUBLE CODE  8 – 22
 
H4-00 Fusing section low temperature trou-
ble (TH_UM_AD2)
 
H4-01 Fusing section low temperature trou-
ble (TH_LM)
 
H4-02 Sub thermistor fusing section low
temperature trouble (TH_US)
 
H4-30 Thermistor differential input trouble
(TH_UM)
 
H5-01 5 continuous detection of POD1 not-
reached jam
 
L1-00 Mirror feed trouble
 
L3-00 Mirror return trouble 
 
L4-02 Paper feed motor lock trouble
Trouble content The temperature does not reach the specified level 
within the specified time after turning on the power 
relay.
Section PCU
Case 1 Cause Thermistor trouble, heater lamp trouble, PCU PWB 
trouble, thermostat trouble, AC power source trouble, 
interlock switch trouble
Check 
and 
remedy1) Use SIM5-2 to check blinking of the heater lamp.
2) If it blinks normally, check the thermistor and the 
harness.
Check the control PWB thermistor input circuit 
section.
3) If it is not lighted, check for the heater lamp 
disconnection and the thermostat breakage. 
Check the interlock switch. Check the AC PWB 
and the PCU PWB lamp control circuit.
4) Use SIM14 to cancel the trouble.
Trouble content The temperature does not reach the specified level 
within the specified time after turning on the power 
relay.
Section PCU
Case 1 Cause Thermistor trouble, heater lamp trouble, PCU PWB 
trouble, thermostat trouble, AC power source trouble, 
interlock switch trouble
Check 
and 
remedy1) Use SIM5-2 to check blinking of the heater lamp.
2) If it blinks normally, check the thermistor and the 
harness.
Check the control PWB thermistor input circuit 
section.
3) If it is not lighted, check for the heater lamp 
disconnection and the thermostat breakage. 
Check the interlock switch. Check the AC PWB 
and the PCU PWB lamp control circuit.
4) Use SIM14 to cancel the trouble.
Trouble content The temperature does not reach the specified level 
within the specified time after turning on the power 
relay.
Section PCU
Case 1 Cause Thermistor trouble, heater lamp trouble, PCU PWB 
trouble, thermostat trouble, AC power source trouble, 
interlock switch trouble
Check 
and 
remedy1) Use SIM5-2 to check blinking of the heater lamp..
2) If it blinks normally, check the thermistor and the 
harness.
Check the control PWB thermistor input circuit 
section.
3) If it is not lighted, check for the heater lamp 
disconnection and the thermostat breakage. 
Check the interlock switch. Check the AC PWB 
and the PCU PWB lamp control circuit.
4) Use SIM14 to cancel the trouble.Trouble content TH_UM_AD1 and TH_UM_AD2 do not exceed the 
specified level (50 count with the AD value) within 
1minute after HL_UM is turned on.
Section PCU
Case 1 Cause HL_UM does not turn on. Thermistor trouble, harness 
trouble, PCU PWB  trouble
Check 
and 
remedy1) Use SIM5-2 to check blinking of the heater lamp.
2) If it blinks normally, check the thermistor and the 
harness.
Check the PCU PWB thermistor input circuit 
section.
3) If it is not lighted, check for the heater lamp 
disconnection and the thermostat breakage. 
Check the interlock switch. Check the AC PWB 
and the PCU PWB lamp control circuit.
4) Use SIM14 to cancel the trouble.
Trouble content 5 continuous detection of POD1 not-reached jam
Section PCU
Case 1 Cause The fusing jam is not removed completely. (Jam paper 
remains.)
Check 
and 
remedyCheck the fusing section for jam paper. (winding, etc.)
Case 2 Cause POD1 sensor trouble or harness connection trouble
Check 
and 
remedyCheck the POD1 sensor harness. Use SIM14 to 
cancel the trouble.
Case 3 Cause Fusing unit installation trouble
Check 
and 
remedyCheck the fusing unit installation.
Trouble content Mirror feed is not completed within the specified time.
Section Scanner
Case 1 Cause Mirror unit trouble, mirror wire disengagement
Check 
and 
remedyUse SIM1-1 to check the mirror operation.
Trouble content Mirror return is not completed within the specified 
time.
Section Scanner
Case 1 Cause Mirror unit trouble, mirror wire disengagement
Check 
and 
remedyUse SIM1-1 to check the mirror operation.
Trouble content When the paper feed motor is rotated in warming up 
or in canceling a jam and the lock signal is not 
detected within 1sec.
Section PCU
Case 1 Cause Paper feed motor trouble, harness connection trouble 
between PCU PWB and paper feed motor, control 
circuit trouble
Check 
and 
remedyUse SIM6-1 to check the paper feed motor operation. 
Check the harness and the connector between the 
PCU PWB and the paper feed motor. 
						

