Read Sharp DV-HR300H (serv.man8) Service Manual online
16
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
DV-HR300H
DV-HR300X
Is video signal output to pins of main unit
connector CN3001?
CN3001 pin 23 154_Y
CN3001 pin 19 154_B/U
CN3001 pin 20 154_R/V
FLOW CHART No.7
Playback images do not appear properly (from
Y/C
B
/C
R
output).
NO
Refer to Flow chart No.5 "Playback video signal is not output
from main PWB".
YES
NO
Is video signal input to pins of sub unit IC2802
and 2801?
IC2802 pin 2 OSD_Y_IN
IC2801 pin 1 OSD_P
B
_IN
IC2801 pin 14 OSD_P
R
_IN
YES
YES
Is 5V applied to IC2802 pin 7?
Is 5V applied to IC2801 pin 13?
Is video signal input to pins of IC2802 and
2801?
IC2802
pin 8 OSD_Y
IC2801
pin 3
IC2801
pin 5
pin 6
YES
NO
NO
NO
Check lines between pins of IC2802 and 2801 and pins of
IC2502.
IC2801 pin 8
→
IC2502 pin 8 OSD COM_Y
IC2801 pin 1
→
IC2502 pin 1
1
OSD_P
B
IC2801 pin 14
→
IC2502 pin 16 OSD_P
R
Is video signal input to each pin of IC2502?
IC2502 pin 8 OSD COM_Y
IC2502 pin 1
1
OSD_P
B
IC2502 pin 16 OSD_P
R
NO
Check or replace
IC2801.
YES
YES
Check or replace
IC2801.
Check PC_5V (1) line.
Check PC_5V (1) line.
NO
Is voltage of 5V supplied to IC2801 pin 13?
Is each video signal output to each pin of
IC2803?
IC2803
pin 3 OSD P
B
pin 5 OSD P
R
pin 6 OSD COM
Y
YES
NO
Check or replace
IC2801.
YES
Check PC_5V (1) line.
NO
Check circuits and lines between pins of main unit connector
CN3001 and input pins of IC2802/2801.
CN3001 pin 23
→
S2202 pin 23
→
Q2502, 2504, 2507
→
IC2802 pin 2 OSD_Y_IN
CN3001 pin 19
→
S2202 pin 19
→
Q2512, 2515
→
IC2801 pin 1 OSD_ P
B
_IN
CN3001 pin 20
→
S2202 pin 20
→
Q2513, 2516
→
IC2801 pin 14 OSD_ P
R
_IN
YES
NO
Is 5V applied to IC2502 pin 13?
Is IC2502 pin 12 PROGRE (H) line at "L" level?
STNDBY_5V line.
Is video signal input to each pin of IC2502?
IC2502 pin 6
IC2502 pin 5
IC2502 pin 3
YES
NO
YES
Check or replace
IC2502.
YES
Check PROGRE (H) line.
NO
NO
Check lines between pins of IC2502 and IC2503.
IC2502 pin 6
→
IC2503 pin 9
IC2502 pin 5
→
IC2503 pin 14
IC2502 pin 3
→
IC2503 pin 1
Is video signal input to each pin of IC2503?
IC2503 pin 9
IC2503 pin 14
IC2503 pin 1
YES
NO
Is 5V applied to IC2503 pin 13?
Is IC2503 pin 12 (DVD (H) line) at "H" level?
Check PC_5V (1) line.
Is video signal output to each pin of IC2503?
IC2503 pin 6 COM_Y
IC2503 pin 5 C
B
IC2503 pin 3 C
R
NO
YES
Check or replace
IC2503.
YES
Check DVD (H) line.
NO
1
1
YES
Check line from IC2501 pin 20 to component
Y
terminal (J2601)
and component terminal (J2601).
Check line from IC2501 pin 18 to component CB terminal (J2601)
and component terminal (J2601).
Check line from IC2501 pin 16 to component CR terminal (J2601)
and component terminal (J2601).
NO
NO
NO
Is each video signal output to each output
terminal?
Is
Y
signal output to component terminal
(J2601)?
Is C
B
signal output to component terminal
(J2601)?
Is C
R
signal output to component terminal
(J2601)?
YES
Check Q2522.
Check
T_V_MUTE and RGB CTL
line.
NO
NO
Check line from each pin of IC2503 to each pin of IC2501.
IC2503 pin 6
→
IC2501 pin 10 COM_Y
IC2503 pin 5
→
IC2502 pin 12 C
B
IC2503 pin 3
→
IC2502 pin 14 C
R
Is each video signal input to each pin of
IC2501?
IC2501 pin 10 COM_Y
IC2502 pin 12 C
B
IC2502 pin 14 C
R
YES
NO
Is voltage of 5V supplied to IC2501 pins 1 and 28?
Is IC2501 pin 13 "H" level?
Check PC_5V (1) line.
Is each video signal output to to each pin of
IC2501?
IC2501 pin 20 COMPO_Y
IC2501 pin 18 C
B
_OUT
IC2501 pin 16 C
R
_OUT
NO
YES
Check or replace
IC2501.
YES
Is
T_V_MUTE line "L" level?
Is RGB CTL
line "L" level?
NO
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