DOWNLOAD Sharp DV-HR300H (serv.man8) Service Manual ↓ Size: 84.04 KB | Pages: 13 in PDF or view online for FREE

Model
DV-HR300H (serv.man8)
Pages
13
Size
84.04 KB
Type
PDF
Document
Service Manual
Brand
Device
DVD / Trouble shooting
File
dv-hr300h-sm8.pdf
Date
PREV: Sharp DV-HR300H (serv.man7) Service Manual

Sharp DV-HR300H (serv.man8) Service Manual ▷ View online

14
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
FLOW CHART No.2
Drive is not working properly (communication failure with IC7506).
Is 
A
T
API reset released? (CN4501 pin 1 R4537: "H" level)
NO
Check IC7506 and peripheral 
circuits.
YES
YES
Check following items.
NO
Check power unit and PC_12V 
and PC_5V circuits.
Communicating with drive via 
A
T
API?
Access drive when CN4501 pin 37 CS0 and pin 38 CS1 are at "L" 
level. (Communication is ongoing if intermittently set at LOW
.)
CN4501 pin 35 DA0, pin 33 DA1, pin 36 DA2 and 
A
T
API register 
address (Intermittently set at LOW).
CN4501 pin 31 INTRQ is at "H" level when drive interrupts. Output 
after processing transfer command from IC7506, etc.
CN4501 pin 21 DMARQ is at "L" level when drive requests data 
transfer
.
CN4501 pin 29 DMACK is at "L" level when IC7506 receives data 
transfer for DMARQ from drive.
When CN4501 pin 25 DIOR and pin 23 DIOW are at "L" level, 
IC7506 sends READS/WRITE to drive. (Communication is ongoing 
if CS and DA
 are intermittently set at LOW
.)
Are 12V and 5V applied to drive?
FLOW CHART No.3
HDD is not working properly (communication failure with IC7506).
Is 
A
T
API reset released? (CN4502 pin 40 R4566: "H" level)
NO
Check IC7506 and peripheral 
circuits.
YES
YES
Check following items.
NO
Check power unit and PC_12V 
and PC_5V circuits.
Communicating with drive via 
A
T
API?
Access drive when CN4502 pin 4 CS0 and pin 3 CS1 are at "L" 
level. (Communication is ongoing if intermittently set at LOW
.)
CN4502 pin 6 DA0, pin 8 DA1, pin 5 DA2 and 
A
T
API register 
address (intermittently set at LOW).
CN4502 pin 10 INTRQ is at "H" level when drive interrupts. Output 
after processing transfer command from IC7506, etc.
CN4502 pin 20 DMARQ is at "L" level when drive requests data 
transfer
.
CN4502 pin 12 DMACK is at "L" level when IC7506 receives data 
transfer for DMARQ from drive.
When CN4502 pin 16 DIOR and pin 18 DIOW are at "L" level, 
IC7506 sends READS/WRITE to drive. (Communication is ongoing 
if CS and DA
 are intermittently set at LOW
.)
Are 12V and 5V applied to HDD?
Is MPEG2_PS data signal properly connected between pins of 
IC7304 and IC4501?
IC7304 pin 66 
→
 IC4501 pin 138 OSSTB (stream data strobe)
IC7304 pins 56-59, 61, 63-65 
→
 IC4501 pins 3-7, 10-12 
                                                                 OS [7:0] (stream data)
IC7304 pin 70 
←
 IC4501 pin 141 OSREQ ("L" level when
                                                    IC4501 requests data transfer
.)
IC7304 pin 68 
→
 IC4501 pin 13 OSVLD (stream data valid)
IC7304 pin 67 
→
 IC4501 pin 19 OSSYNC (stream data sync)
FLOW CHART No.4
Recording is impossible (MPEG stream check)
NO
Check IC7304, IC4501 and peripheral 
circuits as well as lines between pins of 
IC7304 and IC4501.
YES
NO
Check IC4501, IC7506 and peripheral 
circuits as well as lines between pins of 
IC4501 and IC7506.
Is MPEG2_PS data signal properly connected between pins of 
IC4501 and IC7506?
IC4501 pin 18 
←
 IC7506 pin 208 SBCLK (transfer clock 27MHz)
IC4501 pin 23 
→
 IC7506 pin 240 SBDA
T
 (stream data)
IC4501 pin 22 
→
 IC7506 pin 234 SBV
ALID ("H" level when
                                                             transferred data is valid)
IC4501 pin 21 
←
 IC7506 pin 213 SBREQ ("H" level when
                                                   IC7506 requests data transfer)
IC4501 pin 20 
→
 IC7506 pin 239 SBSOS (sector head signal)
15
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
Y/C/C
B
/C
R
 output
Is video signal output to each pin of IC7506?
IC7506 pin 218 (R7743) 
Y
 OUT
 (Q7506 pin 5 B)
IC7506 pin 214 (R7744) C OUT
 (Q7505 pin 5 B)
IC7506 pin 245 (R7724) C
B
 (B_U) OUT
 (Q7503 B)
IC7506 pin 224 (R7737) C
R
 (R_V) OUT
 (Q7502 B)
FLOW CHART No.5
Playback video signal is not output from main PWB.
Is drive control of IC7506 working properly?
Is HDD control working properly?
YES
Check lines between pins of IC7506 and CN3001 as well as 
circuits on lines.
IC7506 pin 218 (R7743) 
→
 Q7506 
→
 Q7509 (FL7501 
→
 