							MX-2300/2700 N/G  SELF DIAG AND TROUBLE CODE  8 – 23
 
L4-04 Developing motor trouble (BLACK)
 
L4-05 Developing motor trouble (COLOR)
 
L4-06 Transfer belt separation position sen-
sor trouble
 
L4-11 Shift motor trouble
 
L4-30 Controller fan/HDD fan motor trouble
 
L4-31 Paper exit cooling fan trouble
Trouble content The motor lock signal is detected during rotation of the 
developing motor.
Section PCU
Case 1 Cause Harness connection trouble between the PCU PWB 
and the developing motor.
Check 
and 
remedyCheck the harness and the connector between the 
PCU PWB and the developing motor.
Case 2 Cause Developing motor trouble, control circuit trouble
Check 
and 
remedyUse SIM25-1 to check the operation of the developing 
motor.
Trouble content The motor lock signal is detected during rotation of the 
developing motor.
Section PCU
Case 1 Cause Harness connection trouble between the PCU PWB 
and the developing motor.
Check 
and 
remedyCheck the harness and the connector between the 
PCU PWB and the developing motor.
Case 2 Cause Developing motor trouble, control circuit trouble
Check 
and 
remedyUse SIM25-1 to check the operation of the developing 
motor.
Trouble content When separating the primary transfer belt unit, 
change in the separation position sensor 
characteristics is not detected within the specified 
time.
Section PCU
Case 1 Cause Harness connection trouble between the PCU PWB 
and the separation position sensor
Check 
and 
remedyCheck the harness between the PCU PWB and the 
separation position sensor.
Case 2 Cause The belt position sensor is not interrupted or it is 
always interrupted. Belt separation clutch operation 
trouble
Check 
and 
remedyUse SIM6-3 to check the belt separation operation.
Case 3 Cause The primary transfer belt unit is not installed.
Check 
and 
remedyInstall the primary transfer belt.Trouble content When the shift motor is initialized, no characteristics 
change of the shifter home position sensor is not 
detected within the specified time.
Section PCU
Case 1 Cause Shift motor trouble
Check 
and 
remedyUse SIM6-1 to check the operation of the shift motor.
Case 2 Cause Harness connection trouble between the PCU PWB 
and the shift motor, control circuit trouble
Check 
and 
remedyUse SIM30-1 to check the shifter home position 
sensor. Check the harness and the connector 
between the PCU PWB and the shift motor.
Case 3 Cause When the finisher is installed with the finisher 
connector disconnected and when the finisher 
communication trouble occurs.
Check 
and 
remedyConnect the finisher connector.
When the communication trouble occurs between the 
PCU and the finisher, refer to the content of F1-00.
Trouble content 1) The motor lock signal is detected during rotation 
of the controller fan motor.
2) The motor lock signal is detected during rotation 
of the HDD fan motor.
Section MFP
Case 1 Cause Fan motor trouble
Check 
and 
remedyUse SIM6-2 to check the operation of the fan motor.
Case 2 Cause Harness connection trouble between the mother PWB 
and the fan motor.
Check 
and 
remedyCheck the harness and the connector between the 
mother PWB and the fan motor.
Case 3 Cause Control circuit trouble
Check 
and 
remedyReplace the controller PWB.
Case 4 Cause Mother PWB trouble.
Check 
and 
remedyReplace the mother PWB.
Trouble content When the paper exit cooling fan is operated, the fan 
operation signal is not detected within the specified 
time.
Section PCU
Case 1 Cause Fan connector disconnection
Check 
and 
remedyCheck the harness and the connector between the 
PCU PWB and the fan.
Case 2 Cause Fan does not rotate because of other trouble.
Check 
and 
remedyUse SIM6-2 to check that the fan is rotation actually. 
						

