HP LJ 4350tn -- DC Controller PCA Access

The DC Controller PCA includes a hard-wired paddle PCA for the formatter connection. The paddle PCA is permanently connected to the DC Controller by a flat cable and two wires. The combination makes for a lot of fiddling about with cabling to replace a DC Controller. Take great care not to damage the broad flat cable.

1) Back Door Open

2) Top Rear Cover
> Pull it straight up.

3) Right Side Rear Cover
> Pull it straight back.

4) Cartridge Engagement Arm
> Disconnect it from the toner cartridge access door.

5) Top Cover Assembly
> Four M3x8mm washerhead screws.
> Lift the cover about an inch.
> Control panel cable connection.
> Lift the cover away entirely.

6) Formatter Cage Door
> Open it and lift to remove.

7) Right Side Cover
> One large claw at upper rear.
> One claw at arrowhead in front behind tray 1 door.
> One claw at arrowhead in front just below tray 1 door.
> MIND THE SWITCH LINK'S ENGAGEMENT when reinstalling this cover.

8) Formatter Cage
> Two M3x6mm bright washerhead screws at the rear.
> Pull it back to disconnect/remove it.

9) Formatter Connector Paddle PCA
> Remove two M3x6mm shoulder screws.

10) DC Controller PCA
> NOTE that connector locations J76 and J94 are not used.
> Two flat cables.
> Power supply cable -- squeeze the latch to disconnect it.
> Twenty remaining cable connections.
> Free the cabling from the trough A/R to free the blue and yellow wires going to the paddle PCA.
> Free the paddle PCA's flat cable from its trough.
> You may have to disconnect the Tray 2 size sensor's cable at the sensor's switch-block to fully free the paddle PCA's wiring. CAUTION: It's very easy to dislodge the switch-block when you're reconnecting the cable.
> Two M3x8mm washerhead screws.

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