Panasonic SA HT940 Diagram

ORDER NO.MD0603057C1

DVD Home Theater Sound System

SA-HT940P SA-HT940PC

Colour

(S).......................Silver Type

Specifications

lGeneral

Power Source:

Power consumption: 150 W

Dimensions (W×H×D): 430×70×439.2 mm

Mass:

lAmplifier section

RMS Output Power: Dolby Digital Mode

lTotal RMS Dolby Digital

mode Power:

At 1kHz and total harmonic of 10%

lFront: 190 W/ Channel (8Ω)

lCenter: 320 W/ Channel (4Ω)

lSurround: 90 W/ Channel (4Ω)

At 100Hz and total harmonic of 10%

lActive subwoofers: 320 W/ Channel (4Ω)

FTC Output Power: Dolby Digital Mode:

lTotal FTC Dolby Digital mode Power:

At 120Hz-20kHz and total harmonic of 1%

lFront: 120 W/ Channel (8Ω)

C 120V, 60Hz

(16-15/16”×2-3/4”×17-19/64”)

5 kg (11.02Ibs)

1200 W

860 W

lCenter: 250 W/ Channel (4Ω)

lSurround: 60 W/ Channel (4Ω)

At 45Hz-120Hz and total harmonic of 1%

lSubwoofer: 250 W/ Channel (4Ω)

lFM tuner section

Preset Memory::

Frequency Range:

Sensitivity: 2.5µV (IHF)

S/N 26dB

Antenna Terminals: 75Ω (unbalanced)

lAM tuner section

Frequency Range: 520-1710kHz (10kHz in step)

AM Sensitivity S/N 20dB at 1000kHz:

lPhone Jack:

Terminal: Stereo 3.5 mm (1/8”) jack

lFront M. Port:

FM 15 stations

AM/ MW 15 stations

87.9-107.9MHz

(200kHz in step)

87.5-108.0MHz

(100kHz in step)

2.2µV

560µV/m

SA-HT940P / SA-HT940 PC

Sensitivity: 100mV (4.7kΩ)

Terminal (Input): Stereo 3.5 mm (1/8”) jack

lDisc section

Discs played [8 cm (3”) or 12 cm (5”)]:

(1) DVD [DVD-Video, DVD-Audio]

(2) DVD-RAM [DVD-VR, MP3(*2,5), JPEG(*4,5)]

(3) DVD-R [DVD-Video, DVD-VR, MP3(*2,5), JPEG(*4,5)]

(4) DVD-R DL [DVD-Video, DVD-VR]

(5) DVD-RW [DVD-Video, DVD-VR, MP3(*2,5), JPEG(*4,5)]

(6) +R/ +RW [Video]

(7) +R DL [Video]

(8) CD, CD-R/ RW [CD-DA, Video-CD, SVCD(*1), MP3(*2,5),

WMA(*3,5), JPEG(*4,5), HighMAT Level 2 (Audio and Image)]

*1 Conforming to IEC62107

*2 MPEG-1 Layer 3, MPEG-2 Layer3

*3 Windows Media Audio Ver. 9.0 L3

lNot compatible with Multiple Bit Rate (MBR)

*4 Exif Ver 2.1 JPEG Baseline files

lPicture resolution: between 160 x 120 and 6144 x 4096 pixels (Sub sampling is 4:0:0, 4:2:0, 4:2:2 or 4:4:4). Extremely long and narrow pictures may not be displayed.

*5 The total combined maximum number of recognizable audio

and picture contents and groups: 4000 audio and picture contents and 400 groups.

Pick up:

Wavelength:

lCD: 785nm

lDVD: 662nm

Laser power:

lCD/ DVD: (P) CLASS I/ CLASS II

lCD/ DVD: (PC) CLASS 1M/ CLASS 1

Audio output (DISC):

Number of channels:

Audio performance:

Frequency response:

DVD (linear audio): 4 Hz-22 kHz (48 kHz sampling)

DVD-Audio: 4 Hz-88 kHz (192 kHz

CD-Audio:

S/N ratio:

CD-Audio: 105 dB

Dynamic range:

DVD (linear audio): 95 dB

CD-Audio: 95 dB

Total harmonic distortion:

CD-Audio: 0.005 %

lVideo section

ideo system:

Signal system: NTSC

Composite video output:

Output level: 1 Vp-p (75 Ω )

Terminal: Pin jack (1 system)

5.1 ch (FL, FR, C, SL, SR, SW)

4 Hz-44 kHz (96 kHz sampling)

sampling)

4 Hz-20 kHz

S-video output:

output level: 1 Vp-p (75 Ω)

C output level: NTSC; 0.286 Vp-p (75 Ω)

Terminal S terminal (1 system)

Component video output (480p/480i):

output level: 1 Vp-p (75 Ω)

PBoutput level: 0.7 Vp-p (75 Ω )

PRoutput level: 0.7 Vp-p (75 Ω )

Terminal: Pin jack (Y: green, PB: blue,

: red) (1 system)

HDMI AV output:

19 pin type A connector , HDMI Ver.1.2a (EDID Ver.1.3)

Power consumption in standby mode:

approx 0.4W

Note:

1. Specifications are subject to change without notice.

Mass and dimensions are approximate.

