Integra PLA-50FP1 Manual page 72

2. Video error
2-1. No video input signals available at VIDEO 1, 2, 3 (S-VIDEO)
Are the RGB signals available
at Pins 1, 3, and 5 of the P0YU
connector? (See Figs. 1 to 3.)
NO
Are the RGB signals available
at TP5704 to TP5706?
(See Figs. 1 to 3.)
NO
Is the RGB signal output ge-
nerated from Pins 41 to 43 of
IC5504? (Similar waveforms
in Figs. 1 to 3)
NO
Is the Y signal input applied to
Pin 15 of IC5504, and the C
signal input to Pin 13?
(See Figs. 6 and 7.)
NO
1
Ternary Y/C separation is defective in the NTSC mode.
→
No pictures available only in NTSC mode (P.7)
2
3-line Y/C separation defective in the PAL mode.
→
No pictures available only in PAL mode (P.8)
Fig. 4
Pins 7 and 10 of Connector P0YU
(horizontal sync signals)
64us
Fig. 6
Signal Y at Pin 15 of IC5504
64us
64us
YES
Are the horizontal sync signals
available at Pins 7 and 5 of the
P0YU connector and the vertical
sync signals available at Pins
9 and 12? (See Figs. 4 and 5.) NO
YES
IC5709 and peripheral circuits
are out of order.
YES
IC5702, IC5704, IC5706, and
peripheral circuits are out of
order.
YES
IC5504 and peripheral circuits
are out of order.
Fig. 5
Pins 9 and 12 of Connector P0YU
(vertical sync signals)
5Vpp
16ms
Fig. 7
Signal C at Pin 13 of IC5504
1Vpp
16ms
64us
6
YES
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
Conditions:
1. During the reception
of VIDEO NTSC C-
BAR
2. Mode VIDEO
Fig. 3 Signal R
Pin 5 of Connector P0YU : 1.4Vpp
TP5706 ; 1.8Vpp
5Vpp
Burst section : 300mV
Failure in the MAIN PWB.
Details described in Item
2-5. (P.13)
Failure in the VIDEO PWB.