Text preview for : DVD900 Service.pdf part of Denon DVD900 Service manual for DVD 900 Denon
Back to : DVD900 Service.part1.rar | Home
For Europe model
SERVICE MANUAL
MODEL DVD-900
DVD VIDEO PLAYER
Some illustrations using in this service manual are slightly different from the actual set.
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
Telephone: 03 (3837) 5321
X0156-2 NC 0209
TABLE OF CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
LASER BEAM SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
STANDARD NOTES FOR SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CABINET DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
BLOCK DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
FIRMWARE RENEWAL MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
LEAD IDENTIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Manufactured under license from Dolby Laboratories. "Dolby"
and the double-D symbol are trademarks of Dolby Laboratories.
"DTS" and "DTS Digital Out" are trademarks of Digital Theater Systems Inc.
SPECIFICATIONS
ITEM CONDITIONS UNIT NOMINAL LIMIT
1. Video Output 75 ohm load Vpp 1.0
2. Optical Digital Out dBm -18
3. Audio (PCM)
3-1. Output Level 1kHz 0dB Vrms 2.0
3-2. S/N dB 110
3-3. Freq. Response
DVD fs=48kHz 20~22kHz dB ±2
CD fs=44.1kHz 20~20 kHz dB ±2
3-4. THD+N 1 kHz 0dB % 0.005
NOTES:
1. All Items are measured without pre-emphasis unless otherwise specified.
2. Power supply : AC220 240 V 50 Hz
3. Load imp. : 100 K ohm
4. Room ambient : +25 °C
-3-
LASER BEAM SAFETY PRECAUTIONS
This DVD player uses a pickup that emits a laser beam.
Do not look directly at the laser beam coming
from the pickup or allow it to strike against
your skin.
The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep
your eyes at least 30cm away from the pickup lens when the diode is turned on. Do not look directly at the laser
beam.
Caution: Use of controls and adjustments, or doing procedures other than those specified herein, may result in
hazardous radiation exposure.
Drive Mecha Assembly
Laser Beam Radiation
Laser Pickup
Turntable
CAUTION - VISIBLE LASER
RADIATION WHEN OPEN AND
INTERLOCK DEFEATED.
AVOID EXPOSURE TO BEAM.
Location: Inside Top of DVD mechanism.
-4-
IMPORTANT SAFETY PRECAUTIONS
Product Safety Notice I. Also check areas surrounding repaired locations.
J. Be careful that foreign objects (screws, solder
Some electrical and mechanical parts have special droplets, etc.) do not remain inside the set.
safety-related characteristics which are often not evi-
dent from visual inspection, nor can the protection K. Crimp type wire connector
they give necessarily be obtained by replacing them The power transformer uses crimp type connectors
with components rated for higher voltage, wattage, which connect the power cord and the primary side
etc. Parts that have special safety characteristics are of the transformer. When replacing the transformer,
identified by a ! on schematics and in parts lists. Use follow these steps carefully and precisely to pre-
of a substitute replacement that does not have the vent shock hazards.
same safety characteristics as the recommended Replacement procedure
replacement part might create shock, fire, and/or other 1)Remove the old connector by cutting the wires at a
hazards. The Product's Safety is under review contin- point close to the connector.
uously and new instructions are issued whenever Important: Do not re-use a connector. (Discard it.)
appropriate. Prior to shipment from the factory, our 2)Strip about 15 mm of the insulation from the ends
products are carefully inspected to confirm with the of the wires. If the wires are stranded, twist the
recognized product safety and electrical codes of the strands to avoid frayed conductors.
countries in which they are to be sold. However, in
3)Align the lengths of the wires to be connected.
order to maintain such compliance, it is equally impor-
Insert the wires fully into the connector.
tant to implement the following precautions when a set
is being serviced. 4)Use a crimping tool to crimp the metal sleeve at its
center. Be sure to crimp fully to the complete clo-
Precautions during Servicing sure of the tool.
