Ricoh FT7770 Service Manual page 622

10 August 1990
- Drum Shoe (P/N 54469116) -
Item
Charge
Pre-transfer ac
Transfer
Separation
D1 (Normal) dc -3.0 ± 2µA
Separation
D2 (Duplex) dc
Separation
D3 (Leading)
Pre-cleaning ac
Pre-quenching
NOTE: Before adjusting the drum current, please clean all the corona unit
casings with water and alcohol, then replace all the corona wires.
As for the charge corona wire, adjust the height of the wire as
necessary.
Beckman
330/3030
dc +67.5 ± 2µA
+48.0 ± 4µA
dc -29.0 ± 2µA
dc +14.0 ± 2µA
ac +40.0 ± 4µA
+40.0 ± 4µA
ac
-2.0 ± 2µA
ac +47.0 ± 4µA
dc -6.0 ± 2µA
+30.0 ± 4µA
dc -15.0 ± 2µA
dc + 7.0 ± 4µA
Beckman 330B Beckman
Fluke 8062/ 330/3030
8062A
+67.5 ± 2µA
+74.0 ± 2µA
+38.0 ± 4µA +48.0 ± 4µA
-29.0 ± 2µA -31.0 ± 2µA
+14.0 ± 2µA
+16.0 ± 2µA
+40.0 ± 4µA +40.0 ± 4µA
-3.0 ± 2µA -4.0 ± 2µA
+40.0 ± 4µA +40.0 ± 4µA
-2.0 ± 2µA
-2.0 ± 2µA
+47.0 ± 4µA +47.0 ± 4µA
-6.0 ± 2µA -7.0 ± 2µA
+26.0 ± 4µA +30.0 ± 4µA
-15.0 ± 2µA -15.0 ± 2µA
+7.0 ± 4µA +7.0 ± 4µA
15-14
Beckman 330B
Fluke 8062/
8062A
+74.0 ± 2µA
+38.0 ± 4µA
-31.0 ± 2µA
+16.0 ± 2µA
+40.0 ± 4µA
-4.0 ± 2µA
+40.0 ± 3µA
-2.0 ± 2µA
+47.0 ± 4µA
-7.0 ± 2µA
+26.0 ± 4µA
-15.0 ± 2µA
+ 7.0 ± 4µA