Table of Contents
Advertisement
KX-T2388
|
@ INTEGRATED TELEPHONE SYSTEM SECTION (For Handset)
2) Transmission Problems
Connect to the
telephone line and
lift the handset.
Can adiai tone be | NO
heard from the
handset?
YES
Is transmission
possible?
YES
Does a signal
appear at the
pin 15 of 1C2?
NO
YES] is the (+) side of
the MIC DC bias?
Check
the Mic.
Is Q1 ON?
YES
YES
Does a dial tone
appear at the
collector of Q6?
NO
Check pin 11
Check base
of IC2.
of Q6.
YES
Does a signal
YES
appear at the
pin 4 of IC2.
_————S
ae aan
|
NO
Check
IC2.
Check R4.
Check R14.
Check Q2.
Advertisement
Table of Contents
