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TK-7102H
31
ADJUSTMENT
PCB Section
1. Setting 1) Power supply voltage
DC Power supply terminal : 13.6V
2. VCO lock 1) CH : TX high Digital voltmeter CV TC402 5.5V ±0.1V
voltage*
2) CH : RX high TC401 5.5V ±0.1V
3) CH : TX low Check 0.7V or more
4) CH : RX low
3. IF coil 1) CH : RX center (Wide) SSG AFV L301 3.25~3.35V (DC)
2) SSG output : –53dBm (501µV) Digital voltmeter
Mod : 1kHz
Dev : 3kHz
4. RF 1) CH : RX center (Wide) Tra generator ANT TC351 Adjust the BPF waveform
bandpass CH : RX low (Wide) Spectrum analyzer BPF TC352 to Fig. 1
filter CH : RX high (Wide)
2) Tra generator output : –30dBm
Connect the spectrum analyzer
to BPF terminal
* Adjustment of TX VCO lock voltage
1. Remove R516, F501, R518 and R524 (all on component side).
2. Remove PCB from chassis.
3. Transmit and check voltage at [CV] point.
Warning : Do not transmit if step “1.” is not complete.
4. Adjust of voltage can be done by tuning TC402.
Item Condition
Test equipment
Terminal
Parts Method
Specifications/
Remarks
Measurement
Adjustment
Fig. 1
Test Frequency (MHz)
Channel
K,M K2,M2
TX RX TX RX
1 : Center 160.100 160.050 149.100 149.050
2 : Low 146.100 146.050 136.100 136.050
3 : High 173.900 173.950 161.900 161.950
4 160.000 160.000 149.000 149.000
5 160.200 160.200 149.200 149.200
6 160.400 160.400 149.400 149.400
K2,M2
K,M