Sharp HT-DV40H - Page 85

HT-DV40H
7 – 4
4. Video is not output normally
5. Audio is not output normally
6. HDMi Video has no output.
7. HDMi Audio has no output.
Yes
No
Put a disc on the DISC tray.
Are the video signals input to the pins of CNP8 as shown below?
CNP8 Pin1 Composite
CNP8 Pin2 VGND
CNP8 Pin3 C
CNP8 Pin4 Py
CNP8 Pin5 VGND
CNP8 Pin6 Y
CNP8 Pin7 Pb
CNP8 Pin8 Pr
Check the line between video out section and pins of CNP8
and CNP9.
Q11 to CNP8 Pin 8 (Pr) and Pin3 (C)
Q12 to CNP8 Pin 7 (Pb)
Q13 to CNP8 Pin 6 (Y)
Q14 to CNP8 Pin 1 (Composite)
Q11 to CNP9 Pin 4 (R)
Q12 to CNP9 Pin 3 (B)
Q13 to CNP9 Pin 2 (G)
Q14 to CNP9 Pin 1 (Composite)
Yes
No
Put a disc on the DISC tray.
Digital sound signal output from Pin 196, 198, 199, 201, 203
and 204 of IC1?
Check each line between IC1, IC6 and IC10.
Pin 196 of IC1 to Pin 8 of IC6 and Pin 46 of IC10.
Pin 198 of IC1 to Pin 7 of IC6 and Pin 45 of IC10.
Pin 199 of IC1 to Pin 6 of IC6 and Pin 44 of IC10.
Pin 201 of IC1 to Pin 4 of IC6 and Pin 48 of IC10.
Pin 203 of IC1 to Pin 30 of IC6 and Pin 2 of IC10.
Pin 204 of IC1 to Pin 2 of IC6 and Pin 18 of IC10 and Pin 17
of IC13.
No
Yes
Yes
Connect HDMi cable to HDMi connector
Is voltage of 3.3V supplied to VDD pin of IC6? Check 3.3V supply line CNP5 Pin 1.
Is voltage of 1.8V supplied to DVCC18 pin of IC6?
Check 1.8V supply line IC3 Pin 2.
Check Pin 16 -23 of IC6
No
Yes
Yes
Connect HDMi cable to HDMi connector
Is voltage of 3.3V supplied to VDD pin of IC6?
Check 3.3V supply line CNP5 Pin 1.
Is voltage of 1.8V supplied to DVCC18 pin of IC6?
Check 1.8V supply line IC3 Pin 2.
Check IC6 Pin 2 and 9. (Refer Figure 4)