L. When connecting or disconnecting the internal con-
A. Parts identified by the ! symbol are critical for nectors, first, disconnect the AC plug from the AC
safety. Replace only with part number specified. outlet.
B. In addition to safety, other parts and assemblies
are specified for conformance with regulations
applying to spurious radiation. These must also be
replaced only with specified replacements.
Examples: RF converters, RF cables, noise block-
ing capacitors, and noise blocking filters, etc.
C. Use specified internal wiring. Note especially:
1)Wires covered with PVC tubing
2)Double insulated wires
3)High voltage leads
D. Use specified insulating materials for hazardous
live parts. Note especially:
1)Insulation tape
2)PVC tubing
3)Spacers
4)Insulators for transistors
E. When replacing AC primary side components
(transformers, power cord, etc.), wrap ends of
wires securely about the terminals before solder-
ing.
F. Observe that the wires do not contact heat produc-
ing parts (heatsinks, oxide metal film resistors, fus-
ible resistors, etc.).
G. Check that replaced wires do not contact sharp
edges or pointed parts.
H. When a power cord has been replaced, check that
5 - 6 kg of force in any direction will not loosen it.
-5-
Safety Check after Servicing
Examine the area surrounding the repaired location for
damage or deterioration. Observe that screws, parts,
and wires have been returned to their original posi- Chassis or Secondary Conductor
tions. Afterwards, do the following tests and confirm
the specified values to verify compliance with safety Primary Circuit Terminals
standards.
d' d
1. Clearance Distance
When replacing primary circuit components, confirm
specified clearance distance (d) and (d') between sol-
dered terminals, and between terminals and surround-
ing metallic parts. (See Fig. 1)
Table 1 : Ratings for selected area
AC Line Voltage Clearance Distance (d) (d')
3mm(d) Fig. 1
230 V
6 mm(d')
Note: This table is unofficial and for reference only.
Be sure to confirm the precise values.
Exposed Accessible Part
2. Leakage Current Test
Confirm the specified (or lower) leakage current
between B (earth ground, power cord plug prongs)
and externally exposed accessible parts (RF termi-
nals, antenna terminals, video and audio input and AC Voltmeter
output terminals, microphone jacks, earphone jacks, Z (High Impedance)
etc.) is lower than or equal to the specified value in the
table below.
Measuring Method (Power ON) :
Insert load Z between B (earth ground, power cord
plug prongs) and exposed accessible parts. Use an B
One side of
AC voltmeter to measure across the terminals of load Power Cord Plug Prongs
Z. See Fig. 2 and the following table.
Fig. 2
Table 2: Leakage current ratings for selected areas
One side of power cord plug
AC Line Voltage Load Z Leakage Current (i)
prongs (B) to:
2k RES.
i0.7mA AC Peak RF or
Connected in
i2mA DC Antenna terminals
parallel
230 V
50k RES.
i0.7mA AC Peak
Connected in A/V Input, Output
i2mA DC
parallel
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
-6-
STANDARD NOTES FOR SERVICING
Circuit Board Indications How to Remove / Install Flat Pack-IC
a. The output pin of the 3 pin Regulator ICs is indi- 1. Removal
cated as shown.
With Hot-Air Flat Pack-IC Desoldering Machine:.
(1) Prepare the hot-air flat pack-IC desoldering
Top View Bottom View
machine, then apply hot air to the Flat Pack-IC
Input (about 5 to 6 seconds). (Fig. S-1-1)
Out In
b. For other ICs, pin 1 and every fifth pin are indicated
as shown.
5
Pin 1
Fig. S-1-1
10
(2) Remove the flat pack-IC with tweezers while apply-
c. The 1st pin of every male connector is indicated as ing the hot air.
shown. (3) Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
Pin 1 up. Then remove (glue will be melted). (Fig. S-1-6)
(1) Release the flat pack-IC from the CBA using twee-
zers. (Fig. S-1-6)
Caution:
Instructions for Connectors 1. Do not supply hot air to the chip parts around the
1. When you connect or disconnect the FFC (Flexible flat pack-IC for over 6 seconds because damage to
Foil Connector) cable, be sure to first disconnect the chip parts may occur. Put masking tape around
the AC cord. the flat pack-IC to protect other parts from damage.
