Xerox 4400DT Service Manual - Page 124
Registration Clutch, Registration Clutch Troubleshooting Procedure, Actions and Questions
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Registration Clutch Registration Clutch Troubleshooting Procedure Step Actions and Questions Yes No 1 1. Enter Service Diagnostics and select Clutch Tests. Go to step 6. Go to step 2. 2. Scroll to Registration Clutch and press OK. Can you hear the Registration Clutch energize? 2 1. Switch the printer power OFF. Go to step 4. Go to step 3. 2. Remove the Left Interface Cover (RRP 1.1 on page 6-6), Left Cover (RRP 1.2 on page 6-7), and the Left Plate (RRP 1.11 on page 6-16). 3. Disconnect P/J23 on the Engine Logic Board. 4. Measure the resistance between pins 6 and 9 on the disconnected plug. Is the resistance approximately 145 to 165 ohms? 3 1. Remove the Front Cover (RRP 1.6 on page 6-11) and Replace the Replace the the Left Front Cover (RRP 1.7 on page 6-12). Connector Registration 2. Disconnect P/J43 from the Connector PWB. 3. Measure the resistance between pins 1 and 2 on the disconnected plug. PWB 9.7 page 6-98. Clutch (RRP 5.5 on page 6-62) Is the resistance approximately 145 to 165 ohms? Replace the Engine Logic Board (RRP 9.3 on page 6-89). 4 1. Reconnect P/J23. Go to step 5. Replace the 2. Switch the printer power ON. 3. Check the voltage between P/J23 pin 6 and frame ground. Engine Logic Board (RRP 9.3 on Is the voltage +24 VDC? page 6-89). 5 1. Enter Service Diagnostics and select Clutch Tests. Replace the Replace the 2. Scroll to Registration Clutch. 3. While measuring the voltage between P/J23 pin 9 and frame ground, press OK. Registration Clutch (RRP 5.5 on Engine Logic Board (RRP 9.3 on Does the voltage drop from +24 VDC to page 6-62) page 6-89). 0.0 VDC? 6 1. Switch the printer power OFF. Problem 2. Open the Front Cover and remove the Print solved. Cartridge. 3. With the Front Cover open, cheat the Front Cover Interlock. 4. Enter Service Diagnostics and select Main Motor+Clutch/Sol Test. 5. Scroll to Motor + Registration and press OK. Do the Registration Rolls rotate smoothly without stalling or jerking? Replace the Registration Clutch (RRP 5.5 on page 6-62) or Registration Rolls (RRP 5.6 on page 6-62). Phaser 4400 Laser Printer Service Manual 3-27
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