L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
L-125
d-Color MF4003/MF3303
16.1.2 Level History 1
TCR-C
TCR-M
TCR-Y
TCR-K
• Shows the T/C ratio. (in 0.01 % increments)
• Standard value: 5 to 8 %
• For your information, foggy background tends to occur at higher values and low image densities tend
to occur at lower values.
• Relevant components: TCR sensor
IDC
• Shows the IDC bare surface output value. (in 0.01 V increments)
• It should normally be around 3.0 V.
• The output range is 0 V to 3.4 V.
• Relevant components: IDC sensor, transfer belt unit
Middle heat temperature
Medium Heating Temperature
Heat edge temperature
• Shows the temperature of the fusing unit. (in 1 °C increments)
• Relevant components: Fusing unit
16.1.3 Level History 2
IDC Sensor Adjust 1
• Shows the IDC intensity adjustment value.
• The proper range is 100 to 500.
• The value becomes greater as the transfer belt unit has been used more.
• Relevant components: IDC sensor, transfer belt unit
1st Transfer Output Value
• Shows the latest 1st transfer output value.
• The proper range is 800 to 2600.
• Relevant components: Transfer belt unit, High voltage unit (HVPS)
2nd Transfer Output Value
• Shows the latest 2nd transfer output value.
Y119930-3
Service Manual
Summary of Contents for d-Color MF 4003
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