1AF
1-3-13
Surface potential correction control
The drum surface potential is corrected for the external temperature and humidity. If the
external temperature is 24°C/75.2°F or less and the absolute humidity exceeds 25.0 g/m
3
,
the drum surface potential is corrected as in the table bellow. The external temperature and
relative humidity are detected by the external temperature thermistor (ETTH) and humidity
sensor (HUMSENS) and the absolute humidity is calculated from these values. The surface
potential is corrected by varying the grid control voltage (GRID CONT) output from the main
PCB (MPCB) to the high-voltage transformer PCB (HVTPCB).
Table 1-3-1
Surface potential correction value vs. absolute humidity
Absolute
humidity
(g/m
3
)
Correction
value
(V)
Absolute
humidity
(g/m
3
)
Correction
value
(V)
Absolute
humidity
(g/m
3
)
Correction
value
(V)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
18.0
18.5
19.0
19.5
20.0
20.5
21.0
21.5
22.0
22.5
23.0
23.5
24.0
24.5
25.0
25.5
26.0
26.5
27.0
27.5
28.0
28.5
29.0
29.5
30.0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
–4
–8
–12
–16
–20
–24
–28
–32
–36
–40
Summary of Contents for DC-1560
Page 1: ...DC 1560 2050 KME S M SERVICE MANUAL Published in Oct 99 841AF110 DC 1560 2050 DC 1560 2050...
Page 3: ...SERVICE MANUAL DC 1560 2050...
Page 13: ...1 1 7 1AF CONTENTS 1 2 Handling Precautions 1 2 1 Drum 1 2 1 1 2 2 Developer and toner 1 2 1...
Page 15: ...1 1 11 1AF CONTENTS 2 1 Electrical Parts Layout 2 1 1 Electrical parts layout 2 1 1...
Page 27: ...DC 1560 2050 KME S M I Theory and Construction Section THEORY AND CONSTRUCTION SECTION I...
Page 33: ...1 1 7 1AF CONTENTS 1 2 Handling Precautions 1 2 1 Drum 1 2 1 1 2 2 Developer and toner 1 2 1...
Page 78: ...DC 1560 2050 KME S M ELECTRICAL SECTION II II Electrical Section...
Page 79: ...1 1 11 1AF CONTENTS 2 1 Electrical Parts Layout 2 1 1 Electrical parts layout 2 1 1...
Page 98: ...DC 1560 2050 KME S M III Set Up and Adjustment Section III SET UP AND ADJUSTMENT SECTION...
Page 169: ...1AF 3 3 13 End Yes No Press the stop clear key Exit simulation mode Adjust for another mode...
Page 201: ...1AF 3 3 45 End Yes Press the stop clear key Exit simulation mode No Adjust for another mode...