Pioneer PDP-5000EX, Service Manual

Page: 80 / 204

PDP-5000EX
80
1 2 3 4
1 2 3 4
C
D
F
A
B
E
5.1.6 FLOWCHART OF FAILURE ANALYSIS FOR THE AUDIO SYSTEM
Flowchart of Failure Analysis for The Audio System
Is the audio signal displayed on
the "HDMI SIGNAL INFO2" page
of the Factory menu?
• Check if sound is muted, the VOL control is set to the minimum value, or if the audio signal is not input.
• Check if the audio cables or speaker cables are broken or loosely connected.
If no sound is output for any of the inputs, and if no signal is
input to the Power Amplifier, the PRE AUDIO Assy is definitely in failure.
Is the audio setting on the menu compatible
with the input signal?
If the voltage at the PR1
connector is low,
sound is not muted.
No
No
No
No
NG
NG
Yes
Yes
Yes
Yes
Yes
No sound from the speakers
Is the sound from all functions
not output?
Is the sound from INPUT 2, 3
(HDMI) functions not output?
Do use a DVI
→
HDMI conversion
cable?
Is the audio setting on the menu
correct?
Is a signal detected at power
amp output? (A4 pin 1, 2, 4, 5)
Is a signal detected at POWER AMP
Assy input? (A3 pin 9, 11, 13, 15)
Replace the SP LR1, 2 Assys
or A4-SP1, 2 cable.
No
Replace the cable between
A2 and M8 (from MAIN Assy).
Replace the cable between A3 and
PR2 (from PRE AUDIO Assy).
Yes Is the A_MUTE/A STBY_B signal
of the POWER AMP Assy normal ?
IC8201 (signal input block) is in failure.
IC8206 (OP AMP) is in failure.
Perform audio setting with ANALOG or AUTO
in the menu.
Check the X8201 (18.43 MHz).
Replace the MAIN Assy.
Replace the MAIN Assy.
Replace the PRE AUDIO Assy.
Replace the PRE AUDIO Assy.
I2S DAC is in failure.
Replace the PRE AUDIO Assy.
Replace the PRE AUDIO Assy.
Replace the POWER AMP Assy.
IC8201 output is abnormal.
No
IC8201 output is abnormal.
No
IC8207, IC8208, IC8209, and
IC8210 is abnormal. (rip sync block)
No
No
No
Check the audio setting of
playback machinery.
No
No
No
No
No
Set the audio setting correctly.
No
Connect an analog audio.
IC8202, IC8203 and IC8204 is
abnormal. (pre audio output block)
Failure analysis for the
audio system
⇒
AU1
Is the signal output from IC8201?
(pin 34, 33)(Waveforms
$
,
%
)
NG
Is the signal output from IC8205?
(pin 7, 8)(Waveforms
@
,
#
)
Is a signal detected at MCLK/SCK
/WS/SDO of PR1? Properly connect the cable between
the M9 and PR1 connectors.
Is HDMI_MUTE of PR 1 canceled?
Is the signal output from IC8201?
(pin 36, 35)(Waveforms
*
,
(
)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Is the signal output from
IC8203 and IC8204?
Is the signal input to IC8201?
(pin 28, 29)(Waveforms
^
,
&
)
Is the signal input to IC8201?
Failure in the line between the IC6801 (HDMI Rx)
and M9 connector on the MAIN Assy.
IC8201 - pin 28
V: 1 V/div H: 400
µ
sec/div
20
22 21
IC8201 - pin 36
V: 1 V/div H: 400
µ
sec/div
IC8201 - pin 35
V: 1 V/div H: 400
µ
sec/div
19
IC8201 - pin 29
V: 1 V/div H: 400
µ
sec/div
IC8201 - pin 33
V: 1 V/div H: 400
µ
sec/div
18 17
IC8201 - pin 34
V: 1 V/div H: 400
µ
sec/div
IC8205 - pin 8
V: 1 V/div H: 400
µ
sec/div
16 15
IC8205 - pin 7
V: 1 V/div H: 400
µ
sec/div
Waveforms