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KX-T4330
Circuit Diagram
| 4 INUSE/INTCOM
(®) ino7
R608
T102
:
|
ey
o r ]
6
R423
oy
WS"
+ ]
2
IC
i
RX DATA
@* \@ D25 R150
Gy erro
8
Tolc1@
(53) cpcmELL
AG
aug
Scag
TX
DA
(
4) RLY
DATAGQ2
hh
?
es
Fig. 29
Function:
This circuit is used for inilializing the microcomputer when the AC adaptor is connocted.
Circult Operation:
When the unit is switched ON. Then the voltage is shilted by D46 and power is supplied lo the CPU.
The voltage needed to reset the CPU is supplied from the collector of Q43.
When Q43 turns ON the resol terminal voltage drops. Tho CPU has been reset, and the unil can operate beyond poin! CA) in the
circuil vollage diagram.
Fig. 30
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