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FO-2970MU
2 – 2
2
DC bias output voltage adjustment
Adjust VR2 so that the output voltage is –310V
±
5V
For measurement, use the high voltage tester (effective value me-
ter).
VR1 (MC output voltage adjustment volume)
+
–
DC-Bias
Output voltage check
VR2
(DV bias output adjustment volume)
DC-Bias
Output voltage check
–
+
DRUM
DC-Bias
3
Transfer charger voltage check
After MC output voltage adjustment and DC bias output voltage ad-
justment, check transfer charger voltage.
Check that the output voltage is +3200V ~ +3700V.
For measurement, use a high voltage tester (effective value meter).
Transfer charger
Output voltage check
+
–
DRUM
D7
D8
Note: For measurement, do not remove Printer PWB from the bottom
plate.
VR1 (MC output voltage adjustment volume)
+
–
Transfer changer
Output voltage check
Fig.3
Fig.4
Содержание FO-2970M
Страница 70: ...FO 2970MU 6 10 Control PWB parts layout Top side ...
Страница 71: ...FO 2970MU Control PWB parts layout Bottom side 6 11 ...
Страница 73: ...FO 2970MU 6 13 TEL LIU and Hook SW PWB parts layout Top side ...
Страница 74: ...FO 2970MU 6 14 TEL LIU and Hook SW PWB parts layout Bottom side ...
Страница 77: ...FO 2970MU 6 17 Printer PWB parts layout ...