Toshiba E-STUDIO520, Service Manual, Page: 235 / 592

March 2005 © TOSHIBA TEC e-STUDIO520/600/720/850 ADJUSTMENT
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3
[ 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.
Fig.3-26
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.
100%
A3
A
TEST MODE
100%
XXX
YYY
A3
TEST MODE
100%
A3
A
TEST MODE
[0][5]
[POWER]
[0][5]
[POWER]
Check that the measured value satisfies the following table.
Disconnect the digital testers and return the equipment to its original state.
[Digital keys]
[START]
: Enter the code.
[POWER] : OFF
[Digital keys]
[START]
: 290
[POWER] : After the message "WAIT" has disappeared, turn the power OFF and then back ON.
Code 210
Default value 102 (bit)
Code No.
Current set value
<Keys to press> <Display>
[CANCEL]
1
Developer bias Main charger
205
113 (bit)
Output value 500±22V -394±22V
Return to 1 to enter the
other adjustment code.