Sharp R-1900J Service Manual page 33

3. KEY UNIT (IN DOOR ASSEMBLY) REMOVAL
After removing door panel;
1. Remove the five (5) screws holding the key fixing plate to the door
frame.
2. Remove the key fixing plate from the door frame.
3. Remove the board cover from the key fixing plate.
4. Disconnect the flat ribbon cable of the key unit from the connector
of the switch unit.
5. Remove the connectors installed at the edge of the key unit ribbon
cable.
6. Tear the key unit from the key fixing plate.
7. Now, the key unit is free.
NOTE: 1) Before attaching a new key unit, remove remaining adhe-
sive on the key fixing plate surfaces completely with a soft
cloth soaked in alcohol.
2) When attaching the key unit to the key fixing plate, adjust
the upper edge and left edge of the key unit to the correct
position of key fixing plate.
3) Stick the key unit firmly to the key fixing plate by rubbing
with soft cloth to prevent scratching.
4. SWITCH UNIT REMOVAL
After removing door panel;
1. Remove the five (5) screws holding the key fixing plate to the door
frame.
2. Remove the key fixing plate from the door frame.
3. Remove the board cover from the key fixing plate.
4. Disconnect the flat ribbon cable of the key unit from the connector
of the switch unit.
5. Disconnect the harness from the connector of the switch unit.
6. Remove the one (1) screw holding the switch unit to the key fixing
plate.
7. Now, the switch unit is free.
5. FRONT DOOR GLASS REMOVAL
After removing door panel;
1. Remove the one (1) screw holding the glass stopper to the door
frame.
2. Slide the front door glass leftward (latch heads side) and then slide
it upward.
3. Release the upper edge of the front door glass from the tabs of the
door frame.
4. Now, the front door glass is free.
6. DOOR HANDLE, DOOR LEVER AND HANDLE
COVER REMOVAL
After removing door panel;
1. Remove the latch spring from the latch angle assembly and the
latch lever.
2. Remove the one (1) screw holding the latch angle assembly to the
door frame.
3. Remove the four (4) screws holding the latch angle assembly to the
door handle.
4. Now, the door handle is free.
5. Remove the door lever from the latch heads.
6. Remove the door lever from the handle cover by releasing the tabs.
7. Now, the door lever and the handle cover are free.
7. UPPER AND LOWER LATCH HEADS REMOVAL
After removing door panel;
1. Remove the latch spring from the latch angle assembly and the
latch lever.
2. Remove the one (1) screw holding the latch angle assembly to the
door frame.
3. Remove the four (4) screws holding the latch angle assembly to the
door handle.
4. Now, the door handle is free.
5. Remove the door lever from the latch heads.
6. Remove the two (2) latch heads and the latch lever from the latch
angle assembly together.
7. Remove the latch heads from the latch lever.
8. Now, the latch heads are free.
8. DOOR CASE REMOVAL
After removing door panel;
1. Remove the five (5) screws holding the key fixing plate to the door
frame.
2. Remove the key fixing plate from the door frame.
3. Remove the front door glass from the door frame, referring to
"FRONT DOOR GLASS REMOVAL".
4. Remove the door handle, the door lever with the handle cover from
the door frame, referring to "DOOR HANDLE, DOOR LEVER AND
HANDLE COVER REMOVAL".
5. Remove the one (1) screw holding the latch angle assembly to the
door frame.
6. Remove the latch angle assembly with the door latches from the
door frame.
7. Bend up all nails of the door case.
8. Remove door case from the door frame.
9. Now, the door case is free
9. NOTE FOR POSITION OF HARNESS AND PIPE
Before the door panel is reinstalled, make sure that the pipe should be
positioned at the correct place. And the harness should pass through
the holder of the door frame and the pipe, as shown in Fig.C-7.
Figure C-7. Inside of door
9 – 7
R1900J
Pipe
Harness
Holder
Door frame