Hp Officejet 5740 Disassembly Repair Guide

Difficulty

Moderate

Steps

Time Required

                          2 hours

Sections

HP Officejet 5740 Disassembly
20 steps

Flags

In Progress

This guide is a work in progress. Reload periodically to see the latest changes!

Needs More Images

A few more images would make this guide’s procedures crystal clear.

Member-Contributed Guide

An awesome member of our community made this guide. It is not managed by iFixit staff.

BackHP Officejet 5740
Full Screen
Options
History
Save to Favorites
Download PDF
Edit
Translate
Get Shareable Link
Embed This Guide
Notify Me of Changes
Stop Notifications

Introduction

I wrote this down as much for me as anybody else. Kind of like bread crumbs in the forest. It helps to not forget a step.

I found nothing on the net on disassembling or repairing this machine.

My wife had noticed that the printer sounded like it was laboring. Gear noise. I have had a number of printers apart. Every time I do I am amazed at how increasingly flimsy they are getting. When I did get it down to the chassis the shaft with the large paper feed rolls seemed to be misaligned. I tweeked it over so it didn’t rub. On reassembly, voila gear noise seemed to be gone. Fingers crossed it works better than before.

I have no pictures. You’ll have to use your imagination

What you need

Step 1

              HP Officejet 5740  Disassembly

It is assumed that you have unplugged the data cables and using the soft ware of the printer moved the printer head away from the parked position prior to disconnecting the power plug so it can’t return to the parked position.

It is assumed that you have unplugged the data cables and using the soft ware of the printer moved the printer head away from the parked position prior to disconnecting the power plug so it can’t return to the parked position.

1024

Step 2

Pull the out feed shelf gently out of the front of the printer.

Pull the out feed shelf gently out of the front of the printer.

Step 3

In order to release the paper tray you must remove the bottom right slide rail. It is held in place by three screws from underneath. The paper tray will slide all the out with the rail removed.

In order to release the paper tray you must remove the bottom right slide rail. It is held in place by three screws from underneath. The paper tray will slide all the out with the rail removed.

Step 4

Apply tape to the bulk feeder / scanner doors to attach them to the main cover. In a later step you must get the main cover open to vertical position in order to proceed with tear down. The tape keeps all three pieces held together

Apply tape to the bulk feeder / scanner doors to attach them to the main cover. In a later step you must get the main cover open to vertical position in order to proceed with tear down. The tape keeps all three pieces held together

Step 5

Do not try to pry the end panels off. They do not come off that way.

Do not try to pry the end panels off. They do not come off that way.

Step 6

Open main cover and notice on right rear corner the latch which holds the cover up at a 45 degree angle.

Open main cover and notice on right rear corner the latch which holds the cover up at a 45 degree angle.

Step 7

Looking at the printer from the right side and focusing on the pin which the latch is hooked to on the cover, notice that there is a tiny space in the lower left-hand area of the connection between the pin and the hook. Insert screwdriver into that space and turn the screwdriver clockwise. Hook pops off the pin toward the front of the machine.

Looking at the printer from the right side and focusing on the pin which the latch is hooked to on the cover, notice that there is a tiny space in the lower left-hand area of the connection between the pin and the hook. Insert screwdriver into that space and turn the screwdriver clockwise. Hook pops off the pin toward the front of the machine.

Step 8

Once the hook is released from the pin, the cover assembly will lean back at a 90 degree angle. Push the printer back against some sort of vertical support like the wall so the cover doesn’t open any further.

Once the hook is released from the pin, the cover assembly will lean back at a 90 degree angle. Push the printer back against some sort of vertical support like the wall so the cover doesn’t open any further.

Step 9

You now have access to the screws that hold the ends and inner cover on.

You now have access to the screws that hold the ends and inner cover on.

Step 10

The right side is held in place by 2 screws and a couple of lugs front and back. The rear screw holding the right side cover is hidden behind and under the J hook latch coming up from below. Take your flash light and find the screw down in its hole. Otherwise you will pry like hell and break the loop which attaches the side to the chassis.

The right side is held in place by 2 screws and a couple of lugs front and back. The rear screw holding the right side cover is hidden behind and under the J hook latch coming up from below. Take your flash light and find the screw down in its hole. Otherwise you will pry like hell and break the loop which attaches the side to the chassis.

