Pioneer VSX-79 User Manual

Service
Manual
AUDIO/VIDEO STEREO RECEIVER
VSX-D 704
VSX-79
e The al above illustration shows VSX—D704S.
( PIONEER’
The Art of Entertainment
ORDER NO.
RRV1237
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Power Reguirement
yA
VSX — D704S VSX-79
The voltage can be converted by the
following method.
With the voltage selector
CONTENTS
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2. EKPLODED VIEWS, PACKING AND 8. IC INFORMATION «Re 63
PARTS LIST > DEAR EN KAS E UR ERRER N KE KE NEEN NEE a AER ere 3 9. FL INFORMATION YR RR A 65
3. SCHEMATIC AND PCB CONNECTION 10. BLOCK DIAGRAM Rh 66
DIAGRAMS SEIN ENER, NANA eg, 6/502, ab KL KRILO] 11 1 1. FOR VSX—D704S/KC, SD AND
4. PCB PARTS LIST Wao S RKR A 51 VSX — 79/KU/CA EAR laa W WI ————— 69
5. DISASSEMBLY HM 58 12. PANEL FACILITIES -:-:--........................ 74
6. PCB ASSY DIAGNOSIS ---- 59 13. SPECIFICATIONS ------........................ 82

Pioneer VSX-79 Specifications

General

Power Output	100 watts per channel into 8Ω (stereo)
Frequency Response	5Hz to 100kHz
Total Harmonic Distortion	0.06%
Dimensions	420 x 158 x 352.5mm
Weight	8.6kg
Type	AV Receiver
HDMI	Yes
Input Sensitivity	200mV (line)

Summary

SAFETY INFORMATION

SAFETY PRECAUTIONS AND CHECKS

General safety guidelines, leakage current check, and component safety notes.

SCHEMATIC AND PCB DIAGRAMS

OVERALL SCHEMATIC DIAGRAM

Comprehensive schematic diagram of the unit's circuitry.

AUDIO/VIDEO CIRCUIT SCHEMATICS

POWER AND SPEAKER CONNECTION SCHEMATICS

DISASSEMBLY PROCEDURES

PCB ASSEMBLY REMOVAL

Step-by-step guide for removing PCB assemblies from the unit.

PCB ASSEMBLY DIAGNOSIS

SERVICING ADJUSTMENTS

TUNER SECTION ADJUSTMENTS

Procedures for adjusting tuner sensitivity, VCO, and stereo distortion.

IDLE CURRENT & GUI ADJUSTMENTS

Adjustments for idle current and GUI screen display position.

RF AMP ASSY EXCHANGE

IC INFORMATION

SYSTEM BLOCK DIAGRAMS

MICROCOMPUTER SECTION DIAGRAM

Block diagram illustrating the microcomputer control section.

AUDIO/VIDEO SECTION DIAGRAM

Block diagram detailing the audio and video signal flow.

PANEL FACILITIES AND OPERATION

RECEIVER FRONT PANEL CONTROLS

CONNECTIVITY AND SYSTEM CONTROL

REMOTE CONTROL FUNCTIONS

SPECIFICATIONS