SERVICE MANUAL Ver. 2 MODEL DVD-1930CI DVD … MANUAL DVD AUDIO-VIDEO / SUPER AUDIO CD PLAYER MODEL DVD-1930CI DVD-757 TOKYO, JAPAN Denon Brand Company, D&M Holdings Inc. X0306V.02

SERVICE MANUAL

DVD AUDIO-VIDEO / SUPER AUDIO CD PLAYER

MODEL DVD-1930CI

DVD-757

TOKYO, JAPANDenon Brand Company, D&M Holdings Inc.

X0306V.02 DE/CDM 0609

Some illustrations using in this service manual areslightly different from the actual set.

Please use this service manual with referring to theoperating instructions without fail.

For purposes of improvement, specifications anddesign are subject to change without notice.

8

For U.S.A. & Canada model

Please refer to theMODIFICATION NOTICE.

Ver. 2

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2

DVD-1930CI / DVD-757

Please heed the points listed below during servicing and inspection.

Heed the cautions!Spots requiring particular attention when servicing, such asthe cabinet, parts, chassis, etc., have cautions indicated onlabels or seals. Be sure to heed these cautions and the cau-tions indicated in the handling instructions.

Caution concerning electric shock!(1) An AC voltage is impressed on this set, so touching inter-

nal metal parts when the set is energized could causeelectric shock. Take care to avoid electric shock, by for ex-ample using an isolating transformer and gloves whenservicing while the set is energized, unplugging the powercord when replacing parts, etc.

(2)There are high voltage parts inside. Handle with extra carewhen the set is energized.

Caution concerning disassembly and assembly!Though great care is taken when manufacturing parts fromsheet metal, there may in some rare cases be burrs on theedges of parts which could cause injury if fingers are movedacross them. Use gloves to protect your hands.

Only use designated parts!The set's parts have specific safety properties (fire resis-tance, voltage resistance, etc.). For replacement parts, besure to use parts which have the same properties. In particu-lar, for the important safety parts that are marked ! on wiringdiagrams and parts lists, be sure to use the designated parts.

Be sure to mount parts and arrange thewires as they were originally!

For safety reasons, some parts use tape, tubes or other insu-lating materials, and some parts are mounted away from thesurface of printed circuit boards. Care is also taken with thepositions of the wires inside and clamps are used to keepwires away from heating and high voltage parts, so be sure toset everything back as it was originally.

Inspect for safety after servicing!Check that all screws, parts and wires removed or discon-nected for servicing have been put back in their original posi-tions, inspect that no parts around the area that has beenserviced have been negatively affected, conduct an insulationcheck on the external metal connectors and between theblades of the power plug, and otherwise check that safety isensured.

(Insulation check procedure)Unplug the power cord from the power outlet, disconnect theantenna, plugs, etc., and turn the power switch on. Using a500V insulation resistance tester, check that the insulation re-sistance between the terminals of the power plug and the ex-ternally exposed metal parts (antenna terminal, headphonesterminal, microphone terminal, input terminal, etc.) is 1M orgreater. If it is less, the set must be inspected and repaired.

Concerning important safety parts

Many of the electric and structural parts used in the set havespecial safety properties. In most cases these properties aredifficult to distinguish by sight, and using replacement partswith higher ratings (rated power and withstand voltage) doesnot necessarily guarantee that safety performance will be pre-served. Parts with safety properties are indicated as shownbelow on the wiring diagrams and parts lists is this servicemanual. Be sure to replace them with parts with the designat-ed part number.

(1) Schematic diagrams ... Indicated by the ! mark.

(2) Parts lists ... Indicated by the ! mark.

Using parts other than the designated partscould result in electric shock, fires or otherdangerous situations.

SAFETY PRECAUTIONSThe following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECKBefore returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassisresistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the powercord is less than 460 kohms, the unit is defective.

LASER RADIATIONDo not stare into beam or view directly with optical instruments, class 3A laser product.

CAUTION

CAUTION

(1)

(2)

!

500V M

(1) !

