Kyocera Ecosys FS-6700, Service Manual

Page: 59 / 167

Troubleshooting
Print quality problems
6-40 FS-6700
Checking cassette size sensors
The printer tells the size of paper (cassette) to be fed by means of sensors on the
KP-614 and KP-616 boards. These sensors (switches) are activated by the pushing
pegs on paper cassettes in different paper sizes. If the sensors are not correctly
activated in a correct matrix of activation, paper jam or printing defects like above
may occur.
Figure 6.17 Cassette size sensors
Drum cleaning
This mode is meant to provide a manual means of drum cleaning in additioin to the
regular cleaning procedure made automatically in a photographics cycle. In this
mode, the drum turns for the period of approximately three minutes with no main
charging dispersed over the drum. Since the cleaning blade in the drum continu-
ously attempt to scrape soils and paper dust on its surface, the drum can be
brought in a clean state.
Table 6. 20 Papser size matrix
Paper size
Switch ID (See above.)
➊ ➋ ➌ ➍ ➎ ➏
A4L Off Off On Off Off On
Letter L Off On On Off Off On
B5 On Off Off Off Off Off
Legal size On On Off Off Off Off
A5 Off Off Off Off Off On
B4 On Off On Off Off Off
A3 Off Off On Off Off Off
Ledger Off On On Off Off Off
No cassette Off Off Off Off Off Off
Front side
Controller
box top cover
1 2 3
4
5
6 (Letter)
6 (A4)