Replacement Of Control Circuit Box Assy And P.c.board; Removal Of Control Box Assembly; Removal Of Main P.c.board - Samsung CM1929 Service Manual

4. Disassembly and Reassembly

4-6 Replacement of Control Circuit Box Assy and P.C.Board

4-6-1 Removal of Control Box Assembly

1 . Be sure to discharge any static electric charge built up on your body and avoid touching the touch control
circuitry .
2 . Remove 3 screws securing the Control Box Ass'y to the oven cavity .
3 . Disconnect all the lead wires, connectors and ground taping from the main control circuit board (PCB1) .
4 . Lift up the FPC connector hooks about 5mm upward which connects to the main control circuit board (PCB1)
from the tail of switch membrane of the control box assembly .
5 . Remove a screw securing the tapped taping to PCB1 .
6 . Remove Control Box Ass'y .
7 . To replace Digitron, remove 2 screws securing the PCB 4 .
8 . To replace Start Button Circuitry, remove 2 screws securing the PCB3 .
9 . Unbend the metal tabs holding the Panel -Base to Control Box body .

4-6-2 Removal of main P.C.Board

1 . Remove Control Box Assembly by following the steps 1~ 5 at left .
2 . Remove 4 screws securing the main P .C .Board to the bracket P .C .Board .
NOTE: When handling the the touch control circuitry, be most careful to avoid damage .
Cover Panel
Cover-Panel/L
Control Box Assy
Digitron(PCB4)
Panel Base
Window-Display
Wire Harness-C
Wire Harness-B
Switch-Membrane
Cover-Panel/R
12
Main P.C.Board
(PCB1)
Wire Harness-F
PCB3