Panasonic SAVK-725-DEE Service manual

*4,*7

*5,*7

DVD Stereo System

SA-VK725DEE

Colour

(S)... Silver Type

ORDER NO. MD0507277C3

Specifications

AMPLIFIER SECTION

RMS Output Power: Dolby Digital Mode

Main

70 W per channel (6 Ω), 1 kHz, 10% THD

Surround Ch

55 W per channel (6 Ω), 1 kHz, 10% THD

Center Ch

70 W per channel (6 Ω), 1 kHz, 10% THD

Total RMS Dolby Digital mode power

320 W

FM/AM TUNER, TERMINALS SECTION

Preset station FM 15 stations

AM 15 stations

Frequency Modulation (FM)

Frequency range 87.50 - 108.00 MHz (50 kHz step)

Sensitivity 2.5 µV (IHF)

S/N 26 dB 2.2 µV

ntenna terminals 75 Ω (unbalanced)

mplitude Modulation (AM)

Frequency range 522 - 1629 kHz (9 kHz step)

M Sensitivity S/N 20 dB at 999 kHz

560 µV/m

udio performance (Amplifier)

Input sensitivity/Input impedance

ux 250 mV, 20 kΩ

Phone jack

Terminal Stereo, 3.5 mm jack

Mic jack

Sensitivity 0.7 mV, 600 Ω

Terminal Mono, 6.3 mm jack (2 system)

CASSETTE DECK SECTION

Type Auto-Reverse

Track system 4-Track, 2 Channel

Head Record/Playback Solid permalloy head

Erasure Double gap ferrite head

Motor DC servo moto

Recording System AC Bias 100 kHz

Erasing System AC Erase 100 kHz

Tape Speed 4.8 cm/s

Overall frequency response (+3, -6 dB) at DECK OUT

Normal 35 Hz - 14 kHz

S/N Ratio 50 dB (A weighted)

Wow and Flutter 0.18 % (WRMS)

Fast Forward and Rewind Time Approx. 120 seconds with

C-60 cassette tape

DISC SECTION

Disc played [8 cm or 12 cm]

(1) DVD (DVD-Video, DVD-Audio, DivX*6,*7)

(2) DVD-RAM (DVD-VR, JPEG

, MPEG4

,DivX*6,*7)

*2,*7

*3,*

SA-VK725DEE

(3) DVD-R (DVD-Video, DivX*6,*7)

(4) DVD-RW (DVD-Video, DVD-VR, DivX*6,*7)

+ R/RW (Video)

(5) CD,CD-R/RW [CD-DA, Video CD, SVCD*1, MP3

, JPEG

*4,*7

, MPEG4

* 5,*7

,DivX*6,*7, HighMAT Level 2 (Audio and

, WMA

Image)]

Conforming to IEC62107

MPEG-1 Layer 3, MPEG-2 Layer 3

Windows Media Audio Ver.9.0. L3

Not compatible with Multiple Bit Rate (MBR)

Exif Ver 2.1 JPEG Baseline files

Picture resolution: between 160 x 120 and 6144 x 4096 pixels (Sub sampling is 4:2:2 or 4:2:0)

MPEG4 data recorded with Panasonic SD multi cameras or DVD

video recorders.

Conforming to SD VIDEO specifications (ASF standard)/ MPEG4 (Simple Profile) video system/G.726 audio system

DivX 3.11, 4.x, 5.x

GMC (Global Motion Compensation) is not supported

The total combined maximum number of recognizable audio, picture and video contents and groups: 4000 audio ,picture and video contents and 400 groups.

Pick up

Wavelength

CD 785 nm

DVD 662 nm

udio output (Disc)

Number of channels 5.1ch(FL,FR,C,SL,SR,SW)

udio performance (measurement at: Line out terminal)

Frequency response

CD-Audio 4Hzto20kHz(+1dB,-2dB)

VIDEO SECT ION

Video system

Signal system PAL625/50, PAL525/60, NTSC

Composite video output

Output level 1 Vp-p (75 Ω )

Terminal Pinjack(1system)

S-video output

Y output level 1 Vp-p (75 Ω )

C output level 0.3Vp-p(75Ω)(PAL)

0.286 Vp-p (75 Ω)(NTSC)

Terminal S terminal (1 system)

Component video output

[NTSC: 525 (480)p/525 (480)i, PAL: 625 (576)p/625 (576)i]

Y output level 1 Vp-p (75 Ω )

PBoutput level 0.7Vp-p(75Ω)

PRoutput level 0.7Vp-p(75Ω)

Terminal

Pin jack (Y: green, PB:blue,PR:red)(1system)

