239
KX-MB2230JT/ KX-MB2270JT/ KX-MB2515JT/ KX-MB2545JT/ KX-MB2575JT/ DP-MB310JT
12.3.18. High Voltage Value Check Point
Measurement Procedure
1. Turn off the power supply.
2. Remove the right cover of the main unit and then remove the protection cover of high voltage power supply. See Figure 1.
3. See Figure 2 for the high voltage value check point.
4. Set the drum and developing unit in the main unit. Close the front cover and then turn the power supply on. Be careful not to
touch the main board as it produces high voltage.
5. Let the tip of the high voltage probe touch the value point. At this time, be careful not to touch other parts of the main unit.
6. Remove the recording paper cassette. And then turn the service mode on and input 556.
7. Press SET. The main unit starts producing high voltage.
8. Press STOP when high voltage value check is finished. The main unit stops operating and producing high voltage.
9. Repeat step 5 to 8 to check the value of all points.
10. Put the right cover on when the value check is finished.
Each terminal’s output voltage
* FLUKE85(MULTIMETER)+HIOKI(HV PROVE 9014)or the equivalent should be used as the high voltage measuring instru-
ment.(Fig.6)
* As for measuring TRA, start measuring within 4 seconds after pressing the SET button. The output value will be changed in 4
seconds.
No. BIAS Name Rated Output Rated Output Range
1 CHG (Charge) 200μA 200±15μA Output voltage about 4.1~4.6KV
2 GRID(grid) 475V 475±10V
3 DEV (Developing) 230V 200~300V
4 TRA (Transfer) 785V 785±100V
Fig. 1
Fig. 2 Fig. 3
G R I D
DEV
TRA
Protection cover
CHG
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