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687200Q
Service Manual
7-69
7.4.25 Electrical Noise
You were directed to this RAP because electrical noise emissions are interfering with the operation of the
printer. Use this RAP to diagnose and eliminate the electrical noise. Sometimes an arcing electrical
voltage can be the source of the problem. In light of this, particular attention should be directed to the
areas of the HVPS and line voltage.
Initial Actions
•
Remove all of the installed options in order to isolate this noise problem. Test the base
printer with no options installed. If the noise problem is eliminated, reinstall all of the optional
components, one at a time, and retest.
Determine which optional component is the source of the noise and replace that component.
•
When a cover or printer component is removed and replaced/reinstalled for testing purposes,
ensure that the cover or component is positioned securely into place with all of the proper
hardware (screws) before retesting. Some components, such as the HVPS and the
Transport Chute Assembly, are dependent on ground connections when properly positioned
and secured.
1 Ensure that the printer is properly grounded; that is, ensure that the line voltage is correctly
polarized and the proper ground connection is established between the printer and the wall
outlet.
Y: Go to step 2.
N: Inform the customer that the wall outlet must be properly polarized and that the proper
ground connection must be established.
2 There is an electrical device that might be generating noise around the printer.
Y: Move either the device or the printer to a different location.
N: Go to step 3.
3 There is resistive continuity measured across the Ground Diode Assembly (Fuser area) in one
direction and infinite resistance in the opposite direction.
Y: Go to step 4.
N: Replace the Fuser Assembly.
4 Visually check that the anode side of the Ground Diode Assembly is connected to a tab that is
brushing against the metal part of the Heat Roll.
Y: Go to step 5.
N: Replace the Fuser Assembly if the tab cannot be made to contact the metal tube of the
Heat Roll.
5 The Transport Chute Assembly is grounded to the printer chassis through a Transport Chute rear
mounting screw.
Y: Go to step 6.
N: Make sure that the screw securing the rear of the Transport Chute Assembly to the
printer chassis is secured tightly.
Содержание DR N17
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Страница 232: ...6 38 687200Q 13 MCU MAIN MOTOR 1 2 3 4 5 6 P J14 MAIN MOT ON MOT READY 24V 24V RTN MCU MAIN MOT M...
Страница 234: ...6 40 687200Q 14 MCU FAN MOTOR 1 2 3 4 P J23 24V RTN FAN READY 24V FAN FAN FAST MCU FAN M SAS619XA...
Страница 236: ...6 42 687200Q 15 MCU EXIT MOTOR 1 2 3 4 5 6 P J24 24V A COM A A 24V B COM B B MCU EXIT MOT M SAS620F...
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Страница 394: ...8 32 687200Q 8 7 4 P216 Pin Layout Refer to the P216 Pin Layout when troubleshooting the 500 Sheet Paper Feeder option...
Страница 421: ...687200Q Service Manual 9 21 Replacement Perform the removal steps in reverse order...
Страница 442: ...9 42 687200Q 9 8 Installation and Removal For the installation and removal of the OCT Unit see the Printer User Guide...
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Страница 510: ...11 34 687200Q 11 7 Wiring Diagrams 11 7 1 Connector Locator J 1 3 5 1 11 1 13 1 15 J231 J201 J230 SAS641FA...
Страница 518: ...Spare parts catalogue 687200Q DP N17 WITH OPTION SPARE PARTS CATALOGUE FROM SERVICE MANUAL 1...
Страница 521: ...3 4 687200Q PL 1 Covers I S S 2 1 S S 6 S KL S 3 5 S S S 4 S S SAS301FA...
Страница 523: ...3 6 687200Q PL2 Covers II wsm3 07 7 8 13 4 3 2 5 9 11 S 1 with 2 11 12 6 10 SAS302FE...
Страница 525: ...3 8 687200Q PL 3 Paper Tray 3 2 7 6 5 4 8 S S S 1 with 2 S S SAS303FB...
Страница 527: ...3 10 687200Q PL 4 Paper Transportation I...
Страница 531: ...3 14 687200Q PL 6 Paper Transportation III 2 S S S S 1 1 with 2 S SAS306FC...
Страница 539: ...3 22 687200Q PL 10 Electrical Module I with Top Cover 2 4 3 S S 1 SAS310FB 5...
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Страница 556: ...Spare parts catalogue 687200Q A 1 GENERAL CODES INDEX DP N17...