GENERAL

Power supply

AC 110 to 127V/220 to 240 V, 50/60Hz

Power consumption 300 W

Power consumption in standby mode:

0.8 W (approximate)

Dimensions (W x H x D) 250 x 330 x 348 mm

Mass 8.8 kg

Operating temperature range +5°C to +35°C

Operating humidity range 5% to 90% RH (no condensation)

SYSTEM

SC-VK725D (EE-S) Music System: SA-VK725D (EE-S)

Front Speakers: SB-VK72 (GC-S)

Satelite Speakers: SB-PT72 (EE-S)

Notes:

1. Specifications are subject to change without notice. Mass and dimensions are approximate.

2. Total harmonic distortion is measured by the digital spectrum analyzer.

SA-VK725DEE

CONTENTS

Page Page

1 Before Repair and Adjustment 4

2 Protection Circuitry

3 Safety Precautions

3.1. General Guidelines

4 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

5 Handling the Lead-free Solder

5.1. About lead free solder (PbF)

6 Precaution of Laser Diode

7 Cautions to be taken when handling Optical Pickup

7.1. Handling Optical Pickup

7.2. Replacing Precautions for Optical Pickup Unit

7.3. Grounding for Preventing Electrostatic Destruction

8 Accessorie s

9 Operation Procedures

10 Disc information

11 About HighMAT

11.1. What 痴 HighMAT?

11.2. Why take advantage of HighMAT?

11.3. Benefits of HighMAT?

12 Optical Pickup Self-Diagnosis and Replacement Procedure

12.1. Optical Pickup Breakdown diagnosis

13 Self-Diagnosis Function

13.1. Entering into Self-Diagnostic Mode

13.2. Automatic Displayed Error Codes

13.3. Memorized Error Codes

13.4. Service Mode Table 1

13.5. DVD/CD Self-Diagnosis Error Code Description

13.6. Mode Table 2

13.7. CR16 Mechanism Ageing Mode

13.8. Operation Lock Function

13.9. Things to Do After Repair

14 Cautions To Be Taken During Servicing

14.1. Recovery after the dvd player is repaired

14.2. DVD Player Firmware Version Upgrade Process

14.3. Firmware Version Upgrade Process by Using Disc and

Recovery Process

14.4. Using Recovery Disc

14.5. Total Usage Time Display

14.6. After replacement of DVD Module

15 Disassembly and Assembly of Main Component

15.1. Disassembly steps

15.2. Disassembly flow chart

15.3. Disassembly of Top Cabinet

15.4. Disassembly of Rear Panel

15.5. Disassembly of DVD Changer Unit

15.6. Disassembly of Main P.C.B.

15.7. Disassembly of Power Amp P.C.B.

15.8. Disassembly of Power P.C.B.

15.9. Disassembly of Transformer P.C.B.

15.10. Disassembly of Front Panel Unit

15.11. Disassembly for Mic P.C.B. & Panel P.C.B.

15.12. Disassembly of Deck Mechanism Unit

15.13. Replacement for Deck P.C.B.

15.14. Replacement for Traverse Deck

15.15. Replacement for Optical Pickup Unit (DVD mechanism)

15.16. Procedure for removing CD loading mechanism

15.17. CR16 mechanism disassemb ly procedure

15.18. CR16 mechanism assembly procedure

15.19. Disassembly for Traverse Unit

15.20. Replacement for cassette lid

15.21. Rectification for tape jam problem

16 Checking for major P.C.Bs

16.1. Checking of Main P.C.B.

16.2. Checking of Transformer P.C.B.

16.3. Checking of Panel, Deck & Deck Mechanism P.C.B.

16.4. Checking of Power P.C.B.

17 Measurements and Adjustments

17.1. Cassette Deck Section

17.2. Tuner Section

17.3. Alignment Points

18 Block Diagram

19 Voltage Measurement

20 Schematic Diagram

20.1. Optical Pickup Unit Circuit

20.2. (A) DVD Module Circuit

20.3. (B) Main (Tuner) Circuit

20.4. (B) Main Circuit

20.5. (C) Panel Circuit & (D) Mic Circuit

20.6. (E) Deck Circuit & (F) Deck Mechanism Circuit

20.7. (G) Power Circuit

20.8. (H) Power Amp Circuit

20.9. (I) Transformer Circuit

20.10. (J) CD Loading Circuit

21 Printed Circuit Board

21.1. (A) DVD Module P.C.B. (Side: A & B )

21.2. (B) Main P.C.B.

21.3. (C) Panel P.C.B.

21.4. (D) Mic P.C.B. & (K) Tuner Pack P.C.B.

21.5. (E) Deck P.C.B. & (F) Deck Mechanism P.C.B.