(2) !

w w w . x i a o y u 1 6 3 . c o m

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SPECIFICATIONS

Notes:

1. All Items are measured without pre-emphasis unless otherwise specified.

2. Power supply: AC 120 V, 60 Hz

3. Load Impedance: 100 k load (Audio Output)4. Room Ambient: +25 C

Item Conditions Unit Nominal Limit

1. Video Output 75 load Vpp 1.0 0.1

2. Coaxial Digital Out 75 load mVpp 500 50

3. Audio (PCM)

3-1. Output Level 1 kHz, 0 dB Vrms 2.0

3-2. S/N dB 115

3-3. Freq. Response

DVD fs = 48 kHz, 20 Hz ~ 22 kHz dB 1.0

CD fs = 44.1 kHz, 20 Hz ~ 20 kHz dB 1.0

3-4. THD+N

DVD 1 kHz, 0 dB % 0.004

CD 1 kHz, 0 dB % 0.004

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Safety Check after ServicingExamine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and wires have been returned to their original positions. Afterwards, do the following tests and confirm the specified values to verify compliance with safety standards.

1. Clearance Distance

When replacing primary circuit components, confirm specified clearance distance (d) and (d) between soldered terminals, and between terminals and surrounding metallic parts. (See Fig. 1)

Table 1: Ratings for selected area

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

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 terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, 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 AC voltmeter to measure across the terminals of load Z. See Fig. 2 and the following table.

Table 2: Leakage current ratings for selected areas

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

AC Line Voltage Clearance Distance (d), (d)

120 V 3.2 mm (0.126 inches)

AC Line Voltage Load Z Leakage Current (i) Earth Ground (B) to:

120 V 0.15 F CAP. & 1.5 k RES. Connected in parallel i 0.5 mA Peak Exposed accessible parts

Chassis or Secondary Conductor

Primary Circuit

Fig. 1

d' d

AC Voltmeter (High Impedance)

Exposed Accessible Part

B Earth Ground Power Cord Plug Prongs

Z

Fig. 2

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STANDARD NOTES FOR SERVICING

Circuit Board Indications1. The output pin of the 3 pin Regulator ICs is

indicated as shown.

2. For other ICs, pin 1 and every fifth pin are indicated as shown.

3. The 1st pin of every male connector is indicated as shown.

Instructions for Connectors1. When you connect or disconnect the FFC (Flexible

Foil Connector) cable, be sure to first disconnect the AC cord.

2. FFC (Flexible Foil Connector) cable should be inserted parallel into the connector, not at an angle.

Pb (Lead) Free SolderWhen soldering, be sure to use the Pb free solder.

How to Remove / Install Flat Pack-IC

1. Removal

With Hot-Air Flat Pack-IC Desoldering Machine:

1. Prepare the hot-air flat pack-IC desoldering machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds). (Fig. S-1-1)

2. Remove the flat pack-IC with tweezers while applying the hot air.

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)

4. Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)

CAUTION:

1. The Flat Pack-IC shape may differ by models. Use an appropriate hot-air flat pack-IC desoldering machine, whose shape matches that of the Flat Pack-IC.

2. Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape around the flat pack-IC to protect other parts from damage. (Fig. S-1-2)

Top View

Out In

Bottom ViewInput

5

10

Pin 1

Pin 1

FFC Cable

Connector

CBA

* Be careful to avoid a short circuit.

Fig. S-1-1

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3. 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.

With Soldering Iron:

1. Using desoldering braid, remove the solder from all 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. Lift each lead of the flat pack-IC upward one by 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 machine. (Fig. S-1-4)



Hot-airFlat Pack-ICDesolderingMachine

CBA

Flat Pack-IC

Tweezers

MaskingTape

Fig. S-1-2

Flat Pack-IC Desoldering Braid

Soldering Iron

Fig. S-1-3

Fine TipSoldering Iron

SharpPin

Fig. S-1-4

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With Iron Wire:

1. Using desoldering braid, remove the solder from all 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.



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.

2. Installation1. Using desoldering braid, remove the solder from

the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily.

2. The mark on the flat pack-IC indicates pin 1. (See Fig. S-1-7.) Be sure this mark matches the 1 on the PCB when positioning for installation. Then presolder the four corners of the flat pack-IC. (See Fig. S-1-8.)

3. Solder all pins of the flat pack-IC. Be sure that none of the pins have solder bridges.

To Solid Mounting Point

Soldering Iron

Iron Wire

or

Hot Air Blower

Fig. S-1-5

Fine TipSoldering IronCBA

Flat Pack-ICTweezers

Fig. S-1-6

Example :

Pin 1 of the Flat Pack-ICis indicated by a " " mark. Fig. S-1-7

Presolder

CBA

Flat Pack-IC

Fig. S-1-8

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Instructions for Handling Semi-conductorsElectrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work.

