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Xerox DocuPrint N17 Service Manual
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Repair Analysis Procedures (RAPs)
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.
Table 7.4.15.1 Tray 1
Size
Size SNR Voltage (V)
Vsnr
S2
(*)
S1
(*)
S0
(*)
+5VDC Measured at P/J22-6
4.77V Min.
5.10V Typ.
5.44 Max.
No Cassette
0.00
0.00
0.00
0
0
0
B5
1.01
1.10
1.19
1
0
0
Statement
1.67
1.81
1.95
0
1
0
Legal 13”
2.13
2.30
2.48
1
1
0
Letter
2.47
2.67
2.88
0
0
1
Executive
2.74
2.95
3.18
1
0
1
A4
2.95
3.18
3.41
0
1
1
Legal 14”
3.12
3.36
3.60
1
1
1
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