21.6. (G) Power P.C.B. & (H) Power Amp P.C.B.

21.7. (I) Transformer P.C.B.

21.8. (J) CD Loading P.C.B.

22 Wiring Connection Diagram

23 Illustration of ICs, Transistors and Diodes

24 Terminal Function of IC

24.1. IC2818 (C2CBJG000653) System Microprocessor

25 Parts Location and Replacement Parts List

25.1. Deck Mechanism (RAA3413-S)

25.2. DVD Loading Mechanism

25.3. Cabinet

25.4. Electrical Parts List

100

102

103

104

105

106

108

110

112

113

114

116

117

118

120

122

124

125

128

131

134

SA-VK725DEE

25.5. Packing Materials & Accessories Parts List 147 25.6. Packaging 148

1 Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C5815, C5818, C9513, C9533, C9534, C9816 and C9817 through a 10Ω, 5W resistor to ground.

DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.

After repairs are completed, restore power gradually using a variac, to avoid overcurrent.

Current consumption at AC 230V at 50Hz in NO SIGNAL (vol. min, at CD mode) should be ~500mA .

2 Protection Circuitry

The protection circuitry may have operated if either of the following conditions are noticed:

No sound is heard when the power is turned on.

Sound stops during a performance.

The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are

“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.

If this occurs, follow the procedure outlines below:

1. Turn off the power.

2. Determine the cause of the problem and correct it.

3. Turn on the power once again after one minute.

Note :

When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.

3 Safety Precautions

3.1. General Guidelines

1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.

2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.

3.1.1. Leakage Current Cold Check

1. Unplug the AC cord and connect a jumper between the two prongs on the plug.

2. Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be between 1MΩ and 5.2MΩ.

When the exposed metal does not have a return path to the chassis, the reading must be

Figure 1

3.1.2. Leakage Current Hot Check

(See Figure 1)

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

SA-VK725DEE

2. Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15µF capacitor, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1.

3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.

4. Check each exposed metallic part, and measure the voltage at each point.

5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.

6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.

SA-VK725DEE

4 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the inciden ce of component damage caused by electro static discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminium foil, to prevent electrostatic charge build up or exposu re of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can generate electrical charge to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

Caution

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize body motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).

5 Handling the Lead-free Solder

5.1. About lead free solder (PbF)

Distinction of PbF P.C.B.:

P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B.

Caution:

· Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please use a high temperature soldering iron. In case of soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).

· Pb free solder will tend to splash when heated too high (about 1100°F/600°C).

· W hen soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the

soldering points with the Pb free solder until it melts enough.

SA-VK725DEE

6 Precaution of Laser Diode

Caution :

This product utilizes a laser diode with the unit turned "ON", invisible laser radiation is emitted from the pick up lens. Wavelength : 785 nm(CD)/662 nm(DVD) Maximum output radiation power from pick up : 100 µW/VDE

Laser radiation from pick up unit is safety level, but be sure the followings:

1. Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous.

2. Do not adjust the variable resistor on the pick up unit. It was already adjusted.

3. Do not look at the focus lens using optical instruments.

4. Recommend not to look at pick up lens for a long time.

CAUTION!

THIS PRODUCT UTILIZES A LASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

n Use of Caution Labels

SA-VK725DEE

7 Cautions to be taken when handling Optical Pickup

The laser diode used inside optical pickup could be destroyed due to static electricity as a potential difference is caused by electrostatic load discharged from clothes or human body. Handling the parts carefully to avoid electrostatic destruction during repair.

7.1. Handling Optical Pickup

1. Do not impact on optical pickup as the unit structurally uses an extremely precise technology.

2. Short-circuit the flexible cable of optical pickup remove from the circuit board using a short-circuit pin or clip in order to prevent laser diode from electrostatic destruction (Refer to Fig. 7.1 and Fig. 7.2)

3. Do not handle flexible cables forcibly as this may cause snapping. Handle the parts carefully (Refer to Fig. 7.1)

4. A new optical pickup is equipped with an anti-static flexible cable. After replacing and connecting to the flexible board, cut the anti-static flexible cable. (Refer to Fig. 7.1)

Fig. 7.1

7.2. Replacing Precautions for Optical Pickup Unit

DVD/CD Optical Pickup

The optical pickup by which part supply was carried out attaches the short clip to the flexible board for laser diode electrostatic discharge damage prevention. Please remove the short clip and be sure to check that the short land is open, before connecting. (Please remove solder, when the short land short-circuits.)