(Fig. S-1-2)
2. FFC (Flexible Foil Connector) cable should be
inserted parallel into the connector, not at an angle. 2. The flat pack-IC on the CBA is affixed with glue, so
be careful not to break or damage the foil of each
pin or the solder lands under the IC when removing
it.
FFC Cable
Hot-air
Flat Pack-IC
Desoldering
Machine
Connector CBA
CBA
* Be careful to avoid a short circuit.
Masking Flat Pack-IC
Tape
Tweezers
Fig. S-1-2
-7-
With Soldering Iron: (4) Bottom of the flat pack-IC is fixed with glue to the
(1) Using desoldering braid, remove the solder from all CBA; when removing entire flat pack-IC, first apply
pins of the flat pack-IC. When you use solder flux soldering iron to center of the flat pack-IC and heat
which is applied to all pins of the flat pack-IC, you up. Then remove (glue will be melted). (Fig. S-1-6)
can remove it easily. (Fig. S-1-3) (5) Release the flat pack-IC from the CBA using twee-
zers. (Fig. S-1-6)
Flat Pack-IC Desoldering Braid Note:
When using a soldering iron, care must be taken
to ensure that the flat pack-IC is not being held by
glue. When the flat pack-IC is removed from the
CBA, handle it gently because it may be damaged
if force is applied.
Soldering Iron Hot Air Blower
Fig. S-1-3
(2) Lift each lead of the flat pack-IC upward one by or
one, using a sharp pin or wire to which solder will
not adhere (iron wire). When heating the pins, use
a fine tip soldering iron or a hot air desoldering Iron Wire
machine. (Fig. S-1-4)
Soldering Iron
To Solid
Mounting Point
Fig. S-1-5
Sharp
Pin
Fine Tip Fine Tip
Soldering Iron CBA Soldering Iron
Fig. S-1-4
(3) Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
Flat Pack-IC
(4) Release the flat pack-IC from the CBA using twee-
zers. (Fig. S-1-6) Tweezers
With Iron Wire:
(1) Using desoldering braid, remove the solder from all Fig. S-1-6
pins of the flat pack-IC. When you use solder flux
which is applied to all pins of the flat pack-IC, you
can remove it easily. (Fig. S-1-3)
(2) Affix the wire to a workbench or solid mounting
point, as shown in Fig. S-1-5.
(3) While heating the pins using a fine tip soldering
iron or hot air blower, pull up the wire as the solder
melts so as to lift the IC leads from the CBA contact
pads as shown in Fig. S-1-5
-8-
2. Installation Instructions for Handling
(1) Using desoldering braid, remove the solder from Semi-conductors
the foil of each pin of the flat pack-IC on the CBA
Electrostatic breakdown of the semi-conductors may
so you can install a replacement flat pack-IC more
occur due to a potential difference caused by electro-
easily.
static charge during unpacking or repair work.
(2) The "I" mark on the flat pack-IC indicates pin 1.
(See Fig. S-1-7.) Be sure this mark matches the 1 1. Ground for Human Body
on the PCB when positioning for installation. Then Be sure to wear a grounding band (1M) that is prop-
presolder the four corners of the flat pack-IC. (See erly grounded to remove any static electricity that may
Fig. S-1-8.) be charged on the body.
(3) Solder all pins of the flat pack-IC. Be sure that none
of the pins have solder bridges.
2. Ground for Workbench
(4) Be sure to place a conductive sheet or copper plate
Example : with proper grounding (1M) on the workbench or
other surface, where the semi-conductors are to be
placed. Because the static electricity charge on
clothing will not escape through the body ground-
ing band, be careful to avoid contacting semi-con-
ductors with your clothing.
< Incorrect >
Pin 1 of the Flat Pack-IC
is indicated by a " " mark.
