Brother International HL 1850 Service Manual - Page 151

voltage, Power, Supply

Page 151 highlights

CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY (16) Remove the gear 60 P/R and gear 72 MP from the conductor bearing 5, and remove the middle roller gear from the conductor bearing H. (17) Remove the two conductor bearing 5. (18) Turn the knob of the conductor bearing H as the figure shown below, and remove the conductor bearing H from the main frame L. Gear 72 MP Gear 60 P/R Conductor bearing 5 Conductor bearing H Middle roller gear Conductor bearing 5 I r (knob) Fig. 4-81 ttt li Conductor bearing H 3.16 Low-voltage Power Supply PCB ASSY (1) Remove the eight cup S tite 3x6 screws and the pan M3.5x6 screw with washer and the lead wire FG, and then disconnect the engine PCB connector. (2) Remove the PS PCB ASSY from the main frame. 2 UJ IVJJ PS PCB PS PCB ASSY -0. N 'I - Main frame Screw, cup S tite 3x6 Screw, cup S tite 3x6 Screw, pan M3.5x6 with washer k4-- Lead wire FG Screw, cup S tite 3x6 Screw, cup S tite 3x6 4-52

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CHAPTER
4
DISASSEMBLY
AND
RE
-ASSEMBLY
(16)
Remove
the
gear
60
P/R
and
gear
72
MP
from
the
conductor
bearing
5,
and
remove
the
middle
roller
gear
from
the
conductor
bearing
H.
(17)
Remove
the
two
conductor
bearing
5.
(18)
Turn
the
knob
of
the
conductor
bearing
H
as
the
figure
shown
below,
and
remove
the
conductor
bearing
H
from
the
main
frame
L.
Gear
72
MP
Gear
60
P/R
Conductor
bearing
5
Conductor
bearing
H
I
r
(knob)
Fig.
4-81
Middle
roller
gear
Conductor
bearing
5
ttt
l
i
Conductor
bearing
H
3.16
Low
-voltage
Power
Supply
PCB
ASSY
(1)
Remove
the
eight
cup
S
tite
3x6
screws
and
the
pan
M3.5x6
screw
with
washer
and
the
lead
wire
FG,
and
then
disconnect
the
engine
PCB
connector.
(2)
Remove
the
PS
PCB
ASSY
from
the
main
frame.
2
UJ
I
VJJ
PS
PCB
PS
PCB
ASSY
-0.
N
'I
-
Main
frame
Screw,
cup
S
tite
3x6
Screw,
cup
S
tite
3x6
Screw,
pan
M3.5x6
with
washer
k4--
Lead
wire
FG
Screw,
cup
S
tite
3x6
Screw,
cup
S
tite
3x6
4-52