Level Diagram; Terminal Function - Kenwood TK-390 Service Manual

LEVEL DIAGRAM

69
TK-390 TK-390
CN No. Pin No. Name I/O
TX-RX UNIT (X57-5400-10)
CN400 1 CH D
2 CH A
for 3 CH C
X53 4 CH B
(B/6) 5 E
6 VOL
7 5CM
8 B+
9 B+
10 SB
11 SB
12 TOGGLE
13 KEY2
14 Q6
15 Q7
16 LCDCS
17 CLK
18 DAT
19 LAMP
20 TXLED
21 BLED
22 5M
CN401 1 TCONT
2 OPPTT
for 3 AMPSW O Audio AMP control switch output.
X53 4 EXAFC
(A/6) 5 INAFC
6 KRS
7 KCK
8 SOD
9 KEY1
10 KEY2
11 LCS
12 PTT
13 N/CSW
14 NC
15 CLK
16 DAT
17 E
18 SB
19 SB
20 5M
21 MICE
22 MIC
23 AF
24 AFE
25 AFE
70

TERMINAL FUNCTION

Function CN No. Pin No. Name I/O
26 SP+
27 SP–
I CH switch data.
28 MUTE
I CH switch data.
29 SD TO
I CH switch data.
30 MAN D
I CH switch data.
31 LAMP
– GND.
I Voltage level input for audio control.
32 Q7
– 5V.
33 Q6
– Power input after passing through the fuse.
CN402 1 AFE
– Power input after passing through the fuse.
2 AFE
– Power output after power switch.
CN403 1 SSW
– Power output after power switch.
2 SP+
I Normally : 5V, switched toggle when
3 SP–
connected GND.
4 MSW
I Key input.
5 EMC
O Key scan IC Q6 signal output.
6 ME
O Key scan IC Q7 signal output.
7 PTT
O Chip select output for LCD driver.
8 PF
O Clock data output for LCD driver.
9 NC
O Data output for LCD driver.
10 E
– Backlight LED control.
11 5M
Normally : 0V, Lighting : 7.5V
12 TXD
– TX LED control.
13 RXD
Normally : 0V, Lighting : 7.5V
14 NC
– Busy LED control.
Normally : 0V, Lighting : 7.5V CONTROL UNIT (X53-3780-XX) (A/6)
– 5V.
CN1 1 Q6
O For optional board. (See page 22.)
2 Q7
O For optional board. (See page 22.)
for 3 LAMP
X57
O External speaker switch control.
4 MAN D
O Internal speaker switch control. 5 SD TO
O Key scan IC reset output.
6 MUTE
O Key scan IC clock data output.
7 SP–
– Not use.
8 SP+
I Key input.
9 AFE
I Key input. 10 AFE
– Not use.
11 AF
12 MIC
I PTT signal input.
O Noise canseler microphone switch output. 13 MICE
14 5M
– Not use.
O Clock data output. 15 SB
16 SB
O Data output.
17 E
– GND.
18 DATA
– Power output after power switch.
19 CLK
– Power output after power switch.
– 5V. 20 NC
21 N/CSW
– MIC GND.
22 PTT
I MIC signal input.
23 LCS
O Audio output.
24 KEY2
– Audio GND.
25 KEY1
– Audio GND.
Function
I BTL input + for external speaker.
I BTL input – for external speaker.
O Audio mute signal output.
O For optional board.
O For optional board.
O Backlight LED control.
Normally : 0V, Lighting : 7.5V
O Key scan IC Q7 signal input.
O Key scan IC Q6 signal input.
– Audio GND.
– AUdio GND.
I EXT/INT speaker switch input.
O BTL output + for external speaker.
O BTL output – for external speaker.
I EXT/INT MIC switch input.
I External microphone input.
– External microphone GND.
I External PTT input.
I Programmable function key input.
– Not use.
– GND
– 5V.
O Serial data output.
I Serial data input.
– Not use.
O Key scan IC Q6 output.
O Key scan IC Q7 output.
I Backlight LED control.
Normally : 0V, Lighting : 7.5V
I For optional board. (See page 22.)
I For optional board. (See page 22.)
I Audio mute signal input.
O BTL output – for external speaker.
O BTL output + for external speaker.
– Audio GND.
– Audio GND.
I Audio output.
O MIC signal input.
– MIC GND.
– 5V.
– Power output after power switch.
– Power output after power switch.
– GND.
I Data input.
I Clock data input.
– Not use.
I Noise canseler microphone switch input.
O PTT signal output.
– Not use.
O Key output.
O Key output.