Kenwood TK-190 Service Manual page 50

TK-190
CN No. Pin No. Name I/O
TX-RX UNIT (X57-608X-XX)
CN400 1 CH D
2 CH A
to 3 CH C
X53 4 CH B
(CN101) 5 DGND
6 VOL
7 5CM
8 B+
9 B+
10 PWSW
11 PWSW
12 TGL
13 KEY2
14 Q6
15 Q7
16 LCDCS
17 CLK
18 DAT
19 LAMP
20 TXLED
21 BLED
22 5CM
CN401 1 TCONT
2 OPPTT
to 3 AMPSW O Audio AMP control switch output.
X53(A/6) 4 EXTAFC O External speaker switch.
(CN1) 5 INTAFC
6 NC
7 KES
8 DGND
9 KEY1
10 KEY2
11 LCS
12 PTT
13 N/CSW
14 5TB
15 CLK
16 DAT
17 E
18 SB
19 SB
20 5CM
21 MICE
22 MIC
23 AF
24 AFE
25 AFE
62
TERMINAL FUNCTION
Function
I CH switch data.
I CH switch data.
I CH switch data.
I CH switch data.
– Digital ground
I Volume voltage level input for audio control.
– 5V.
– Power input after passing through the fuse.
– Power input after passing through the fuse.
– Power output after power switch.
– Power output after power switch.
I Toggle switch output.
Normally : 5V, switched : 0V
I Key scan sense KEY2.
O Key scan signal.
O Key scan signal.
O LCD driver IC enable.
O LCD driver IC clock.
O LCD driver IC data.
– Backlight LED control.
Normally : 0V, Lighting : 7.5V
– TX LED control.
Normally : 0V, Lighting : 7.5V
– Busy LED control.
Normally : 0V, Lighting : 7.5V
– 5V.
O Optional board enable.
O Optional board enable.
O Internal speaker switch.
– Non connect.
O Key scan IC enable.
– Digital ground.
O Key scan input.
O Key scan input.
O LCD driver IC enable.
O PTT switch.
O Noise canseler microphone switch.
– 5V.
O Clock line.
O Data line.
– GND.
– Power output after power switch.
– Power output after power switch.
– 5V.
– MIC GND.
I MIC signal.
O Audio signal.
– Audio GND.
– Audio GND.
CN No. Pin No. Name I/O
26 SP+ I BTL input + for external speaker.
27 SP– I BTL input – for external speaker.
28 MUTE – Audio mute switch.
29 SD TO O Optional board enable.
30 MAN D O Optional board enable.
31 LAMP O Backlight LED control.
Normally : 0V, Lighting : 7.5V
32 Q7 O Key scan signal Q7.
33 Q6 O Key scan signal Q8.
CN403 1 NC – Not connect.
X57 2 RXD I Serial data input.
for 3 TXD O Serial data output.
uni- 4 5CM – 5V.
versal 5 E – GND
con- 6 NC – Non connect.
nector 7 REM I Programmable function key input.
8 PTT I External PTT input.
9 EME – External microphone GND.
10 EMC I External microphone input.
11 MSW I EXT/INT MIC switch input.
12 SP– O BTL output – for external speaker.
13 SP+ O BTL output + for external speaker.
14 SSW I EXT/INT speaker switch input.
CONTROL UNIT (X53-3930-10) (A/6)
CN1 1 Q6 O Key scan signal Q6.
2 Q7 O Key scan signal Q7.
to 3 LAMP I Backlight LED control.
X57 Normally : 0V, Lighting : 7.5V
(CN401) 4 MAN D I Optional board enable.
5 SD TO I Optional board enable.
6 MUTE I Audio mute switch.
7 SP– O BTL output – for external speaker.
8 SP+ O BTL output + for external speaker.
9 AFE – Audio GND.
10 AFE – Audio GND.
11 AF I Audio signal output.
12 MIC O MIC signal input.
13 MICE – MIC GND.
14 5CM – 5V.
15 SB – Power output after power switch.
16 SB – Power output after power switch.
17 E – GND.
18 DATA I Data line.
19 CLK I Clock line.
20 5TB – –5V
21 N/CSW I Noise canseler microphone switch input.
22 PTT O PTT switch.
23 LCS I LCD driver IC enable.
24 KEY2 I Scan input KEY2.
25 KEY1 I Scan input KEY1.
26 DGND – Digital ground.
27 KES I Key scan IC enable input.
Function