1. Ground for Human Body

Be sure to wear a grounding band (1 M) that is properly grounded to remove any static electricity that may be charged on the body.

2. Ground for Workbench

Be sure to place a conductive sheet or copper plate with proper grounding (1 M) 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 grounding band, be careful to avoid contacting semi-conductors with your clothing.

CBA

Grounding Band

Conductive Sheet orCopper Plate

1M

1M

CBA

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CABINET DISASSEMBLY INSTRUCTIONS

1. Disassembly FlowchartThis flowchart indicates the disassembly steps to gainaccess to item(s) to be serviced. When reassembling,follow the steps in reverse order. Bend, route, anddress the cables as they were originally.

2. Disassembly MethodNote:

(1) Identification (location) No. of parts in the figures

(2) Name of the part

(3) Figure Number for reference

(4) Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered. P = Spring, L = Locking Tab, S = Screw, CN = Connector* = Unhook, Unlock, Release, Unplug, or Desoldere.g. 2(S-2) = two Screws (S-2), 2(L-2) = two Locking Tabs (L-2)

(5) Refer to Reference Notes.

About tightening screws

When tightening screws, tighten them with the following torque.

ID/Loc. No.

Part

Removal

Fig.No.

Remove/*Unhook/Unlock/Release/Unplug/Desolder

Note

[1] Top Cover D1 5(S-1) ---

[2] Front Unit D2 *4(L-1), *2(L-2), *3(L-3), *CN2001 1

[3] Tray Panel D2 *2(L-4) 1

[4] Function CBA D3 6(S-2) ---

[5] Front Assembly D3 ---------- ---

[6] Reinforce Plate D4 2(S-3) ---

[7] Rear Panel D4 8(S-4), (S-5), (S-6),2(S-7) 4

[8] DVD Main CBA Unit D5

3(S-8), *CN201, *CN301, *CN401, *CN601, *CNS01, *CNF02

24

[9] Interface CBA D6 (S-9) ---

[1] Top Cover

[5] Front Assembly

[2] Front Unit

[3] Tray Panel

[6] Reinforce Plate

[7] Rear Panel

[16] Loader Base

[18] Main PCB Holder

[8] DVD Main CBA Unit

[13] DVD Mechanism

[17] Power PCB Holder

[14] LED CBA

[4] Function CBA

[11] 5.1ch Amp CBA

[12] Jack PCB Holder

[9] Interface CBA

[10] D Sub Holder

[15] AV CBA

[10] D Sub Holder D6 (S-10) ---

[11] 5.1ch Amp CBA D6(S-11), 2(L-5), *CN7101 ---

[12] Jack PCB Holder D6 2(S-12) ---

[13] DVD MechanismD5D7 4(S-13)

23

[14] LED CBA D8 *CN2102 ---

[15] AV CBA D8 4(S-14), (S-15) ---

[16] Loader Base D9 4(S-16) ---

[17] Power PCB Holder D9 2(S-17) ---

[18] Main PCB Holder D9 (S-18) ---

(1)

(2)

(3)

(4)

(5)

Screws Torque

(S-1), (S-2), (S-3), (S-4), (S-5), (S-6), (S-7), (S-8), (S-9), (S-10), (S-11), (S-12), (S-13), (S-14),(S-15), (S-16), (S-17),(S-18)

0.45 0.05 Nm

ID/Loc. No.

Part

Removal

Fig.No.

Remove/*Unhook/Unlock/Release/Unplug/Desolder

Note

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Reference Notes1. CAUTION 1: Locking Tabs (L-1), (L-2), (L-3) and

(L-4) are fragile. Be careful not to break them.

1) Release four Locking Tabs (L-1), then release two Locking Tabs (L-2).

2) Release three Locking Tabs (L-3).

3) Disconnect connector CN2001, then remove the Front Unit.

2. CAUTION 2: Electrostatic breakdown of the laser diode in the optical system block may occur as a potential difference caused by electrostatic charge accumulated on cloth, human body etc., during unpacking or repair work.To avoid damage of pickup follow next procedures.

