Pioneer PDP-5020FD Service Manual page 70

1
A
A
Has the sound of the Analog
broadcasting output?
Yes
Has the sound of the HDMI
output?
B
Yes
Has the sound of the Digital
broadcasting output?
Yes
C
Has the sound of the Analog RCA
and PC inputs output?
D
Yes
Has the sound of the side input
output?
E
Waveforms
Input signal: L/R 1 kHz, 0.5 Vrms (VOL 30)
48
IC4901 - pin 78, IC8201 - pin 4
V: 1 V/div H: 1 μS/div
F
70
1
2
Is a signal input to IC8201?
No
(pins 28, 29)
Yes
Check the communications around the IC8201 and between the IC8201
and the microcomputer. If there was no ploblem, replace MAP5601M.
No Is a SPDIF signal output from
IC4901? (pin 78)
Yes
Is a SPDIF signal input to
IC8201? (pin 4)
Yes
Check that the HDMI switch of the
MENU is properly set.
Check the FFC and cables between
No
the MAIN Assy and IO_AUDIO Assy.
Does not sound output even if replace
them?
No
Is a I2S signal input to IC8201?
(pins 100 to 102)
49 50
Yes
Check the communications around the
IC8201 and between the IC8201 and
the microcomputer. If there was no
ploblem replace the MAIN Assy.
No
Is a signal input to IC8201?
(pins 24 to 27, 32 to 37)
43
Yes
Check the communications around the IC8201 and between the IC8201
and the microcomputer. If there was no ploblem replace the MAIN Assy.
Check the cables between CN8601
No
and CN7505, and check around
the pin jack.
OK
Is a signal input to IC8201?
(pins 30, 31)
43
Yes
Check the communications around the IC8201 and between the IC8201
and the microcomputer. If there was no ploblem replace the MAIN Assy.
49 50
IC8201 - pin 100 IC8201 - pin 101
V: 1 V/div H: 10 μS/div V: 1 V/div H: 10 μS/div
PDP-5020FD
2
3
Check the communications between
No
the U5301 and the microcomputer
and between the U5301 and IC8201.
No
Replace the IC4901.
48
Poor contact of the connector or FFC, or cable is defective.
No
Replace FFC or cable.
48
NG
Check the communications around the IC8201 and between the IC8201
and the microcomputer. If there was no ploblem, replace MAP5601M.
Poor contact of the connector or
Yes
FFC, or cable is defective.
Replace FFC or cable.
No
Is a signal output from IC6001 of
the MAIN Assy?
51
Yes
Check around IC6001 and repair
the failure points.
No Check between input terminal and
IC8201 and repair the failure points.
44
NG
Replace the cables.
No Check between IC8201 and
CN7505 and repair the failure points.
44
51
IC8201 - pin 102
V: 1 V/div H: 10 μS/div
3
4
NG Replace the U5301 and
repair the failure points.
No
Repare the DTB block.
4