TC-600 Service Manual
59
Adjustment Description
The radio can be adjusted with PC programming software or by manual adjustment. Manual
adjustment procedure of TC-600 is shown as follows. (Refer to “Model Set Mode”and “
Manual Adjust
Mode”in Specification section.)
Instrument:
Radio Communication Test Set
1 set
Scanner
1 set
3A/10V Power Supply
1 set
Digital Voltmeter
1 set
3A Ammeter
1 set
Adjustment:
1. Initialization
It’
s necessary to set the model and initialize the radio before adjustment because there is no needed
information in EEPROM when the radio is manufactured. Please refer to the “
Model Set Mode”in
Specification section for details.
2. Adjustment
Some items can be adjusted in Conventional Mode and the others in Manual Adjust Mode. Turn on the
power; the radio enters the Conventional Mode. If Manual Adjust Mode is enabled, turn on the power
while holding down PTT and MONI key simultaneously, the radio enters Manual Adjust Mode in 2
seconds. (Refer to “Manual Adjust Mode”in
Specification
section.)
VCO
Item
Condition
Measurement
Adjustment
Specification
/Remarks
Test Instrument Terminal
Part
Method
1. Power Supply 1.power supply voltage 7.2V DC
2.Transmit VCO
Lock Voltage
1. TX High. Turn to CH14 in
manual adjust mode and press
PTT.
Digital Voltmeter
CV
TC1
3.0V±0.1V
2. TX Low. Turn to CH13 in
manual adjust mode and press
PTT.
>0.7V
3. Receive
VCO L ock
Voltage
1. RX High. Turn to CH14 in
manual adjust mode.
TC2
2.6V±0.1V
2. RX Low. Turn to CH13 in
manual adjust mode.
>0.7V
Note: The radio transmits no matter whether VCO is locked or unlocked. Enter the Manual Adjust
Mode for check in case of unlocked TX VCO.
