Kenwood TK-190 Service Manual page 40

TK-190
Item Condition
14. Transmission 1) Set panel test mode
S/N check CH No. : 3
Signalling No. : 1
Deviation meter filter setting
LPF : 300Hz
HPF : 3kHz
De-emphasis : 750µs
PTT : ON
15. BATT 1) Set panel test mode
detection CH No. : 3
writing Signalling No. : 1
Select BATT ∗ ∗ ∗
in panel tuning mode
PTT : ON
16. BATT 1) Set panel test mode
detection CH No. : 3
check Signalling No. : 1
BATT terminal voltage : 5.3V
PTT : ON
2) BATT terminal voltage : 6.5V
PTT : ON
Receiver Section
Item Condition
1. AF level 1) Set panel test mode
check CH No. : 3
Signalling No. : 1
SSG freq. : Each freq.
output : –53dBm/501µV
MOD. : 1kHz
DEV. : 2.4kHz
2. Hum and 1) Set panel test mode
noise ratio CH No. : 3
check Signalling No. : 1
SSG output : –53dBm/501µV
3. BPF coil 1) Set panel test mode
CH No. : 1
Use this Connect the spectrum
adjustment analyzer to TP3
procedure Signalling No. : 1
after replace- Push Monitor to 3 point
ing any of adjustment mode
the BPF Select SNS 75
coils M
40
ADJUSTMENT
Measurement
Test-
Unit Terminal
equipment
Power meter Panel ANT
Deviation
meter
Oscilloscope
AG Side Universal
AF VTVM
Power meter Panel ANT Side
DC VTVM Bottom BATT
terminal
Measurement
Test-
Unit Terminal
equipment
SSG Panel ANT
AF VTVM
Oscilloscope
Distortion
meter
Audio
analyzer
Tracking Panel ANT TX-RX L201
generator
Spectrum TX-RX TP3
analyzer
Adjustment
Unit Parts Method
Check
Monitor Write the voltage
level
Check
Adjustment
Unit Parts Method
Check
Adjust the BPF coil so that the waveform is peaked.
L202 The frequency with the peak waveform does not
L206 have to be the center frequency.
After finished peaking the waveform, perform a
3 point adjustment and set for maximum sensitivity.
Specifications/Remarks
42dB or more
6.2V
Cannot transmit
LED (TX) blinks
Transmit
Specifications/Remarks
0.55V± 0.3V (VOL.2)
5% or less
42dB or more
Fig. 1 :K