7 Adjustment VJ-1604 Maintenance Manual
Rev.-05 7-42
• When you adjust the sensor sensitivity, note the followings:
• Perform work in a location where external light from sunlight and other lighting will not affect
the sensor.
• During media adjustment, lower the lever so that the media is in contact. If the media is not
securely held, the sensor detection accuracy may be adversely affected.
• When operating the volume on the main board assembly, use a non-conductive screwdriver.
• If a conductive screwdriver touches electronic parts on the main board or metal components
such as the frame, there will be a possibility that a short circuit will occur.
7.10.1 Jigs and Tools
The following jigs and tools are required for P_EDGE sensor sensitivity adjustment.
• Test media: MF-3G (A4)
"8.4 Jigs and Tools" p.8-5
7.10.2 Adjustment Procedure
To adjust the P_EDGE sensor, follow the steps below.
The adjustment parameters are as follows;
• HIGH level (with media): 216 to 226
• LOW level (without media): 0 to 80
1. Remove the board box cover 64.
"4.4.1 Opening Board Box 64" p.4-40
Start the self-diagnosis function before setting the test media. Otherwise, the suction fan does not
rotate and you cannot get correct setting value.
2. Start the system in self-diagnosis function mode.
"5.2.2 Starting Up" p.5-4
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