Adjustment - Pioneer VSX-D506S Service Manual

VSX-D506S, VSX-D456
6. ADJUSTMENT
6.1 TUNER SECTION
mw FM Tuner Section
e Set the mode selector to FM BAND.
e Connect the wiring as shown in Fig. 1-1.
FM SG | FMSG (kHz, #75kHz dev) _| +75kHz dev. | FMSG (kHz, #75kHz dev) _|
Adjustment Adjustment . :
Step No. Title Frequency Level Location Specifications
(MHz) (dBuV)
Center 98 Adjust so that the DC voltage between the 1C6201-
1 fea cats oak Non 80 or more L6207 Pin 4 and Pin 28 (or ® leads of C6224 and C6261)
Reane modulation becomes 0Vz50mv.
Front End L6102 Adjust so that the DC voltage between the IC6201-
Sensitivity 10 to 30 98MHz T6101 Pin 12 and GND (or ® leads of C6238 and GND)
Adjustment becomes at maximum level.
Stereo MH Minimize the distortion with 1/8 rotation of the
TUNED IND. MH Adjust so that the indicator of TUNED IND.
Lighting Level pe | ne | om | none
Notes:
© Before adjusting, make sure there is no gap between L6101 and L6102. If there is a gap between them, bring them into contact
with each other first, and then make adjustments.
@ Make indicator adjustments in order of AM— FM.
mw AM Tuner Section
e@ Set the mode selector to AM BAND.
e Connect the wiring as shown in Fig. 1-1.
AM SG (400Hz, 30% Mod.)
Adjustment
Location
(dBuV/m)
47 (+2dB 999kH2"! VR6202 | Adjust so that the indicator of TUNED IND.
*1: For the area using 10kHz step, frequencies should be 1000 kHz
Loop antenna
AM antenna terminal
PRODUCT
Fig. 1-1 AM and FM Adjustment Wiring Diagram
wee--eee DC
Voltmeter