2.3.4Power transmission route

Rotation of the motor gear is transmitted as shown below.

Gears on the outer side of the drive unit and on the left sides of the platen frame, main frame and control panel ASSY

Gears on the inner side of the drive unit

A: Motor gear

O: Sun gear 24/28

B: Sun gear 24/90

P: Planet gear 34P

C: Planet gear 34B

Q: Gear 19/38

D: Gear 40

R: Paper ejection roller gear

E: Gear 18/54

S: Clutch gear ASSY

F: Gear 37

T: Paper feed roller gear, Gear 43 ASSY

G: Separation roller gear

U: Planet gear 34C

H: Document ejection roller gear

V: Friction torque transmission ASSY (Gear 39/62)

I: LF roller gear

w: Ribbon drive gear (Gear 25)

J: Planet gear 34A

X: Gear 22/28

K: Gear 65/60

Y: Platen gear (Gear 25/27)

L: Gear 50

z: Gear 20

M: Gear 63

a: Ribbon take-up gear on the ribbon cartridge

N: Gear 44/38

 

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Image 27
Brother MFC-970MC, FAX-931, FAX-921 service manual Power transmission route