							MX-2300/2700 N/G  SELF DIAG AND TROUBLE CODE  8 – 24
 
L4-32 Power cooling fan/ozone exhaust fan
trouble
 
L6-10 Polygon motor lock detection
 
L8-01 No full wave signal
 
L8-02 Full wave signal width abnormality
 
L8-20 Power controller communication trou-
ble
 
PC--- Personal counter not installed
 
U1-01 Battery trouble
 
U2-00 EEPROM read/write error 
(MFP detection)
 
U2-05 HDD/Flash/EEPROM data discrepancy
Trouble content When the power cooling fan/ozone exhaust fan is 
operated, the fan operation signal is not detected 
within the specified time.
Section PCU
Case 1 Cause Power cooling fan or ozone exhaust fan connector 
disconnection
Check 
and 
remedyCheck the harness and the connector between the 
PCU PWB and the fan.
Case 2 Cause Fan does not rotate because of other trouble
Check 
and 
remedyUse SIM6-2 to check that the fan is actually rotating.
Trouble content It is judged that the LSU polygon motor lock signal is 
not outputted, and the lock signal is checked after 7 
sec from starting rotation of the polygon motor and it is 
judged that the polygon motor does not rotate 
properly.
Section LSU
Case 1 Cause Disconnection of the LSU connector or the LSU inside 
harness, or breakage
Check 
and 
remedyCheck connection of the harness and the connector.
If the trouble cannot be removed, replace the LSUcnt 
PWB or the LSU.
Case 2 Cause Polygon motor trouble, LSU PWB trouble
Check 
and 
remedyUse SIM61-1 to check the operation of the polygon 
motor.
If the trouble cannot be removed, replace the LSUcnt 
PWB or the LSU.
Trouble content No full wave signal is detected.
Section PCU
Case 1 Cause Harness trouble
Check 
and 
remedyCheck connection of the harness and the connector.
Case 2 Cause Power unit trouble
Check 
and 
remedyReplace the power unit.
Case 3 Cause PCU PWB trouble
Check 
and 
remedyReplace the PCU PWB.
Trouble content The full wave signal is judged as frequency 
abnormality. (The detection frequency is judged as 
65Hz or above or 45Hz or less.)
Section PCU
Case 1 Cause Harness trouble
Check 
and 
remedyCheck the harness and the connector connection.
Case 2 Cause Power unit trouble
Check 
and 
remedyReplace the power unit.
Case 3 Cause PCU PWB trouble
Check 
and 
remedyReplace the PCU PWB.Trouble content Communication establishment error/Framing/Parity/
Protocol error
Section MFP
Case 1 Cause Connector connection trouble between the mother 
board PWB and the MFPcnt PWB.
MFPcnt PWB mother board connector pin breakage
Check 
and 
remedyCheck the connector connection between the mother 
board PWB and the MFPcnt PWB. Check grounding 
of the machine. 
Case 2 Cause Mother PWB trouble
Check 
and 
remedyReplace the mother PWB.
Case 3 Cause Mother PWB jumper error
Check 
and 
remedySet the mother PWB jumper to the Default side.
Trouble content The personal counter is not installed.
Section MFP
Case 1 Cause The personal counter is not installed.
Check 
and 
remedyInstall the personal counter.
Trouble content Backup SRAM battery voltage fall
Section MFP
Case 1 Cause 1) Battery life
2) Battery circuit abnormality
Check 
and 
remedyCheck that the battery voltage is about 2.5V or above.
Trouble content EEPROM device read/write error
Section MFP
Case 1 Cause EEPROM device trouble
Check 
and 
remedyReplace the EEPROM device.
Case 2 Cause EEPROM device contact failure
Check 
and 
remedyCheck that EEPROM device is properly inserted.
Case 3 Cause Device access error due to electrical noises
Check 
and 
remedyReplace the MFPcnt PWB.
Trouble content A HDD or Flash memory for user authentication 
different from that used before turn off the power is 
installed.
Section MFP
Case 1 Cause HDD replacement or Flash memory replacement
Check 
and 
remedyInitialize the authentication information with SIM16, 
and import the backup data (exported data) if any. 
						

							MX-2300/2700 N/G  SELF DIAG AND TROUBLE CODE  8 – 25
 
U2-10 SRAM user authentication index
check sum error
 
U2-11 EEPROM check sum error 
(MFP detection)
 
U2-22 SRAM memory check sum error
 
U2-23 MFPC section SRAM memory 
individual data check sum error
 
U2-24 SRAM memory user authentication
counter check sum error
 
U2-25 Flash memory user authentication
counter check sum error
 
U2-30 Serial number data discrepancy 
(MFP ↔ PCU)
 
