Olivetti d-Color MF4003 Service Manual page 281

d-Color MF4003/MF3303
• If the value is Low: In IDC detection, the image density is judged as high, thus the Vg/Vdc value is to be adjust lower.
Display item
Vdc
Vg
LD Light Value
• Shows the LD light value of toner during print image formation.
Charging DC Output Value
• Shows the DC current value applied to the charging roller of toner during print image formation.
Charging AC Output Value 1
• Shows the AC voltage value applied to the charging roller of toner during print image formation.
Charging AC Output Value 2
• Shows the current value applied to the charging roller of toner during print image formation.
13.3 Level History 1
• To display TCR (T/C ratio), IDC/registration sensor output values, and fusing temperature.
• Used for troubleshooting of image problems.
TCR-C/-M/-Y/-K
IDC
Middle heat temperature
Medium Heating Temperature
Heat edge temperature
• *: "Reading taken last" means
• Density of toner of the latest image.
• When a test pattern is produced by pressing the Start key while level history 1 is being displayed.
13.4 Level History 2
• IDC Sensor (Transfer belt bare surface level) as adjusted through the image stabilization sequence and ATVC value.
• Used for troubleshooting of image problems.
Display item
IDC Sensor Adjust 1
1st Transfer Output Value
2nd Transfer Output Value
13.5 Temp. & Humidity
• Displays the temperature, humidity and PH temperature in the machine.
• Used as reference information when a malfunction occurs.
Temp-Inside
Humidity
PH temperature
13.6 CCD Check
• To display the D/A value of CCD clamp/gain for R, G, and B.
• Used for troubleshooting for the CCD sensor/CIS.
CCD Check
• CLAMP: 0 (remain static)
• GAIN: The maximum value and the minimum value of the output value should be within the range shown below.
Acceptable gain range
R
G
B
Y119930-3
Display item
Shows the intensity adjustment value of the IDC sensor. (0 to 1023)
Shows the first image transfer nearest output value. (0 to 2700)
Shows the second image transfer nearest output value. (-500 to 4500 V)
Display item
Reference value
Around -0 V to -800 V.
Around 0 V to -1600 V.
Shows the T/C output reading taken last. (*)
Shows the latest IDC data.
Displays the latest detected temperature of the heating temperature
sensor.
Displays the latest detected temperature of the heating roller
thermistor/Ctr.
Displays the latest detected temperature of the heating roller
thermistor/Edg.
Contents
0 to 80 °C in 1 °C increments
10 to 90 % in 1 % increments
0 to 100 °C in 1 °C increments
Minimum value
20
10
70
I-65
I SERVICE MODE > 13. State Confirmation
Contents
Contents
Maximum value
238
222
247
Service Manual