Terminal Function; Charger); Rapid Charger); Knb-17A (Ni-Cd Battery) - Kenwood TK-190 Service Manual

TERMINAL FUNCTION / KNB-17A (Ni-Cd BATTERY)
CN No. Pin No. Name I/O
CN1 28 NC – Non connect.
to 29 INAFC I Internal speaker switch input.
X57 30 EXTAFC I External speaker switch input.
(CN401) 31 AMPSW I Audio amplifier switch.
32 OPPTT I Optional board enable.
33 TCONT I Optional board enable.
CN3 1 Q8 O Key scan signal Q8.
to 2 Q7 O Key scan signal Q7.
FPC 3 PTTE – PTT GND.
4 PTT I PTT signal input
Normally : 5V, Transmit : 0V.
5 KI1 I Key scan sense KEY1.
6 Q6 O Key scan signal.
CN4 1 + O BTL + output for internal speaker.
2 – O BTL – output for internal speaker.
CONTROL UNIT (X53-3930-10) (B/6)
CN101 1 DGND – Digital ground.
to 2 TOGGLE O Taggle switch.
X57 3 KI2 O Key sense KI1.
(CN400) 4 Q6 I Key scan signal.
5 Q7 I Key scan signal.
6 CE I LCD driver IC enable.
7 CL I LCD driver IC clock.
8 DI I LCD driver IC data.
9 LAMP I Backlight LED control.
Normally : 0V, Lighting : 7.5V
10 TX LED I TX LED switch.
Normally : 0V, Lighting : 7.5V
11 BLED I Busy LED switch.
Normally : 0V, Lighting : 7.5V
12 5CM – Mic ground.
KNB-17A External View
Function
KNB-17A Circuit Diagram
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
Charger and charging time
Weight ....................................... 220g
Discharge pin side
+
Breaker Breaker
(70±5°C) (80±5°C)
Diode
Thermister
+
Charge pin side
(Projections included)
KSC-19 (Normal Charger) ...... Approx. 8 hours
KSC-20 (Rapid charger) ......... Approx. 1.3 hour
TK-190
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