Adjustment Method - JVC RC-BM5 Service Manual

RC-BM5

Adjustment method

Measuring instructions required for
adjustment
1. AM signal generator
2. FM signal generator
3. Inter mediate frequency sweep generator
4. FM stereo signal generator
5. Low-frequency oscillator
(oscillation frequency 50Hz-20kHz, 0dB output
with 600 ohm impedance)
6. Attenuator (600 ohm impedance)
7. Electronic voltmeter
8. Distortion meter
9. Torque gauge (cassette for CTG-N)
10. Wow & flutter meter
11. Frequency counter meter
12. Test tape
VT712 : For tape speed and wow flutter
VT724 : For reference level
VT702 : For playback frequency
VT702 : For head azimuth adjustment
13. Blank tape
TAPE : AC-225
Measurement conditions
Power supply voltage
AC120V/60Hz
1-16
Measuring instruments
Radio section
FM 1kHz, 22.5kHz deviation
FM STEREO : 1kHz, 67.5kHz deviation
pilot signal 7.5kHz
AM : 1kHz, 30% modulation
Reference output :
Speaker output 0.5W(1.2V) 3.2 ohm
Standard mode of function knob :
Selects FM or AM in tuner mode
Bass boost: OFF
Preset EQ: Flat
Main volume: Reference output
Cassette amplifier section
Reference output :
Speaker output 0.5W(1.2V) 3.2 ohm
Standard mode of function knob :
Press TAPE knob of select TAPE mode
CD section
CD test disc : CTS-1000