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Service Source
Envelope Feeder
LaserWriter Pro 600/630 Envelope Feeder
LaserWriter 16/600 PS Envelope Feeder

Basics About This Manual - 1
About This
Manual
This manual covers the Take
Apart, Additional Procedures, and Adjustments for
the sheet feeder. Refer to
the main printer manuals
for all other information.
Envelope Feeder

Basics Compatibility - 2
Compatibility
The LaserWriter Pro 600/630 envelope feeder is
compatible only with the Pro 600/630 printer. However,
you may use the LaserWriter 16/600 PS envelope feeder
with either the Pro 600/630 or 16/600 printers.
You can tell the two feeders apart in three distinct ways:
1 By carefully inspecting the pickup rollers and shafts:
The LaserWriter Pro 600/630 model has a two-piece
roller/shaft construction. The LaserWriter 16/600 PS
model has a one-piece roller/shaft construction.

Basics Compatibility - 3
2 By comparing controller board serial numbers: The
LaserWriter Pro 600/630 envelope feeder controller
board has the vendor number "RG5-0576" imprinted at
the end of the board. The LaserWriter 16/600 PS
envelope feeder controller board bears the number
"RG1-3437."
3 By comparing serial numbers: Numbers starting with
JXC00001 denote feeders for use only with the Pro
600/630. Numbers starting with LBK00001 denote
feeders for use on both generations of printer.

Basics Slip Torque Rollers - 4
Slip Torque
1/4" ±
Shaft
Roller or Gear
Rollers
Slip torque rollers and gears
are ratcheted torquelimiting gears that use
bearings instead of teeth to
govern rotation:

Basics Slip Torque Rollers - 5
Primary Feed Roller:
This roller acts independently of the shaft when the roller is
rotated in reverse, thus permitting free removal of jams.
Separation Drive Assembly:
The gearing at the end of the separation assembly is
comprised of one passive gear and two slip torque gears.
This assembly results in counter-rotation of the separation
rollers, regardless of the drive direction of the gear train.
Pickup Roller Shafts:
The two gears that mesh with the transfer drive assembly
are slip torque gears.

Take Apart Envelope Weight - 1
Envelope Weight
No preliminary steps are
Envelope Weight
required before you begin
this procedure.
1 Pull one of the arms out
of the pin and lift out the
weight.

Take Apart Left Cover - 2
Left Cover
Before you begin, remove
the envelope weight.
Left Cover

Take Apart Left Cover - 3
Note:
Two hidden flex tabs
on the bottom and two posts
at the top attach the left
cover to the feeder.
1 Turn over the envelope
Bottom
feeder.
2 Using a small flat-blade
screwdriver, pry the
two hidden tabs in the
order shown and remove
the left cover.
Left Cover
Bottom

Take Apart Right Cover - 4
Right Cover
Right Cover
Before you begin, remove
the envelope weight.

Take Apart Right Cover - 5
Note:
Two hidden flex tabs
on the bottom and two posts
at the top attach the right
Bottom
cover to the feeder.
1 Turn over the envelope
feeder.
2 Using a small flat-blade
screwdriver, pry the
two hidden tabs in the
Right Cover
Bottom
order shown and remove
the right cover.

Take Apart Front Cover - 6
Front Cover
Front Cover
Before you begin, remove
the following:
• Envelope weight
• Left cover
• Right cover
Note:
If you remove the
separation guide plate from
the front cover, you will
have to adjust the gap
between the separation guide
plate and the primary feed
roller. See "Separation
Guide Opening" in
Adjustments.

Take Apart Front Cover - 7
Flex Tab
1 Remove the screw that
secures the grounding
cable that runs from the
front cover (not shown).
2
Note:
This graphic
shows the flex tab
connector at the left side
of the feed opening.
Release the two flex tab
connectors at each side of
the feed opening and pull
out the front cover.