Sony DVP-FX730 / DVP-FX735 Service Manual ▷ View online
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DVP-FX721/FX730/FX735
SAFETY CHECK-OUT
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers' instructions to use these
instruments.
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of a
passive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
is 0.75V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of a
passive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
1. Check the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder splashes
and bridges.
and bridges.
2. Check the interboard wiring to ensure that no wires are “pinched”
or contact high-wattage resistors.
3. Look for unauthorized replacement parts, particularly transistors,
that were installed during a previous repair. Point them out to
the customer and recommend their replacement.
the customer and recommend their replacement.
4. Look for parts which, though functioning, show obvious signs
of deterioration. Point them out to the customer and recommend
their replacement.
their replacement.
5. Check the line cord for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
6. Check the B+ voltage to see it is at the values specified.
7. Check the antenna terminals, metal trim, “metallized” knobs,
7. Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage. Check
leakage as described below.
leakage as described below.
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
safety checks before releasing the set to the customer:
1.5 k
Ω
0.15
μF
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
Unleaded solder
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than
• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
CAUTION:
The use of optical instrument with this product will increase eye
hazard.
The use of optical instrument with this product will increase eye
hazard.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radia-
tion exposure.
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radia-
tion exposure.
WARNING!!
WHEN SERVICING, DO NOT APPROACH THE LASER
EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS
NECESSARY TO CONFIRM LASER BEAM EMISSION,
BE SURE TO OBSERVE FROM A DISTANCE OF MORE
THAN 25 cm FROM THE SURFACE OF THE OBJEC-
TIVE LENS ON THE OPTICAL PICK-UP BLOCK.
EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS
NECESSARY TO CONFIRM LASER BEAM EMISSION,
BE SURE TO OBSERVE FROM A DISTANCE OF MORE
THAN 25 cm FROM THE SURFACE OF THE OBJEC-
TIVE LENS ON THE OPTICAL PICK-UP BLOCK.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK OR DOTTED LINE
WITH MARK ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. RE-
PLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
WITH MARK ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. RE-
PLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉ-
MENTS PUBLIÉS PAR SONY.
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉ-
MENTS PUBLIÉS PAR SONY.
This label is located on the
bottom of the unit.
bottom of the unit.
This appliance is classified as a
CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT
MARKING is located on the
bottom of the unit.
CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT
MARKING is located on the
bottom of the unit.
– 3 –
DVP-FX721/FX730/FX735
TABLE OF CONTENTS
Section
Title
Page
Section
Title
Page
1.
DISASSEMBLY
1-1. Disassembly Flow ........................................................ 1-1
1-2. Top Cover Block ........................................................... 1-1
1-3. LCD Panel Block .......................................................... 1-2
1-4. LCD .............................................................................. 1-2
1-5. Travers Unit .................................................................. 1-3
1-6. MAIN Board .................................................................. 1-3
1-7. Installation of Travers ................................................... 1-4
1-8. Circuit Boards Location ................................................ 1-4
2.
BLOCK DIAGRAM
2-1. Overall Block Diagram.................................................. 2-1
3.
SCHEMATIC DIAGRAMS
3-1. Frame Schematic Diagram........................................... 3-1
3-2. MAIN Board (1/6) (DC-DC POWER) ............................ 3-2
3-3. MAIN Board (2/6) (MCU & KEY) .................................. 3-3
3-4. MAIN Board (3/6) (DVD SERVO & MT1389LP) ........... 3-4
3-5. MAIN Board (4/6) (SDRAM & S-FLASH ROM) ............ 3-5
3-6. MAIN Board (5/6) (AUDIO OUT/VIDEO OUT) ............. 3-6
3-7. MAIN Board (6/6) (USB & PANEL CONNECTOR) ....... 3-7
3-8. LCD Board (T_CON) .................................................... 3-8
3-9. KEY Board (KEY & HALL SW) ..................................... 3-9
4.
PRINTED WIRING BOARDS
4-1. MAIN Board (SIDE A) ................................................... 4-1
4-2. MAIN Board (SIDE B)................................................... 4-2
4-3. LCD Board.................................................................... 4-3
4-4. KEY Board .................................................................... 4-4
5.
WAVEFORMS AND CIRCUIT VOLTAGE
5-1. Waveforms ................................................................... 5-1
5-2. Circuit Voltage Chart .................................................... 5-3
6.
IC PIN FUNCTION DESCRIPTION
6-1. MPEG/DSP/RF PIN Functiom
(MAIN Board U4: MT1389LP) ...................................... 6-1
6-2. FRONT MICON PIN Function
(MAIN Board U14: Z8F0823) ....................................... 6-4
7.
ELECTRICAL ADJUSTMENT
7-1. Standard Video Level ................................................... 7-1
8.
TROUBLESHOOTING
8-1. Electrical Trouble Shooting Guide ............................... 8-1
8-2. LCD Trouble Shooting Guide ....................................... 8-6
9.
REPAIR PARTS LIST
9-1. EXPLODED VIEWS ..................................................... 9-1
9-1-1. Top Cover Block ...................................................... 9-1
9-1-2. Bottom Block ........................................................... 9-2
9-1-3. LCD Panel Block ..................................................... 9-3
9-2. Electrical Parts List ....................................................... 9-4
1-1
DVP-FX721/FX730/FX735
SECTION 1
DISASSEMBLY
• This set can be disassembled in the order shown below.
1-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
1-2. TOP COVER BLOCK
1-2. TOP COVER BLOCK
(Page 1-1)
1-3. LCD PANEL BLOCK
(Page 1-2)
1-4. LCD
(Page 1-2)
1-5. TRAVERS UNIT
(Page 1-3)
1-6. MAIN BOARD
(Page 1-3)
SET
6
screw (TS2 × 7)
7
two screws (TS2 × 7)
5
open preve sheet
4
four screws (TS2 × 7)
1
two foot rubbers
2
two screws (TS2 × 7)
3
four screw pads
0
top cover block
8
three screws (TS2 × 7)
9
KEY board harness
1-2
DVP-FX721/FX730/FX735
4
two screws
(M2.5 × 12)
5
LCD panel block
3
LCD harness
2
LCD harness
1
himeron tape
4
two panel rubbers
0
LCD flexible board
qs
LCD bracket L
6
two panel rubbers
8
housing cover assy
7
two screws (TS1.7 × 5)
9
back light harness
qd
two screws
(TS1.7 × 4)
qa
six screws
(TS1.7 × 4)
5
two screws (TS1.7 × 5)
1
hinge cover
qf
LCD bracket S
2
dummy hinge assy
3
two screws
(TS1.7 × 5)
qg
two screws
(TS1.7 × 4)
qj
LCD
qh
LCD bracket S
1-3. LCD PANEL BLOCK
1-4. LCD