Pioneer PDP-6010FD Service Manual page 61

5
B
Has the sound been emitted from
the Headphones?
Waveforms
Input signal: L/R 1 kHz, 0.5 Vrms (VOL 30)
42 CN9251 - pins 2, 4 43 CN9251 - pins 5, 7
V: 2 V/div H: 1 mS/div V: 2 V/div H: 1 mS/div
47 48
IC9101 - pins 54, 55 IC9101 - pins 24, 25
V: 2 V/div H: 5 μS/div
V: 2 V/div H: 1 mS/div
52 IC9101 - pins 38, 39 53 IC8871 - pins 1, 7
V: 1 V/div H: 1 mS/div V: 1 V/div H: 1 mS/div
5
6
No
Is sound muting set?
No
Is the volume set to 0?
No
Is a signal output from IC9101?
(pins 38, 39)
52
Yes
Is a signal output from IC8871?
(pins 1, 7)
53
Yes
Check the cables between CN8801
and CN9351 or check around the
Headphones jack.
44 IC9201 - pins 34, 38
V: 10 V/div H: 5 μS/div
49
IC9151 - pins 2, 3
V: 2 V/div H: 1 mS/div
6
7
Yes
Cancel muting, then check again.
Yes
Raise the volume, then check again.
No
Check around the IC9101 and repair the failure points.
No Check the communications around the IC8871 and between the IC8871
and the microcomputer. If there was no ploblem, replace BH3544F.
NG
Replace the cables or SIDE IO Assy.
45 IC9201 - pins 44, 52
V: 10 V/div H: 5 μS/div
50
IC9151 - pins 5, 6
V: 2 V/div H: 1 mS/div
PDP-6010FD
7
8
A
C
46 IC9101 - pins 52, 53
V: 2 V/div H: 5 μS/div
D
51
IC9151 - pin 1, etc.
V: 2 V/div H: 1 mS/div
E
61
8
B
F