Adjustments - Pioneer VSX-405 Service Manual

VSX-405, VSX-305
6. ADJUSTMENTS
ADJUSTMENT OF FM TUNER SECTION
@ Set the FM/AM selector to FM BAND.
@ Connect the wiring as shown in Fig. 1-1.
FM SG |_FM SG (1kHz, +75kHz dev.) | +75kHz dev.) Reception
Adjust so that the DC voltage of R151's both
ends becomes OV450mV.
Center R151
Adjustment ; paae
V = 0+50mV
OC VOLTMETER
Front-end
Sensitivity Less than 10
Less than 10 dBHV.
Check
Stereo
Distortion
Check
Stereo
Separation
Check
18 dBuv+3 dB.
TUNED IND. : i
anes 18 (+3 dB) : Adjust so that the indicator of TUNED IND.
Lighting Level starts to light up.
Less than 2%.
Check that it becomes within the standard by turn-
ing the IFT T101 in the FM/AM TUNER FE
MODULE less than +90° in case out of standard.
Less than 23 dB.
In case out of standard, cut the R157.
Note:
@ Make indicator adjustments in order of AM -> FM.
ADJUSTMENT OF MW TUNER SECTION
@ Set the FM/AM selector to AM (MW) BAND.
@ Connect the wiring as shown in Fig. 1-1.
; | AM SG (400Hz, 30% Mod.) _| SG (400Hz, 30% Mod ,
Maustment ales Adjustment Specifications
Title Frequency Level Displ Location
(kHz) (dB V/m) isplay
TUNED IND.
c e : Less than 65 dBuV/m.
meh hornaace Ez Less than 65 | 999 kHz*! In case out of standard, cut the R164.
Loop antenna
AM antenna terminal
asael DC
Fig. 1-1. AM and FM Adjustment Wiring Diagram
FM 75Q antenna terminal