7.3. Grounding for Preventing Electrostatic Destruction

1. Human body grounding

Use the anti-static wrist strap to discharge the static electricity accumulated in your body. (Refer to Fig. 7.2)

2. Work place grounding

Place a conductive material (conductive sheet) or iron board where optical pickup is placed. (Refer to Fig. 7.2)

Note :

Keep your clothes away from optical pickup as wrist strap does not release the static electricity charged in clothes.

Fig. 7.2

8 Accessories

SA-VK725DEE

Remote control

AC cord

FM antenna

AM antenna

Video cable

Mic

SA-VK725DEE

9 Operation Procedures

SA-VK725DEE

10 Disc information

SA-VK725DEE

11 About HighMAT

11.1. What’s HighMAT?

Consumers worldwide are using PCs to create their own collections of music, photos and even video by burning them onto CDs. But how these collections can be experie nced across different devices can be confusing to navigate, time consum ing to access for a DVD player, and be incomplete in terms of music information available to the customer.

HighMAT offers a solution to this growing consumer problem. HighMAT dramatically improves the digital media experience on consumer electronic devices by delivering a simple, standardized approach that allows consumers who have created personal collections of digital music, photography and video on their PC to:

>> Create a HighMAT CD or DVD which can be easily played back on consum er electronics devices such as CD and DVD players, and car stereos.

>> Move digital media files (using recordable media such as CD-R and CD-RW) between the PC and various playback devices such as CD and DVD players.

A new standard for creating personal media on consumer electronic devices, HighMAT enable easier and more seamless interoperability between Windows PCs and devices designed for your living room, or the car.

11.2. Why take advantage of HighMAT?

A Problem Defined:Today, when consumers create their own digital audio, video or photo collections on CD-R or other physic al formats, there are numerous, inconsistent ways that devices read the data. For the consumer, the playback experience can be confusing:

SA-VK725DEE

A Solution Created: HighMAT delivers a better digital media access experience by creating a standard approach for PCs to structure digital media on various physical formats and for playback devices to read the data.

11.3. Benefits of HighMAT?

Conventional HighMAT

Even though DVD player is CD-R/RW compatible, the inconsistent ways that various DVD players can read the music or photos files often leads to a confusing and inconsistant playback experince.

HighMAT compatible products play content back with consistent interface. This includes products which are JPEG compatible products without HighMAT support.

SA-VK725DEE

HighMAT is now available for CD Burning and in Leading DVD PlayersHighMAT is a new technology that is now available in leading software and consumer electronic devices to dramatically improve the digital media experience when you create homemade CDsHighMAT delivers a simple, standardized way for PC software and consumer electronics devices to talk to each other and work better together.

When you create your homemade CDs with software that supports HighMAT CD burning, and then play them back on a DVD player that supports HighMAT, you get better, easier navigation. You get folders you can access with a single click of your DVD player´s remote control. You can view important information about your music like full song names, artist titles, album names and genre. And you can get faster startup on your home entertainment device.

To enjoy the benefits of HighMAT, all you need is software that supports HighMAT for CD burning of music or photos, as well as a home entertainment device like a DVD player that supports HighMAT for playback. Always look for the HighMAT logo on your software or home entertainment device to ensure it supports the HighMAT experience.

SA-VK725DEE

12 Optical Pickup Self-Diagnosis and Replacement

Procedure

12.1. Optical Pickup Breakdown diagnosis

This unit is equipped with the optical pickup self-diagnosis function and the tilt adjustment check function. Follow the procedure described below during repair in order to perform self-diagnosis and tilt adjustment effectively. Especially when “NO DISC” is displayed, be sure to apply the self-diagnosis function before replacing with an optical pickup. Replacement of optical pickup generally requires when the present value of laser drive exceed s 45 (DVD) or 45 (CD).

Note:

Start diagnosis within three minutes after turning on the power (as diagnosis fails when the unit becomes warm).

13 Self-Diagnosis Function

This unit is equipped with the self-diagnosis function, which display s an error when it occurs, for use during servicing.

13.1. Entering into Self-Diagnostic Mode

SA-VK725DEE

13.2. Automatic Displayed Error Codes

13.2.1. Automatic Display Function

For a power unit error, the code is automatically displayed.

F61: Automatically displayed on the LCD of the player.

13.2.2. Re-Display

· For F61 Display

−

− When the code, F61 is displayed, the power is automatically turned off.

− −

−

− The code, F61 is displayed for three seconds, and then the current time appears.

− −

−

− To retrieve the code, turn on the power button so that the code F61 appears, however, is switched to time display after three

− −

seconds, and the power is automatically turned off.

· For F76 Display

−

− The abnormalities is an output or the abnormalities in a power supply of POWER AMP IC.

− −

13.2.3. Description of Error Code

13.2.3.1. F61

· State, Condition

When the power is turned on, the unit is automatically turned off. The power does not turn on.