Q7508 in LP
 mode) 
→
 IC7512 
→ 
Q7510 
→
 CN3001 pin 23 154_Y
IC7506 pin 214 pin (R7744) 
→
 Q7505 
→
 CN3001 pin 25 154_C
IC7506 pin 245 pin (R7724) 
→
 Q7503 
→
 CN3001 pin 19 154_B/U
IC7506 pin 224 pin (R7737) 
→
 Q7502 
→
 CN3001 pin 20 154_R/V
NO
NO
Refer to Flow chart No.2 "Drive is not working 
properly (communication failure with IC7506)" 
or Flow chart No.3 "HDD is not working 
properly (communication failure with IC7506)".
Check IC7506 and peripheral circuits.
YES
Y/P
B
/P
R
 output (progressive mode)
Is video signal output to each pin of IC7506?
IC7506 pin 223 (R7738) 
Y
 (G_Y) OUT
 (Q7501 B)
IC7506 pin 245 (R7724) P
B
 (B_U) OUT
 (Q7503 B) 
IC7506 pin 224 (R7737) P
R
 (R_V) OUT
 (Q7502 B)
NO
YES
Check IC7506 and peripheral circuits.
Check lines between pins of IC7506 and CN3001 as well as 
circuits on lines.
IC7506 pin 223 pin (R7738) 
→
 Q7501 
→
 CN3001 pin 18 154_G/Y
IC7506 pin 245 pin (R7724) 
→
 Q7503 
→
 CN3001 pin 19 154_B/U
IC7506 pin 224 pin (R7737) 
→
 Q7502 
→
 CN3001 pin 20 154_R/V
Is video signal output to pins of main unit connector CN3001?
CN3001 pin 23 154_Y
CN3001 pin 25 157_C
FLOW CHART No.6
Playback images do not appear properly (from video/S output).
NO
Refer to Flow chart No.5 "Playback video 
signal is not output from main PWB".
Check circuits and lines between pins of 
main unit connector CN3001 and input pins 
of IC2802.
CN3001 pin 23 
→
 S2202 pin 23 
→
 Q2502, 
2504, 2507 
→
 IC2802 pin 2 OSD_Y_IN
CN3001 pin 25 
→
 S2202 pin 25 
→
 Q2501, 
2503 
→
 IC2802 pin 4 OSD_C_IN
YES
NO
Check  line from IC2501 pin 21 to S-OUTY
 
