Kyocera Mita FS-6750 Service Manual page 139

Troubleshooting
Diagnostic
Figure 6.2 Falser error—Top cover open
FS-6750
False error
[Top cover
open]
Is #11 (TCOVER)
of CN1 on KP-628
low?
Yes
Connect tester to #11
of CN22 on KP-904.
Is #11
No
low?
Yes
Replace KP-628.
Replace KP-904.
6-19
No
Replace KP-628
board.