Sharp DV-HR300H Service Manual ▷ View online
10
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
DV-HR300H
DV-HR300X
(8) Removing the tuner PWB, power PWB and sub PWB
1. Remove tuner PWB upward.
2. Disconnect the connection cables from the power PWB and sub
PWB.
3. Remove five screws
r
.
4. Remove the power PWB upward.
5. Remove two screws
t
.
6. Remove the sub PWB upward.
7. Remove two hooks and the PWB holder in the direction of the
arrow.
8. Remove one insulation sheet, three gasket and spacer.
9. Remove four hooks aand the holder in the direction of the allow.
(7) Removing the rear terminal board and fan
1. Detach the fan cable from the main unit.
2. Remove two screws
0
.
3. Detach the fan and fan cover.
4. Remove one screw
q
, one screw (tuner)
w
and nine screws
e
(terminals)
5. Pull the rear terminal board backward to remove.
9
10
11
12
13
14
15
(6) Removing the DVD unit
1. Remove four screws
9
.
2. Remove the DVD unit (with the angle) upward.
3. Disconnect cables including the flat cable and power cable.
4. Remove the gasket.
11
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
DV-HR300H
DV-HR300X
Parts Code
Price Code
Parts name / Use
1
QCNW-C072WJZZ
AD
Main to Sub Signal Line CN3001—S2202
2
QCNW-C073WJZZ
AD
Main to Sub Control Line CN3003
↔
S2201
3
QCNW-C074WJZZ
AT
Main to Power CN3004
↔
P9005
4
QCNW-B712WJZZ
AH
ATAPI cable for HDD CN4502
↔
ATAPi
Extension with QCNW-C072WJZZ
Extension with
QCNW-C073WJZZ
QCNW-C073WJZZ
Extension with
QCNW-B712WJZZ
QCNW-B712WJZZ
Extension with
QCNW-C074WJZZ
QCNW-C074WJZZ
Main PWB
HDD Unit
DVD RW Unit
Sub PWB
POWER Unit
Development for repair
2
3
4
1
5-2. EXTENSION CABLE DIAGRAM
25pin
21pin
12pin
12pin
1
2
3
40pin
4
12
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
DV-HR300H
DV-HR300X
5-3. Notes for servicing
1. After replacing the HDD or main PWB, register the HDD-ID again.
2. After replacing I54R NOR flash (IC7502) or NAND flash (IC7509), upgrade the version using the CD.
All the data in the HDD will be formatted by replacing the main PWB unit.
The following parts cannot be replaced as the system information needs to be written. (Replace the PWB.)
1. EEPROM for I54R, IC7507 and IC7508
Setting procedure after replacement of HDD or main PWB
1) HDD installation
The unit can be started after installing the HDD, but key operation is impossible since the HDD-ID is not registered.
Perform HDD aging to register the HDD-ID.
2) HDD aging
The test mode can be accessed after replacing the HDD.
[1] Enter the test mode with the keys on the main unit (press the channel UP key and recording stop key simulta-
neously).
[2] Enter “4” to open the drive screen.
[3] Press the play key to enter the HDD aging mode.
“0” appears on the LCD of the front panel. It increases to 58 and then changes to “777” when the aging is
completed.
Should “EEE” appear, replace the HDD and start the process over. Aging takes approx. 2.5 hours.
[4] The aging is completed when “777” appears, and the HDD-ID is registered automatically.
If the main PWB unit is replaced, enter the test mode and press the “10/0” key on the remote control to register
the HDD-ID.
[5] Restart the unit and check the operation.
3) Factory setting
Initialize all the settings. Enter the test mode and press the “11” key on the remote control. The display stays black
during the initialization process.
Initialization is completed when the test mode appears on the LCD display following “507”.
5-4. Writing of software
1. Press the power key to turn on the power.
2. Open the tray with the tray open/close key and place the version upgrade CD.
3. Close the tray. Upgrade begins automatically.
“200” appears on the main unit display.
4. When the upgrade finishes, the tray opens and “208” appears on the main unit display.
5. Turn off the power to complete the upgrade.
• Upgrade the writer in the same way. In this case, “300” and “307” appear on the main unit display during the process.
13
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
DV-HR300H
DV-HR300X
Shifter
Shifter
Jig (thin board)
(B)
6
5
4
(C)
3
5
2
1
(A)
•
Precautions when replacing the traverse mechanism
1) Do not touch the pickup
1) Do not touch the pickup
1
, guide shaft
2
, spindle motor
3
, thread motor
4
, adjusting screw
5
and follower
6
.
2) Wear an earth band during the replacement.
3) Keep the traverse mechanism away from dust or dirt.
3) Keep the traverse mechanism away from dust or dirt.
Pay special attention to objective lens (A) of pickup
1
, lead screw (B) of thread motor
4
and rubber surface (C) of
spindle motor
3
.
•
Notes when inserting the tray
1) Before inserting the tray, set the shifter to the rightmost position with the unit straight in front. If the shifter is not set
1) Before inserting the tray, set the shifter to the rightmost position with the unit straight in front. If the shifter is not set
properly, malfunction may result or the tray may get stuck inside.
2) The shifter works with the convex part of the (a) section located in the lower part of the unit. (See page 9 of the
service manual.)
•
Removing the tray
1) Pull out the tray to the end of the stroke.
2) Insert the jigs from left and right sides of the tray at the same time.
3) Remove the tray with the jigs.
1) Pull out the tray to the end of the stroke.
2) Insert the jigs from left and right sides of the tray at the same time.
3) Remove the tray with the jigs.
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