Panasonic MC-E761 Service Manual ▷ View online
13
REPLACEMENT OF MAIN PARTS
•
POWER CONTROL CIRCUIT / ON/OFF SWITCH /
SLIDING POTENTIOMETER
SLIDING POTENTIOMETER
(1) Power Control Circuit
1. Take out cord reel ass’y and motor unit as explained
previously in paragraph (1) “Motor”, points 1-4.
2. Disconnect yellow and black lead wires (provided with
quick-connect terminals) from the power control circuit
tabs. (Fig. 12)
tabs. (Fig. 12)
Fig. 12
Remove
(quick-
connect
terminals)
Power control circuit
3. Remove power control circuit from its fastening points and
disconnect the lead wires from the power control circuit.
(Fig. 13)
(Fig. 13)
4. Replace power control circuit with a new one and connect
the lead wires according to the schematic diagram.
5. Reinstall power control circuit in its holding points.
6. Place motor unit and cord reel ass’y into the lower body and
reassemble the remaining parts in the reverse order.
Fig. 13
Fig. 14
(2) ON/OFF Switch
1. Remove upper body as explained previously in paragraph
(1) “Motor”, points 1-3.
2. Take out cord reel ass’y and motor unit.
3. Release power control circuit from its fastening points.
4. Remove ON/OFF switch from the power control circuit and
replace with a new one. (Fig. 14)
5. Place power control circuit in its fastening points.
6. Reinstall motor unit and cord reel ass’y into lower body,
connect according to the shematic diagram and
reassemble the remaining parts in the reverse order.
reassemble the remaining parts in the reverse order.
Fastening points
ON/OFF
Switch
Power
control
circuit
14
REPLACEMENT OF MAIN PARTS
Fig. 15
(3) Sliding Potentiometer
1. Remove upper body as explained previously in paragraph
(1) “Motor”, points 1-3.
2. Take out the sliding potentiometer from its support and
remove lead wires (blue and grey) from the potentiometer
tabs. (Fig. 15)
NOTE: Observe the correct position of the lead wires
before installing the new one.
tabs. (Fig. 15)
NOTE: Observe the correct position of the lead wires
before installing the new one.
Sliding potentiometer
Grey lead wire
Blue
lead wire
Fig. 16
3. Replace the potentiometer with a new one and connect the
lead wires (blue and grey) to the potentiometer tabs.
4. Reinstall the potentiometer in its support and reassemble
the remaining parts in the reverse order. (Fig. 16)
•
CORD REEL UNIT / POWER CORD
(1) Cord reel unit.
1. Remove upper body and cord reel ass’y as explained
previously in paragraph (1) “Motor”, points 1-4.
2. Before removing the screw that fix the cord reel unit and
cord reel support unwind the power cord to release the cord
reel spring efficiency. Them remove the screw .(Fig. 17)
reel spring efficiency. Them remove the screw .(Fig. 17)
Fig. 17
Cord reel ass’y
15
REPLACEMENT OF MAIN PARTS
Fig. 18
3. Separate cord reel unit and cord reel support. (Fig. 18)
4. Replace the cord reel unit with a new one.
5. Reassemble cord reel unit and cord reel support and
5. Reassemble cord reel unit and cord reel support and
refasten the screw.
NOTE: Wind up the power cord extra times as indicated on
the spring plate to maintain the cord reel spring efficiency.
NOTE: Wind up the power cord extra times as indicated on
the spring plate to maintain the cord reel spring efficiency.
6. Connect the lead wires according to the schematic diagram
and place the cord reel ass’y into place. Then reassemble
the remaining parts in the reverse order.
the remaining parts in the reverse order.
Cord reel support
Screw
Cord reel unit
Fig. 19
Fig. 21
Fig. 20
(2) Power cord
1. Remove cord reel unit and dissamsenble it as explained
previously in paragraph (1) “Cord reel unit”, points 1-3.
2. Unwind the total power cord length from the cord reel.
3. Press and release the stopper on the cord reel and lift the
contact base by pushing the lower end. (Fig. 19)
4. Disconnect the power cord from the contact base and
replace it with a new one. (Fig. 20)
NOTE: Observe the colour of the power cord lead wires
before reinstalling the new one.
NOTE: Observe the colour of the power cord lead wires
before reinstalling the new one.
5. Insert the contact base through the cord reel slot and wind
up the total power cord length in the arrow direction as
indicated on the spring plate. (Fig. 21)
indicated on the spring plate. (Fig. 21)
6. Reassemble cord reel unit and cord reel support and
refasten the screw. Then wind up the power cord extra
times as indicated on the spring plate to maintain spring
efficiency.
times as indicated on the spring plate to maintain spring
efficiency.
7. Place cord reel ass’y into the lower body . Connect the lead
wires according to he schematic diagram and reassemble
the remaining parts in the reverse order.
the remaining parts in the reverse order.
Contact base
Blue wire
Brown wire
Stopper
16
REPLACEMENT OF MAIN PARTS
Fig. 22
Brake lever
unit
Fig. 23
•
BRAKE LEVER UNIT
1. Remove upper body as explained previously in paragraph
(1) “Motor”, points 1-3.
2. Turn upper body over exposing the underside and remove
brake lever unit by pressing it sidewards as indicated.
(Fig. 22)
(Fig. 22)
3. Replace the brake lever unit with a new one and reinstall it
in its lodging. (Fig. 23)
4. Reassemble upper body and remaining parts in the reverse
order.
Brake lever unit
Spring
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