Pioneer PDP-5010FD, Руководство по обслуживанию

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PDP-5010FD
57
5 6 7 8
5 6
7
8
C
D
F
A
B
E
Is the function corresponding to
selected signal input selected? Select the corresponding signal
with the input selector.
No
Replace flexible cable.
No
Check the communication between
the CN8804 and CN4004 or
between CN8803 and CN4001 or
around of jack.
No
Check the circuit between IC4901 and
IC5001 and replace broken parts.
No
The panel is defective.
No
Check around IC4701 and check the
communications between IC4701
and the microcomputer. If there was
no ploblem replace IC4701.
No
Check around the IC that is found to
have a failure in communication and
the microcomputer. If there was no
ploblem replace MAIN Assy.
No
Replace the MAIN Assy.
Yes
Yes
Image for the component signals
is not displayed.
=> COMP/PC1
Has the signal arrived at IC4701 ?
Yes
Is a signal output from IC4701?
(pins 30, 32, 34)
Has the signal arrived at IC5001?
(pins 43, 48, 54)
Yes
Has the symptom been settled
when the MAIN Assy is replaced?
Yes
Yes
Is the communication between
each IC on the MAIN Assy and
the microcomputer nomal?
Yes
15
18
14 13
17 16
13
IC4701 - pin 30 (component_PR)
V: 500 mV/div H: 10
μ
sec/div
13
IC4701 - pin 30 (PC_R)
V: 500 mV/div H: 10
μ
sec/div
15
IC4701 - pin 34 (component_Y)
V: 500 mV/div H: 10
μ
sec/div
15
IC4701 - pin 34 (PC_G)
V: 500 mV/div H: 10
μ
sec/div
17
IC5001 - pin 48 (component)
V: 500 mV/div H: 10
μ
sec/div
17
IC5001 - pin 48 (PC)
V: 500 mV/div H: 20
μ
sec/div
14
IC4701 - pin 32 (component_Pb)
V: 500 mV/div H: 10
μ
sec/div
14
IC4701 - pin 32 (PC_B)
V: 500 mV/div H: 10
μ
sec/div
16
IC5001 - pin 43 (component)
V: 500 mV/div H: 10
μ
sec/div
16
IC5001 - pin 43 (PC)
V: 500 mV/div H: 10
μ
sec/div
18
IC5001 - pin 54 (component)
V: 500 mV/div H: 20
μ
sec/div
18
IC5001 - pin 54 (PC)
V: 500 mV/div H: 20
μ
sec/div
Waveforms
Input signal: Color-bar