Xerox 8850 Service Manual

03/2003
2-19
8850/ 510DP
Generic Sensor RAP, Generic Switch RAP
Status Indicator RAPs
Figure 1 Sensor (Generic)
Generic Switch RAP
Initial Actions
NOTE: This procedure can be used to check any switch. Due to the generic format of this RAP
there will be no specific ADJ, PL or Diagnostic codes identified. The PWB names, voltages,
connectors, and pin numbers are fictitious. Refer to the appropriate BSD for the actual names
and numbers
Procedure
(Figure 1): Enter DIAGNOSTICS (General Procedures). Enter code [xxxx] to test the switch
(Refer to appropriate BSD for the specific code). Actuate the switch. The switch toggles
from H to L or from L to H.
YN
The message display indicates LOW all the time.
YN
Actuate the switch. The voltage at J1-1 (use the actual connector/pin number
from the appropriate BSD) goes to less than 0.4 VDC.
YN
Check the wiring between the switch and the Main PWB (A2).
If the wiring is OK, replace the switch.
Replace the Main PWB (A2) (PL X.X)
Replace the Switch (PL X.X)
The switch and its circuit appear to be operating normally. check the adjustment or alignment
of the switch.
Figure 1 Switch (Generic)

Xerox 8850 Specifications

General

Brand	Xerox
Model	8850
Category	Printer
Language	English