Fig. S-1-7
Presolder
CBA
Flat Pack-IC
CBA
Fig. S-1-8 < Correct >
Grounding Band
1M
CBA
1M
Conductive Sheet or
Copper Plate
-9-
CABINET DISASSEMBLY INSTRUCTIONS
1. Disassembly Flowchart (1): Identification (location) No. of parts in the figures
(2): Name of the part
This flowchart indicates the disassembly steps to gain (3): Figure Number for reference
access to item(s) to be serviced. When reassembling,
(4): Identification of parts to be removed, unhooked,
follow the steps in reverse order. Bend, route, and
unlocked, released, unplugged, unclamped, or
dress the cables as they were originally.
desoldered.
P=Spring, L=Locking Tab, S=Screw,
[1] Top Cover
CN=Connector
*=Unhook, Unlock, Release, Unplug, or Desolder
[2] Front Assembly [3] Function CBA
e.g. 2(S-2) = two Screws (S-2),
2(L-2) = two Locking Tabs (L-2)
[4] DVD Mecha
(5): Refer to "Reference Notes."
[5] Switch CBA
Reference Notes
[7] DVD Main CBA Unit CAUTION 1: Locking Tabs (L-1), (L-2) and (L-3) are
[6] AV CBA fragile. Be careful not to break them.
1-1. Connect the wall plug to an AC outlet and press
the OPEN/CLOSE button to open the tray.
[8] Rear Panel
1-2. Remove the Tray Panel by releasing two Locking
Tabs (L-1).
1-3. Press the OPEN/CLOSE button again to close
2. Disassembly Method the tray.
1-4. Press the POWER button to turn the power off.
REMOVAL
ID/ 1-5. Unplug an AC cord.
LOC. PART REMOVE/*UNHOOK/
Fig. 1-6. Release two Locking Tabs (L-2). Then, release
No. UNLOCK/RELEASE/ Note
No. five Locking Tabs (L-3) (to do this, first release
UNPLUG/DESOLDER
two Locking Tabs (A) at the side, and then three
[1] Top Cover D1 5(S-1) -
Locking Tabs (B) at the bottom.)
1-1
1-2 CAUTION 2: Electrostatic breakdown of the laser
*2(L-1), Tray Panel, diode in the optical system block may occur as a
Front 1-3
[2] D2 *2(L-2), *CN2002, potential difference caused by electrostatic charge
Assembly 1-4
*5(L-3) 1-5 accumulated on cloth, human body etc, during
1-6 unpacking or repair work.
6(S-2), To avoid damage of pickup follow next procedures.
[3] Function CBA D3 -
Insulation Sheet 2-1. Slide out the pickup unit as shown in Fig. D5.
2
2-2. Short the three short lands of FPC cable with sol-
2-1
D4, 3(S-3), *CN101, der before removing the FFC cable (CN101) from
[4] DVD Mecha 2-2
D5 *CN401 2-3 it. If you disconnect the FFC cable (CN101), the
3 laser diode of pickup will be destroyed. (Fig. D5)
(S-4), *2(L-4), Desol- 2-3. Disconnect Connector (CN401). Remove three
[5] Switch CBA D6 - Screws (S-3) and lift the DVD Mecha. (Fig. D4)
der
[6] AV CBA D6 5(S-5), 3(S-6) - CAUTION 3: When reassembling, confirm the FFC
DVD Main 3(S-7), *CN1001, cable (CN101) is connected completely. Then remove
[7] D6 - the solder from the three short lands of FPC cable.
CBA Unit *CN1601
(Fig. D5)
[8] Rear Panel D7 3(S-8) -
(1) (2) (3) (4) (5)
- 10 -
(S-1) (S-3)
[1] Top Cover (S-3)
(S-1)
[4] DVD Mecha
CN401
(S-1)
Fig. D1
CN101
Fig. D4
Tray Panel
(L-2)
A
(L-1)
CN2002
(L-1)
(A)
DVD Mecha
B
[2] Front Assembly
(B) Short the three short lands by soldering
(L-3) (A)
Fig. D2
(S-2) Insulation Sheet
(S-2)
[3] Function CBA
View for A
OR
Short the three short
lands by soldering
Fig. D3 Slide
C
Pickup Unit
View for C
View for B
Fig. D5
- 11 -
(S-4) [6] AV CBA CN1601 (S-6) (S-8)
CN1001 [8] Rear Panel
(S-6)
[5] Switch
CBA
(S-7) Desolder
(S-7)
(S-5)
(S-5)
Fig. D7
(L-4)
