SYN-TECH III P25 PORTABLE RADIO
SERVICE MANUAL
5-3
Syn-Tech III P25 Portable Radio ‘Problem-Solution’ Table is given in Table 5-3:
Table 5-3: Syn-Tech III P25 Portable Radio ‘Problem-Solution’ Table
PROBLEM POSSIBLE CAUSE(s) SOLUTION(s)
No display on
LCD when
radio is turned
on
Battery is exhausted. Battery is not
installed properly.
Recharge the battery. Remove battery and re-
install correctly to contact points.
No sound from
Loudspeaker
Volume level is too low or
Squelch level is adjusted too high.
Re-adjust volume and/or squelch level.
No response
to key press
Key lock is on.
Unlock the keypad by pressing Key lock
button.
No answer to
calls
Out of range of other stations or signal
is blocked by terrain.
Switch to H(High) output power or
Move closer until you have a “line-of-sight” to
the other station.
Charger LED
glows red and
rarely green
Charging process is almost finished.
Leave the radio in the charger to complete
charging.
Charger LED
glows orange
Communication error between charger
and the battery.
Replace the battery with a new MIDLAND
authorized battery..
Charger LED
glows blinking
red
Battery temperature is too high for fast
charging.
Charger starts fast charging automatically
when the battery block temperature falls.
Charger LED
glows red and
green
alternately
Radio is placed and removed from the
charger within 2-10sec.
Place the radio into the charger to start
discharging the battery.
Charger LED
glows blinking
orange
Faulty battery
Replace the battery with a new MIDLAND
authorized battery.