32
R- 370EK
R - 37 0ES
Figure C-9(a). Routing of 9-pin wire harness
Figure C-9(b). Routing of 9-pin wire harness
NOTE: For key unit
1. Before attaching a new key unit, wipe off remaining
adhesive on the door frame surfaces completely with
a soft cloth soaked in alcohol.
2. When attaching the key unit to the door frame, adjust
the upper edge and right edge of the key unit to the
correct position of door frame.
3. Stick the key unit firmly to the door frame by rubbing
with soft cloth not to scratch.
NOTE: For CPU unit
Handle the CPU unit carefully so that the ribbon
cable does not come off. Because the ribbon cable
is glued on the LCD and the printed wiring board
only by heated paste.
Figure C-10. CPU unit
Printed wiring board
of CPU unit
Liquid Crystal
Display (LCD)
Ribbon cable
DOOR PANEL
1. Disconnect the power supply cord.
2. Remove the door from the oven. Refer to "DOOR
REPLACEMENT".
3. To discharge the high voltage capacitor, wait for 60
seconds.
4. The choke cover should have been removed.
5. Remove the four (4) screws holding the door panel to
the door screen.
6. Now, door panel is free.
LATCH HEAD AND LATCH SPRING
7. Slide the latch head and remove it from the door frame
assembly with releasing the latch spring from the door
frame assembly and the latch head.
8. Now, the latch head and the latch spring are free.
CPU UNIT
7. Remove the two (2) screws holding the PWB cover to
the door frame assembly.
8. Remove the PWB cover from the door frame assembly.
9. Remove the one (1) screw holding the CPU unit to the
door frame assembly.
10.Releasing the two (2) tabs, remove the CPU unit with the
LCD holder from the door frame assembly.
11.Releasing the two (2) tabs, release the LCD from the
LCD holder.
12.Releasing the four (4) tabs, remove the LCD holder from
the CPU unit.
13.Disconnect the 9-pin wire harness from the CPU unit.
14.Disconnect the ribbon cable of the key unit from the CPU
unit.
15.Now the CPU unit is free.
DOOR FRAME ASSEMBLY
16.Releasing the four (4) tabs, remove the 9-pin wire
harness from the door frame assembly.
19.Now, the door frame assembly is free.
NOTE: For 9-pin wire harness
1. Before the PWB cover is reinstalled to the door frame
assembly, route the 9-pin wire harness under the tab
of LCD holder as shown in Figure C-9(a). And when
the PWB cover is reinstalled, route the 9-pin wire
harness under the hole of the PWB cover.
2. Before the door panel is reinstalled to the door frame
assembly, make sure that the 9-pin wire harness is
held by the four (4) tabs and two (2) holes on the door
frame assembly as shown in Figure C-9(b).
INDIVIDUAL DOOR PARTS REMOVAL
PWB Cover
CPU unit
Door frame
9-pin wire
harness
Hole of
PWB cover
Tab of LCD holder
PWB Cover
Hole of
PWB Cover
Tab
Tab
Tab
Hole on door frame
Hole on door frame
Door frame
Tab
9-pin wire harness
