4-12
PCS-1500/1500P
Symptom: Cannot communicate through the T.120 port.
Symptom: External microphone cannot be used.
SS-14
UD-1
YES
NO
YES
YES
NO
NO
SS-15
AD-00
PCS-A300 is used
as the external
microphone
External microphone
works when it is replaced
by a normal external
microphone
External microphone is defective
It cannot be used
CN600 [1-3]
and CN600 [4-5] are
in range of 2.3 V
to 3.5 V ?
Q601 and its peripheral
4-1. Check Items Before Starting Self-diagnostics
Summary of Contents for PCS-1500
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