Pioneer vsa 805 service manual
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Page 1
(U) PIONEER
The Art of Entertainmem
Service
Manual no -_
' I= RRV1473
AV DIGITAL-SURROUND AMPLIFIER
VSA-BOSS
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
T Power R uirement Remarks
ype VSA- 805$ eq
HVXJ O ACZZD- 230v
HYXJ O ACZZO- 230v
CONTENTS
1. DISASSEMBLY ............................................ 2 5' PCB PARTS LIST ..................... . 34
2. EXPLODED VIEWS. PACKING 6. IC INFORMATION " 39
AND PARTS LIST .......................... 4 7. FL INFORMATION ................................... 41
3. BLOCK DIAGRAM ------------------------------------ 10 8. REMOTE CONTROL UNIT
4. SCHEMATIC AND [CU-VSA027 (AXD7091)] -------------------- 42
PCB CONNECTION DIAGRAMS """ 11 9. PANEL FACILITIES """"
10 SPECIFICATIONS ................................... 49
PIONEER ELECTRONIC CORPORATION 4-l. Meguro I»Chome. Meguro-ku, Tokyo 153. Japan
PIONEER ELECTRONICS SERVICE, INC. PO. Box 1160. Long Beach. CA 905014760, U.S.A,
PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087. Keereyglaan 1.9120 Melsale. Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchavd Road. #1000 Lane Crawford Place, Singapore 0923
© PIONEER ELECTRONIC CORPORATION 1996 we m ,9 PM, Mm"
Page 2
VSA - 8055
1. DISASSEMBLY
- CAUTION l
taken off.
more than SW/lo Q.
more than 5W/10 Q.
You will get an electrlc shock If you touch the Radiator (Heat-slnk) when the AC power cord is
connected to the power source. Also, the Electrolytlc Capacltor contains a charge even when
the Ac power cord ls unplugged. so the charge must be removed when the bonnet has been
@Connect the Radiator (top side) and either the Chassis or the Rear panel for 2 to 3 seconds with a Resistor of
®Connect the +B lead on the 12 and either the Chassis or the Rear panel for 2 to 3 seconds with a Resistor of
1.1 PS 8i FUNC ASSY
. Remove the Bonnet case.
. Remove the two screws® ,
. Remove the screw®.
.Remove the four screws 6) holding the PS & FUNC
assy.
5. Remove the Round knob L and remove the screw @
between the volume and the front panel.
6. Remove the Vol. assy from the PS & FUNC assy.
7. Remove the rear panel, and power block from the
chassis at the same time, according to the Fig. l.
awry--
VOL, Assy
i\ Korew®
Screw (D
Screw @
Front Panel
Screw® PS 8. FUNC Assy
l\ \
\O \
W10.
fi=
Power Block
\
Ll
Rear Panel Screw®
Chassis
Fig.1