Size Sensor Assembly Failure - Xerox DOCUPRINT N17 Service Manual

7.4.15 Size Sensor Assembly Failure

1 Press the Size Sensor Assembly. Ensure the spring actuates the corresponding Paper Size
Switch.
NOTE: Conduct a visual inspection after removing the paper tray.
Y: Go to step 2.
N: Replace the relevant Size Sensor Assembly.
2 There is +4.77 to +5.44 VDC between P/J22-6 and P/J22-7 on the Print Engine Controller.
Y: Go to step 3.
N: Go to RAP 7.4.5 Low Voltage Power Supply (LVPS) Assembly Failure (+5VDC).
NOTE: Disconnect P/J15 from the Print Engine Controller and perform the analysis.
3 Check for the voltage between P/J22-3 (Tray 1), P/J22-4 (Tray 2), P/J22-5 (Tray 3), and P/J22-7
(SG) on the Print Engine Controller. The result is compatible with the value for the switch
combination shown in Table 7.4.15.1 Tray 1 and Table 7.4.15.2 Second and Third Trays .
Y: Replace the Print Engine Controller.
N: Go to step 4.
4 There is continuity between J22 on the Print Engine Controller and J118 on the Paper Size
Sensor Assembly.
Y: Replace the Size Sensor Assembly.
N: Replace the Feed Harness Assembly.
Size
No Cassette
B5
Statement
Legal 13"
Letter
Executive
A4
Legal 14"
Xerox DocuPrint N17 Service Manual
Table 7.4.15.1 Tray 1
Size SNR Voltage (V)
Vsnr
+5VDC Measured at P/J22-6
4.77V Min. 5.10V Typ.
0.00 0.00
1.01 1.10
1.67 1.81
2.13 2.30
2.47 2.67
2.74 2.95
2.95 3.18
3.12 3.36
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7-57
S2 S1
(*) (*)
5.44 Max.
0.00 0
1.19 1
1.95 0
2.48 1
2.88 0
3.18 1
3.41 0
3.60 1
Repair Analysis Procedures (RAPs)
S0
(*)
0 0
0 0
1 0
1 0
0 1
0 1
1 1
1 1