Pioneer KRP-500P - Video-Display-Related Problems; Audio-Related Problems

45
KRP-500P
5
6 7 8
5
6 7 8
A
B
C
D
E
F
Ye s
Ye s
Ye s
Ye s
Ye s
Video-Display-Related Problems
Note: As reset light emission
from the G9 panel is dim, be
sure to reduce the ambient
light for checking.
• Check the DRF SW.
• If the drive was turned off with the RS-232C command or with the
remote control unit, turn the unit off then turn the drive on.
• In a case of dark cells or repeated on/off.
• In a case of dark cells.
Failure in the display.
Check with the combination of the moving/slanting ramp or other mask patterns and mirror function:
• Moving pattern: For checking erroneously discharged cells, load change is constantly caused on a screen.
• Ramp pattern: For checking gradation expression.
• Mirror function: For checking if a defective indication is interlocked with mirror inversion, in order to identify
a defective point.
When the MR is replaced,
is the problem resolved?
When the system cable is replaced,
is the problem resolved?
[SM for the MR]
Failure analysis of the MR MAIN BLOCK Assy => MA3
Ye s
Replace the system cable.
No
No
Ye s
Audio-Related Problems
When the system cable is replaced,
is the problem resolved?
When the MR is replaced,
is the problem resolved?
[SM for the MR]
Failure analysis of the audio system => AU1
Ye s
Replace the system cable.
Replace the panel
chassis.
[SM for the Display]
Failure analysis of the audio system => PA1
No
Is there light emission by reset
discharge?
Is the drive OFF?
Ye s
Turn the drive ON.
Does an erroneous display
appear locally?
Does that erroneous display appear
by the unit of 1 address or 1 TCP?
Ye s
Does that erroneous display appear
by the unit of 1 scan?
[SM for the Display]
Failure analysis of the drive => DR4
[SM for the Display]
Failure analysis of the DIGITAL Assy => DG1
No
No
Is the panel mask properly
displayed?
[SM for the Display]
Failure analysis of the drive => DR2
No
No
No
Does the panel arbitrarily shut off
and on repeatedly? Or, are there
dark cells on the display?
[SM for the Display]
Failure analysis of the Display POWER SUPPLY Unit => PP3
[SM for the Display]
Failure analysis of the drive => DR2
No
No
[SM for the Display]
Failure analysis of the drive => DR1
[SM for the Display]
Failure analysis of the drive => DR3
Ye s
No
No