6
Fig. 6
Signal Y at Pin 15 of IC5504
Fig. 7
Signal C at Pin 13 of IC5504
Fig. 4
Pins 7 and 10 of Connector P0YU
(horizontal sync signals)
Fig. 5
Pins 9 and 12 of Connector P0YU
(vertical sync signals)
64us
64us
5Vpp
16ms
5Vpp
64us
Burst section : 300mV
64us
1Vpp
16ms
2. Video error
2-1. No video input signals available at VIDEO 1, 2, 3 (S-VIDEO)
YES
YES
Are the RGB signals available
Are the horizontal sync signals
Failure in the MAIN PWB.
at Pins 1, 3, and 5 of the P0YU
available at Pins 7 and 5 of the
Details described in Item
connector? (See Figs. 1 to 3.)
P0YU connector and the vertical
2-5. (P.13)
sync signals available at Pins
NO
9 and 12? (See Figs. 4 and 5.) NO
Failure in the VIDEO PWB.
YES
Are the RGB signals available
IC5709 and peripheral circuits
at TP5704 to TP5706?
are out of order.
(See Figs. 1 to 3.)
NO
YES
Is the RGB signal output ge-
IC5702, IC5704, IC5706, and
nerated from Pins 41 to 43 of
peripheral circuits are out of
IC5504? (Similar waveforms
order.
in Figs. 1 to 3)
NO
YES
Is the Y signal input applied to
IC5504 and peripheral circuits
Pin 15 of IC5504, and the C
are out of order.
signal input to Pin 13?
(See Figs. 6 and 7.)
NO
Ternary Y/C separation is defective in the NTSC mode.
→
1
No pictures available only in NTSC mode (P.7)
3-line Y/C separation defective in the PAL mode.
→
2
No pictures available only in PAL mode (P.8)
Conditions:
1. During the reception
of VIDEO NTSC C-
BAR
2. Mode VIDEO
Fig. 1 Signal G
Pin 1 of Connector P0YU : 1.4Vpp
TP5704 ; 8Vp-p
Fig. 2 Signal B
Pin 3 of Connector P0YU : 1.4Vpp
TP5705 ; 1.8Vpp
Fig. 3 Signal R
Pin 5 of Connector P0YU : 1.4Vpp
TP5706 ; 1.8Vpp
Summary of Contents for PlasmaSync 50MP1
Page 1: ...USE THIS SERVICE MANUAL WHEN SERVICING Model PLA 50V1 ...
Page 10: ...PlasmaSync Plasma Monitor User s Manual NEC Technologies ...
Page 64: ...TROUBLESHOOTING 4 1 ...
Page 80: ...METHOD OF ADJUSTMENTS 5 1 ...
Page 98: ...CIRCUIT DESCRIPTION 6 1 ...
Page 113: ...METHOD OF DISASSEMBLY 7 1 ...
Page 134: ...PACKAGING 8 1 ...
Page 135: ......
Page 136: ......
Page 137: ......
Page 138: ......
Page 139: ......
Page 140: ......
Page 141: ......
Page 142: ......
Page 143: ......
Page 144: ......
Page 145: ......
Page 146: ......
Page 147: ...PART LIST 9 1 ...
Page 158: ...CONNECTION DIAGRAMS 10 1 ...
Page 160: ...BLOCK DIAGRAMS 11 1 ...
Page 163: ...SCHEMATIC DIAGRAMS 12 1 ...
Page 164: ......
Page 165: ......
Page 166: ......
Page 167: ......
Page 168: ......
Page 169: ......
Page 170: ......
Page 171: ......
Page 172: ......
Page 173: ......
Page 174: ......
Page 175: ......
Page 176: ......
Page 177: ......
Page 178: ......
Page 179: ......
Page 180: ......
Page 181: ......
Page 182: ......
Page 183: ......
Page 184: ......
Page 185: ......
Page 186: ......
Page 187: ......