
III –
5
2.3
Power Transmission Mechanism
The equipment has a single drive motor whose power transmission route can be switched by
the planetary gear systems and the solenoid. This switching allows the equipment to func-
tion in four operation modes (scanning, paper feeding/ejecting, recording, and copying
modes). For the details about the planetary gear systems, refer to Subsection 2.3.2.
2.3.1
Structure of the gear train
At the left side of the equipment, the rotational torque of the motor on the main frame is
transmitted to the gears on the main frame and then to the gears on the platen frame. These
gears drive the document feeding/ejecting related rollers, paper feeding/ejecting related roll-
ers, and the platen.
If the platen gear ("a" in the figure below) on the left end of the platen shaft rotates, the gear
33RB ("b") on the right end also rotates. This way, the rotational torque is transmitted to the
gears on the right side of the equipment.
At the right side of the equipment, the rotational torque is further transmitted via the friction
torque transmission ASSY to the ribbon drive gear ("e") which drives the ribbon take-up gear
in the ribbon cartridge.
Gear Train
: Gears on the main frame
: Gears on the platen frame
Main frame
Q (Gear 33)
P (Gear 18)
B (Sun gear 20/90)
(Front)
F (Separation roller gear)
D (Gear 33)
C (Planet gear 20B of Arm B ASSY)
M (Gear 39)
Z (Gear 33/45)
U
V
T (Paper feed roller gear, Gear 55)
Platen frame
G H J
E (Gear
20/40)
K (Document
ejection roller
gear)
I (White pressure
roller gear)
R (Sun gear
39/24)
N (Sun gear
36/27)
Y (Planet gear 44 of
Arm C ASSY)
O (Gear 39)
A (Motor gear)
L (Planet gear 20A of Arm A ASSY)
Clutch lever
(Gears 14/20)
(Gears 18/41)
Right side
Left side
Main frame
Platen frame
e (Gear 46 of Friction torque
transmission ASSY)
d (Gear 18)
c (Gear 20/40)
b (Gear 33RB)
e (Ribbon drive gear, Gear 24)
a (Platen gear, Gear 23)
X (Paper ejection roller gear, Gear 40)
W (Clutch gear ASSY)
S (Planet gear
34 of Arm P
ASSY)
Содержание MFC 1870MC
Страница 1: ...FACSIMILE EQUIPMENT SERVICE MANUAL MODEL FAX1170 1270 1570MC FAX1010 1020 1030 MFC1770 1870MC 1970MC ...
Страница 4: ...CHAPTER I GENERAL DESCRIPTION ...
Страница 10: ...CHAPTER II INSTALLATION ...
Страница 11: ...CHAPTER III THEORY OF OPERATION ...
Страница 43: ...CHAPTER IV DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 94: ...CHAPTER V MAINTENANCE MODE ...
Страница 101: ...V 6 Scanning Compensation Data List MFC1970MC Scanning Compensation Data List Other models ...
Страница 148: ...CHAPTER VI ERROR INDICATION AND TROUBLESHOOTING ...
Страница 191: ...D Power Supply 100 120V U S A CANADA TAIWAN ...
Страница 192: ...D Power Supply 200 240V EUROPE SOUTH AMERICA ...
Страница 193: ...D Power Supply 200 240V GULF ASIA CHINA ...
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