Step 11

Remove those two screws. Then there is a lug up under the control panel which needs to be pried loose. With a little finagling the cover should wiggle loose. There are two fixed lugs visible from under the machine. DO NOT try to pry on them as they hold the side on and are not made to be a latch. The side will roll back from the top the lugs pop up

Remove those two screws. Then there is a lug up under the control panel which needs to be pried loose. With a little finagling the cover should wiggle loose. There are two fixed lugs visible from under the machine. DO NOT try to pry on them as they hold the side on and are not made to be a latch. The side will roll back from the top the lugs pop up

Step 12

The left side comes off in a similar way with the caveat that there are two plugs covering two data ports at the rear which need to come out. The screws are in slightly different places but there are two of them which need to come out.

The left side comes off in a similar way with the caveat that there are two plugs covering two data ports at the rear which need to come out. The screws are in slightly different places but there are two of them which need to come out.

Step 13

To get the inner cover off the machine you must remove the screw holding the spring tensioner tape to the lid. Do this by loosening the screw on the lid while reaching down by the ink sump and gently taking the tension off the tape by pulling on the spring. Might be easier with two sets of hands.

To get the inner cover off the machine you must remove the screw holding the spring tensioner tape to the lid. Do this by loosening the screw on the lid while reaching down by the ink sump and gently taking the tension off the tape by pulling on the spring. Might be easier with two sets of hands.

Step 14

With the tension of the spring released the lid is now very vulnerable to swinging back so it is mentioned again to brace the cover against a vertical support.

With the tension of the spring released the lid is now very vulnerable to swinging back so it is mentioned again to brace the cover against a vertical support.

Step 15

At the rear of the control panel there are two screws holding it in place. With them removed gently slide the panel to the right and up at the front to remove. Careful of the two sets of connections. One is a ribbon cable and the other a black and red twisted set of wires.

At the rear of the control panel there are two screws holding it in place. With them removed gently slide the panel to the right and up at the front to remove. Careful of the two sets of connections. One is a ribbon cable and the other a black and red twisted set of wires.

Step 16

Once the control panel is pulled forward and laid to the front you will see two more screws which are hidden under the control panel holding the inner cover to the chassis. DO NOT remove the screw you see in the center which holds the latch in place.

Once the control panel is pulled forward and laid to the front you will see two more screws which are hidden under the control panel holding the inner cover to the chassis. DO NOT remove the screw you see in the center which holds the latch in place.

Step 17

There are two more screws at the rear of the inner panel near the cover hinges which need to come out before the inner cover can be removed.

There are two more screws at the rear of the inner panel near the cover hinges which need to come out before the inner cover can be removed.

Step 18

At this point you should be able to lift the inner cover off exposing the inner workings of the printer. Now would be a good time to remove the glob of congealed ink from the ink sump pad.

At this point you should be able to lift the inner cover off exposing the inner workings of the printer. Now would be a good time to remove the glob of congealed ink from the ink sump pad.

Step 19

When reinstalling the right hand end panel be VERY careful with the two flat cables running up into the copy section. It is easy to get the outer one caught on the upper rear corner of the side panel as it is installed. Do not fubar the flat cable.

When reinstalling the right hand end panel be VERY careful with the two flat cables running up into the copy section. It is easy to get the outer one caught on the upper rear corner of the side panel as it is installed. Do not fubar the flat cable.

Step 20

When reinstalling the spring loaded tape at the right rear of the machine, I used a pair of needle nose pliers supporting the bracket to take the tension while reinserting the screw into the cover above.

When reinstalling the spring loaded tape at the right rear of the machine, I used a pair of needle nose pliers supporting the bracket to take the tension while reinserting the screw into the cover above.

To reassemble your device, follow these instructions in reverse order.

Cancel: I did not complete this guide.

                                                                                      2 other people completed this guide.

Author

                                      with 2 other contributors

                    John

Member since: 06/04/2013

434 Reputation

                                      1 Guide authored                  



                       Badges:
                       10







                                                        +7 more badges

In Progress#

Needs More Images#

Member-Contributed Guide#

Introduction#

What you need#

In Progress

Needs More Images

Member-Contributed Guide

Introduction

What you need