Disassembly Procedure. Citizen CT-P293

CT-292/293 Series Service Manual

1-2-1. Disassembling the Printer

1. Disassembling “COVER, OPE-PANE”

Press in the lugs on the right and left at “COVER, OPE-PANE” and remove “COVER, OPE-PANE” toward you.

Lugs

COVER, OPE-PANE

<Precaution at reassembly>

Engage the lugs at “COVER OPE-PANE” to “CASE L”.

Try to pull “COVER OPE-PANE” toward you to check that it is securely fitted.

Remove two “SCREW, PHT (ST#3), M3.0 × 6” that fasten “SA, FRAME BASE”, and pull it toward you while holding the both edges of “SA, DOOR FRONT”.

Metallic parts

SCREW, PHT (ST#3), M3.0 × 6 SA, DOOR FRONT

<Precaution at reassembly>

When reassembling “CASE L”, put it smoothly without hitch.

If it cannot be inserted smoothly, pull it toward you and insert it back again.

Check that the metallic part comes into view through the holes at “CASE L”.

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CT-292/293 Series Service Manual

Flip down “SA, DOOR FRONT” toward you.

Remove “E-RING, 2.0” that fasten “LINK, FRONT DOOR” and “SA, LEVER PLATEN” at the right and left, and disengage “LINK, FRONT DOOR” from “DOOR FRONT”.

SA, LEVER PLATEN

E-RING, 2.0

LINK, FRONT DOOR

<Precaution at disassembly / reassembly>

Keep the bosses at “LINK, FRONT DOOR” facing inwardly and hang them to “DOOR FRONT”. Put “LINK,

FRONT DOOR” to the pins at “SA, LEVER PLATEN” and secure it using “E-RING”.

Open “DOOR FRONT” and detach it from the shaft at “HOLDER PAPER”.

On the left side, align the grooves at the shaft with the notches at “DOOR FRONT”, and slide “DOOR

FRONT” to the right to remove it.

Right

Left Align the grooves.

<Precaution at disassembly / reassembly>

Note that the left side of “DOOR FRONT” can be inserted or removed only in a correct orientation.

When reassembling, insert the right side first, then the left side.

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CT-292/293 Series Service Manual

4. Disassembling “UNIT, MAIN PCB”

Remove four “SCREW, PHT (ST#3), M3.0 × 6”, and detach “UNIT, MAIN PCB” that is secured between

“PLATE SHIELD” and “SA, FRAME BASE”.

SCREW, PHT (ST#3), M3.0 × 6

PLATE SHIELD UNIT, MAIN PCB

Raise the front edge of “UNIT, MAIN PCB” and disconnect “FFC CABLE” from the connectors at the

“HEAD ASSY” side and the “UNIT, MAIN PCB” side. Then, remove the other connectors and cut the cable tie.

Auto-cutter model (CT-P293) only

Route the cable away from the frame edge.

CN4: CUTTER CN5: COVER SW

HEAD ASSY

CN3: MOTOR CN3: PE

Cable tie COVER SW

<Precaution at disassembly / reassembly>

When connecting or disconnecting “FFC CABLE”, keep it straight. Insert “FFC CABLE” while facing the character-printed side upward.

When routing the cable for “COVER SW”, keep the cable away from the frame edge and do not tie it together with any other cables.

Secure the other cables using a cable tie. (Loop back the motor cable only.)

Be careful not to allow the cables to get caught unnecessarily.

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CT-292/293 Series Service Manual

1-2-2. Disassembling “UNIT, MECHANISM”

1. Disassembling “SA, HOLDER PAPER”

Remove “SCREW, PHT (BT#3), M3.0 × 8”, that fasten “SA, FRAME BASE” and “SA, HOLDER PAPER”, from the right and left sides, respectively.

SCREW, PHT (BT#3), M3.0 × 8

<Precaution at reassembly>

Securely fit the bosses at “SA, HOLDER PAPER” into the slots at “SA, FRAME BASE”.

Remove “CUTTER CABLE” from the groove at “SA, HOLDER PAPER”, and draw it out from the hole.

