Daewoo DWF-4220 Series, Service Manual

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37
OSCILLATION UNIT
1. CIRCUIT DIAGRAM
2. EXPLANATION OF CIRCUIT
• As the OSCILLATION UNIT is a basic part of the MICOM DRIVE. If the oscillation doesn’t generate, we are able to
consider that the MICOM is destroyed.
• The waveform between the part of
!
and the GND.
• Specification of oscillator
It is in general use for the MICOM maker's recommendatory value of condenser which is fit for MICOM's characteristics.
SAFETY SWITCH UNIT
1. CIRCUIT DIAGRAM
XOUT
XIN
32
31
X1
4.194304 MHz
33pF
33pF
C18
C17
f = 4.194304 MHz
t
TYPE OF OSCILLATOR MAKER
RATING
CONDENSER
FREQUENCY
C17 C18
CRYSTAL
SUNNY 4.194304MHz 33pF 33pF
OSCILLATOR
R33, 220Ω
R26, 3.9KΩ
Safety
S/W
13
6V