Part #:GEN-9501-N_9800_Removal

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Category: Education
     
 

Presentation Description

How to change out the ‘infamous sensor chip’ in the Epson Stylus Pro 7800/9800. This work is offered free and the author does not accept any liability for errors contained therein. This presentation is only for pictorial reference only and not to be taken as expert advice.

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Presentation Transcript

Slide 1:

Replacement of Epson Sensor Chip (Part #: GEN-9501-N) WARNING Neterapublishing (the publisher) of this material shall not be responsible for and disclaims all liability for any loss, liability, damage (whether direct, indirect or consequential), personal injury or expense of any nature whatsoever which may be suffered by you or any third party (including your company / individual), as a result of or which may be attributable, directly or indirectly, to your access and use of this presentation, or any information contained in this presentation. In particular, neither the publisher nor any third party or data or content provider shall be liable in any way to you or to any other person, firm or corporation whatsoever for any loss, liability, damage (whether direct or consequential), personal injury or expense of any nature whatsoever arising from any delays, inaccuracies, errors in, or omission of any information or the transmission thereof, or for any actions taken in reliance thereon or occasioned thereby or by reason of non-performance or interruption, or termination thereof.

Slide 2:

REMOVAL OF SENSOR CHIP SLIDE 1 STEP 1 : Remove all cartridges from the side being worked on. Note: it is easier to remove and replace sensor chips on the left hand side of this model (Epson Stylus Pro 9800 / 7800). REMEMBER TO SWITCH OFF MACHINE AT MAINS BEFORE STARTING

Slide 3:

REMOVAL OF SENSOR CHIP SLIDE 2 STEP 2 : Remove all screws that secure the plastic cover starting with the one on the paper set lever.

Slide 4:

REMOVAL OF SENSOR CHIP SLIDE 3 STEP 2 : Remove screws at rear of cover.

Slide 5:

REMOVAL OF SENSOR CHIP SLIDE 4 STEP 2 : Remove screw below print head.

Slide 6:

REMOVAL OF SENSOR CHIP SLIDE 5 STEP 2 : Remove screw on cartridge locking lever handle.

Slide 7:

REMOVAL OF SENSOR CHIP SLIDE 6 STEP 2 : Remove screws securing the draw which holds the four ink cartridges.

Slide 8:

REMOVAL OF SENSOR CHIP SLIDE 7 STEP 2 : Remove screw securing the draw cover which holds the four ink cartridges.

Slide 9:

REMOVAL OF SENSOR CHIP SLIDE 8 STEP 2 : Remove hidden screw under cap (right side and rear of printer).

Slide 10:

REMOVAL OF SENSOR CHIP SLIDE 9 STEP 2 : Remove screws below paper roll spindle.

Slide 11:

REMOVAL OF SENSOR CHIP SLIDE 10 STEP 2 : Remove screws above paper roll spindle.

Slide 12:

REMOVAL OF SENSOR CHIP SLIDE 11 STEP 3 : Remove cartridge housing assembly.

Slide 13:

REMOVAL OF SENSOR CHIP SLIDE 12 STEP 4 : Remove control panel. Warning: this is a delicate job, the tabs holding the panel should be eased out of position by reaching inside the cover prior to its removal, do not force off with metal blade.

Slide 14:

REMOVAL OF SENSOR CHIP SLIDE 13 STEP 4 : Detach ribbon connector at the rear of the control panel.

Slide 15:

REMOVAL OF SENSOR CHIP SLIDE 14 STEP 5 : Remove cover from printer.

Slide 16:

REMOVAL OF SENSOR CHIP SLIDE 15 STEP 6 : The cartridge sensors are located behind the area shown. They can only be removed by dissembling this part of the printer.

Slide 17:

REMOVAL OF SENSOR CHIP SLIDE 16 STEP 7 : Carefully remove the four ribbon connectors (see red arrow) next to each of the protruding circuit boards.

Slide 18:

REMOVAL OF SENSOR CHIP SLIDE 17 STEP 7 : The cassis holding all the cartridges is mounted to the side of the printer, remove the screws securing this. The chassis is also hooked into position and so will not fall when unscrewed.

Slide 19:

REMOVAL OF SENSOR CHIP SLIDE 18 STEP 7 : Another securing screw on the chassis (front of unit).

Slide 20:

REMOVAL OF SENSOR CHIP SLIDE 19 STEP 7 : Another securing screw on the chassis (underneath front of unit).

Slide 21:

REMOVAL OF SENSOR CHIP SLIDE 20 STEP 7 : Another securing screw on the chassis (underneath rear of unit).

Slide 22:

REMOVAL OF SENSOR CHIP SLIDE 21 STEP 7 : Release ink pipes from restraining clip on the top of the ink chassis.

Slide 23:

REMOVAL OF SENSOR CHIP SLIDE 22 STEP 7 : Release ink pipes from guides on the top of the printer cartridge chassis.

