Tech Service Bulletin No. A172/A199 – 016
Page 9 of 17
1.
Connect a meter as pictured and set it to read greater than 400 volts DC voltage.
2.
Make a single color (black) copy and observe that your meter indicates -400 volts.
3.
If adjustment is required, adjust VR60.
NOTE: When Adjustment Is Complete, Reset All SP Modes To Previous Settings.
If adjustment cannot be achieved, the following are possible causes:
•
High Voltage Supply - B
•
Development Bias Terminal - C
•
Development Bias Terminal - M
•
Development Bias Terminal - Y
•
Development Bias Terminal - K
•
Interface Board - 2
•
Main Control board
Continued…
Red meter lead to
Development Bias
CN (B4).
Black meter
lead to frame
ground.
VR60
DO NOT
ADJUST
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