Toshiba FT-8989 Service Manual page 8

Receiver Section
Connections
AC 120V
60Hz
Preset
Place the Base Unit in RX SENS mode (step 4) in accordance with the precedure on page 3.
Alignment Procedure
step Preset to Adjustment
SG: 1mV
1 (Discriminator
No modulation
SG: 1mV
2 1 kHz ±8kHz
deviation
SG: -6.0 dBµ µ µ µ µ V
3
No modulation (SQ Point)
Alignment Point Location on Base Main PCB and Base RF PCB
Base Main PCB
RF SG
RF
-
Test Point
+
J4
DC IN 9V Jack
AC
Adapter
Connect the RF Signal Generator to the RF test point on the Base MAIN
L3
PCB. Make sure that the frequency is 902.952467 MHz.
Connect the DC Voltmeter to the AF test point. Adjust L4 to indicate DC
Voltage)
1.00 V.
RT2
Connect the AC Voltmeter across a 600-ohm dummy to the Telephone Line
(RX AF
Jack. Adjust RT2 for a 245 mV reading on the AC voltmeter.
Voltage)
Press the "PAGE" key to enter the TEST Mode 5. Make sure that the
RT1
frequency of RF SG output is 902.952467 MHz. Adjust RT1 to turn to the
point where the bell rings.
RT1
RT2
L3
AF Test Point
BASE Unit
Dummy Load
(600-ohm)
J1
TEL Line -
Jack
+
DC Voltmeter
AF
Terminal
Remarks
RF Test Point
6
AC Voltmeter
J1
TEL LINE Jack
J4
DC IN 9V Jack
T
S1
T/P Switch
P