Read Panasonic KX-TCA385RU Service Manual online
11
KX-TCA385RU
4.2.9.
LED Circuit
• DPU(IC100) controls each LEDs.
4.2.10.
Vib Circuit
• Vibrator is controlled by IC1-23 pin.
Type of LED
LED ON
LED OFF
Bell LED (Green)
LED531
LED531
IC401-7pin = High
IC401-7pin = Low
Bell LED (RED)
LED530
LED530
IC401-5pin = High
IC401-5pin = Low
Key back-light LEDs (White)
LED520 - LED525
LED520 - LED525
IC401-3pin = High
(Q521 = ON)
(Q521 = ON)
IC401-3pin = Low
(Q521 = OFF)
(Q521 = OFF)
VIB ON
VIB OFF
IC1-23 pin
High
Low
VOUT of IC501
1.4V
0V
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