Diagnostic Information
19
4039-1XX
sure the duplex table cover (floor) is correctly snapped in place at its
front and rear and that the gear block assembly is correctly snapped
into the bottom cover. Run duplex diagnostics tests #1 and #2 to
make sure there is no slippage in the paper path. Make sure the
flags of the duplex unit input and exit sensors move freely.
While the 23 is displayed, press and hold the Return button while
pressing the second button from the top, and note the 7th and 8th
digits from the left. If they are 01 or 03, there is a problem with the
duplex input sensor signal. Remove the duplex top cover and table
cover. Measure the voltage on JP6-3 of the duplex system board; it
should fluctuate from 0 to +5VDC as you toggle the sensor flag.
Check the sensor cable continuity. If the sensor and the cable are
good, replace the duplex system card.
If the 7th and 8th digits are 04, there is an exit sensor problem.
Remove the duplex top cover and table cover. Remove the paper
tray so you can reach the sensor. Measure the voltage on JP6-8 of
the duplex board; it should fluctuate from 0 to +5VDC as you toggle
the sensor. Check the sensor cable continuity. If the sensor and the
cable are good, replace the duplex system card.
Fan (927 Error)
The fan should run continuously when the printer is powered up,
unless the printer is in Power Saver mode. Check that the fan rotates
freely when spun manually and that the cable connections to the fan
are OK. The voltage at (10P/10R/12R/12C/12L) J5-6 (16L) J3-6
should be approxi24VDC when the top cover is up. Short
pin 6 to ground to test the fan; if the fan does not run check the
continuity of the fan cable before replacing the fan. A bad fan can
pull down the +24V line even if it runs; check that (10P/10R/12R/
12C/12L) J5-7 (16L) J3-7 has b21 and +26VDC when the
fan is running; if it does not, replace the system board.
Summary of Contents for 4039 - B/W Laser Printer
Page 69: ...Repair Information 55 4039 1XX ...
Page 77: ...Repair Information 63 4039 1XX ...
Page 79: ...Repair Information 65 4039 1XX ...
Page 83: ...Repair Information 69 4039 1XX ...
Page 85: ...Repair Information 71 4039 1XX D B C A ...
Page 87: ...Repair Information 73 4039 1XX ...
Page 91: ...Repair Information 77 4039 1XX B A ...
Page 93: ...Repair Information 79 4039 1XX F E B F D C ...
Page 105: ...Repair Information 91 4039 1XX ...
Page 113: ...Repair Information 99 4039 1XX ...
Page 116: ...102 Service Manual 4039 1XX Gear Train ...
Page 117: ...Connector Locations 103 4039 1XX HVPS ...
Page 120: ...106 Service Manual 4039 1XX System Board Connectors 10R 12R 12L ...
Page 122: ...108 Service Manual 4039 1XX System Board Connectors 16L ...
Page 124: ...110 Service Manual 4039 1XX System Board Connectors 10P J21 J14 J11 ...
Page 132: ...118 Service Manual 4039 1XX Toner Shield to Lower Frame Load Box Shaft to Upper Frame ...
Page 139: ...Parts Catalog 125 4039 1XX Assembly 1 Covers 1 14 2 1A 12 1B 17 10 4 3 16 15 11 9 8 27 5 6 7 ...
Page 151: ...Parts Catalog 137 4039 1XX Assembly 4 Printhead System Board 9 2 7 6 4 3 1 8B 8A 8 ...
Page 157: ...Parts Catalog 143 4039 1XX Assembly 6 Paper Feed Alignment Gears ...
Page 161: ...Parts Catalog 147 4039 1XX Assembly 8 Standard Paper Tray 200 sheet 1 5 2 3 4 6 ...
Page 163: ...Parts Catalog 149 4039 1XX Assembly 9 Paper Tray 500 Sheet 5A ...
Page 165: ...Parts Catalog 151 4039 1XX Assembly 10 Base for Paper Drawer 500 Sheet 4 4 2 1 3 ...
Page 173: ...Parts Catalog 159 4039 1XX Assembly 13 Electronics 5A 7 13 6 9 11 5 4A 4 3 18 1 18 23 21 22 ...
Page 177: ...Parts Catalog 163 4039 1XX Assembly 14 Transfer Roll ...
Page 181: ...Parts Catalog 167 4039 1XX Assembly 16 Envelope and 100 Sheet Auxiliary Feeder ...