Kenwood TK-7100H Service Manual

Also see for TK-7100H: Specifications Service manual

TK-7100H32ADJUSTMENTReceiver Section1. Seisitivity 1) CH : RX low (Wide/Narrow) SSG ANT Check SINADCH : RX center (Wide/Narrow) Oscilloscope EXT. SP : 12dB or higherCH : RX high (Wide/Narrow) AF V.M2) SSG output Distortion meter: –118dBm (0.28μV) (Wide): –116dBm (0.35μV) (Narrow)Mod : 1kHzDev : ± 3.0kHz (Wide)Dev : ± 1.5kHz (Narrow)2. Squelch 9 1) CH : RX low (Wide) PC key Adjust to open the squelchCH : RX center (Wide/Narrow)CH : RX high (Wide)2) SSG output: –115dBm (0.4μV) (Wide): –114dBm (0.45μV) (Narrow)Mod : 1kHzDev : ± 3.0kHz (Wide)Dev : ± 1.5kHz (Narrow)3. Squelch 1 1) CH : RX low (Wide)CH : RX center (Wide/Narrow)CH : RX high (Wide)2) SSG output: –120dBm (0.22μV) (Wide): –119dBm (0.25μV) (Narrow)Mod : 1kHzDev : ± 3.0kHz (Wide)Dev : ± 1.5kHz (Narrow)PCB Section1. Setting 1) Power supply voltageDC Power supply terminal : 13.6V2. VCO lock 1) CH : TX high Digital voltmeter CV TC402 5.5V ± 0.1Vvoltage* 2) CH : RX high TC401 5.5V ± 0.1V3) CH : TX low Check 0.7V or more4) CH : RX low3. IF coil 1) CH : RX center (Wide) SSG AFV L301 3.25~3.35V (DC)2) SSG output : –53dBm (501μV) Digital voltmeterMod : 1kHz, Dev : 3kHz4. RF 1) CH : RX center (Wide) Tra generator ANT TC351 Adjust the BPF waveformbandpass CH : RX low (Wide) Spectrum analyzer BPF TC352 to Fig. 1filter CH : RX high (Wide)2) Tra generator output : –30dBmConnect the spectrum analyzerto BPF terminal* Adjustment of TX VCO lock voltage1. 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 MethodSpecifications/RemarksMeasurement AdjustmentFig. 1Item Condition Test equipment Terminal Parts MethodSpecifications/RemarksMeasurement Adjustment