U2-50 HDD section individual data check
sum error
Trouble content User index information (basic data of user 
authentication) check sum error on the SRAM
Section MFP
Case 1 Cause 1) SRAM trouble
2) Hang-up of the control circuit due to electrical 
noises
3) MFPcnt PWB SRAM access circuit trouble
Check 
and 
remedyUse SIM16 to cancel U2 trouble.
Trouble content Counter information check sum error on the EEPROM
Section MFP
Case 1 Cause 1) EEPROM device trouble
2) EEPROM device contact failure
3) Device access error due to electrical noises
Check 
and 
remedyUse SIM16 to cancel U2 trouble.
Trouble content MFPcnt PWB SRAM memory check sum error
Section MFP
Case 1 Cause SRAM trouble
Check 
and 
remedy1) Initialize the communication management table 
registered in SRAM and the FAX soft switch.
2) Since the registered contents have been deleted, 
register them again.
Case 2 Cause Control circuit hang-up due to electrical noises
Check 
and 
remedyUse SIM16 to cancel U2 trouble.
Case 3 Cause MFPcnt PWB SRAM access circuit trouble
Check 
and 
remedyReplace the MFPcnt PWB.
Trouble content MFPcnt PWB SRAM memory individual data check 
sum error (Communication management table, sender 
registration data, etc.)
Section MFP
Case 1 Cause SRAM trouble
Check 
and 
remedy1) Turn OFF/ON the power to initialize the data 
related to the check sum error automatically.
2) Since the registered contents have been deleted, 
register them again.
Case 2 Cause Control circuit hang-up due to electrical noises
Check 
and 
remedyUse SIM16 to cancel U2 trouble.
Case 3 Cause MFPcnt PWB SRAM access circuit trouble
Check 
and 
remedyReplace the MFPcnt PWB.Trouble content Check sum error of the user counter on SRAM
Section MFP
Case 1 Cause 1) SRAM trouble
2) Control circuit hang-up due to electrical noises
3) MFPcnt PWB SRAM access circuit trouble
Check 
and 
remedyUse SIM16 to cancel U2 trouble.
Trouble content Check sum error of the user authentication counter on 
FLASH
Section MFP
Case 1 Cause Flash trouble. Control circuit hang-up due to electrical 
noises
MFPcnt PWB FLASH access circuit trouble.
Check 
and 
remedyUse SIM16 to recalculate the check sum of the user 
counter and save the normal sum value. 
Trouble content The serial number stored in the PCU differs from that 
stored in the MFP.
Section MFP
Case 1 Cause EEPROM is not changed  when the PCU/MFPcnt 
PWB is replaced.
Check 
and 
remedy1) Check that EEPROM is properly set.
2) Check that EEPROM on the previous PWB is 
inserted to the newly installed PWB.
Trouble content MFPcnt HDD individual data check sum error (One-
touch, group, program, etc.)
Section MFP
Case 1 Cause Write/read error to/from HDD
Check 
and 
remedy1) Turn OFF/ON the power to initialize the data 
related to the check sum error contents.
2) Since the registered contents have been deleted, 
register them again.
3) If the trouble is not canceled, replace the HDD.
Case 2 Cause Control circuit hang-up due to electrical noises
Check 
and 
remedyUse SIM16 to cancel U2 trouble.
Case 3 Cause MFPcnt PWB HDD access circuit trouble
Check 
and 
remedyReplace the MFPcnt PWB. 
						

							MX-2300/2700 N/G  SELF DIAG AND TROUBLE CODE  8 – 26
 
U2-80 EEPROM read/write error 
(SCU detection)
 
U2-81 Adjustment value check sum error
(SCU detection)
 
U2-90 EEPROM read/write error 
(PCU detection)
 