Move “SA, HOLDER PAPER” along the groove at “SA, FRAME BASE” and remove it.

Remove the cable from this groove.

Draw out “CUTTER CABLE” from this hole.

Auto-cutter model (CT-P293) only

<Precaution at disassembly / reassembly>

Fit the boss at “FRONT DOOR ASSY” into the hole at “SA, HOLDER PAPER”.

Fit the boss in the following procedure.

Fit the projection at the gear here.

Fit the opposite boss here.

Fit the boss into the hole.

Fit the boss into the hole.

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CT-292/293 Series Service Manual

Insert the cable into this groove.

Take up slack from the cable.

<Precaution at disassembly / reassembly>

For the auto-cutter model, route the cable outside the screw for “GUIDE, PAPER

ADJUST”, and insert it into the groove at “SA,

HOLDER PAPER” without any slack on the cable.

Route the cable outside the screw.

Auto-cutter model (CT-P293) only

Remove “PE, PCB ASSY” from “SA, HOLDER PAPER”.

Pull the hooks at the right and left outwardly, detach the lower lugs and pull “PE, PCB ASSY” upwardly to remove it.

Hooks Hooks

PE, PCB ASSY

SA, HOLDER PAPER Lugs

<Precaution at disassembly / reassembly>

When disassembling, do not pull the hooks excessively. Doing so may damage them.

When reassembling, insert “PE, PCB ASSY” while fitting the lugs first and then the hooks.

2. Disassembling “SA, FRONT DOOR ASSY”

Remove “E-RING, 2.0”, that fasten “SA, FRONT DOOR ASSY” and “SA, FRAME BASE”, from the right and left sides.

Left Right

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CT-292/293 Series Service Manual

Detach the boss at “SA, FRAME BASE” from “FRAME, FRONT DOOR” while pulling “FRAME, FRONT

DOOR” outwardly.

Detach two lugs that fasten “GUIDE FRONT DOOR”.

Detach two lugs from the right and left sides of the platen roller.

<Precaution at disassembly / reassembly>

For the auto-cutter model, the cable is secured with the hook at “GUIDE FRONT DOOR”. When removing the cable, remove it while pushing the hook in the arrow direction. When attaching the cable, make it flat and insert it into the hook while pulling the cable toward the connector side to avoid slack on the cable.

Auto-cutter model (CT-P293) only

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CT-292/293 Series Service Manual

Remove “SPRING, PLATEN LOCK” from the right and left sides of “FRAME, FRONT DOOR”.

Face them inwardly.

SA, LEVER PLATEN L SA, LEVER PLATEN R

<Precaution at reassembly>

When reassembling, keep the end of “SPRING, PLATEN LOCK” facing inwardly under the “FRAME, FRONT

DOOR”. Press “SA, LEVER PLATEN L & R” and check that they can be moved smoothly.

Remove “E-RING, 4.0” that fasten “PLATEN GEAR”, and pull out “PLATEN GEAR”.

Remove two “E-RING, 4.0” that fasten “PLATEN” and “PLATEN BUSH” at the right and left sides.

PLATEN GEAR

E-RING

PLATEN

E-RING

Move “PLATEN” to the right and pull it out from the shaft support at “FRAME, FRONT DOOR”.

When removing “PLATEN”, pull it out together with “PLATEN BUSHING” to the upper left.

Left Move “PLATEN” to the right.

Right

PLATEN BUSHING

Pull out “PLATEN” to the upper left.

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PLATEN

CT-292/293 Series Service Manual

<Precaution at reassembly>

When reassembling, insert “PLATEN”, together with “PLATEN BUSHING”, into “FRAME, FRONT DOOR” from the right. Since the shaft length of “PLATEN” differs between the right and left, be careful not to insert

“PLATEN” in a wrong orientation.

4. Disassembling “AUTO CUTTER” (CT-P293) or “DUMMY, CUTTER FRAME” (CT-P292)

Remove two “SCREW, PHT (ST#3), M3.0 × 6”, that fasten “FRAME, FRONT DOOR”, from the right and left sides.

