Modulator Adjustment; Connection Diagram - Pioneer CDX-FM1277 Service Manual

6.4 MODULATOR ADJUSTMENT

- Connection Diagram

Linear Detector
(Spectrum Analyzer)
FM Tuner
DC V Meter
- Adjustment
Tuning Voltage
Adjustment
Balance Adjustment
Modulation
Adjustment
Antenna Antenna
Jack Plug
ANTENNA OUT
BAL
VR301
CN201
EXTENSION UNIT
DC Regulated
Power Supply
Note: When ajusting, the frequency is made 89.1MHz.
CD Signal Adjusting Point
-∞ L402
-∞ VR301
400Hz 0dB (*1) VR302
or
499Hz 0dB
*1 : L and R are input at the same time.
ANTENNA
SELECT
UNIT
TV
VR302
L302
MOD
CN401
L402
CN801
CN803
CN802
ACC
BACK UP
GND
Adjustment Method
DC V Meter:TV
3.0V±0.1V
Oscilloscope:BAL
38kHz signal becomes minimum
Linear Detector(Spectrum Analyzer) LEVEL = 7
135±5kHz
or
Oscilloscope:MOD
0.23Vpp
CDX-FM1277,FM1279
Oscilloscope
Notes
47