Slide 24:

REMOVAL OF SENSOR CHIP SLIDE 23 STEP 8 : Unclip B/W wire from back of chassis. When the chassis is detached from the side of the printer this wire will limit its movement, it is suggested it is unclipped.

Slide 25:

REMOVAL OF SENSOR CHIP SLIDE 24 STEP 8 : End of B/W wire, terminating under the cartridge locking mechanism. This can be carefully prized downward by releasing barbed catches at the end of the black plastic block.

Slide 26:

REMOVAL OF SENSOR CHIP SLIDE 25 STEP 9 : Unclip clear plastic pipe from back of chassis, this pipe is connected to the pressure monitors on each cartridge. Extra care should be taken to not crimp these pipes. CHASSIS CAN NOW BE LIFTED OFF THE SIDE OF THE PRINTER

Slide 27:

REMOVAL OF SENSOR CHIP SLIDE 26 STEP 9 : Marked at the factory, these alignment marks should be noted, their positioning is critical for the cartridge locking mechanism to work properly. Note: When the lid of the chassis is removed these cogs will float and misalign, upon reassembly these marks are used to help align the original positions of these cogs. Incorrect alignment will not allow the cartridge locking mechanism to work correctly.

Slide 28:

REMOVAL OF SENSOR CHIP SLIDE 27 STEP 10 : A nylon plate runs along the length of all cartridges, this must be slowly prized off. This operation is quite difficult as the unit is delicate and held in place by nylon tabs (see red arrow).

Slide 29:

REMOVAL OF SENSOR CHIP SLIDE 28 STEP 10 : The nylon plate is lifted away from the back of the print cartridge chassis. The black spindle inside is loose fitting and will tend to drop out of the nylon plate.

Slide 30:

REMOVAL OF SENSOR CHIP SLIDE 29 STEP 11 : Remove screws securing the ink pipes and cartridge pressure sensors. Note: make sure you note their colour positions in sequence. Also remove main pressure sensor clear plastic tube.

Slide 31:

REMOVAL OF SENSOR CHIP SLIDE 30 STEP 11 : Tip of ink outlet and pressure sensor unit.

Slide 32:

REMOVAL OF SENSOR CHIP SLIDE 31 STEP 12 : Remove appropriate vacuum pipe from the back of the cartridge that needs sensor repair/ replacement (rear of chassis).

Slide 33:

REMOVAL OF SENSOR CHIP SLIDE 32 STEP 13 : To reach the sensor chips, the top of the chassis will have to be removed. There are four screws securing the top plate. When removed each dividing compartment will float and be removable.

Slide 34:

REMOVAL OF SENSOR CHIP SLIDE 33 STEP 13 : Screw on the lid of the chassis. Many of the screws on the 9800 are self tapping and need to be located on their original taps.

Slide 35:

REMOVAL OF SENSOR CHIP SLIDE 34 STEP 14 : After removal of lid the individual sections that hold each cartridge can be removed independently and replacement of sensor chip can be achieved.

Slide 36:

REMOVAL OF SENSOR CHIP SLIDE 35 STEP 14 : Turning over the removed section reveals the sensor chip. Note: only one copper contact can be seen after damage to chip (lower left arrow). Replacement sensor chip (seen top right). Note: Sensor chips can be repaired if not badly damaged, individual sprung copper pieces can be reinserted into their plastic body. Once in position metal should be tensioned again by bending them outward to make good contact with reciprocal sensor on circuit board (also mounted on that particular section of the chassis – see next slide for circuit board image).

Slide 37:

REMOVAL OF SENSOR CHIP SLIDE 37 STEP 15 : To give better access to sensor chip remove plastic bracket from metal plate.

Slide 38:

REMOVAL OF SENSOR CHIP SLIDE 38 STEP 15 : Bracket removed from metal plate by sliding it sideways.

Slide 39:

REMOVAL OF SENSOR CHIP SLIDE 39 STEP 16 : Circuit board from the back of plastic plate can be removed and safely stored if required. The gold contacts seen (red arrow) are where the sensor chip locates.

Slide 40:

REMOVAL OF SENSOR CHIP SLIDE 40 STEP 17 : Removal of old sensor chip. Long nosed pliers can be use to squeeze tabs inward, releasing sensor from its housing. Note: this component is fragile, apply very gentle pressure only

Slide 41:

REMOVAL OF SENSOR CHIP SLIDE 41 STEP 17 : Final removal of broken sensor chip.

Slide 42:

REMOVAL OF SENSOR CHIP SLIDE 42 STEP 18 : New sensor chip installed and contacted against its corresponding circuit board. Unit can now be reassembled. Note: After repair/replacement is complete there maybe issues with some cartridges showing a pressure loss if they are part of a CISS setup. Carefully checking all rubber stops are firmly positioned on each cartridge should remedy this problem, an initial power clean on the system is also advised.

Slide 43:

End of Presentation Replacement of Epson Sensor Chip (Part #: GEN-9501-N)

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