Read Panasonic KX-UT113RU / KX-UT113RU-B / KX-UT123RU / KX-UT123RU-B (serv.man3) Service Manual online
10
KX-UT113RU/KX-UT113RU-B/KX-UT123RU/KX-UT123RU-B
3. Headset Call
Transmitting signal is input from headset microphone and amplified by IC105
→ input to IC501-pin H4 → A/D conversion,
Gain adjustment by a built-in DSP of IC501.
Receiving signal input from IP Line
Receiving signal input from IP Line
→ Gain adjustment and D/A conversion by DSP of IC501 → output from IC501-pin E2 →
output to headset speaker.
+
-
AG2
R144
MICBIAS2
AG2
C164
AG2
OPBIAS2
AG2
R143
HESMIC2
HESSPOUT2
IC105
3
2
1
C168
R142
C161
C165
C169
C167
C166
C170
L112
C178
AG2
R137
R155
C160
CN101 CN205
2
3
C187
AG2
R140
R141
IC501
BBIC
R547
H4
E2
C221
C217
C218
JK202
1
4
2
3
5
C226
C205
D245
21
D247
21
D246
21
L210
L209
L208
10
11
AG
AG
C207
R223
HEADGND
ASIC
IC205
HEADGND
HEADGND
HEADGND
HEADGND
L212
AG
HEADGND
Click on the first or last page to see other KX-UT113RU / KX-UT113RU-B / KX-UT123RU / KX-UT123RU-B (serv.man3) service manuals if exist.