U2-91 EEPROM (PCU) check sum error
 
U6-00 Desk communication trouble
 
U6-01 Tray 1 lift-up trouble
 
U6-02 Tray 2 lift-up trouble
 
U6-09 LCC lift motor trouble
Trouble content 1) EEPROM version error
2) Write error to EEPROM
Section Scanner
Case 1 Cause EEPROM trouble, installation of EEPROM which is 
not initialized
Check 
and 
remedyCheck that EEPROM is properly set.
Case 2 Cause SCU PWB EEPROM access circuit trouble
Check 
and 
remedyTo avoid deletion of the counter data/adjustment data, 
use the simulation to save the counter/adjustment 
values. (If there is a printer option, execute SIM22-1 to 
save the counter data and the adjustment values.) 
Replace the SCU PWB. Use SIM16 to cancel the 
trouble.
Trouble content EEPROM (SCU) check sum error
Section Scanner
Case 1 Cause Control circuit hang-up due to electrical noises
Check 
and 
remedyUse SIM16 to cancel U2 trouble.
Case 2 Cause EEPROM trouble
Check 
and 
remedyTo avoid deletion of the counter data/adjustment data, 
use the simulation to save the counter/adjustment 
values. (If there is a printer option, execute SIM22-1 to 
save the counter data and the adjustment values.) 
Replace the SCU PWB. Use SIM16 to cancel the 
trouble.
Case 3 Cause SCU PWB EEPROM access circuit trouble
Check 
and 
remedyCheck that EEPROM is properly set.
Trouble content EEPROM version error, write error to EEPROM
Section PCU
Case 1 Cause EEPROM trouble,  installation of EEPROM which is 
not initialized
Check 
and 
remedyCheck that EEPROM is properly set.
Case 2 Cause PCU PWB EEPROM access circuit trouble
Check 
and 
remedyTo avoid deletion of the counter data/adjustment data, 
use the simulation to save the counter/adjustment 
values. (If there is a printer option, execute SIM22-1 to 
save the counter data and the adjustment values.) 
Replace the PCU PWB. Use SIM16 to cancel the 
trouble.
Trouble content Check sum error of adjustment value (PCU)
Section PCU
Case 1 Cause Control circuit hang-up due to electrical noises
Check 
and 
remedyUse SIM16 to cancel the trouble.
Case 2 Cause EEPROM trouble.
Check 
and 
remedyCheck that EEPROM is properly set.
Case 3 Cause PCU PWB EEPROM access circuit trouble
Check 
and 
remedyTo avoid deletion of the counter data/adjustment data, 
use the simulation to save the counter/adjustment 
values. (If there is a printer option, execute SIM22-1 to 
save the counter data and the adjustment values.) 
Replace the PCU PWB.
Trouble content Desk communication error, communication line test 
error after turning on the power or canceling the 
exclusive simulation
Section PCU
Case 1 Cause Connector and harness connection trouble or 
disconnection, desk control PWB trouble, control 
PWB (PCU) trouble, malfunction due to electrical 
noises
Check 
and 
remedyCancel the trouble by turning OFF/ON. Check the 
connector and the harness of the communication line.
Trouble content DLUD1 does not turn ON within the specified time.
Section PCU
Case 1 Cause DLUD1 sensor trouble, tray 1 lift-up motor trouble, 
desk PWB, lift-up unit, paper feed unit harness 
connection trouble
Check 
and 
remedyCheck DLUD1 and its harness and connector. Check 
the lift-up unit.
Trouble content DLUD2 does not turn ON within the specified time.
Section PCU
Case 1 Cause DLUD2 sensor trouble, tray 2 lift-up motor trouble, 
desk PWB, lift-up unit, paper feed unit harness 
connection trouble
Check 
and 
remedyCheck DLUD2 and its harness and connector. Check 
the lift-up unit.
Trouble content • The encoder input value is not changed in 0.13sec 
(1st time)/0.5sec (2nd time and later) after rotation 
of the motor.
• The motor is rotated for 18sec or more.
• The encoder is changed after passing a certain 
time from stopping the motor. (2sec, 10 count or 
more)
Section PCU
Case 1 Cause Sensor trouble, LCC control PWB trouble, gear 
breakage, lift motor trouble
Check 
and 
remedyUse SIM4-2 and 4-3 to check the operation of the 
sensor and the lift motor. Use SIM15 to cancel the 
trouble. 
						