[7] DVD Main CBA Unit
Fig. D6
HOW TO MANUAL EJECT
1. Remove the Top Cover.
2. Insert the eject-bar (length = approximately 80
mm, diameter = approximately 3 mm) into the
manual eject hole on the DVD Mecha. Then,
press it until the tray is ejected.
Top Cover
1
Tray Manual
Eject Hole
DVD Mecha
2
3
Eject-Bar (Length = approximately 80 mm, Diameter = approximately 3 mm)
- 12 -
TROUBLESHOOTING
FLOW CHART NO.1
The power cannot be turned on.(1)
No
Is the fuse normal? See FLOW CHART No.3
Yes
Is normal state restored when once unplugged No Check if there is any leak or shor-circuit on the
power cord is plugged again after several seconds? primary circuit component?
Yes (Q1001, Q1003,T1001, D1001, D1002, D1004,
No D1005, D1011, C1003, C1005)
Is the EV 5V line voltage normal?
Yes
No
Is the voltage of secondary side normal? Check each rectifying circuit of secondary circuit.
FLOW CHART NO.2
The power cannot be turned on.(2)
No
Does the change from STANDBY LED indicate
turn-off?
Yes
No Check the EV 3.3V line.
Is the voltage of 3.3V supplied to Q2021?
Yes
No
Is the "H" signal inputted to the base of Q2021, Check the POWER button line.
when the POWER button activated on the DVD?
Yes
No
Is the "H" signal inputted at base of Q2021, Check the line between the remote control
when the POWER button activated on the remote receiver and Pin(26) of CN1001.
control unit?
Yes
Replace Q2021.
The STANDBY LED indicate is flashing after 0.5 sec.
Yes (below, confirmed operating at LED turn-off of 0.5 sec. interval.)
Are the "P-ON-H" pulse outputted from the Replace the DVD Main CBA Unit.
pin(20) of CN1001? No
Yes
No
Is the P-CON switch circuit operated normally? Check each component, and replace.
(Q1002, Q1005, Q1006, IC1002, D1036, D1046)
FLOW CHART NO.3
The fuse blows out.
Check the presence that the primary component Check the presence that the rectifying diode or
is leaking or short then service it if defective. circuit is shorted in each rectifying circuit of
secondary side then service it if defective.
After servicing, replace the fuse.
- 13 -
FLOW CHART NO.4
When the output voltage fluctuates.
Does the photo coupler circuit on the secondary No Check the circuit and replace the parts.
side operate normally? (IC1001, IC1006, D1048, D1015)
Yes
Does the photo coupler circuit on the primary side No Check the circuit and replace the parts.
operate normally? (IC1001, D1020, D1024)
FLOW CHART NO.5
When buzz sound can be heard in the vicinity of the power circuit.
Check if there is any short-circuit on the rectifying diode and the circuit in each rectifying circuit of the secondary side.
(D1003, D1008, D1009, D1013, D1016, D1030, IC1002, Q1002, Q1004, Q1007, Q1011, Q1014)
FLOW CHART NO.6
The fluorescent display tube does not light.
No
Is the voltage of 5V supplied to Pins(6, 24) Check the EV 5V line.
of IC2001?
Yes No
Is the voltage of -24V supplied to Pin(15) of Check the -FL (-24V) line.
IC2001?
Yes No
Is there 500kHz oscillation to Pin(26) of IC2001? Check R2001, IC2001 and their periphery.
Yes
No
Check the signal lines of FP-DIN, FP-DOUT, Check or replace IC2001 and DVD Main CBA unit.
FP-CLK, FP-STB of IC2001 and CN1001?