1) Short the three short lands of FPC cable with solder before removing the FFC cable (CN201) from it. If you disconnect the FFC cable (CN201), the laser diode of pickup will be destroyed. (Fig. D5)

2) Disconnect Connectors (CN301), (CN401) and (CN601). Remove three screws (S-8) and lift the DVD Main CBA Unit. (Fig. D5)

3. CAUTION 3: When reassembling, confirm the FFC cable (CN201) is connected completely. Then remove the solder from the three short lands of FPC cable. (Fig. D5)

4. CAUTION 4: When installing the DVD Main CBA Unit with a screw, hold and press the DVD Main CBA Unit to align the HDMI connector with the connectors hole for HDMI on the Rear Panel.

Fig. D1

[1] Top Cover (S-1)

(S-1)

(S-1)

[2] Front Unit

[3] Tray Panel

CN2001

(L-1)

(L-1)

(L-2)

(L-2)

(L-4)(L-4)

(L-3)

Fig. D2

[4] Function CBA

[5] Front Assembly

(S-2)

(S-2)

Fig. D3

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[7] Rear Panel(S-6)

(S-4)

(S-4)

(S-5)

(S-4)

Fig. D4

(S-7)[6] Reinforce Plate

(S-3)

(S-3)

(S-8)(S-8)

[8] DVD Main CBA Unit

CN401

CN301

A

Fig. D5

CNF02

CN201

CN601

(S-8)

CNS01

Short the three short lands by soldering.(Either of two places.)

View for AFPC Cable

(S-11)

(S-12)[12] JackPCB Holder

[11] 5.1ch Amp CBA

(L-5)

Fig. D6

[9] InterfaceCBA

[10] D SubHolder

(S-9)

(S-10)

CN7101

Fig. D7

[13] DVD Mechanism

(S-13)

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3. How to Eject Manually1. Remove the Top Cover.

2. Rotate the roulette in the direction of the arrow as shown below.

[15] AV CBA

[14] LED CBA

(S-14)

(S-14)

(S-15)

CN2102

Fig. D8

[16] Loader Base

[18] Main PCBHolder

(S-16)

Fig. D9

(S-16)

(S-18)

[17] Power PCB Holder

(S-17)

A

View for A

Rotate this roulette in the direction of the arrow

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HOW TO INITIALIZE THE DVD PLAYER

To put the program back at the factory-default, initialize the DVD player as the following procedure.

1. Press [1], [2], [3], [4], and [DISPLAY] buttons on the remote control unit in that order. Fig. a appears on the screen.

2. Press [CLEAR] button on the remote control unit. Fig. b appears on the screen.

When OK appears on the screen, the factory default will be set.

3. To exit this mode, press [POWER OFF] button.

MODEL : *******Version : *.**Region : *

EXIT: POWEREEPROM CLEAR : CLEAR

Fig. a

"*******" differs depending on the models.


EEPROM CLEAR : OK



Fig. b

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FIRMWARE RENEWAL MODE

1. Turn the power on and remove the disc on the tray.

2. To put the DVD player into version up mode, press [9], [8], [7], [6], and [SEARCH MODE] buttons on the remote control unit in that order. The tray will open automatically. Fig. a appears on the screen and Fig. b appears on the VFD.

The DVD player can also enter the version up mode with the tray open. In this case, Fig. a will be shown on the screen while the tray is open.

3. Load the disc for version up.

4. The DVD player enters the F/W version up mode automatically. Fig. c appears on the screen and Fig. d appears on the VFD. If you enter the F/W for different models, Disc Error will appear on the screen, then the tray will open automatically.

The appearance shown in (*1) of Fig. c is described as follows:

5. After programming is finished, the tray opens automatically. Fig. e appears on the screen and the checksum in (*2) of Fig. e appears on the VFD (Fig. f).

At this time, no button is available.

6. Remove the disc on the tray.

7. Unplug the AC cord from the AC outlet. Then plug it again.

8. Turn the power on by pressing the [POWER ON] button and the tray will close.

9. Press [1], [2], [3], [4], and [DISPLAY] buttons on the remote control unit in that order. Fig. g appears on the screen.

F/W Version Up Mode Model No : *******VERSION : *.**

Please insert a DISCfor F/W Version Up.

EXIT: POWER


Fig. a Version Up Mode Screen

Fig. b VFD in Version Up Mode

VERSION : ************.ab7Reading...


Fig. c Programming Mode Screen


(*1)

Fig. d VFD in Programming Mode (Example)

No. Appearance State

1 Reading... Sending files into the memory

2 Erasing... Erasing previous version data

3 Programming... Writing new version data

VERSION : ************.ab7CompletedSUM : 7ABC



Fig. e Completed Program Mode Screen

(*2)

Fig. f VFD upon Finishing the Programming Mode (Example)



Fig. g


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10. Press [CLEAR] button on the remote control unit. Fig. h appears on the screen.