							MX-2300/2700 N/G  SELF DIAG AND TROUBLE CODE  8 – 27
 
U6-10 Desk transport motor trouble
 
U6-20 LCC communication trouble
 
U6-21 LCC transport motor trouble
 
U6-22 LCC 24V power abnormality
 
U6-50 Desk incompatibility trouble
 
U6-51 LCC incompatibility trouble
 
UC-02 CPT-ASIC abnormality
 
UC-20 Document control module trouble
Trouble content Desk transport motor operation trouble
Section PCU
Case 1 Cause Motor lock, motor RPM abnormality, overcurent to the 
motor, console finisher control PWB trouble
Check 
and 
remedyUse SIM 4-3 to check the operation of the desk 
transport motor.
Trouble content LCC communication error. Communication line test 
error after turning ON the power or canceling the 
exclusive simulation. LCC and machine model codes 
discrepancy error
Section PCU
Case 1 Cause Connector and harness connection trouble or 
disconnection, LCC control PWB trouble, control PWB 
(PCU) trouble, malfunction due to electrical noises
Check 
and 
remedyTurn OFF/ON the power to cancel the trouble. Check 
the connector and the harness of the communication 
line.
Trouble content • The encoder input value is not changed in 0.06sec 
after turning on the motor.
• The encoder input value is changed after a certain 
time from turning OFF the motor. (After 5sec, count 
is made for 0.1sec to get 100 or more count.)
Section PCU
Case 1 Cause Motor lock, motor RPM abnormality, an overcurrent to 
the motor, LCC control PWB trouble
Check 
and 
remedyUse SIM4-3 to check the operation of the transport 
motor.
Trouble content DC24V power is not supplied to LCC.
Section PCU
Case 1 Cause Connector and harness connection trouble or 
disconnection, LCC control PWB trouble, power unit 
trouble
Check 
and 
remedyCheck the connector and the harness of the power 
line. Check that the power unit and the LCC control 
PWB is of 24V.
Trouble content Detection of desk connection incompatible with the 
MX-2300/2700 **
Section PCU
Case 1 Cause Connection of a desk which is incompatible with the 
MX-2300/2700 ** is detected.
Check 
and 
remedyConnect the MX-DEX1/DEX2.
Trouble content Detection of LCC connection which is incompatible 
with the MX-2300/2700 **.
Section PCU
Case 1 Cause Connection of the LCC, which is incompatible with the 
MX-2300/2700 ** is detected.
Check 
and 
remedyConnect the MX-LCX1.Trouble content CPT-ASIC access error (When the ASIC does not 
operate normally.)
Section Scanner
Case 1 Cause CPT-ASIC abnormality, SCU PWB abnormality
Check 
and 
remedyTurn OFF/ON the power several times. If the trouble 
still occurs, replace the SCU PWB or the CPT-ASIC.
Trouble content Communication error between SCU and DOCC
Communication line test error when turning on the 
power or after canceling an exclusion simulation.
Section Scanner
Case 1 Cause Connector or harness connection error or 
disconnection
Check 
and 
remedyCheck the connector and harness in the 
communication line.
Case 2 Cause Control PWB (SCU) trouble, DOCC PWB trouble.
Check 
and 
remedyReplace the SCU PWB or the DOCC PWB.
Case 3 Cause Malfunction due to electrical noises.
Check 
and 
remedyTurn OFF/ON the power to electrical cancel the 
trouble. 
						

							MX-2300/2700 N/G  MAINTENANCE  9 – 1 MX2700N
Service Manual [9] MAINTENANCE
1. Maintenance system table
✕: Check (Clean, replace, or adjust according to necessity.) {: Clean ▲: Replace U: Adjust ✩: Lubricate †: Shift the position.
Unit name Part nameMonochrome 
supply/
Mechanical 
partsWhen 
calling100
K200
K300
K400
K500
K600
K700
K800
K900
K1000
K11 0 0
K1200
KRemark/Refer to the 
Parts Guide. Block/Item No. (Only the replacement 
parts are described.) Color supply 60
K120
K180
K240
K300
K360
K
Drum 
peripheralDrum (BK) Monochrome 
supply▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲
Cleaner blade (BK)▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [24]-14)
Charging unit (BK)▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [24]-2)
Drum (C) Color supply▲▲▲▲ ▲ ▲
Cleaner blade (C)▲▲▲▲ ▲ ▲(P/G No.: [24]-14)
Charging unit (C)▲▲▲▲ ▲ ▲(P/G No.: [24]-2)
Side seal F/R (BK) Mechanical 
parts✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Toner reception seal 
(BK)✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Side seal F/R(C)✕✕✕✕ ✕ ✕
Toner reception seal 
(C)✕ ✕✕✕✕ ✕ ✕
Waste toner box✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Developing 
sectionDeveloper (BK) Monochrome 
supply▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲
DV seal (BK)▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [23]-42)
DV side seal F (BK)▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [23]-26)
DV side seal R (BK)▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [23]-15)
Toner filter▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [22]-37)
Developer (C) Color supply▲▲▲▲ ▲ ▲ 
Developer (M)▲▲▲▲ ▲ ▲
Developer (Y)▲▲▲▲ ▲ ▲
DV seal (C)▲▲▲▲ ▲ ▲(P/G No.: [23]-42)
DV side seal F/R (C)▲▲▲▲ ▲ ▲(P/G No.: [23]-26, 
[23]-15) 
Toner filter▲▲▲▲ ▲ ▲(P/G No.: [22]-37)
Toner cartridge (BK/
C/M/Y)Monochrome/
Color supplyUser replacement for every toner empty (or the specified traveling distance).
Bias pin/Connector Mechanical 
parts✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Unit name Part nameMonochrome 
supply/
Mechanical 
partsWhen 
calling100
K200
K300
K400
K500
K600
K700
K800
K900
K1000
K1100
K1200
KRemark/Refer to the 
Parts Guide. Block/Item No. (Only the replacement 
parts are described.)
LSU Dust proof glass Mechanical 
parts{ {{{{{{{{{ { { {
Cleaning base✕ ▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [2]-35)
Transfer 
sectionIntermediate 
transfer beltMechanical 
parts✕ ▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [26]-3)
Primary transfer 
roller✕✕✕▲✕✕▲✕✕▲✕✕▲(P/G No.: [27]-9)
(P/G No.: [28]-27)
Intermediate 
transfer blade✕ ▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [25]-19)
Belt drive gear✕ ▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [27]-13)
Primary transfer 
conduction collar✕ ▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [27]-8)
(P/G No.: [28]-25)
Transfer drive roller{{{{{{{{{ { { {
Transfer follower 
roller{{{{{{{{{ { { {
Tension roller{{{{{{{{{ { { {
Belt CL brush✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Y auxiliary roller{{{{{{{{{ { { {
Resist backup roller✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Secondary transfer 
belt✕✕✕▲✕✕▲✕✕▲✕✕▲(P/G No.: [30]-21)
Secondary transfer 
roller✕✕✕▲✕✕▲✕✕▲✕✕▲(P/G No.: [30]-6)
Secondary belt drive 
roller✕✕{✕✕{✕✕{✕✕{
Secondary belt 
tension roller✕✕{✕✕{✕✕{✕✕{ 
						