Yes
No
Are the filament voltage applied between (1, 2) Check or replace the power circuit, D1016, D1017
and (34, 35) of the fluorescent display tube? and R1042, and their periphery.
Also negative voltage applied between these pins
and GND?
Yes
Replace the fluorescent display tube.
FLOW CHART NO.7
The key operation is not functioning.
Are the contact point and the installation state of the
key switches(SW2204-2210, 2901-2907) normal?
Yes
Is the control voltage normally supplied to No Check the key switches (SW2204-2210,
Pins(3, 4, 7, 8, 9, 10, 11, 12, 13, 14) of IC2001? 2901-2907), and their periphery circuit.
- 14 -
FLOW CHART NO.8
No operation is possible from the remote control unit.
Operation is possible from the DVD, but no
operation is possible from the remote control unit.
Yes
Is no operation possible if replacing the remote No
Original remote control unit is poor.
control unit?
Yes
No
Is 5V voltage supplied to Pin(3) terminal of infrared Check EV 5V line.
remote control receiver?
Yes
Is the "L" pulse sent out from Pin(1) terminal of the No
receiver when the infrared remote control is activated? Replace the infrared remote control receiver.
Yes
No
Is the "L" pulse signal supplied to Pin(26) of Check the line between the infrared remote control
CN1001 from Pin(1) of receiver? (Be operated by receiver and Pin(26) of CN1001.
SEARCH(-), SEARCH(+), PLAY, STILL/PAUSE, Yes
STOP, POWER and OPEN/CLOSE button.) Replace DVD Main CBA unit.
FLOW CHART NO.9
PON 12V is not outputted.
No
Is PON12V voltage supplied to the collector of Q1002? Check D1009, C1012 and the periphery circuit.
Yes
No
Does the P-ON switch circuit operate normally? Check each component, and replace.
(Q1005, Q1006, D1036, etc.)
Yes
Replace Q1002.
FLOW CHART NO.10
PON 5V is not outputted. (PON 12V is outputted normally.)
No
Is 5V voltage supplied to the collector of Q1004? Check D1030, D1048, C1035, C1048 and the
periphery circuit.
Yes
No Check D1046 and the periphery circuit.
Is the "H" pulse inputted into the base of Q1004?
Yes
Replace Q1004.
FLOW CHART NO.11
-FL is not outputted.
No Check D1003 and periphery circuit.
Is -24V voltage supplied to the anode of D1003?
Yes
Check if there is any leak or short-circuit on the
loaded circuit.
FLOW CHART NO.12
PON 3.3V is not outputted.
No
Is 3.3V voltage supplied to the emitter of Q1011? Check D1008, D1015, C1007, C1038 and the
periphery circuit.
Yes
No
Does the P-CON switch circuit operate normally? Check each component, and replace.
(Q1005, Q1006, etc.)
Yes
Replace Q1011.
- 15 -
FLOW CHART NO.13
PON 1.8V is not outputted.
No Check D1013, C1014 and the periphery circuit.
Is 2.5V voltage supplied at pin(1) of IC1002?
Yes
No
Is the "H" pulse inputted into pin(4) of IC1002? Check PWRCON line.
Yes
Replace IC1002.
FLOW CHART NO.14
The disc tray cannot be opened and closed.
(It can be done using the remote control unit.)
No
Is 0V voltage supplied to Pin(9) of IC2001 when Check the SW2208 and OPEN/CLOSE button.
the OPEN/CLOSE button is activated on the DVD?
Yes
See FLOW CHART NO. 15.
FLOW CHART NO.15
The disc tray cannot be opened and closed.
Replace the DVD Main CBA Unit.
No
No improvement can be found. The malfunction of the original DVD Main CBA Unit.
Yes
Replace the DVD Mecha.
FLOW CHART NO.16
[No Disc] is indicated. (When the focus error occur.)
Replace the DVD Main CBA Unit.
No
No improvement can be found. The malfunction of the original DVD Main CBA Unit.
Yes
Replace the DVD Mecha.
