Toshiba e-STUDIO556 Service Manual page 448

6.8 Measurement at Replacement of High-Voltage Transformer
The high-voltage transformer does not need to be adjusted, however, when you check each value of
the main charger bias and the developer bias, it needs to be measured.
Note:
When carrying out the operation, be careful not to touch the electronic section because it is high
voltage.
6.8.1 Measurement
[ 1 ] Preparation
Items to check
Process Unit
Digital Function switch
Tester
Full-scale (range)
Remarks
How to turn ON the power
[ 2 ] Installing Jig
(1) Put in the door switch jig and slide it down.
(2) Rotate the jig counterclockwise by 90 degrees.
Door switch jig
e-STUDIO556/656/756/856/557/657/757/857
ADJUSTMENT
Main Charger
Take off from the equipment
Use a digital tester with an input resistance of 10 MΩ (RMS value) or higher.
Attach the door switch jig and start with the adjustment mode [05] while the
front cover opened.
Fig. 6-24
6 - 44
Developer Bias
Remove the connector of the auto
toner sensor, and release the
developer unit from the drum.
DC
1000 V
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