Lexmark E340 -- Random Notes

Service Parts

Fan: 40X1328

Fuser: 40X4194 (was 40X1300)

Photoconductor: 12A8302

Pickup Tire Pair: 56P1820 (was 40X1319)

Toner Cartridge: 34015HA -- High Yield Return Program

Fan Access

1) Front Door Open

2) Right Side Cover
>One claw high up in front -- triangular pushbutton.
>One claw just above control panel cable.
>The cover swings open. Pry at the bottom rear to free the hinge.

3) Fan
>One cable connection at J18.
>Two M3x30mm bright pan head screws w/captive washers.
>Airflow is outward.
>Cable lay is downward and toward the front.

Fan Lubrication

In a pinch, you can try lubricating a noisy fan.

Get the fan out. On the outboard (wiring) side, there's a blank adhesive 'label'. Peel that off carefully and there's a round vinyl cap that's easily pried out. Flood the cavity revealed with WD-40 and spin the fan and jiggle it axially. Mop up excess lubricant with a Q-Tip and replace the cap. Clean the cap and the surrounding surface with methyl hydrate, dry it and you can re-adhere the 'label'.

Fuser Access

1) Front Door Open

2) Right Side Cover
>One claw high up in front -- triangular pushbutton.
>One claw just above control panel cable.
>The cover swings open. Pry at the bottom rear to free the hinge.

3) Left Side Cover
>One M3x6mm bright washerhead screw in front.
>Two claws in front.
>The cover swings open. Pry at the bottom rear to free the hinge.

4) Rear Cover
>Rear paper tray cover -- squeeze its sides inward to remove it.
>Open rear door.
>Two M3x6mm bright washerhead screws.
>Tip rearward and lift the cover away. Note the two hooks at the lower left and right sides that must engage rectangular openings upon reinstallation.

5) Delivery Assembly
>Two M3x6mm bright washerhead screws; one at UPPER left, one at UPPER right.
>One M3x8mm bright washerhead screw at lower left.
>The item pulls out the back.

6) Fuser
>Exit sensor cable connection at J17.
>Thermistor cable connection at J16.
>Two M3x6mm bright washerhead screws at sheet metal tabs, left and right.
>Pull the fuser out far enough to get at the AC spade terminals.
>NOTE: The spade terminals are a lock-on type that can be quite aggravating to disconnect. The female terminal must be pressed downward to disengage it from the male terminal. You may have to slide back the insulating sleeve to do this. The insulating sleeve on the black wire gets baked and embrittled; you may have to ruin it to get the terminal off.
>REINSTALLATION NOTE: The blue and black wires must lie in their channel at the left side end of the fuser; there's no clearance for them otherwise. Mind the sheet metal tab at the left side end; it's easy to get it in behind its mounting tab, instead of on the outside of it.

Fuser Lamp Replacement

The lamp can be replaced without dismantling the fuser at all.

1) Two M3x6mm bright pan head screws w/captive washers.

2) Withdraw the lamp from the end with the L-shaped lamp terminal. When installing a new lamp, a spring hook is helpful for getting the straight terminal in place.

Configuration Menu

Press and hold 'Select' and 'Return' as you power on.

Diagnostics Mode

Press and hold 'Go' and 'Return' as you power on.

Maintenance Count

There isn't one, but there is a photoconductor (PC) count. It can be reset, but not read, from the Configuration Menu. On the Menu Settings page, under 'Cartridge Information', there's an entry, 'Photoconductor'. It will read 'OK' when the PC count has just been reset.