When OK appears on the screen, the factory default will be set. Then the firmware renewal mode is complete.

11. To exit this mode, press [POWER OFF] button.


EEPROM CLEAR : OK



Fig. h

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TROUBLESHOOTING

FLOW CHART NO.2The fuse blows out.

After servicing, replace the fuse.

Check the presence that the primary componentis leaking or shorted and service it if defective.

Check the presence that the rectifying diode orcircuit is shorted in each rectifying circuit of secondary side, and service it if defective.

FLOW CHART NO.3When the output voltage fluctuates.

Yes

No

FLOW CHART NO.4When buzz sound can be heard in the vicinity of power circuit.

Check if there is any short-circuit on the rectifying diode and the circuit in each rectifying circuit of the secondary side, and service it if defective. (D1003, D1006, D1008, D1016, D1030, IC1002, Q1002, Q1004, Q1005, Q1011, Q1014)

Does the photo coupler circuit on the secondary side operate normally?

Check IC1001, D1012, D1024 and their periphery, and service it if defective.

Check IC1001, IC1006 and their periphery, and service it if defective.

FLOW CHART NO.5-FL is not outputted.

Is approximately -23V voltage supplied to the anode of D1003?

Check D1003 and periphery circuit, and service it if defective.

Check if there is any leak or short-circuit on the loaded circuit, and service it if defective.

Yes

No

FLOW CHART NO.1

The power cannot be turned on.

Is the fuse normal?

Is normal state restored when once unplugged power cord is plugged again after several seconds?

Is the EV +3.3V line voltage normal?

See FLOW CHART No.2

Check if there is any leak or short-circuiting on the primary circuit component, and service it if defective. (Q1001, Q1003, Q1008, T1001, D1001, D1002, D1004, D1005, D1011, C1003, C1005)

Check each rectifying circuit of the secondary circuitand service it if defective.

Yes

Yes

Yes

No

No

No

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FLOW CHART NO.7

P-ON+5V is not outputted. (EV+10V is outputted normally.)

Is the "H" signal inputted into the base of Q1004?

Replace Q1004.

Replace Q1014.

Check R1068 and D1046, and service it if defective.Yes

No

Is the "H" signal inputted into the base of Q1014? Check D1047, R1069, R1098 and the periphery circuit, and service it if defective.

No

FLOW CHART NO.8P-ON+3.3V is not outputted. (P-ON+10V is outputted normally.)

Is 3.3V voltage supplied to the collector of Q1011?

Replace Q1011 or R1066 or R1067.

Check D1008, C1007, C1038, L1007, and the periphery circuit, and service it if defective.Yes

No

FLOW CHART NO.9EV+5V is not outputted.

Is EV+10V outputted normally? Refer to "FLOW CHART NO.6"

Yes

Yes

No

FLOW CHART NO.10EV+1.2V is not outputted.

Is 2.5V voltage supplied to Pin(3) of IC1002?

Replace IC1002.

Check D1006, C1014, L1008 and the periphery circuit, and service it if defective.

Yes

No

FLOW CHART NO.6P-ON+10V (EV+10V) is not outputted.

Is 10V voltage supplied to the emitter of Q1002?

Is the voltage of base on Q1002 lower than thevoltage of emitter on Q1002 when turning the power on?

Replace Q1002.

Check D1030, D1048, C1035, C1048, L1009, and the periphery circuit, and service it if defective.

Check Q1016 and PWRCON line and service it if defective.

Yes

Yes

No

No

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YesNo

FLOW CHART NO.12The key operation is not functioning.

Are the contact point and the installation state of the key switches (SW2101, SW2103-2108, SW2181-2183) normal?

When pressing each switches (SW2101, SW2103-2108, SW2181-2183), do the voltage of each pin of IC2001 (shown below) increase?SW2103, 2104, 2106, 2107, 2182: IC2001 3PINSW2101, 2105, 2108, 2181, 2183: IC2001 4PIN

Check the switches (SW2101, SW2103-2108, SW2181-2183) and their periphery, and service it if detective.

No Re-install the switches (SW2101, SW2103-2108, SW2181-2183) correctly or replace the poor switch.

Replace IC2001.Yes

FLOW CHART NO.13No operation is possible from the remote control unit.

Operation is possible from the DVD, but nooperation is possible from the remote control unit.

