Transfer Corona - Ricoh FT7770 Service Manual

30 April, '89

4. Transfer Corona

OPTIMUM VALUE:
Position the drum shoe [A] in the center and align it with the transfer
1.
corona unit [B] as shown.
2. Select the dc µA range on the digital multimeter.
3. Turn on the main switch and the transfer corona using SP
4. Adjust the transfer corona current by turning VR "T1" [C] and "T2" [D]
on the transfer/separation power pack.
10 seconds.) Make sure that the application switch is at the "Plain Paper"
position and then adjust the T1 current.
switch in the "Translucent Paper" position and adjust the T2 current.
5. Remove the drum shoe, reinstall all parts, and check copy quality.
Tl: 14.0±0.5µA
T2: 14.0±0.5µA
(Let the reading stabilize for
Next, set the application
5-82
12-1.