Panasonic RC-700E, Service Manual

Page: 10 / 21

READ CAREFULLY BEFORE ATTEMPTING ALIGNMENT
1. Set power source voltage to 230V/50Hz AC.
2. Set volume control to maximum.
3. Set band switch to AM or FM.
4. Output of signal generator should be no higher than necessary to obtain an output reading.
- AM-IF ALIGNMENT
Signal Generator or Sweep
Generator
Radio Dial Setting Indicator
(Electronic
Voltmeter or
oscilloscope)
Adjustment
(Shown in Fig.1 )
Remarks
Connections Frequency
Fashion a loop of
several turns of
wire and radiate
signal into loop of
receiver. 459 kHz 30%
Mod. at 400 Hz Point of non-
interference. (on/
about 600 kHz) Connect vert.
amp. of scope to
test point TP3.
Negative side to
test point TP4. T3 (AM IFT) Adjust
maximum
output.
- AM-RF ALIGNMENT
Signal Generator or Sweep Generator Radio Dial
Setting
Indicator
(Electronic
Voltmeter or
oscilloscope)
Adjustment
(Shown in Fig.1 )
Remarks
Connections Frequency
Fashion a loop of
several turns of
wire and radiate
signal into loop of
receiver. 511 kHz Variable
capacitor fully
closed. Connect vert.
amp. of scope to
test point TP3.
Negative side to
test point TP4. L10 (AM OSC
Coil) Adjust
maximum
output.
Fashion a loop of
several turns of
wire and radiate
signal into loop of
receiver. 1650 kHz Variable
capacitor fully
opened. Connect vert.
amp. of scope to
test point TP3.
Negative side to
test point TP4. CT1-3 (AM OSC
Trimmer) Adjust
maximum
output.
Fashion a loop of
several turns of
wire and radiate
signal into loop of
receiver. 600 kHz Tune to signal Connect vert.
amp. of scope to
test point TP3.
Negative side to
test point TP4.
[*1] L5 (AM ANT
Coil) Adjust
maximum
output.
by L5
moving
along
ferrite
Fashion a loop of
several turns of
wire and radiate
signal into loop of
receiver. 1500 kHz Tune to signal Connect vert.
amp. of scope to
test point TP3.
Negative side to
test point TP4.
CT1-4 (AM ANT
Trimmer) Adjust
maximum
output.
[*1] Fix antenna coil with wax after completing alignment
10