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4-1
TROUBLESHOOTING
MAIN PWB System
No image presentation; picture error
NO
Are video signals present at Pins 11,
Errors in analog filter block (around the signal circuits before
17, and 24 of IC6502?
the AD converter)
YES
NO
Are signals of 3Vp-p present at Pins 1
Are pulses of 3Vp-p (video signal) normally generated at Pins
to 47 (odd numbers only) of the AD
35 to 166 (except for VDD and GND) of IC9004?
connector?
YES
YES
NO
Fault in plasma display
Fault in the digital signal processor system
module output block
NO
Is a clock signal present at Pin 49 of the
Fault in the AD connector block or peripheral circuits of X9001
AD connector?
YES
NO
Are signals of 3Vp-p present at Pins 51
Fault in the AD connector block or peripheral circuits of X9004
(HSYNC), 53 (VSYNC), and 76 (V period)
of the AD connector?
YES
NO
Is “0V” available at Pin 76 of the AD
Fault in the AD connector block or peripheral circuits of X9501
connector?
YES
NO
Are signals of 5Vp-p present at Pins 77,
Fault in the AD connector block or peripheral circuits of X9501
78, and 79 of the AD connector?
YES
NO
Is normal display available after the re-
Either cable defective
placement of the AD or PD or PH cable?
YES
NO
Is normal display available after the
Fault in the MAIN PWB
replacement of the MAIN PWB?
YES
NO
Are the normal outputs of 180V, 80V,
See the item of “Failure in Power ON.”
and D+5V available at the POWER unit?
YES
Fault in plasma display module
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Summary of Contents for PlasmaSync PX-42VM1G
Page 10: ...NEC Technologies PlasmaSync Plasma Monitor User s Manual...
Page 118: ...METHOD OF DISASSEMBLY 7 1 1 Diagonal view of the main unit rear panel...
Page 134: ...MEMO...
Page 137: ...9 1 PACKAGING Packing details A Safety bracket SASSY B 1 Safety bag SASSY...
Page 139: ...D CUSHION CARTON BOX 9 3 PACKAGING...
Page 141: ...9 5 PACKAGING F CARTON BOX OUT...
Page 147: ...CONNECTION DIAGRAMS 11 1...
Page 148: ...BLOCK DIAGRAMS 12 1 MAIN PWB BLOCK...
Page 149: ...BLOCK DIAGRAMS 12 2 VIDEO BLOCK...
Page 150: ...BLOCK DIAGRAMS 12 3 AUDIO BLOCK...
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