- 16 -
FLOW CHART NO.17
[No Disc] is indicated. (When the focus servo is not functioning.)
Replace the DVD Main CBA Unit.
No
No improvement can be found. The malfunction of the original DVD Main CBA Unit.
Yes
Replace the DVD Mecha.
FLOW CHART NO.18
[No Disc] is indicated. (When the laser beam does not light up.)
Replace the DVD Main CBA Unit.
No
No improvement can be found. The malfunction of the original DVD Main CBA Unit.
Yes
Replace the DVD Mecha.
FLOW CHART NO.19
Both functions of picture and sound do not operate normally.
Replace the DVD Main CBA Unit.
No
No improvement can be found. The malfunction of the original DVD Main CBA Unit.
Yes
Replace the DVD Mecha.
- 17 -
FLOW CHART NO.20
Picture does not appear normally.
Set the disc on the disc tray and playback.
No
Are the video signals outputted to each pin of Replace the DVD Main CBA Unit or DVD Mecha .
CN1601 on the the AV CBA?
CN1601 10PIN CVBS
CN1601 8PIN S-Y
CN1601 12PIN S-C
CN1601 6PIN B
CN1601 4PIN R
CN1601 2PIN G
Yes
Are the video signals shown above inputted into Check the line between each pins of CN1601 and
each pin of IC1402? No each pins of IC1402 on the AV CBA .
IC1402 4PIN CVBS CN1601 10PIN IC1402 4PIN CVBS
IC1402 6PIN S-Y CN1601 8PIN IC1402 6PIN S-Y
IC1402 2PIN S-C CN1601 12PIN IC1402 2PIN S-C
IC1402 14PIN B CN1601 6PIN IC1402 14PIN B
IC1402 16PIN R CN1601 4PIN IC1402 16PIN R
IC1402 12PIN G CN1601 2PIN IC1402 12PIN G
Yes
Are the video signals outputted to each pin
of IC1402?
IC1402 30PIN CVBS
IC1402 27PIN S-Y No Is 5V voltage supplied to the Pins(1, 3, 5, 34) of
IC1402 33PIN S-C IC1402?
IC1402 21PIN B Yes
IC1402 18PIN R Check or replace IC1402?
IC1402 12PIN G
Yes
Are the video signals outputted to the specific
output terminal?
Are the composite video signals and component No Check the periphery of the VIDEO OUT terminal
video signals outputted to the VIDEO OUT (JK1402, JK1404) from Pins(18, 21, 24, 30) of IC1402.
terminal (JK1402, JK1404)?
No Check the periphery of JK1401 from
Are the luminance signals outputted to the Pin(27) of IC1402.
S-OUT terminal (JK1401)? No Check the periphery of JK1401 from
Are the chroma signals outputted to the Pin(33) of IC1402.
S-OUT terminal (JK1401)?
- 18 -
FLOW CHART NO.21
Audio is not outputted.
Set the disc on the disc tray and playback.
No
Are the analog audio signals outputted to each pin Replace the DVD Main CBA Unit or DVD Mecha.
of CN1601 on the AV CBA?
CN1601 16PIN AUDIO-L
CN1601 18PIN AUDIO-R
Yes
Are the analog audio signals inputted to each pin Check each line between each pin of CN1601
of IC1201. and each pin of IC1201 on the AV CBA.
No
IC1201 2PIN AUDIO-L CN1601 16PIN IC1201 2PIN AUDIO-L
IC1201 6PIN AUDIO-R CN1601 18PIN IC1201 6PIN AUDIO-R
Yes
Is the "H" level mute signals outputted to CN1601
on the AV CBA ?
No
CN1601 19PIN A-MUTE Replace the DVD Main CBA Unit.
CN1601 17PIN A-R-MUTE
CN1601 15PIN A-L-MUTE
Yes
Are the analog audio signals inputted to each pin
of IC1201?
No
IC1201 1PIN AUDIO-L Check or replace IC1201.
IC1201 7PIN AUDIO-R
Yes
Are the audio signals outputted to the specific No Check the periphery of Pins(1,7) of IC1201
output terminal? and JK1201.