· Cause, Troubleshooting

Power circuit system failure and/or direct current flown to speaker terminal Identify the cause and replace with new parts.

13.3. Memorized Error Codes

13.3.1. Activating Self-Diagnosis Function and Displaying Method

1. Turn on the power.

2. Select DVD/CD function. With no DVD/CD inserted in the player, press and press the “0” button on the remote control for at least two seconds in order to display “DVD_F---”.

3. Press the

button. If a memorized error is detected, the result of self diagnosis is displayed. (Ex.: T H15)

and hold down the button for at least two seconds,

SA-VK725DEE

If several errors are detected, press the button to display each.

13.3.2. Re-Display

· Press the power button to turn off the power, and then turn on the power.

· The details of self diagnosis are stored in the unit memory.

To retrieve them, follow the procedure described the above, “Activating Self-Diagnosis Function and Displaying Method”.

13.4. Service Mode Table 1

Following modes are available with combinations of the pressed buttons on the player and on the remote controller unit.

Player Remote Controller Unit Usage

button

0 Error code display (Refer to the Item 13.5. DVD/CD Self-Diagnosis Error Code Description) 5 Tilt adjustment (Jitter) 6 Region number and broadcasting system check 8 Bulit-in program version check (Micro-P)

FUNCTIONS DVD laser drive current check

3 CD laser drive current check

PAUSE Writing of laser drive current value after replacement of optical pickup

(Do use this function only when optical pickup is replaced.) Initialization of the player (factory setting is restored.)

Used after replacement of micro-computer and its peripherals and printed circuit board.

13.5. DVD/CD Self-Diagnosis Error Code Description

Error Code State, Conditon Cause, Troublesh ooting

H15 The disc tray cannot be opened: it closes spontaneously. Disc tray open/close detection switch (S1001) failure. H16 The disc tray cannot be closed: it opens spontaneously.

Error Code Meaning Details

U. H. Error U11 Focus servo failure H01 Tray loading failure H02 Spindle servo failure (Spindle servo, DSC, SP motor, CLV servo failure) H03 Traverse motor failure H04 Tracking servo error H05 Seek timeout failure DSC system F500 DSC failure DSC stops due to servo failure.

F501 DSC not Ready failure Communication failure between DSC and system computer

F502 DSC Time out failure See F500. F503 DSC communication failure Communication failure (Result failure occurs after communication

F505 DSC Attention Error See F500. F506 Invalid media Disc is placed upside down; TOC is unreadable or invalid disc is

Disc Code F103 IIlegal highlight position Disc standard is possibly illegal when highlight is displayed. IIC Error F4FF Forced initialization failure (Time out) F880 Unsuitable task number When a message arrives from not existing task F890 A message is sent during AV task transmission During transmission of a message to AV task F891 Unable to transmit a message to AV task When transmission of a message to AV task starts F893 DVD Module problem Check for firmware version F894 EEPROM failure F895 Firmware compatibility problem Check for firm version for Main & DVD Module P.C.B. F897 Initialization is not done properly Follow proper steps for initialization & reset F8A0 Unsuitable message command When transmission of a message to AV task starts

(Check and replace)

(Startup, focus failure, etc.)

(No communication because DSC does not move)

command is transmitted .)

inserted.

13.6. Mode Table 2

Following modes are available with combinations of the pressed buttons on the player and on the remote controller unit.

SA-VK725DEE

Item Operational Condition

and Key Function

Jitter display While the player is

stopped and no disc is inserted, press and hold down the

button on the player and the number button, “5” on the remote controller unit.

Error code display While the player is

stopped and no disc is inserted, press and hold down the

button on the player and the number button, “0” on the remote controller unit.

Measurement of laser current electricity initialization value

While the player is stopped and no disc is inserted, press and hold down the

button on the player and the

button on the

remote controller unit.

Press “FL Display” button for next page

Details Display TO Exit Mode

Jitter display Measures and displays jitter. Measurement is repeated every second. Read error counter starts at 0 at the mode setting, and increased by one as data read fails at target block. A small defect is allowed to correct by retry. Any possibility is counted as one increment. Repetitive errors after retry increase by two levels or more.

Error code display Displays the latest error code stored in EEPROM.

Measurement of laser current electricity initialization value Memorizes each initialization value of DVD and CD in EEPROM.

J*1xxx/yyy zz (display1/display2)

: Jitter display mode

: Jitter measurement value

: Read error counter

: Focus driving value

Values are shown to one decimal place in the decimal digit. Focus driving value is displayed in the hexadecimal digit.