Replace the infrared remote control receiver (RM2001)or replace the remote control unit.

Check the line between Pin(1) terminal of receiver (RM2001) and Pin(26) of CN1001, and service it if defective.

Is the "L" pulse sent out Pin(1) terminal of receiver(RM2001) when the infrared remote control is activated?

Is the "L" pulse supplied to the Pin(26) of CN1001?

Replace DVD Main CBA Unit.

Is 5V voltage supplied to Pin(3) terminal ofthe infrared remote control receiver (RM2001)?

YesNo

Check EV+5V line and service it if defective.No

No

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

FLOW CHART NO.11The fluorescent display tube does not light up.

Is 3.3V voltage supplied to Pins(6,24) of IC2001?

Is the voltage of approximately -20V supplied to Pin(15) of IC2001?

Is there 500kHz oscillation at Pin(26) of IC2001?

Are the filament voltage supplied between Pins(1, 2) and Pins(29, 30) of the fluorescent display tube? And the negative voltage applied between these pins and GND?

Replace the fluorescent display tube.

Check the EV+3.3V line and service it if defective.

Check the -FL (-20V) line and service it if defective.

Check R2002, IC2001 and their periphery, and service it if defective.

Check PWRCON line, and service it if defective.

Is the "H" signal inputted to base of Q1016?

Check D1016, D1017, T1001, and their periphery, and service it if defective.

Is -14V voltage supplied to collector of Q1005?

No

Yes

YesNo

Check Q1015, Q1016, D1055, and their periphery, and service it if defective.

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FLOW CHART NO.17[No Disc] indicated. (When the focus servo is not functioning.)

FLOW CHART NO.18[No Disc] indicated. (When the laser beam does not light up.)

Replace the DVD Main CBA Unit.

Replace the DVD Mechanism.

No

Yes



No

Yes

No improvement can be found. Original DVD Main CBA Unit is poor.


FLOW CHART NO.16[No Disc] indicated. (When the focus error occurs.)




No

Yes

Yes

FLOW CHART NO.15The disc tray cannot be opened and closed.


Original DVD Main CBA Unit is poor.


No improvement can be found.No

Yes

FLOW CHART NO.14The disc tray cannot be opened and closed. (It can be done using the remote control unit.)

Is the normal control voltage inputted to Pin(4) of IC2001? Refer to "FLOW CHART NO.12"

Refer to "FLOW CHART NO.15"

Replace the "OPEN/CLOSE" button (SW2108).No

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Is 5V voltage applied to the Pin(4, 12) of IC1402 and Pin(4) of IC1403?

Replace IC1402 or IC1403.

Check P-ON+5V line andservice it if detective.

Are the video signals outputted to each pin of IC1402 or IC1403?

Yes No

Yes

Yes

NoIC1402 13PIN S-Y(I/P)IC1402 11PIN Pb/CbIC1402 10PIN Pr/CrIC1403 5PIN S-Y(I)IC1403 6PIN CVBSIC1403 7PIN S-C

Check the periphery of JK1404 from Pins (10, 11, 13) of IC1402 and service it if detective.

Check the periphery of JK1404 from Pin(6) of IC1403 and service it if detective.

Check the periphery of JK1401 from Pin (5) of IC1403 and service it if detective.

Check the periphery of JK1401 from Pin (7) of IC1403 and service it if detective.

Are the video signals outputted to the specific output terminal?

Are the component video signals outputted to the VIDEO OUT terminal (JK1404)?

Are the luminance signals outputted to the S-OUT terminal (JK1401)?

Are the chroma signals outputted to the S-OUT terminal (JK1401)?

No

No

No

NoAre the composite video signals outputted to the VIDEO OUT terminal (JK1404)?

FLOW CHART NO.20Picture does not appear normally.

Set the disc on the disc tray, and playback.

Are the video signals outputted to each pin of CN1601 on the AV CBA?

Replace the DVD Main CBA Unit or DVD Mechanism.

Check the line between each pin of CN1601 and each pin of IC1402 or IC1403 on the AV CBA, and service it if detective.

CN1601 2PIN IC1403 3PIN S-Y(I)CN1601 10PIN IC1403 1PIN S-CCN1601 8PIN IC1402 3PIN S-Y(I/P)CN1601 6PIN IC1402 6PIN Pb/CbCN1601 4PIN IC1402 8PIN Pr/Cr

Are the video signals shown above inputted into each pin of IC1402 or IC1403?

