Kenwood TK-378G, Service Manual

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TK-378G
16
7. DQT TCXO TEST CH: TX Low Deviation meter ANT PC key
Balance TX Center Oscilloscope SP/MIC connector
(PC MODE) TX High AG
[180] (Wide/Narrow) AF VTVM
PTT:ON
8. DQT VCO TEST CH: TX Low Make the
Balance TX Center demodulation
Adjust TX High waves into
(PC MODE) LPF:3kHz square waves.
[Wide] HPF:OFF
PTT:ON
[Narrow] TEST CH: TX Center
PTT:ON
9. QT VCO TEST CH: TX Low
Balance TX Center
(PC MODE) TX High
240
[VQT]=[VDQT] x
180
PTT:ON
10.QT Deviation TEST CH: TX Low 0.90kHz(M) ±40Hz (M)
Adjust TX Center 0.80kHz(M4) ±20Hz (M4)
(PC MODE) TX High
LPF:3kHz
[Wide] HPF:OFF
PTT:ON
[Narrow] TEST CH: TX Center 0.42kHz ±40Hz
PTT:ON
11.DQT TEST CH: TX Low Power meter 0.75kHz ±50Hz
Devition TX Center Deviation meter
Adjust TX High Oscilloscope
(PC MODE) LPF:3kHz
[Wide] HPF:OFF
PTT:ON
[Narrow] TEST CH: TX Center 0.35kHz
PTT:ON
12.DTMF TEST CH: TX Center 2.5kHz ±0.1kHz
Deviation LPF:15kHz
Adjust HPF:OFF
(PC MODE) PTT:ON
[Wide]
[Narrow] TEST CH: TX Center 1.25kHz
PTT:ON
13.TONE TEST CH: TX Center 3.0kHz ±0.1kHz
Deviation LPF:15kHz
Adjust HPF:OFF
(PC MODE) PTT:ON
[Wide]
[Narrow] TEST CH: TX Center 1.5kHz
PTT:ON
14.BATT BATT terminal voltage:5.9V Power meter ANT PC key BATT terminal
Detection DVM BATT terminal voltage:5.9V
Writing
(PC MODE)
15.BATT 1) BATT terminal voltage:6.5V Check No blinking of LED
Detection PTT:ON
Check 2) BATT terminal voltage:5.7V Blinking of LED
(PC MODE) PTT:ON
ADJUSTMENT
Item Condition
Measurement Adjustment
Specifications/
Test equipment Terminal Parts Method
Remark