Pioneer VSX-920-K Service Manual

ORDER NO.
PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION
2010
2010 Printed in Japan
VSX-920-K
RRV4048
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-920-K
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
This service manual should be used together with the following manual(s).
For SPECIFICATIONS and PANEL FACILITIES, refer to the operating instructions.
Model Type Power Requirement Remarks
VSX-920-K UXCNCB AC 120 V
Model No. Order No. Remarks
VSX-820-K/CUXCNSM RRV4043
K-ZZZ MAR.
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Pioneer VSX-920-K Specifications

Power

power requirements	AC 120 V/60 Hz
power consumption	270 Watts
standby power consumption	Less than 0.4 Watts

Weight and Dimensions

width	16.55 inches
height	6.23 inches
depth	13.71 inches
weight	21.3 lbs

Summary

2. BASIC ITEMS FOR SERVICE

2.1 JIGS LIST

Lists essential jigs required for performing diagnostics and service operations.

3. BLOCK DIAGRAM

3.1 OVERALL WIRING DIAGRAM

Illustrates the complete wiring interconnections between major assemblies and components.

3.2 OVERALL BLOCK DIAGRAM

Presents a high-level functional overview of the unit's internal architecture.

4. DIAGNOSIS

4.1 DIAGNOSIS FLOWCHART

Provides step-by-step diagnostic procedures to identify and resolve faults, starting with DSP issues.

[2] HDMI TROUBLESHOOTING

HDMI Simple Diagnosis

Offers simple diagnostic steps for common HDMI display and sound problems.

HDMI Troubleshooting

Detailed troubleshooting steps and procedures for addressing HDMI connection and authentication issues.

5. DISASSEMBLY

5.1 DISASSEMBLY

Provides detailed steps and illustrations for disassembling the unit, focusing on cable dressing.

6. EACH SETTING AND ADJUSTMENT

6.1 IDLE CURRENT ADJUSTMENT

Details the procedure for adjusting the idle current on the amplifier board for optimal performance.

7. SCHEMATIC DIAGRAM

7.1 INPUT ASSY

Presents the detailed schematic for the input assembly, showing component connections and signal paths.

7.2 AMP ASSY

Provides the schematic diagram for the amplifier assembly, detailing audio output stages.

7.3 SPEAKER, HEADPHONE and MIC ASSYS

Includes schematics for speaker, headphone, and microphone interface circuits.

7.4 PT, HP_GUIDE, CNT1, CNT2, GUIDE_L and GUIDE_R ASSYS

Displays schematics for various interface boards including PT, HP_GUIDE, CNT1, CNT2, and GUIDE assemblies.

7.5 VIDEO ASSY

Presents the schematic for the video processing circuitry, handling input and output signals.

7.6 F-VIDEO, FRONT and FUNCTION ASSYS

Provides schematics for front panel, F-VIDEO, and function control assemblies.

7.7 MAIN and REG ASSYS

Contains schematics for the main control board and voltage regulator assemblies.

7.8 HDMI ASSY (1/2)

Displays the first part of the HDMI assembly schematic, detailing interface circuitry.

7.9 HDMI ASSY (2/2)

Presents the second part of the HDMI assembly schematic, completing the interface circuit details.

7.10 DSP ASSY (1/2)

Shows the first part of the DSP assembly schematic, detailing digital signal processing components.

7.11 DSP ASSY (2/2)

Provides the second part of the DSP assembly schematic, completing the digital processing circuit.

7.12 USB ASSY

Displays the schematic for the USB interface assembly, including control and data transfer circuitry.

8. PCB CONNECTION DIAGRAM

8.1 INPUT ASSY

Illustrates the component placement and connection points for the Input Assy PCB.

8.3 SPEAKER, HEADPHONE and MIC ASSYS

Shows the PCB layout for speaker, headphone, and microphone interface assemblies.

8.4 PT, HP_GUIDE, CNT1, CNT2, GUIDE_L and GUIDE_R ASSYS

Displays PCB layout diagrams for PT, HP_GUIDE, CNT1, CNT2, GUIDE_L, and GUIDE_R assemblies.

8.5 VIDEO ASSY

Illustrates the PCB layout for the video assembly, showing component placement.

8.6 MAIN and REG ASSYS

Shows the PCB layout for the main control and voltage regulator assemblies.

8.7 HDMI ASSY (1/2)

Displays the first part of the HDMI assembly PCB layout, showing component placement.

8.7 HDMI ASSY (2/2)

Presents the second part of the HDMI assembly PCB layout, completing the interface board diagram.

8.8 DSP ASSY

Shows the PCB layout for the DSP assembly, detailing component placement and connections.

8.9 USB ASSY

Displays the PCB layout for the USB assembly, showing component placement.

9. PCB PARTS LIST