Yes

No

No

CN1601 2PIN S-Y(I)CN1601 4PIN Pr/CrCN1601 6PIN Pb/CbCN1601 8PIN S-Y(I/P)CN1601 10PIN S-C

IC1403 3PIN S-Y(I)IC1403 1PIN S-CIC1402 3PIN S-Y(I/P)IC1402 6PIN Pb/CbIC1402 8PIN Pr/Cr

FLOW CHART NO.19Both functions of picture and sound do not operate normally.



No

YesNo improvement can be found. Original DVD Main CBA Unit is poor.

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FLOW CHART NO.21

Audio is not outputted normally.

Set the disc on the disc tray, and playback.

Are the analog audio signals outputted to each pin of CN1601 on AV CBA?

Is the "H" level mute signal outputted to CN1601 on AV CBA ?

CN1601 12PIN AUDIO(L)CN1601 14PIN AUDIO(R)

CN1601 13PIN AUDIO(L)-MUTECN1601 19PIN AUDIO(R)-MUTE

IC1201 1PIN AUDIO(L)IC1201 7PIN AUDIO(R)

IC1201 2PIN AUDIO(L)IC1201 6PIN AUDIO(R)



Replace IC1201.

Check the periphery between Pins(1,7) of IC1201 and JK1201, and service it if detective.

Check each line between each pin of CN1601 and each pin of IC1201 on AV CBA, and service it if detective.

CN1601 12PIN IC1201 2PIN AUDIO(L)CN1601 14PIN IC1201 6PIN AUDIO(R)

Are the analog audio signals inputted to each pin of IC1201.

Are the analog audio signals outputted to each pin of IC1201?

Are the audio signals outputted to the specific output terminal?

Are the audio signals outputted to the audioterminal (JK1201)?

Yes

Yes

Yes

Yes

No

No

No

No

No

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FLOW CHART NO.22

Audio is not outputted. (JK7101)

Set the disc (with 5.1ch Audio) on the disc tray, and playback.

Are the analog audio signals outputted to each pin of CN7102 on 5.1ch Amp CBA.

CN7102 15PIN FRONT(L)CN7102 13PIN FRONT(R)CN7102 11PIN SURROUND(L)CN7102 9PIN SURROUND(R)CN7102 7PIN CENTERCN7102 5PIN SUBWOOFER

IC7301 2, 6PIN FRONT(L/R)IC7401 2, 6PIN SURROUND(L/R)IC7501 2, 6PIN CENTER/SUBWOOFER

Replace the DVD Main CBA or DVD Mechanism.

Replace ICs (IC7301, IC7401 or IC7501).

Check each line between each pin of CN7102 and each pin of IC7301,IC7401 and IC7501 and service it if defective.

CN7102 15,13PIN IC7301 2,6PIN FRONT(L/R)CN7102 11,9PIN IC7401 2,6PIN SURROUND(L/R)CN7102 7,5PIN IC7501 2,6PIN CENTER/SUBWOOFER

Are the analog audio signals inputted to each pin of IC7301, IC7401 and IC7501.

Are the analog audio signals outputted to each pin of IC7301, IC7401 and IC7501.

IC7301 1,7PIN FRONT(L/R)IC7401 1,7PIN SURROUND(L/R)IC7501 1,7PIN CENTER/SUBWOOFER

Yes

Yes

No

No

No

Check each line and service it if defective.No

Replace the DVD Main CBA Unit.No

Yes

Do the mute signals of CN7102 on 5.1ch Amp CBA become to "H" level?

FRONT(L) CN7102 14PINFRONT(R) CN7102 12PINSURROUND(L) CN7102 10PINSURROUND(R) CN7102 8PINCENTER CN7102 6PINSUBWOOFER CN7102 4PIN

Yes

Is the analog audio signal of each line outputted to each terminal of JK7101 (as shown below) ?

IC7301 1PIN JK7101 FRONT(L) IC7301 7PIN JK7101 FRONT(R)IC7401 1PIN JK7101 SURROUND(L)IC7401 7PIN JK7101 SURROUND(R)IC7501 1PIN JK7101 CENTER IC7501 7PIN JK7101 SUBWOOFER

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23


BLOCK DIAGRAMSSystem Control / Servo Block Diagram

CN

401

CN

1001

127 8 9 10 11

RE

MO

TE

SE

NS

OR

RM

2001

JK35

01

1G 7G~

23 17

~

a/K

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1b/

KE

Y-2

c/K

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Y-4 e

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SE

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PA

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IX

CN

2001

CN

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Y-1

66

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Y-2

44

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Y-3

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Y-4

77

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86

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24


Digital Signal Process Block Diagram

C16

D18

A17

B15

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172

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171

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2

170

SD

3

169

SD

4

168

SD

5

167

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6

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D3

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D5

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HD

192

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+10

V11

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5V2,

3,4,

10P

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+3.