terminal (J2601).
Check IC2501 pin 23 
→
 IC2601 pin 7 (IN) 
and output waveform of IC2601 pin 25.
Is video signal input to each pin of sub unit IC2802?
IC2802 pin 2 OSD_Y_IN
IC2802 pin 4 OSD_C_IN
YES
NO
Is 5V applied to IC2501 pins 1, and 28?
Is 5V applied to IC2802 pin 7?
Is IC2501 pin 3 at "H" level?
STNDBY_5V line
Check PC_5V (1) 
line.
NO
NO
Is video signal output to each pin of IC2802?
IC2802 pin 8 OSD_Y
IC2802 pin 6 OSD_C
YES
Is video signal input to each pin of IC2501?
IC2501 pin 6 OSD_Y
IC2501 pin 2 OSD_C
YES
Is video signal output to each pin of IC2501?
IC2501 pin 21 
Y_OUT
IC2501 pin 26 C_OUT
IC2501 pin 23 V_OUT
Check lines between pins of IC2802 and 
IC2501.
IC2802 pin 8 
→
 IC2501 pin 6 OSD_Y
IC2802 pin 6 
→
 IC2501 pin 2 OSD_C
YES
NO
NO
NO
Is video signal output to each output terminal?
Are 
Y
 and C signals output to S-OUT
 terminal (SC2603)?
Is video signal output to V
ideo-OUT
 terminal (JC2601)?
Is video/Y
 signal output to SCAR
T
 L1 terminal?
NO
YES
ICheck or replace 
IC2501.
YES
Check or replace 
IC2802.
YES
YES
Is T_V_MUTE 
line 
at "L" level?
NO
Is voltage of 12V supplied to pin 14 of 
IC2601 and 5V to pin 24?
Check or replace 
IC2601.
YES
Check 12V line and 
periphery of IC2691. 
5V 
→
 STNDBY
. 
Check 5V line.
NO
NO
Check Q2510 and 
R2515.
Check T_V_MUTE 
line.
NO
Check input waveform of IC2682 pins 4 and 6 and output of pin 2.
IC2501 pin 21 
→
 IC2682 pin 4 
Y
 OUT
IC2682 pin 6 
→
 IC2601 pin 25
IC2682 pin 2 output. When pin 1 is "H": Pin 4 input signal.
       "L": Pin 6 input signal is output.
Is voltage of 5V supplied to IC2682 pin 3?
Check or replace IC2682.
YES
Check STNDBY
 5V line.
NO
16
DV-HR300S/HR350S
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
17
DV-HR300S/HR350S
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.8
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_PB_IN
IC2801 pin 14 OSD_PR_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, IC2801 and 2803 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
IC2502 pin 3 C
R
NO
YES
Check or replace 
IC2503.
YES
Check DVD (H) line.
NO
2
2
YES
Check line from IC2505 pin 15 to IC2681 pin 6.
Check IC2681 pin 2 output.
Check line from IC2505 pin 12 to SCAR
T
 L1 terminal (SC2601)
and SCAR
T
 L1 terminal (SC2601).
Check line from IC2505 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 IC2505.
IC2503 pin 6 
→
 IC2505 pin 4 COM_Y
IC2503 pin 5 
→
 IC2505 pin 6 CB
IC2503 pin 3 
→
 IC2505 pin 2 CR
Is each video signal input to each pin of 
IC2505?
IC2505 pin 4 COM_Y
IC2505 pin 6 C
B
IC2505 pin 2 C
R
YES
NO
Is voltage of 5V supplied to IC2505 pins 1, 5, 14 and 16?
Is IC2505 pin 3 "H" level?
STNDBY_5V line.
Is each video signal output to to each pin of 
IC2505?
IC2505 pin 15 R_OUT
IC2505 pin 12 G_OUT
IC2505 pin 10 B_OUT
NO
YES
Check or replace 
IC2505.
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
Page of 13
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Sharp DV-HR300H (serv.man8) Service Manual ▷ Download

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  • Here you can View online or download the Service Manual for the Sharp DV-HR300H (serv.man8) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp DV-HR300H (serv.man8) DVD. Information contained in Sharp DV-HR300H (serv.man8) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.

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