Kenwood TK-285 Service Manual page 31

TK-285/(N)
Transmitter Section [Panel Tuning Mode except when Panel TEST Mode is specified.]
Item Condition
14.TONE 1) Adj item [TONE]
Deviation Adjust [∗∗∗]
Adjust LPF:15kHz
HPF:OFF
PTT:ON
15.BATT 1) Adj item [BATT]
Detection Adjust [∗∗∗]
Writing PTT:ON
16.BATT [Panel Test Mode]
Detection 1) CH-Sig:1-1
Check BATT terminal voltage:6.5V
PTT:ON
2) BATT terminal voltage:5.7V
PTT:ON
Receiver Section [Panel Tuning Mode except when Panel TEST Mode is specified.]
Item Condition
1. Sensitivity 1) Adj item [SENS]
Adjust Adjust [∗∗∗]
2) Adj item
[L SENS]
Adjust [∗∗∗]
SSG OUT:-118dBm (0.28µV)
MOD:1kHz / ±1.5kHz
2. Sensitivity [Panel Test Mode]
Check 1) CH-Sig:1-1
SSG OUT
-117dBm (0.316µV)
(MOD:1kHz / ±1.5kHz)
3. Squelch 1) Adj item [SQL]
(Preset) Adjust [∗∗∗]
Adjust SSG OUT:
12dB SINAD level +2dB
2) Adj item
[L SQL]
Adjust [∗∗∗]
30
ADJUSTMENT
Measurement
Test equipment
Power meter
Dev meter
Oscilloscope
AG
AF VTVM
Power meter
DVM
Measurement
Test equipment
SSG
AF VTVM
Oscilloscope
[C SENS] [H SENS]
[C SQL] [H SQL]
Unit Terminal Unit
Panel ANT Panel
universal
connector
Panel ANT Panel
BATT
terminal
Unit Terminal Unit
Panel ANT Panel
Universal
Connector
Adjustment
Specifications/
Remark
Parts Method
±0.05kHz
Encoder 1.45kHz
knob
Encoder After pressing BATT terminal
knob the PTT switch, voltage:6.2V
confirm that
one predeter-
mined numeric
in the range 1
to 256 appears
and then press
[C] key. That
numeric will be
stored in memory.
Check No blinking of LED
Blinking of LED
Adjustment
Specifications/
Remark
Parts Method
Encoder Adjust for 14dB SINAD or
knob maximam more.
SINAD.
Check 12dB SINAD or
more
Adjust to point
of opening
squelch.