							MX-2300/2700 N/G  MAINTENANCE  9 – 2
Transfer 
sectionSecondary belt 
follower rollerMechanical 
parts✕✕{✕✕{✕✕{✕✕{
Secondary transfer 
idle gear✕✕✕▲✕✕▲✕✕▲✕✕▲(P/G No.: [29]-6)
Sensors (Process 
control resist 
sensors)✕{{{{{{{{{ { { {
Primary CL roller▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [26]-56)
Cleaner seal✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Cleaner seal R✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Transfer toner 
reception seal✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Fusing 
sectionUpper heat roller Mechanical 
parts✕ ✕▲✕▲✕▲✕▲✕ ▲ ✕ ▲(P/G No.: [32]-32)
Lower heat roller✕ ✕▲✕▲✕▲✕▲✕ ▲ ✕ ▲(P/G No.: [33]-15)
Upper heat roller 
gear✕ ✕▲✕▲✕▲✕▲✕ ▲ ✕ ▲(P/G No.: [32]-30)
Upper roller bearing✕ ✕▲✕▲✕▲✕▲✕ ▲ ✕ ▲(P/G No.: [32]-31)
Lower roller bearing✕ ✕▲✕▲✕▲✕▲✕ ▲ ✕ ▲(P/G No.: [33]-14)
Upper separation 
pawl✕ ✕▲✕▲✕▲✕▲✕ ▲ ✕ ▲(P/G No.: [32]-11)
Upper thermistor✕ ✕▲✕▲✕▲✕▲✕ ▲ ✕ ▲(P/G No.: [32]-18)
Lower thermistor✕ ✕▲✕▲✕▲✕▲✕ ▲ ✕ ▲(P/G No.: [33]-20)
Non-contact 
thermistor✕✕✕▲✕✕▲✕✕▲✕✕▲
Gears✕ ✩✩✩✩✩✩✩✩✩ ✩ ✩ ✩Specified position
Paper guides{ {{{{{{{{{ { { {
Fusing unit✕ ✕▲✕▲✕▲✕▲✕ ▲ ✕ ▲(P/G No.: [31]-901)
(P/G No.: [32]-901)
(P/G No.: [33]-901)
Filters Ozone filter PA Mechanical 
parts✕ ▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [47]-40)
Paper feed 
sectionPickup roller Mechanical 
parts{ {{{{{{{{{ { { {(P/G No.: [11]-40, 
[16]-33)
Paper feed roller{ {{{{{{{{{ { { {(P/G No.: [11]-41, 
[16]-29)
Separation roller{ {{{{{{{{{ { { {(P/G No.: [10]-4, 
[15]-37)
Torque limiter✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Transport 
section/
Paper exit 
reverse 
sectionPS follower roller Mechanical 
parts✕{{{{{{{{{ { { {
Transport rollers{ {{{{{{{{{ { { {
Discharge brush✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Paper exit filter
Gears✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕When checking, apply 
to the necessary 
positions (specified 
positions). 
Drive 
sectionGears (Grease) Mechanical 
parts✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕HANARL FL955R/
FLOIL G313S
When checking, apply 
to the necessary 
positions (specified 
positions). 
Shaft earth sections 
(Conduction grease)✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕When checking, apply 
to the necessary 
positions (specified 
positions). 
Belts✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Others Sensors Mechanical 
parts✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Image quality Mechanical 
parts✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Optical 
sectionMirror/Lens/
Reflector/CCDMechanical 
parts{ {{{{{{{{{ { { {
Table glass/
SPF glass{ {{{{{{{{{ { { {
Scanner lamp{ {{{{{{{{{ { { {
Rails✩ ✩✩✩✩✩✩✩✩✩ ✩ ✩ ✩Specified positions
Drive belt/
Drive wire✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
Unit name Part nameMonochrome 
supply/
Mechanical 
partsWhen 
calling100
K200
K300
K400
K500
K600
K700
K800
K900
K1000
K1100
K1200
KRemark/Refer to the 
Parts Guide. Block/Item No. (Only the replacement 
parts are described.)
1
: Dec. 15 20051 
						

