<!-- from fixya rte -->Registration assembly damaged or unseated. - HP LaserJet 1320 Printer

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E240error code can be caused by excessive side to side movement of the Transfer / Separation Corona Assembly. To resolve this issue, check and make sure the Transfer / Separation fixing latch bracket is properly installed. This is the latch which secures the Transfer / Separation corona assembly.

Has been noted that the registration clutch can load down the DC Controller and cause anE240error code. The clutch can spin if the pin holding the clutch is not inserted correctly and damage the registration clutch wire harness. The clutch can also intermittently short out through the clutch housing.

Ensure transfer roller is properly installed.Turn printer off and check transfer roller contacts. Are contacts present and not damaged? If yes, Replace engine controller board.
Otherwise, If contact A (please see attachment) has slipped off frame, put it back on. If you cannot see it, remove HVPS cage and put it back in place. If B is damaged, replace registration assembly.

Three areas you need to check.1.Pick up area: While pick up roller picking up the paper,delay pick or no pick causes paper jam..
2.Registration assembly area: Once paper picked from the tray, paper leading edge registered by the paper sensor located under the registration assembly.. In case this sensor dusty malfunction or flag damage, paper wont sense. result paper damage..
3.Fusing area. If the paper travels up to fuser area, check paper jammed before entering in fuser(Teflon not rotating properly, replace teflon sleeve) or just crossed?(check paper sensors in fuser unit, clean the sensors & check flags,flag springs.

Hello,
E051
0000 At start-up, home position is not detected when the horizontal registration
assembly is moved 100 mm in the direction of home position.
Main cause The horizontal home position sensor is faulty. The horizontal registration
motor is faulty. The DC controller PCB is faulty.
Action
1. Connector
Are the connectors of the horizontal registration home position sensor and
the horizontal registration motor connected?
a. DC controller PCB (J304) relay connector horizontal registration
home position sensor
b. DC controller PCB (J304) relay connector horizontal registration
motor
NO: Connect the connectors.
2. Sensor lever (damage and interference), Sensor
Is abnormal noise heard from the horizontal registration assembly in keeping
with the motor rotation?
YES: a. The horizontal registration assembly is out of place because of
damage to the sensor lever. Replace the sensor lever.
b. The horizontal registration assembly malfunctions because of the
presence of foreign matter. Remove the foreign matter.
c. The sensor is faulty and cannot detect home position. Replace the
sensor.
3. Horizontal registration motor, DC controller PCB
Is the horizontal registration motor control signal generated by the DC controller
PCB?
J304-1/2: 24 V, J304-3/4/5/6: motor excitation signal
YES: The horizontal registration motor is faulty. Replace the motor.
NO: Replace the DC controller PCB.


As You can see, is better to call service.

Hope that helps!

1. Open the hood to the 1999 Dodge Stratus.
   

2. Locate the two headlight lens assembly retaining screws at the top of each side of the assembly.
3. Remove each screw with the ratchet and a suitable socket.
4. Place the screwdriver behind the lens assembly to assist in prying out the guide pins that secure and align the headlight assembly. Hold the lens assembly from the outside edge (marker light/directional light section) first and pry from behind with the screwdriver to unseat the guide pins. Pry from the inside end of the lens assembly to unseat the other guide pin.
5. Pull the lens assembly out far enough to reach behind it and disconnect the headlight bulb wire harness from the back of the bulb. Or simply remove the bulb by twisting the harness and retaining ring counterclockwise and remove it as an assembly.
6. Turn the marker light/directional light socket and wire counterclockwise to remove it from the headlight lens assembly.
7. Remove the assembly from the front of the Stratus.

According to the HP Service manual, there is no 54.18 error.

The listed errors are:


54.1 Temperature error
Check the fuser. See 50.X fuser error.
54.3 Image density sensor error
Check the connections. Replace the color registration detection assembly.
54.5 Colour registration sensor error
Check the connections. Replace the color registration detection assembly.
54.6 Image density error
Check the connections. Replace the color registration detection assembly.
54.7(Y), 54.8(M), 54.9(C), or 54.10(K) Drum phase sensor error
Check the connections. Replace the drum phase sensor for the indicated color.
54.11(K), 54.12(C), 54.13(M), or 54.14(Y) Toner sensor error
Check the connections. Check the cartridge and replace it if necessary.
Replace the color registration detection assembly.
54.19 Transfer Belt error
Check the ETB connection. Replace the ETB. Replace the DC controller.

It is most likely that you have a faulty Toner Cartridge.

7.2 Detecting Jams 7.2.1 Delay Jams 7.2.1.1 Delay Jam in Pickup Assembly 0010-4883 iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i Delay Jam in Pickup Assembly The registration sensor cannot detect the leading edge of paper within the jam detection time interval after paper pickup started. T-7-2 7.2.1.2 Delay Jam in Delivery Assembly (Paper Leading Edge Jam at First Delivery Sensor/Wound Paper Jam at Fixing Assembly) 0011-0712 iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i Paper Leading Edge Jam at First Delivery Sensor The first delivery sensor cannot detect presence of paper within the prescribed time after the registration clutch has been turned on. T-7-3 Wound Paper Jam at Fuser The first delivery sensor has detected absence of paper within the prescribed time after it detected presence of paper (within the prescribed time after the registration clutch had been turned on). T-7-4 7.2.2 Stationary Jams 7.2.2.1 Stationary Jam in Pickup Assembly 0010-4884 iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i Stationary Jam in Pickup Assembly The registration sensor does not detect absence of paper within the prescribed time before the next leading edge of fed paper reaches the registration sensor. T-7-5 7.2.2.2 Stationary Jam in Delivery Assembly (Paper Trailing Edge Stationary Jam at First Delivery Sensor/Stationary Jam at First Delivery Sensor) 0011-0733 iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i Paper Trailing Edge Stationary Jam at First Delivery Sensor The first delivery sensor cannot detect absence of paper within the prescribed time after the registration sensor has been turned off. T-7-6 Stationary Jam at First Delivery Sensor The first delivery sensor cannot detect absence of paper within the prescribed time after it has detected the leading edge of paper. T-7-7 7.2.3 Other Jams 7.2.3.1 Door Open Jam 0010-4886 iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i Door Open Jam The door is opened when paper to be printed is in the paper feed path. 7.3 Cassette Pick-Up Unit 7.3.1 Overview 0010-4887 iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i The paper picked up from the cassette is fed to the registration roller using the vertical path roller driven by the main motor (M204). The registration roller is not rotating when paper reaches there, so an arch is formed at the leading of the paper to prevent skewing. The DC controller PCB turns on the registration clutch (CL203) at the prescribed timing to transfer the main motor rotation to the registration roller, thus feeding the paper to the delivery tray through the transfer, sepa- Sensor/Solenoid Registration sensor (SR209) Pickup solenoid (SL202) Sensor/Registration clutch First delivery sensor (SR203) Registration clutch (CL203) Sensor/Registration clutch First delivery sensor (SR203) Registration clutch (CL203

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1. Ensure that paper trays are loaded and adjusted properly so media can feed from the tray. It might be necessary to reduce the stack height of media in the tray. 2. Check the input area for obstructions such as media in the path. Also check to see if the registration assembly damaged or unseated. 3. Replace any defective sensors or flags. 4. Verify the media meets the specifications. 5. Check the pickup feed and separation rollers for unusual wear. Replace as needed. 6. Rotate the media in the input tray by 180° and/or turn it over