Adjustment - Pioneer X-HX700 Service Manual

6. ADJUSTMENT

6.1 CD SECTION
Note : There is no information to be shown in this CD adjustment.
6.2 TUNER SECTION
6.2.1 FM Tuner Section
• Set the mode selector to FM BAND.
• Connect the wiring as shown in Fig. 1, 2.
FM SG (1kHz, ± 75kHz dev.)
Step Adjustment
Frequency
No. Title
DET. waveform
1
Coil Adjustment
6.2.2 AM Tuner Section
• Set the mode selector to AM BAND.
• Connect the wiring as shown in Fig. 1, 2.
AM SG (400Hz, 30% Mod.)
Step Adjustment
Frequency
No. Title
(kHz)
531
Vt
1 (Tuning Voltage
1602
Adjustment)
2 IFT Adjustment 999
Tracking
603
3
Adjustment
1404
Reception
Frequency
Level
(MHz) (dBmV)
98 60
Reception
Frequency
Level
Display
(dBmV/m)
−
531kHz
−
1602kHz
S/N about 10dB 999kHz
50 603kHz
(S/N about 10dB) 1404kHz
Adjustment
Location
Display
• Adjust L7 so that the voltaghe between TP8 (+)
and TP9 (−) becomes 0V ± 50mV.
• Check the waveform with the oscilloscope, and
confirm so that the output level is about −11 ±
98MHz L7
2dBV and THD is about 0.5 ± 0.1%.
Confirm that the "TUNE" indicator in the LCD is
turned on.
Adjustment
Location
• Adjust L2 so that the voltage between TP6 (+) and TP7
L2
(−) becomes 1.0V.
−
• Set the reception frequency to 1602 kHz and confirm
that the voltage is about 6.1V.
1. Connect an electrolytic capacitor of about 10µF to TP9
(TP9 side is +), and terminate with TP10 by a resistor
of about 47kΩ. Connect the sweep input to the both
ends of terminated resistor.
2. Adjust T1 so that the marker of 450kHz ± 3kHz
T1 becomes the same level (single-peak characteristic of
IF becomes symmetrical).
3. Input 74dBµV from the SSG, confirm the waveform of
output signal so that the output level is −27 ± 2dBV
and THD is about 1 ± 0.5%. And confirm that the
"TUNE" indicator in the LCD is turned on.
Connect an oscilloscope to TP3 (L) and TP4 (R), and
L1
adjust L1 (603kHz) and TC1 (1404kHz) repeatedly so that
TC1
the output level becomes maximum.
X-HX700
Specifications
Specifications
33