Toshiba FT-3809 BK Service Manual page 9

4. Base unit :
4.1 Test Equipment required and connection.
AC Power supply : 120V 50Hz
Audio
Generator
4.2. Preparation from alignment
Place the Base Board into test mode.
4.3. Alignment procedure :
Step Preset
1 Base Board into test
mode
2 Base Board into test
mode
3 Base Board into test
mode
4 Base Board into test
mode
5 Audio Gen : 1KHz,
-10dB (NO Load)
6 Audio Gen : 1KHz,
-30dB (NO Load)
RX -Loop-V TX-Loop-V
Base unit Pin4 &5 of BT1/
Quad-Tune /
Pin3 of BT1 (RF & Audio Board) Tx Audio
9V DC IN
Adapter
Adjustment
Connect the digital voltmeter to the point RX-
--- Loop -V. The reading should >0.25V DC and
<4.3V DC.
Connect the digital voltmeter to test point TX-
--- Loop -V. The reading should > 0.25V DC and
<4.3 DC.
BRC99 Connect the digital voltmeter to test point RX
AUDIO. Adjust for1.625VDC to 1.925VDC at
CH6.
BC56 Connect the Frequency counter to test point ANT.
Adjust for 903.8MHz at CH6.
BR40 Connect the VTVM to test point PIN 4 &5 of BT1
Adjust for -10dB
BR39 Connect the VTVM to test point TX Audio. Adjust
for -26dB.
8
Digital Voltmeter
RX-Audio
ANT
Frequency
Counter
Remark
VTVM