Canon iR5055, Service Manual

Page: 447 / 646

Chapter 14
14-11
F-14-16
Be sure never to bring the clip [1] into contact with the sensor cover. Also, be sure to fit it sufficiently away from the sensor window.
7) Fit the door switch actuator into the door switch assembly.
8) Turn on the main power switch.
When you have turned on the main power switch, be sure never to touch the potential sensor.
9) Make the following selections in service mode:
COPIER>DISPLAY>DPOT>DPOT-K. Then, check to see that the indication during initial rotation is between 0 and 30.
MEMO:
1. If the result of Method 1 is as indicated but that of Method 2 is not, suspect soiling of the sensor and a fault in the potential measurement unit.
2. If the results of both Methods 1 and 2 are as indicated, assume that the signal path and operation from the potential sensor unit to the microprocessor on the DC
controller PCB are normal.
10) Turn off the main power switch.
11) Detach the potential sensor checking electrode.
12) Mount the potential sensor.
13) Turn on the main power switch.
14) Enable the potential control mechanism.
14.1.7 Potential Control System Conversion Table
0015-5287
iR5065 / iR 5055 / iR5075 / iR5075N / iR5065N / iR5055N
T-14-1
Control (V) Primary (uA) Developing bias
(V)
Pre-transfer (uA) Transfer (uA) Separation (uA)
3.00 1,400 0 0 440 100
3.05 1,391 3 -2 437 96
3.10 1,382 7 -4 434 92
3.15 1,373 11 -6 431 88
3.20 1,365 15 -8 429 85
3.25 1,356 18 -10 426 81
3.30 1,347 22 -12 426 77
3.35 1,338 26 -14 420 73
3.40 1,330 30 -16 418 70
3.45 1,321 33 -18 415 66
3.50 1,312 37 -20 412 62
3.55 1,303 41 -22 409 58
3.60 1,295 45 -24 407 55
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