DVD_F---

*nn: Error history *--: Error number

LDO*1/xxx*2yyyy

(display1/display2)

: Laser current electricity

measurement mode

: DVD current electricity value

: CD current electricity value

Press the STOP button on the player.

Press the STOP button.

Automatically exits the mode after five seconds.

Measurement of DVD laser current electricity

ADSC internal RAM display

While the player is stopped and no disc is inserted, press and hold down the

button on the player and the FUNCTIONS button on the remote controller unit.

Press “FL Display” button for next page

While the player is stopped and no disc is inserted, press and hold down the

button on the player and the number button “1” or “2” on the remote controller unit.

Measurement of DVD laser current electricity Measures DVD laser current electricity and displays the result together with the initialization value stored in EEPROM. After measurement, DVD laser is lit till the power is turned off (or goes off when the primary power is turned off).

ADSC internal RAM display Reads and displays the RAM value inside ADSC. The address is renewed when the CLEAR key is pressed so that the values at eleven points appear.

Values are shown in the decimal digit. The above example indicates that the current electricity initialization value is 13mA at DVD laser and 32mA at CD laser when laser is turned on.

LDD*1/xxx*2yyyy

(display1/display2)

: DVD laser current electricity

measurement mode

: Current electricity initialization

value stored in EEPROM

: Present value of current

electricity

Values are shown in the decimal digit. The above example indicates that the current electricity initialization value is 12mA and its present value is 14mA.

FB0_0000

Values are shown in the hexadecimal digit. The above example indicates that ADSC value at the address, FB0h is 0000h.

Automatically exits the mode after five seconds.

Press the STOP button on the player.

SA-VK725DEE

Item Operational Condition

and Key Function

Measurement of CD laser current electricity

While the player is stopped and no disc is inserted, press and hold down the

button on the player and the number button “3” on the remote controller unit.

Press “FL Display” button for next page

User initialization While the player is

stopped and no disc is inserted, press and hold down the

button on the player and the number button on the remote controller unit.

Region display While the player is

stopped and no disc is inserted, press and hold down the

button on the player and the number button, “6” on the remote controller unit.

Firmware version display

While the player is stopped and no disc is inserted, press and hold down the

button on the player and the number button, “7” on the remote controller unit.

Details Display TO Exit Mode

Measurement of CD laser current electricity Measures CD laser current electricity and displays the result together with the initialization value stored in EEPROM. After measurement, CD laser is lit till the power is turned off (or goes off when the primary power is turned off).

LDC*1/xxx*2yyyy (display1/display2)

: CD laser current electricity

measurement mode

: Current electricity initialization

value stored in EEPROM

: Present value of current

electricity

Values are shown in the decimal digit. The above example indicates the current electricity initialization value is 28mA and its present value is 26mA when laser is turned on.

User initialization

“INIT” Automatically exits The user setting recovers the factory setting.

Region display [s rr zzz]

s : Panecon model type rr : Panecon release number

zzz: Syscon release number

Firmware version display rrr*1xx*2y*3zzz

: Panel computer release number

: System computer generation

: System computer model type

: System computer release

number

Automatically exits the mode after five seconds.

the mode after five seconds.

Automatically exits the mode after five seconds.

Press “FL Display” button for next page

Region and firmware display

While the player is stopped and no disc is inserted, press and hold down the

button on the player and the number button, “8” on the remote controller unit.

Laser use time While the player is

stopped and no disc is inserted, press and hold down the

button on the player and the

button on the

remote controller unit.

Press “FL Display” button for next page

Reset laser use time While the usage time 1 is

displayed, press and hold down the button on the player and the

button on the

remote controller unit.

Region and firmware version display x*1y*2z*3w

: Region number

: System computer generation

: System computer model type

: System computer release

number

Laser usage time Measures each for DVD and CD

T1_ _1234/5678 (display1/display2)

respectively.

The numbers in the left show usage time for DVD laser and those in the right for CD laser. The four-digit number is shown by the ten hours in the decimal digit. The number after 0000 is 9999.

Laser usage time reset Resets both for DVD and CD at once.

T1_ _0000/0000 (display1/display2)

Automatically exits the mode after five seconds.

SA-VK725DEE

Item Operational Condition

Spindle use time While the player is

Reset spindle use time

Communication error display

and Key Function

stopped and no disc is inserted, press and hold down the on the player and the

button on the

remote controller unit. While the usage time 2 is

displayed, press and hold down the button on the player and the remote controller unit.

While the player is stopped and no disc is inserted, press and hold down the on the player and the MENU button on the remote controller unit.

Press “FL Display” button for next page

button

button on the

button

Spindle motor usage time T2_00000

Usage time 2 reset Spindle motor usage time

Displays frequency of communication errors between system computer firm IC and mechanical computer IC during DVD module.

