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PIONEER VSX80
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of PIONEER VSX80 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 131 (click to view)
5

6

7

8

A

USB Troubleshooting
Step 1: Connectors
CN701, CN702 Are the connectors securely inserted ? Yes To STEP 2 The output and GND may be short-circuited. Check the path between them.

6

IC703 (pin 1), IC702 (pin 7)

3.3 V Reg. output / 1.8 V Reg. input Is IC703 abnormally hot? Yes No

No Insert the connectors securely.

Is the voltage 3.3 V ? Yes

No

Replace IC703.

B

Step 2: Power supply
1
CN702 (pin 4) 5 V input Is there any loose connection of CN702? Yes

7

IC762 (pins 37, 47) FLASH ROM

Is the voltage 5V? Yes

No

No

Is the voltage 3.3 V ? Yes

No

Check the parts and patterns in the path.

Check the MOTHER Assy.

8

C

IC761 (pins 1,3,9,14,27,43,49) SDRAM

To STEP 1

2

IC703 (pin 3)

3.3 V Regulator IC input

Is the voltage 3.3 V ? Yes

No

Check the parts and patterns in the path.

Is the voltage 5V? Yes

No

Check the patterns in the path.

9

IC953 (pin 14) Is the voltage 3.3 V ? Yes

5-3 Converter

No

Check the parts and patterns in the path.

D

3

IC951 (pin 14)

3-5 Converter

Is the voltage 5V? Yes

No

Check the parts and patterns in the path.

10 IC701 (pins 16,33,64,76,112) USB Media control IC
Is the voltage 3.3 V ? Yes

No

Check the parts and patterns in the path.

4

IC771 (pin 5)

USB Power SW

Is the voltage 5V? Yes

No

Check the parts and patterns in the path.

E

11

IC702 (pin 1)

1.8 V Regulator output

5 IC7814 (pins 14, 15) DAC
Is the voltage 5V? Yes No Check the parts and patterns in the path.

Is the voltage 1.8 V ? Yes

No

Is IC702 abnormally hot? Yes

No

Replace IC702.

The output and GND may be short-circuited. Check the path between them.
F

A
VSX-1016V-K
5 6 7 8

131

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