Pioneer VSX-4000 Service Manual page 72

WA-> Gi-1e (ele /(=1,@)
16.2 SURROUND AMP SECTION
® SURROUND LEVEL ADJUSTMENT
Preparation
1) Adjust the SURROUND BALANCE VR (VR702) on 4) Set the SURROUND MODE to the DUSURROUND
the rear side to the center clicking position. (DOLBY)
2) Connect load (892). 5) Input sine wave signal of 1kHz, 260mV to the CD
3) Turn the power supply ON. input. Lch (or R ch) only.
(Be sure that the small signal assembly is operationg
normally.)
Millivolt
meter
SURROUND
In put assembly
terminal TP 6? Distortion
meter
Connection diagram
Adjusting method
1) Adjust with VR701 (LEVEL) so that the output of TP
pin 81 of the SURROUND assembly becomes 100mV
+5mV.
| TP @1)
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a eee RS,
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