Details Display TO Exit Mode

Automatically exits

The four-digit number is shown by the ten hours in the decimal digit. The number after 00000 is 99999.

T2_ _00000 Automatically exits

ECC_ _ _ 00 Press the STOP or

the mode after five seconds.

Open button on the player.

13.7. CR16 Mechanism Ageing Mode

To perform the ageing mode:

1. Enter into Test mode.

2. Press [3] button on remote control. It enters into ageing mode. (see below for ageing process)

Ageing process:

1. Tray 1 open.

2. It waits for one second (Note: Do not put any disc into the tray.

3. Tray close.

4. TOC READ (Reading incomplete)

5. Tray 2 open & repeat step 1 to step 4. (Process repeat until Tray 5)

6. Tray check.

7. Whole process complete (Counter on FL increase by 1)

Note: To exit ageing mode, press [POWER] button. The unit will power down. Do not unplug the power cord until FL display shows “GOODBYE”. This is to avoid tray jam problem.

13.8. Operation Lock Function

13.8.1. Setting

· Operation Lock Function

1. With the DVD/CD/ Lock mode B.

[_LOCKED_] will be display ed for 3 seconds, and the current disc will begin playing.

2. Lock mode B primarily controls the selector and disc operations, and disena bles for the following keys.

Note:

OPEN/CLOSE

· Prohibiting operation of selector and disk

1. Select the DVD/CD/

2. Press and hold down the DVD/CD/ three seconds. (The message, “_LOCKED_” appears when the function is activated.)

Note:

The following buttons are invalid and the player displays “_LOCKED_” while the lock function mode is entered.

and POWER ON, and then press the [POWER] KEY on the remote control for 3 seconds to enter

button are invalid and the player displays “_LOCKED_” while the lock function mode is entered.

function.

button on the player and the power button on the remote controller unit for at least

SA-VK725DEE

13.9. Things to Do After Repair

Follow the procedure described below after repair.

1. While the power is on, press the

2. Press the power button to turn off the power.

3. Unplug the power cable.

Note:

It is prohibited to unplug the power cable while the tray is opened and to close the tray manually.

button to close the tray.

14 Cautions To Be Taken During Servicing

14.1. Recovery after the dvd player is repaired

· W hen Flash ROM or DVD Module P.C.B. is replaced, carry out the recovery processing to optimize the drive. Playback the

recovery disc to process the recovery automatically.

· Recovery disc (Product number=RFKZD03R005)

· Performing recovery

1. Load the recovery disc (Product number: RFKZD03R005) to the player and run it.

2. Recovery is performed automatically. When it is finished, a message appears on the screen.

3. Remove the recovery disc.

4. Turn off the power.

14.2. DVD Player Firmware Version Upgrade Process

Firmware of DVD player may upgrade to conform to improvement of its performance and quality includi ng operational range, playability of non-standardized discs, etc. The version upgrade disc contains the recovery function, and the recovery disc is not necessary.

Note:

Version upgrade process cannot be complete if the AC power is cut off due to power failure and other occasions during the process. If this occurs, replace FLASH ROM IC and restart version upgrade. Version upgrade disc number is informed when ordered.

14.3. Firmware Version Upgrade Process by Using Disc and Recovery Process

· Recovery process

· Firmware version upgrade process

Both of the above procedures automatically start when the recovery disc is replayed.General CD-R disc allows version upgrade process and recovery process, making version upgrade through disc simple. Recovery process: Optimization process of player after replacement of FLASH ROM, EEPROM, or module circuit board

Version upgrade process: Renewal of firmware for improvement of operational range and performance

14.4. Using Recovery Disc

14.4.1. Recovery Process

1. Insert the recovery disc (RFKZD03R005) to the player to replay.

2. The recovery process automatically starts, and a message of completion prompts on the screen.

3. Remove the disc.

4. Turn off the power.

14.4.2. Version Upgrade Process

1. Insert the recovery disc to the player to replay.

2. The version of player is automatically checked and prompts if necessary.

3. Select version upgrade process using the cursor keys on the remote controller unit. (Select YES or NO)

4. a. If YES is selected, the process starts.

b. If NO is selected, only the recovery process is applied .

5. a. When the version upgrade process is complete, a message of completion appears on the screen. Remove the disc.

b. Follow the instruction appearing on the screen, and remove the disc.

6. Turn off the power.

SA-VK725DEE

14.5. Total Usage Time Display

1. Details of Operation/Display

Keys for Operation: Laser usage time: While the player is stopped and no disc is inserted, press both the button on the remote controller unit. Spindle motor usage time: While the player is stopped and no disc is inserted, press both the the

To reset the usage time, while the usage time is displayed: Laser usage time: press both the Spindle motor usage time: press both the

2. Purpose of Use

To obtain reference data of laser and spindle motor systems during failure diagnosis. To check faulty parts during re-repair.

button on the remote controller unit.

button on the player and the button on the remote controller unit.