Are the audio signals outputted to the L/R OUT
terminal (JK1201)?
- 19 -
System Control Block Diagram BLOCK DIAGRAMS
IC601
(DVD HOST PROCESSOR) AV CBA
IC301 200 TFWD
(FRONT END PROCESSOR)
201 TREV
187 TIN
TFWD 188 TOUT
42 TFWD
TREV
41 TREV
TIN
59 TIN
TOUT +3.3V IC2001
60 TOUT IC605
SCK (FRONT PANEL CONTROL)
70 SCK FL2001
FROM/TO STDIO
72 STDIO 5 RESET 4 124 RESET
RF SIGNAL SEN 1G 23
10 SEN
~
GRID FIP
~
PROCESS MUTE
/SERVO 46 MUTE HANG 48 7G 17
PS
BLOCK 47 PS Q701
DIAGRAM a/KEY-1 7
b/KEY-2 8
CD/DVD c/KEY-3 9
71 CD/DVD
CFE d/KEY-4 10
62 CFE SEGMENT
CAS READY 49 208 READY e/KEY-5 11
63 CAS
STANDBY /FERS 82 186 /FERS CN501 CN1001 f/KEY-6 12
64 STANDBY
IC606 VFD-STB 3 21 FP-STB 21 2 FP-STB g/KEY-7 13
(INVERTER)
VFD-DIN 1 22 FP-DIN 22 28 FP-DIN h/KEY-8 14
OSCI 23
VFD-DOUT 2 23 FP-DOUT 23 27 FP-DOUT i 16
OSCO 24 2 4 120 CLOCK
VFD-CLK 204 24 FP-CLK 24 1 FP-CLK
X301
(16.9344MHz) PWECON 207 20 PWRCON 20
REMOTE 125 26 REMOTE 26
13 X601 27MHz
BUSCLR 53 22 BUSCLR
~
16 CN2002 CN2201
SDA 52
26 CPUADR0 10 KEY-1 10
ADDRESS BUS SDA 51 20 SDA RM2001
~
~
33 CPUADR17 11 KEY-2 11
SCL 50 21 SCL REMOTE
35 SENSOR 9 KEY-3 9
SCL 79 +3.3V
~
7 KEY-4 7
40
CN501 CN1001 1 KEY-5 1 KEY
FROM/TO 84 CPUDT0
DVD SIGNAL OC-KEY 105 25 OC-KEY 25 2 KEY-6 2 MATRIX
DATA BUS
~
~
PROCESS 91 CPUDT7 KEY OUT 44 127 IRQ2 ASPECT 193 4 KEY-7 4
BLOCK NINT1
76 NINT1 6 KEY-8 6
DIAGRAM NINT2
77 NINT2 K2 4 5 K1 5
WAIT
1 WAIT K1 3 8 K2 8
/RE
2 /RE 12 OC-KEY 12
/WEL KEY IN 45
3 /WEL
CS1 SW2208
6 CS1
RESET OPEN/CLOSE
11 RESET
TO VIDEO
BLOCK DIAGRAM ASPECT
SW2115
POWER
IC102 (OP AMP) JP1004 JP1003
1 K2 1 FUNCTION CBA
FG-IN 80 14 12 2 KEY-2 2
3 STANDBY-LED 3 +3.3V
CN401 D2021 Q2021
FG
10 FG-IN STANDBY
SENSOR
RELAY DVD MAIN CBA UNIT
FG CBA
CBA SWITCH CBA
- 20 -
RF Signal Process/Servo Block Diagram
DATA(VIDEO/AUDIO) SIGNAL FOCUS SERVO SIGNAL TRACKING SERVO SIGNAL SLIDE SERVO SIGNAL DISK SERVO SIGNAL
IC101 (RF SIGNAL PROCESS)
PICK-UP UNIT DVD MAIN CBA UNIT
HOLD 41
TESTSG
CN101 47 46 FROM/TO DVD
A 6 57 ARF SIGNAL PROCESS