Kirisun PT558, Service Manual

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14
PROBLEM SOLUTION
No
.
The
indicator
lights red
when in
transmitti
ng but no
voice can
be heard. A. The power amplifier tube Q11 is broken and
there is no power output and please change it with
a new tube.
B. The microphone is broken, and please change it
with a new one.
C. The operational amplifier IC3 is broken, and
please change it with a new one.
The
indicator
lights
green
when in
receiving
but no
voice can
be heard. A. The speaker is broken, and please change it
with a new one.
B. The audio amplifier IC8 is broken and please
change it with a new one.
C. The switch tube Q36 and Q35 is broken, and
pleas change it with a new one.
D. The operational amplifier IC6 is broken, and
please change it with a new one.
Cannot
program
the radio
parameter
s
normally. A. Make sure the programming cable is well
connected.
B. The computer RS-232 serial port output is
unmoral, and please fix the computer.
C. The MIC is not well connected with the SPK
socket. Check the socket and if it is unable to work
normally please change it with a new one.
5
6
7
Appendix 1 Abbreviations
AMP amplify, amplifier
ANT antenna
APC automatic power control
BPF band pass filter
CTCSS continuous tone control squelch system
DCS digital code squelch
DEMOD demodulation
2
E PROM electrically erasable programmable read-only memory
HPF high pass filter
IDC instantaneous deviation control
IF intermediate frequency
LED Light-Emitting Diode
LNA low noise amplifier
LPF low pass filter
MCU micro control unit
MIC microphone
MOD modulation
MONI monitor
PLL phase lock loop
PTT push-to-talk
RX receiver
SPK speaker
TCXO temperature compensated crystal oscillators
TX transmitter
UL un-lock
VCO voltage control oscillator
Chapter 9 KBC-58L Charger
9.1 Charger Specifications
A) Idling Input Current: 30mA
B) Charging Terminal Maximum Idling Voltage: 8.8V
C) Constant current charging: 200 270mA
D) Maximum Charging Time: 7 hours
E) Maximum Charging Voltage Limit: 8.45 0.1V
9.2 Charging and Charging Indicator
A) When DC inputs power voltage 14~20V, the indicator lights
yellow.
B) When the battery is inserted into the charger, the red and
yellow indicator lights. (The battery power is lower than 8.1 0.1 V. )
(When the voltage is lower than 6.0V, the red indicator become light
slowly after about 20 seconds.)
C) When the battery voltage is lower than 8.1 0.1 V, the
charger charge the battery with constant current. (Charging current
is 200
270mA. It needs 3~4 hours to charge a battery that has
been discharged completely.)
D) When the battery voltage is higher than 8.1 0.1 V, the
charging current will decrease gradually; when the battery voltage is
8.2
8.4V, the charging current will decrease quickly; when the
battery voltage is 8.4 8.5V, the charging current will close to zero
(then the charger begins constant voltage output) and charging
stops. This course takes about 2~3 hours.
E) When the battery voltage is 8.2 8.4V, the red, yellow and
green indicator lights. When the battery voltage is 8.3 8.5V, the
red indicator becomes dime and the green and yellow indicator light.
LED red: Charging indication
LED yellow: Power indication
LED green: Charging completion
Note: After putting the battery pack that has been discharged
completely into the charger, its red indicator needs about 1~2
minutes to turn light.
PT558 SERVICE MANUAL
Red
Yellow
Green
DC input