14.6. After replacement of DVD Module

Below steps is to be performed after changing of DVD Module

1. Press

2. FL will display “INITIALIZE”.

3. Press “STOP” & “ENTER” on remote control (For reset of unit)

4. FL will display “DVD RESET” before change to TOC reading again.

5. Power off the set. Unplug AC cord & wait for few seconds.

6. Plug in AC cord & power on set.

on remote control while pressing “STOP” on main unit.

button on the player and the

button on the player and

SA-VK725DEE

15 Disassembly and Assembly of Main Component

“ATTENTION SERVICER”

Some chassis components may have sharp edges. Be careful when disassembling and servicing.

1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main

components.

2. For reassembly after operation checks or replacement, reverse the respective procedures.

Special reassembly procedures are described only when required.

3. Select items from the following index when checks or replacement are required.

4. Refer to the Parts No. on the page of “Parts Location and Replacement Parts List” (Section 25), if necessary.

15.1. Disassembly steps

· Disasse mbly of Top Cabinet

· Disasse mbly of Rear Panel

· Disasse mbly of DVD Changer Unit

· Disasse mbly of Main P.C.B.

· Disasse mbly of Power Amp P.C.B.

· Disasse mbly of Power P.C.B.

· Disasse mbly of Transformer P.C.B.

· Disasse mbly of Front Panel Unit

· Disasse mbly of Mic P.C.B. & Panel P.C.B.

· Disasse mbly of Deck Mechanism Unit

· Replacement for Deck P.C.B.

· Replacement for Traverse Deck

· Replacement for Optical Pickup Unit (DVD Mechanism)

· Procedure for removing CD loading mechanism

· CR16 mechanism disassembly procedure

· CR16 mechanism assembly procedure

· Disasse mbly for Traverse Unit

· Replacement for cassette lid ass’y

· Rectification for tape jam problem

SA-VK725DEE

15.2. Disassembly flow chart

The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing.

To assemble the unit, reverse the steps shown in the chart as below.

SA-VK725DEE

15.3. Disassembly of Top Cabinet

Step 1 Remove 3 screws at each side and 5 screws at rear

panel.

Step 2 Lift up both sides of the top cabine t, push the top cabinet towards the rear to remove the top cabinet.

15.4. Disassembly of Rear Panel

· Follow the (Step 1) - (Step 2) of Item 15.3 - Disassembly of Top Cabinet

Step 1 Remove 11 screws and disconnect cables CN2810 and CN2813 (Fan) at rear panel as shown.

15.5. Disassembly of DVD Changer Unit

· Follow the (Step 1) - (Step 2) of Item 15.3 - Disassembly of Top Cabinet

Step 1 Remove 1 screw at rear panel.

Step 2 Detach the FFC cables (CN2810 & CN2813).

SA-VK725DEE

Step 4 Lift the DVD changer unit upwards.

Step 3 Release the claws on both ends, and remove the DVD

changer unit.

Step 5 Remove 2 screws.

Step 6 Remove the DVD chassis.

Step 7 Lay the unit.

· For disassembly of DVD mechanism unit, please refer to

Section 15.16 of this manual.

SA-VK725DEE

15.6. Disassembly of Main P.C.B.

· Follow the (Step 1) - (Step 2) of Item 15.3 - Disassembly of Top Cabinet

· Follow the (Step 1) of Item 15.4 - Disassembly of Rear Panel

· Follow the (Step 1) - (Step 4) of Item 15.5 - Disassembly of DVD Changer Unit

Step 1 Disconnect FFC cables (CP6803, CN281 1, CN2808 and CN281 4).

Step 2 Lift up Main P.C.B. by disconnecting connectors CN2801 & CN280 2 as arrow shown above.

15.7. Disassembly of Power Amp P.C.B.

· Follow the (Step 1) - (Step 2) of Item 15.3 - Disassembly of Top Cabinet

· Follow the (Step 1) of Item 15.4 - Disassembly of Rear Panel

· Follow the (Step 1) - (Step 4) of Item 15.5 - Disassembly of DVD Changer Unit

· Follow the (Step 1) - (Step 2) of Item 15.6 - Disassembly of Main P.C.B.

Step 1 Remove the 2 screws at Power Amp P.C.B..

Step 3 Lift up the Power Amp P.C.B. to remove it.

Step 2 Remove the 2 screws at each Power Amp IC.

+ 118 hidden pages