Kenwood TH-D74E Service Manual page 22

Pin No. Name I/O
CN183(to BARANT)
1 SW I SW signal
2 GND - GND
3 MW I MW signal
2.3.6 TX-RX UNIT (XC1-138)(6/7) BARANT
Pin No. Name I/O
CN184(to MW/SW)
1 MW O MW signal
2 GND - GND
3 SW O SW signal
2.3.7 TX-RX UNIT (XC1-138)(7/7) KEY
Pin No. Name I/O
CN1(to CONTROL)
1 KEY_O4 I key matrix
2 KEY_O3 I key matrix
3 KEY_O2 I key matrix
4 KEY_O1 I key matrix
5 KEY_O0 I key matrix
6 KEY_I4 O key matrix
7 KEY_I3 O key matrix
8 KEY_I2 O key matrix
9 KEY_I1 O key matrix
10 KEY_I0 O key matrix
11 LAMP GND - LAMP GND
12 SP+ I SP AF
13 SP- O SP GND
14 LAMP GND - LAMP GND
15 NC - NC
16 LAMP B I LAMP B
1-22 (No.RA044<Rev.001>)
Function
Function
Function