Toshiba e-STUDIO520 Service Handbook page 267

[ 4 ] Operation
Connect the digital testers as described in "[3] Connection", and follow the procedure on the next
page to measure the output from the main charger and developer bias charger.
<Keys to press>
[0][5]
[POWER]
1
[Digital keys] : Enter the code.
[START]
Check that the measured value satisfies the following table.
[CANCEL]
Return to 1 to enter the
other adjustment code.
[POWER] : OFF
Disconnect the digital testers and return the equipment to its original state.
[0][5]
[POWER]
[Digital keys] : 290
[START]
[POWER] : After the message "WAIT" has disappeared, turn the power OFF and then back ON.
Note: Note:
If the output value does not reach a specified level, replace the high-voltage transformer.
Remark:
Transfer bias ON timing adjustment(Not essential)
Depending on the environmental condition or the paper type, transfer ability for the paper leading edge
may decrease slightly and the poor image transfer may occur.
In this case, the image quality can be improved by adjusting the leading edge void width wider. Also, it
can be improved by changing the transfer bias ON timing using the setting code 08-841.
© 2005 - 2007 TOSHIBA TEC CORPORATION All rights reserved
<Display>
100%
TEST MODE
100%
TEST MODE
YYY
Current set value
Developer bias
Code
Default value
Output value
100%
TEST MODE
Fig. 3-26
3 - 35
06/09
A
XXX
Main charger
205 210
113 (bit) 102 (bit)
-394±22V -500±22V
A
e-STUDIO520/523/600/603/720/723/850/853
A3
A3
Code No.
A3
ADJUSTMENT
3