Troubleshooting Guide; Check Power - Panasonic KX-TG1711MEB Service Manual

3.2.

Troubleshooting Guide

3.2.1.

Check Power

[Changed from original section "9.1.1. Check Power"]
3.2.1.1. Base Unit
Is the AC Adaptor inserted into AC outlet? (Check AC Adaptor's specification.)
Is input of IC2 (pin3) about 5.5V?
Is the output voltage of IC2 (pin2) about 2.65V?
Is C48(RESETQ) High?
Check X1, C23.
Check IC3.
Cross Reference
Power Supply Circuit (P.5)
YES
YES
YES
YES YES
NO
Check F1 is not opened, C34, C58, C40 is
not shorted.
YES
Check AC Adaptor.
NO
Check Power Supply Circuit.
NO
Check IC3.
8