Sony RDR-GX257 Servise Manual page 50

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6. NO RGB/COMPONENT VIDEO SIGNAL WHEN PLAY DISC
No RGB / Component video
signal when play DISC
Check MAIN BOARD
PMI01 pin7,9,11(TP7,9,11)
is there any signal?
Check IO BOARD
MM1763 pin19,21,22
is there any signal?
MM1763 pin24,25,26
is there any signal?
SCART model?
TE
L 13942296513
SCART R/G/B line
are there any signal?
Check component mute
block in R/G/B mode
- YPbPr_mute_L
- Q891,Q892,Q893,Q894
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YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
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2 9
8
Video.Encoder block & VREF block
Check FFC connection MAIN - IO B/D
Check MM1763 I2C(CLK & DATA)
SW_5.3VA, SW12VA
Check Component Jack
Q Q
3 6 7 1 3 1 5
Check SCART Jack
co
.
6-6
RDR-GX257/GX380
9 4 2 8
Check MPEG IC
0 5 8 2 9 9 4 2 8
m
9 9
9 9