NEC PlasmaSync 50MP1 User Manual page 73

2-2. No video input signals available at the RGB 1 and 2 input circuits
Are the RGB signals available
at Pins 1, 3, and 5 of the POPC
connector? (See Fig. 14.)
YES
Are the HV signals available
at Pins 7, 9, 10, and 12 of the
POPC connector?
(See Figs. 15 and 16.)
NO
Are the HV signals available
at Pins 11, and 13 of IC5854?
(Similar waveforms in Figs.
15 and 16)
NO
Are the HV signals available
at TP5852 and TP5854?
(See Figs. 17 and 18.)
YES
IC5854 and peripheral circuits
are out of order.
Fig. 14 Signal RGB
Pins 1, 3, and 5 of connector P0PC
Fig. 17 Horizontal Sync Signals
TP5852
32us
NO
Are the RGB signals available
at TP5701 to TP5703?
(See Fig. 14.)
YES
Failure in the MAIN PWB.
Details described in Item 2-7.
(P.15)
YES
IC5861, IC5862, IC5872,
IC5873, and peripheral
circuits are out of order.
NO
IC5710 to IC5713 and
peripheral circuits are out of
order.
Fig. 15 Horizontal Sync Signals
Pins 13 of IC5864
1Vpp
32us
Fig. 18 Vertical Sync Signals
TP5854
5Vpp
17ms
9
NO
Failure in IC5703, IC5705,
and IC5707.
YES
Failure in IC5703, IC5705
and IC5707.
Conditions:
1. During the reception of PC
VGA 60Hz/gray scale
2. Mode VIDEO
Fig. 16 Vertical Sync Signals
Pins 11 of IC5864
5Vpp
17ms
5Vpp
5Vpp