Read Sharp DV-HR400H (serv.man2) Service Manual online
20
DV-HR400S/H
DV-HR450S
DV-HR480S/H
Is video signal output to pins of main unit
connector CN3001?
CN3001 pin 20 G/Y
CN3001 pin 21 B/CB
CN3001 pin 22 R/CR
FLO
W CHAR
T 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
YES
NO
Check lines between pins of CN3001 and IC2503.
CN3001 pin 20
→
IC2503 pin 9
CN3001 pin 21
→
IC2503 pin 14
CN3001 pin 22
→
IC2503 pin 1
Is video signal input to each pin of IC2503?
IC2503 pin 9 G/Y
IC2503 pin 14 B/CB
IC2503 pin 1 R/CR
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
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 Q2512.
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
→
IC2501 pin 12 C
B
IC2503 pin 3
→
IC2501 pin 14 C
R
Is each video signal input to each pin of
IC2501?
IC2501 pin 10 COM_Y
IC2501 pin 12 C
B
IC2501 pin 14 C
R
YES
NO
Is voltage of 5V supplied to IC2501 pins 1 and 28?
Is IC2501 pin 13 "H" level?
Check STNDBY_5V line.
Is each video signal output 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
Is video signal output to pins of main unit
connector CN3001?
CN3001 pin 20 G/Y
CN3001 pin 21 B/CB
CN3001 pin 22 R/CR
FLO
W CHAR
T No.8
Playback images do not appear properly (from R/G/B output).
NO
Refer to Flow chart No.5 "Playback video signal is not output
from main PWB".
YES
YES
NO
Check lines between pins of CN3001 and IC2503.
CN3001 pin 20
→
IC2503 pin 9
CN3001 pin 21
→
IC2503 pin 14
CN3001 pin 22
→
IC2503 pin 1
Is video signal input to each pin of IC2503?
IC2503 pin 9 G/Y
IC2503 pin 14 B/CB
IC2503 pin 1 R/CR
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
YES
Check line from IC2502 pin 15 to IC2681 pin 6.
Check IC2681 pin 2 output.
Check line from IC2502 pin 13 to SCAR
T
L1 terminal (SC2601)
and SCAR
T
L1 terminal (SC2601).
Check line from IC2502 pin 10 to SCAR
T
L1 terminal (SC2601)
and SCAR
T
L1 terminal (SC2601).
NO
NO
NO
Is each video signal output to SCAR
T
L1 output
terminal?
Is R OUT
signal output to SCAR
T
L1 output
terminal?
Is G OUT
signal output to SCAR
T
L1 output
terminal?
Is B OUT
signal output to SCAR
T
L1 output
terminal?
YES
Check Q2510.
Check T_V_MUTE
line.
NO
NO
Check line from each pin of IC2503 to each pin of IC2502.
IC2503 pin 6
→
IC2502 pin 4 COM_Y
IC2503 pin 5
→
IC2502 pin 6 CB
IC2503 pin 3
→
IC2502 pin 2 CR
Is each video signal input to each pin of
IC2502?
IC2502 pin 4 COM_Y
IC2502 pin 6 C
B
IC2502 pin 2 C
R
YES
NO
Is voltage of 5V supplied to IC2502 pins 1, 5, 14 and 16?
Is IC2502 pin 3 "H" level?
Check STNDBY_5V line.
Is each video signal output to each pin of
IC2502?
IC2502 pin 15 R_OUT
IC2502 pin 13 G_OUT
IC2502 pin 10 B_OUT
NO
YES
Check or replace
IC2502.
YES
Is
T_V_MUTE line "L" level?
NO
NO
Check S OUT
(H)
line.
Check or replace IC2681.
YES
Is voltage of 5V supplied to IC2681 pin 3?
YES
Check STNDBY
5V line.
NO
Is IC2681 pin 1 "L" level?
YES
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