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echnical Bulletin
PAGE: 1/5
Model:
Subject:
From:
Mojito
SC740 and Jam indicator turns on.
Technical Services Dept., GTS Division
Classification:
Troubleshooting
Mechanical
Paper path
Other ( )
Part information
Electrical
Transmit/receive
Date:
04-Jul-00
Prepared by:
No.:
RA293007
M. Tsuyuki
Action required
Service manual revision
Retrofit information
Some booklet finishers (A763) may exhibit the following problem. Please check the
machine at installation or at the next customer site visit.
SYMPTOM
When making copies in staple mode, an IC on the finisher board shorts and SC740 is
displayed. After the main switch is turn off and on, a jam is indicated.
CAUSE
The cable of the guide plate motor is caught between the guide plate unit and frame. In the
worst case, the cable covering peels off and the +24V line is shorted to ground. These two
factors combine to cause the finisher board to be damaged.
ACTION
[A]
1. Hold up the proof tray and open the top cover [A].
[B]
2. Unhook the upper rear cover [B] and remove it (3 screws).
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Model:
3. Check to see if the cable [C] is caught.
4. If it is not caught, the finisher is Ok. If it is caught, go on to the next step.
Mojito
Date:
04-Jul-00
NG
No.:
[C]
RA293007
NG
OK
[D]
5. If the cable is caught at area [D], go on to the next step. If not, the finisher is OK.
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Model:
[E]
6. Remove the lower rear cover [E] (4 screws).
Mojito
[G]
[F]
Date:
04-Jul-00
No.:
RA293007
7. Disconnect the connector [F] and remove the grounding wire [G] (1 screw).
[H]
[I]
8. Unhook the two stoppers [H] and remove them.
[J]
9. Remove the slide guide [I] by pulling it up.
10. Remove the shift tray unit [J] by pulling it up.
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Model:
10. Remove the upper shift guide [K] (6 screws (5 x M4, 1 x M3).
11. Remove the lower shift guide [L] (2 connectors, 6 screws [3 x M4, 3 x M3]).
Mojito
[K]
[L]
Date:
04-Jul-00
No.:
RA293007
[M]
12. Loosen the rear side screws [M] of the exit unit.
13. Free the cable [N].
14. Check the surface of the cable.
15. If the cable wires are visible, wrap them with vinyl tape.
[N]
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Model:
16. Reassemble the machine.
Mojito
[O]
Note: When reinstalling the shift tray unit, release the clutch gear [O] of the tray lift
motor by carefully inserting a screwdriver.
Date:
04-Jul-00
No.:
RA293007
COUNTERMEASURE
The length of the cable has been decreased and the route of the cable has been modified.
Serial numbers of finishers which may have this problem:
Model Code Serial Number:
A763-14 : From first production to L0740030077
A763-17 : From first production to H5000400375
A763-22 : From first production to H5000300440
A763-26 : From first production to 4D80300090
A763-27 : From first production to H5000300571
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PAGE: 3/3
Model:
0M
Mojito
Page A763-1 Correction
1.1 SPECIFICATIONS
Incorrect
Paper Capacity (80 g/m2, 20 lb):
Tray Modes Paper size Capacity
Proof tray
Shift tray
No staple
Staple
One size
Mixed sizes
Date:
A4-S, LT-S or shorter 150 sheets
A4-L, LT-L or longer 75 sheets
A4-S, LT-S or shorter
A4-L, LT-L or longer
A4-S, LT-S or shorter
A4-L, LT-L or longer
1-5 sheets 25 sets
6-10 sheets 15 setsStaple tray
11-15 sheets 10 sets
(-L”: Lengthwise ,-S: Sideways)
11-Aug-00
1000 sheets
500 sheet
750 sheets
500 sheets
No.:
RA293010
Correct
Paper Capacity (80 g/m2, 20 lb):
Tray Modes Paper size Capacity
Proof tray
Shift tray
* The machine will inform the operator that the tray is full when any of the listed
conditions are met (whichever occurs first).
No staple
Staple
One size
Mixed sizes
A4-S, LT-S or shorter 150 sheets
A4-L, LT-L or longer 75 sheets
A4-S, LT-S or shorter
A4-L, LT-L or longer
A4-S, LT-S or shorter
A4-L, LT-L or longer
1-5 sheets 25 sets
6-10 sheets 15 setsStaple tray
11-15 sheets 10 sets
(-L”: Lengthwise ,-S: Sideways)
147mm stack height
or 1000 sheets (*)
74mm stack height
or 500 sheet (*)
110mm stack height
or 30 sets
or 750 sheets (*)
74mm stack height
or 30 sets
or 500 sheets (*)
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