KX-TCD297UAT, KX-TCA128UAT - Panasonic Telephone Service Manual (repair manual). Page 88

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34 SCHEMATIC DIAGRAM(BASE UNIT_MAIN (Line Interface))
SP OUT
ON: 2.5V
OFF: 0V
TAM play/
ringer signal
Caller ID, Bell
Relay (JT)
CLIP impedance
(NL)
Loop Current
TX_AF
RX_AF
Speaker
Tel 
Jack
IC11
IC12
NC
0.068
0.1
2.2
15K
330P
IC10
10P
10P
10P
1
1
CN3
68K
KX-TCD297 SCHEMATIC DIAGRAM (Base Unit_Main (Line Interface))
 , NC : No Components
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
KX
-T
CD2
97UAT
/
K
X
-T
CA1
28UAT
88
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