3-158 Phaser 5500 Printer Service Manual
6
Check continuity between the affected
Paper Size Switch and the Engine Logic
Board.
For Tray 4:
1. Disconnect P/J820 and P/J548.
2. Check for continuity at the following:
P/J820-1 <=> P/J548-14
P/J820-2 <=> P/J548-13
P/J820-3 <=> P/J548-12
P/J820-4 <=> P/J548-11
For Tray 5:
1. Disconnect P/J824 and P/J548.
2. Check for continuity at the following:
P/J824-1 <=> P/J548-7
P/J824-2 <=> P/J548-6
P/J824-3 <=> P/J548-5
P/J824-4 <=> P/J548-4
Are these conductive?
Go to Step 7. Repair the wiring.
7
Check for +3.3 V to the Paper Size Switch.
For Tray 4:
Is there +3.3 V across P/J820-1 (+) <=>
ground?
For Tray 5:
Is there +3.3 V across P/J824-1 (+) <=>
ground?
Replace the Paper
Size Switch for the
affected tray.
Replace the
Engine Logic
Board
(
page 8-89).
8
Check the Tray 4-5 PWB connection.
Are P/J413 and P/J541 connected?
Go to Step 9. Connect P/J413
and P/541.
9
Check continuity between the Tray 4-5
PWB and the Engine Logic Board.
1. Disconnect P/J541 and P/J413.
2. Check for continuity at the following:
P/J541-1 <=> P/J413-A1
P/J541-2 <=> P/J413-A2
P/J541-3 <=> P/J413-A3
P/J541-4 <=> P/J413-A4
P/J541-5 <=> P/J413-A5
P/J541-6 <=> P/J413-A6
P/J541-7 <=> P/J413-B1
P/J541-8 <=> P/J413-B2
P/J541-9 <=> P/J413-B3
P/J541-10 <=> P/J413-B4
P/J541-11 <=> P/J413-B5
P/J541-12 <=> P/J413-B6
Are these conductive?
Go to Step 10. Repair the wiring.
Paper Size Failure (Tray 4-5 Paper Size Switch) Troubleshooting Procedure
Step Actions and Questions Yes No
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