3V21

PW

RC

ON

Q10

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V

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Aut

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all

com

pone

nts

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uit a

re n

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befo

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ou c

onne

ct th

e A

C p

lug

to th

e A

C p

ower

sup

ply.

Oth

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ise

it m

ay c

ause

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NO

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:T

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hot G

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"Ce

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or c

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t fire

haz

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repl

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only

with

the

sam

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TE

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: P

our

une

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A

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29


SCHEMATIC DIAGRAMS / CBAS AND TEST POINTS

Standard Notes

WARNING

Many electrical and mechanical parts in this chassis have special characteristics. These characteristics often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts that have these special safety characteristics are identified in this manual and its supplements; electrical components having such features are identified by the mark # in the schematic diagram and the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock, fire, or other hazards.

Notes:1. Do not use the part number shown on these

drawings for ordering. The correct part number is shown in the parts list, and may be slightly different or amended since these drawings were prepared.

2. All resistance values are indicated in ohms (K = 103, M = 106).

3. Resistor wattages are 1/4W or 1/6W unless otherwise specified.

4. All capacitance values are indicated in F(P = 10-6 F).

5. All voltages are DC voltages unless otherwise specified.

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LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES:

1. CAUTION:

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE. ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQES D'INCELE N'UTILISER QUE DES FUSIBLE DE MME TYPE. RISK OF FIRE-REPLACE FUSE AS MARKED.

2. CAUTION:

Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F1001) is blown, first check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.

3. Note:1. Do not use the part number shown on the drawings for ordering. The correct part number is shown in the

parts list, and may be slightly different or amended since the drawings were prepared.

2. To maintain original function and reliability of repaired units, use only original replacement parts which are listed with their part numbers in the parts list section of the service manual.

4. Voltage indications for PLAY and STOP mode on the schematics are as shown below:

5. How to read converged lines

6. Test Point Information

A V

F

This symbol means fast operating fuse.Ce symbole represente un fusible a fusion rapide.

2 31 5.0(2.5)

5.0

The same voltage for both PLAY & STOP modes

Indicates that the voltage is not consistent here.

PLAY modeSTOP mode

(Unit: Volt)

3

2

1

A B C D

1-B1

1-D3

AREA D3

AREA B1

1-D3

Distinction AreaLine Number (1 to 3 digits)

Examples:1. "1-D3" means that line number "1" goes to the line number "1" of the area "D3". 2. "1-B1" means that line number "1" goes to the line number "1" of the area "B1".

: Indicates a test point with a jumper wire across a hole in the PCB.

: Used to indicate a test point with a component lead on foil side.

: Used to indicate a test point with no test pin.

: Used to indicate a test point with a test pin.

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31


DVD Main 1/7 Schematic Diagram

1 NOTE: Either IC461 or IC462 is used for DVD MAIN CBA UNIT.

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DVD Main 2/7 Schematic Diagram

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33


IC101 Voltage Chart

PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY STOP PIN.NO PLAY

1 3.4 3.4 33 ~ ~ 65 ----- ----- 97 0.1

2 0 0 34 0 0 66 3.4 3.4 98 0.1

3 3.5 3.5 35 3.5 3.5 67 3.4 3.4 99 0.1

4 ----- ----- 36 ~ ~ 68 0 0 100 0.1

5 3.4 3.4 37 ~ ~ 69 3.5 3.5 101 0.1

6 3.4 3.4 38 ~ ~ 70 4.1 4.1 102 3.5

7 3.4 3.4 39 ~ ~ 71 3.4 3.4 103 0.9

8 3.5 3.5 40 ~

Documents

SERVICE MANUAL Ver. 2 MODEL DVD-1930CI DVD … MANUAL DVD AUDIO-VIDEO / SUPER AUDIO CD PLAYER MODEL DVD-1930CI DVD-757 TOKYO, JAPAN Denon Brand Company, D&M Holdings Inc. X0306V.02