SCREW, PHT (ST#3), M3.0 × 6

Slide “CUTTER” or “DUMMY, CUTTER FRAME”, and remove it while holding the side frames of

“FRAME, FRONT DOOR” outwardly.

Check the orientation.

<Precaution at reassembly>

When reassembling, pull “FRAME, FRONT DOOR” outwardly and slide “CUTTER” or “DUMMY, CUTTER

FRAME” onto “FRAME, FRONT DOOR” from a slanting direction.

Align the holes with the internal bosses at the right and left sides of “FRAME, FRONT DOOR”.

Check the mounting orientation. (The paper guide faces the “PLATEN” side.)

BOSS BOSS

Left side

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Left side

AUTO CUTTER (CT-P293)

Paper guide

CT-292/293 Series Service Manual

DUMMY, CUTTER FLAME (CT-P292)

Paper guide

5. Disassembling “SA, LEVER PLATEN L & R”

Remove two “E-RING, 2.0” from the right and left sides of “FRAME, FRONT DOOR”.

Left side

<Precaution at reassembly>

Be sure to assemble “SA, LEVER PLATEN” in a correct orientation.

Right side

6. Disassembling “SA, F BLADE STAY”

Remove two “SCREW, PHT (ST#3), M3.0 × 6” that fasten “SA, FRAME BASE” and “SA, F BLADE

STAY”.

SCREW, PHT (ST#3), M3.0 × 6

Align the bosses.

<Precaution at reassembly>

Align the bosses at “SA, F BLADE STAY” with the holes at “SA, FRAME BASE”.

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CT-292/293 Series Service Manual

Remove “SCREW BHT (ST), M2.0 × 4” that fastens “SA, F BLADE STAY” and “F-BLADE”.

Align the bosses.

Auto-cutter model (CT-P293) only

<Precaution at reassembly>

Align the bosses at “F BLADE STAY” with the holes at “SA, FRAME BASE”. Check the orientation of

“F-BLADE”.

Remove “HEAD ASSY” while pulling the side edges at “SA, FRAME BASE” outwardly and keeping it clear of “HEAD SPRING”.

HEAD ASSY

HEAD SPRING

<Precaution at disassembly / reassembly>

When disassembling, be careful not to loose “HEAD SPRING”. When reassembling, mount “HEAD ASSY” first and “SA, BLADE STAY” next. Then insert two “HEAD SPRING”. Check that “HEAD ASSY” is correctly inserted into “SA, FRAME BASE” and that the bosses at “HEAD ASSY” are located inside “HEAD SPRING”.

Insert “HEAD ASSY” into the window hole.

Check the bosses at

“HEAD ASSY”.

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CT-292/293 Series Service Manual

8. Disassembling “PE SWITCH ASSY”

Remove “SCREW, PHT (BT#3), M1.7 × 6” that fastens “SA, FRAME BASE” and “PE SWITCH ASSY”.

SCREW, PHT (BT#3), M1.7 × 6

Hole for screw

Keep the cable away from the frame.

Hole for boss

<Precaution at reassembly>

When reassembling, align the screw and the boss with the holes for them, respectively, then tighten the screw.

Keep the cable away from the frame.

9. Disassembling “SA, FRAME BASE”

Remove two “SCREW, PHT (ST#3), M3.0 × 6” that fasten “SA, FRAME BASE R & L”.

Remove “E-RING, 2.0” and detach “GEAR1, REDUCTION” from “SA, FRAME BASE R”. Then remove

“REDUCTION GEAR”.

E-RING 2.0

GEAR1, REDUCTION

SCREW, PHT (ST#3), M3.0 × 6 Hole for boss

REDUCTION GEAR

<Precaution at reassembly>

Align the bosses at “SA, FRAME BASE L” with the holes at “SA, FRAME BASE R”.

10. Disassembling “MOTOR ASSY”

Remove “SCREW, PHT (ST#3), M3.0 × 6” that fastens “SA, FRAME BASE R” and “MOTOR ASSY”.

MOTOR ASSY

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