Terminal Function; Knb-17A (Ni-Cd Battery) - Kenwood TK-290 Service Manual

TERMINAL FUNCTION

CN No. Pin No. Name I/O Function
TX-RX UNIT (X57-5390-10)
CN400 1 CH D I CH switch data.
2 CH A I CH switch data.
for 3 CH C I CH switch data.
X53 4 CH B I CH switch data.
(B/6) 5 E – GND.
6 VOL I Voltage level input for audio control.
7 5CM – 5V.
8 B+ – Power input after passing through the fuse.
9 B+ – Power input after passing through the fuse.
10 SB – Power output after power switch.
11 SB – Power output after power switch.
12 TOGGLE I Normally : 5V, switched toggle when
connected GND.
13 KEY2 I Key input.
14 Q6 O Key scan IC Q6 signal output.
15 Q7 O Key scan IC Q7 signal output.
16 LCDCS O Chip select output for LCD driver.
17 CLK O Clock data output for LCD driver.
18 DAT O Data output for LCD driver.
19 LAMP – Backlight LED control.
Normally : 0V, Lighting : 7.5V
20 TXLED – TX LED control.
Normally : 0V, Lighting : 7.5V
21 BLED – Busy LED control.
Normally : 0V, Lighting : 7.5V
22 5M – 5V.
CN401 1 TCONT O For optional board. (See page 22.)
2 OPPTT O For optional board. (See page 22.)
for 3 AMPSW O Audio AMP control switch output.
X53 4 EXAFC O External speaker switch control.
(A/6) 5 INAFC O Internal speaker switch control.
6 KRS O Key scan IC reset output.
7 KCK O Key scan IC clock data output.
8 SOD – Not use.
9 KEY1 I Key input.
10 KEY2 I Key input.
11 LCS – Not use.
12 PTT I PTT signal input.
13 N/CSW O Noise canseler microphone switch output.
14 NC – Not use.
15 CLK O Clock data output.
16 DAT O Data output.
17 E – GND.
18 SB – Power output after power switch.
19 SB – Power output after power switch.
20 5M – 5V.
21 MICE – MIC GND.
22 MIC I MIC signal input.
23 AF O Audio output.
24 AFE – Audio GND.
25 AFE – Audio GND.
69
TK-290
CN No. Pin No. Name I/O Function
26 SP+ I BTL input + for external speaker.
27 SP– I BTL input – for external speaker.
28 MUTE O Audio mute signal output.
29 SD TO O For optional board.
30 MAN D O For optional board.
31 LAMP O Backlight LED control.
Normally : 0V, Lighting : 7.5V
32 Q7 O Key scan IC Q7 signal input.
33 Q6 O Key scan IC Q6 signal input.
CN402 1 AFE – Audio GND.
2 AFE – AUdio GND.
CN403 1 SSW I EXT/INT speaker switch input.
2 SP+ O BTL output + for external speaker.
3 SP– O BTL output – for external speaker.
4 MSW I EXT/INT MIC switch input.
5 EMC I External microphone input.
6 ME – External microphone GND.
7 PTT I External PTT input.
8 PF I Programmable function key input.
9 NC – Not use.
10 E – GND
11 5M – 5V.
12 TXD O Serial data output.
13 RXD I Serial data input.
14 NC – Not use.
CONTROL UNIT (X53-3780-XX) (A/6)
CN1 1 Q6 O Key scan IC Q6 output.
2 Q7 O Key scan IC Q7 output.
for 3 LAMP I Backlight LED control.
X57 Normally : 0V, Lighting : 7.5V
4 MAN D I For optional board. (See page 22.)
5 SD TO I For optional board. (See page 22.)
6 MUTE I Audio mute signal input.
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 output.
12 MIC O MIC signal input.
13 MICE – MIC GND.
14 5M – 5V.
15 SB – Power output after power switch.
16 SB – Power output after power switch.
17 E – GND.
18 DATA I Data input.
19 CLK I Clock data input.
20 NC – Not use.
21 N/CSW I Noise canseler microphone switch input.
22 PTT O PTT signal output.
23 LCS – Not use.
24 KEY2 O Key output.
25 KEY1 O Key output.
TK-290
TERMINAL FUNCTION / KNB-17A (Ni-Cd BATTERY)
CN No. Pin No. Name I/O Function
26 NC – Not use.
27 KCK I Key scan IC clock data input.
28 KRS I Key scan IC reset input.
29 INAFC I Internal speaker switch input.
30 EXAFC I External speaker switch input.
31 AMPSW I Audio AMP control switch input.
32 OPPTT I For optional board. (See page 22.)
33 TCONT I For optional board. (See page 22.)
CN2 1 AFE – Audio GND.
for X57 2 AFE – Audio GND.
CN3 1 Q8 O Key scan IC Q8 signal output.
2 Q7 O Key scan IC Q7 signal output.
3 PTTE – PTT GND.
4 PTT I Normally : 5V, transmit when connected GND.
5 KI1 I Key input.
6 Q6 O Key scan IC Q6 signal output.
CN4 1 + – BTL + output for internal speaker.
2 – – BTL – output for internal speaker.
CONTROL UNIT (X53-3780-XX) (B/6)
CN101 1 E – GND.
2 TOGGLE O Normally : 5V, switched toggle when
for connected GND.
X57 3 KI2 O Key output.
4 Q6 I Key scan IC Q6 signal input.
5 Q7 I Key scan IC Q7 signal input.
6 CE I Chip select input for LCD driver.
7 CL I Clock data input for LCD driver.
8 DI I Data input for LCD driver.
9 LAMP – Backlight LED control.
Normally : 0V, Lighting : 7.5V
10 TX LED – TX LED control.
Normally : 0V, Lighting : 7.5V
11 BLED – Busy LED control.
Normally : 0V, Lighting : 7.5V
12 5M – 5V.
70
KNB-17A External VIew
KNB-17A Circuit Diagram
Discharge pin side
+
–
Breaker Breaker
(70±5°C) (80±5°C)
Diode
Thermister
+ –
T
Charge pin side
KNB-17A Specifications
Voltage ....................................... 7.2V (1.2V x 6)
Charging current ........................ 1500mAh
Dimensions (mm) ...................... 58.0 W x 110.8 H x 20.0 D
(Projections included)
Charger and charging time
KSC-19 (Normal Charger) ...... Approx. 8 hours
KSC-20 (Rapid charger) ......... Approx. 1.3 hour
Weight ....................................... 220g