PIONEER VSX81T
Manual de Servicio

5

6

7

8

A

K
IC401 (Pin 4) IC201 (Pin 6) Is there a LR clock ? Yes IC201 (Pin 77) BCKO Is there abnormality at the parts and patterns in the path? Yes IC401 (Pin 9) Is there a bit clock ? Yes IC401 (Pin 2) No No No Is there abnormality at the parts and patterns in the path? No Replace IC401.

Check the following points when the source is compression or DVD-A. SDTO Is there abnormality at the parts and patterns in the path?

Is there No a audio data (with Sch source)?

No

Failure in 2nd DSP block, Go to Step 9. Is there abnormality at the parts and patterns in the path?

B

Is there No a audio data (with Sch source)? Yes IC201 (Pin 5) CDTO

No Replace IC401.

Failure in 2nd DSP block, Go to Step 9.

Is there a bit clock ? Yes IC201 (Pin 7)

No

Is there abnormality at the parts and patterns in the path?

No Replace IC401. Is there No a audio data (with Cch source)? Yes IC401 (Pin 10) Is there abnormality at the parts and patterns in the path? No
C

FDTO Is there abnormality at the parts and patterns in the path?

Failure in 2nd DSP block, Go to Step 9.

Is there a audio data ? Yes IC401 (Pin 3)

No

No Is there No a audio data (with Cch source)? Yes IC201 (Pin 4) BDTO
D

Failure in 2nd DSP block, Go to Step 9.

Is there abnormality at the parts and patterns in the path?

No

Replace IC401.

Is there a audio data ? Yes

No

Is there abnormality at the parts and patterns in the path?

No Replace IC401. Is there No a audio data (with SBch source)? Yes IC401 (Pin 11) Is there abnormality at the parts and patterns in the path? No

IC401 (Pins 25,24) FLO, FRO

Failure in 2nd DSP block, Go to Step 9. Is there abnormality at the parts and patterns in the path?

Is there a analog audio output? Yes

No Check the parts and patterns (short-circuit) in the path including the DSP assy and others. No Replace IC401.

Is there No a audio data (with SBch source)? Yes

No

Replace IC401.

E

Is there a analog audio output at CN402-pins 7 and 5? Yes Is not there poor contact in CN402-pins 7 and 5? Yes

No Check the parts and patterns in the path on the DSP assy.

IC401 (Pins 22,21) SLO, SRO

Is there a analog audio output (with Sch source)? No Replace CN402. Yes

No

Check the parts and patterns (short-circuit) in the path including the DSP assy and others. No Replace IC401.

F

L
VSX-2016AV-S
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