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Repair Analysis Procedures (RAPs)
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Xerox DocuPrint N17 Service Manual
7.3.2 “Laser Fail - Power Off/On” Message (U2)
NOTE: Refer to Figure 7.3.2.1 U2 Message Troubleshooting Schematic while performing this RAP.
1 The Laser Scanner Motor is spinning after executing the Test Print Mode (Diagnostic Mode 2).
NOTE: If you find it difficult to hear the Scanner Motor spinning, disable the Main Motor by disconnecting
P/J14 from it.
Y: Go to step 2.
N: Go to step 11.
2 There is +5VDC between P/J18-8 and P/J18-12.
Y: Go to step 5.
N: Go to step 3.
3 There is +5VDC between P/J25-2 and P/J25-6.
Y: Replace the Print Engine Controller.
N: Go to step 4.
4 There is +5VDC between P/J12-2 and P/J12-6.
Y: Replace the LVPS.
N: Go to
RAP 7.4.5 Low Voltage Power Supply (LVPS) Assembly Failure (+5VDC).
5 There is +5VDC between P/J18-13 (5V-LD) and P/J18-12 (SG).
Y: Go to step 14.
N: Go to step 6.
6 There is +5VDC between P/J112-1 (5V-LD) and P/J112-2.
Y: Replace the Laser Assembly.
N: Go to step 7.
7 There is +5VDC between P/J11-13 and P/J12-5.
Y: Go to step 8.
N: Go to
RAP 7.4.5 Low Voltage Power Supply (LVPS) Assembly Failure (+5VDC).
8 Refer to Figure 7.3.2.1, and check for continuity between P/J112-1 and P/J11-13. There is an
open circuit.
Y: Replace the open component.
N: Go to step 9.
9 There is +24VDC between P/J18-6 and P/J18-5.
Y: Go to step 10.
N: Go to
RAP 7.4.7 Low Voltage Power Supply (LVPS) Assembly Failure (+24VDC).
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