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KX-TDA6178X, KX-TDA6178XJ (serv.man3) - Panasonic PBX Service Manual Supplement (repair manual). Page 11

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11
KX-TDA6178X / KX-TDA6178XJ
1.3.2.12. EXT-CID Transmission
The SLIC/CODEC (IC300A-W) generates the extension Caller ID signals (FSK signal) with the CPU control.
The data flow is shown below.
1.3.2.13. Power Supply Voltage Generator
• Block Diagram
The input from the main power supply is in 2 voltage levels: +15V, +40V.
Since the voltage levels: +15V, +3.3V, VBATa - VBATx are required onboard, voltage levels are generated onboard as written below.
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