							MX-2300/2700 N/G  MAINTENANCE  9 – 3
2. Details of maintenance
A. Drum peripheral
✕: Check (Clean, replace, or adjust according to necessity.) {: Clean ▲: Replace U: Adjust ✩: Lubricate †: Shift the position.
No.Part nameMonochrome 
supply/
Mechanical partsWhen 
calling100
K200
K300
K400
K500
K600
K700
K800
K900
K1000
K11 0 0
K1200
KRemark/Refer to the Parts Guide
. Block/Item No. (Only the replacement parts are 
described.) Color supply 60
K120
K180
K240
K300
K360
K
1 Drum (BK) Monochrome 
supply▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲
2 Cleaner blade 
(BK)▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [24]-14)
3 Charging unit 
(BK)▲▲▲▲▲▲▲▲▲ ▲ ▲ ▲(P/G No.: [24]-2)
4 Drum (C) Color supply▲▲▲▲ ▲ ▲
5 Cleaner blade (C)▲▲▲▲ ▲ ▲(P/G No.: [24]-14)
6 Charging unit (C)▲▲▲▲ ▲ ▲(P/G No.: [24]-2)       
7 Side seal F/R 
(BK)Mechanical 
parts✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
8 Toner reception 
seal (BK)✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
9 Side seal F/R(C)✕✕✕✕ ✕ ✕
10 Toner reception 
seal (C)✕ ✕✕✕✕ ✕ ✕
11 Waste toner box✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
3,67,98,10
2,5 7,9
1,4
11 
						

							MX-2300/2700 N/G  MAINTENANCE  9 – 4 The PM cycle means the replacement timing of periodic replace-
ment consumable parts which are required for maintaining the per-
formance.
The PM cycle is specified only for B/W output. For color output, it is
used as a reference value.
[Reason] Since the ratio of B/W to color differs depending on the
users operation scene which varies every day, the PM cycle can-
not be specified in a certain cycle for color output.
Replacement of a PM item at the recommended life is performed
by the dealers judgment or at PM call or at EM call.
Life end definition of a drum
When the drum counter exceeds the specified level of 100% black
output or 100% full color output, it is judged as life end.
However in practice, the number of rotations specifies quality
assurance policy of the tandem engine, where its wear cannot be
solely defined by the number of sheets but other operating condi-
tions including increased slip rotations depending on the ratio of B/
W to color and/or B/W printing in the color mode using the ACS.
The guaranteed number of rotations for the MX-2300/2700 series
drum is 715K.The drum life is affected by the number of sheets of one print job.
This is because the actual life is determined by rotations of the
drum. If the number of sheets of one print job is less than 3 sheets,
the number of rotations for page is increased. As shown in the fig-
ure below, therefore, the number of sheets of drum life varies
depending on the number of sheets of one print job.
As a reference of the drum life, Life meter can be checked with
SIM22-1 from the accumulated number of rotations of each drum.
Life meter indicates the remained life (%) of the drum with the
entire drum life as 100%.
(Example) If the used number of rotations is 550K: 
100(%) - 550 (K rotations) / 715 (K rotations) x 100 = 030 (%)
* For 100% full color output by the user, the life of the black drum
is 60K similarly to the life of the color drums.
Drum counter Number of rotations of drum
B/W Full color B/W Full color
Drum 100K 60K 715K rotations 715K rotations
Drum Life
0 50 100 150 200
012345
Number of sheets of one print job
DrumLife(-Kpages)
Black Drum
Color Drum