DOWNLOAD Panasonic KX-TDA6175XJ / KX-TDA6175X Service Manual ↓ Size: 3.31 MB | Pages: 72 in PDF or view online for FREE

Model
KX-TDA6175XJ KX-TDA6175X
Pages
72
Size
3.31 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / 16-PORT SINGLE LINE TELEPHONE EXTENSION WITH MESSAGE LAMP CARD
File
kx-tda6175xj-kx-tda6175x.pdf
Date

Panasonic KX-TDA6175XJ / KX-TDA6175X Service Manual ▷ View online

7.16. POWER SUPPLY VOLTAGE GENERATOR
The input from the main power supply is in 3 voltage levels: +15V, +30V, +40V. Since the voltage levels: +15V, +5V, +3.3V, +40V,
+160V, +100V, -100V and AC 75Vrms are required onboard, voltage levels are generated onboard as written below.
A DC-DC converter that generates +3.3V and +5V from 15V input from the main power supply.It consists of a circuit that steps
down the voltage from +15V to +3.3V by the switching power supply of IC10, Q13 and L10, and a circuit that steps down the voltage
from +15V to +5V by the switching power supply of IC7, Q12 and L7.As protective circuits, IP4 that protects from +3.3V short circuit,
IP5 that protects from +5V short circuit, and an overvoltage protection that breaks IP1 by turning on FET in Q14 when a rise in
voltage of +3.3V/+5V is detected.
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KX-TDA6175XJ / KX-TDA6175X
8 TROUBLESHOOTING GUIDE
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