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

Solder:

This model uses lead free solder (PbF).

Mechanism:

This model uses RC1 (Rotary tray) mechanism.

Refer to the original service manual for *1, *2, *3, *4.

SA-HT940P / SA-HT940 PC

CONTENTS

Page Page

1 Safety Precautions 5

1.1. GENERAL GUIDELINES

1.2. Before Repair and Adjustment

1.3. Protection Circuitry

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

3 Precaution of Laser Diode

4 About Lead Free Solder (PbF)

5 Handling Precautions for Traverse Unit

5.1. Cautions to Be Taken in Handling the Optical Pickup Unit

5.2. Grounding for electrostatic breakdown prevention

6 Accessories

7 Operation Procedures

7.1. Remote Control Keys Operation

7.2. Main Unit Keys Operation

7.3. Disc Information

8 New Features

8.1. Using of Receiver Unit (SH-FX60 / SH-FX80)

8.2. About HDMI

9 Self-Diagnosis and special mode setting

9.1. Service Mode Summary Table

9.2. Service Mode Table 1

9.3. DVD Self Diagnostic Function-Error Code

9.4. Sales Demonstration Lock Function 29

9.5. Service Precautions

10 Assembling and Disassemb ling

10.1. Disassembly Flow Chart

10.2. Main Components and P.C.B. Locations

10.3. Disassembling the Top Cabinet

10.4. Disassembling the Front Panel Assembly

10.5. Disassembling the Tray Assembly

10.6. Disassembling the Rear Panel

10.7. Disassembling the Mechanism Base Assembly

10.8. Disassembling the FL & Head phone P.C.B.

10.9. Disassembling the HDMI Module P.C.B.

10.10. Disassembling the Regulator P.C.B.

10.11. Disassembling the Main P.C.B.

10.12. Disassembling the AC-Inlet, Power & Sub Power P.C.B

10.13. Disassembly of Digital Amp IC

10.14. Disassembly of Regulator IC

10.15. Disassembly of Switch Regulator IC (IC5701)

10.16. Disassembly of the Tray Base Guide (L) and Tray Base

Guide (R)

10.17. Disassembly of the Rotary Tray

10.18. Disassembly of the Traverse Unit

10.19. Assembly of Tray Assembly

SA-HT940P / SA-HT940 PC

11 Service Fixture and Tools 43

12 Service Positions

12.1. Checking & Repair Main P.C.B., Power P.C.B., HDMI

Module P.C.B., FL and Head phone P.C.B.

13 Measurements and Adjustments

13.1. Service Tools and Equipment

13.2. Important points in adjustment

13.3. Storing and handling of test discs

13.4. Optical adjustment

13.5. Abbreviations

14 Voltage and Waveform Chart

14.1. HDMI Module P.C.B.

14.2. Main P.C.B.

14.3. Power P.C.B.

14.4. FL P.C.B.

14.5. Loading Motor P.C.B., Tray Motor P.C.B., Sensor P.C.B. &

Regulator P.C.B.

14.6. Waveform Chart

15 Illustration of IC's, Transistors and Diodes

16 Wiring Connection Diagram

17 Block Diagram

18 Schematic Diagram (Notes)

19 Schematic Diagram

19.1. (A) HDMI Module Circuit

19.2. (B) Main Circuit

19.3. (C) Power, AC-inlet and Sub power Circuit

19.4. (C) FL and Headphone Circuit

19.5. (D) Loading Motor, Tray Motor, Sensor and Regulator

Circuit

20 Printed Circuit Board

20.1. (A) HDMI Module P.C.B.

20.2. (B) Main P.C.B., AC-Inlet P.C.B. & Sub Power P.C.B

20.3. (C) Power P.C.B.

20.4. (E) FL, Headphone, Loading Motor, Tray Motor, Sensor &

Regulator P.C.B.

21 Basic Troubleshooting Guide

21.1. Basic Troubleshooting Guide for Traverse Unit (HDMI

Module P.C.B)

21.2. Basic Troubleshooting Guide for HDMI AV output

22 Overall Block Diagram for HT940

22.1. HT940 DVD Unit Block Diagram

22.2. HT940 Block Diagram (Analog Signal)

22.3. HT940 Block Diagram (Analog Signal)

22.4. HT940 Power Supply Block Diagram

22.5. HT940 Power Block Diagram (SMPS)

23 Terminal Function of ICs

23.1. IC2001 (MN101C49GHH): Operation CPU

24 Exploded Views

24.1. Cabinet Parts Location

24.2. Packaging

25 Replacement Parts List

25.1. Component Parts List

100

101

SA-HT940P / SA-HT940 PC

1 Safety Precautions

1.1. 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, carry out the following leakage current checks to prevent the customer from being exposed to shock hazards.

1.1.1. 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

1.1.2. 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.

2. Connect a 1.5kΩ , 10 watts resistor, in parallel with a 0.15µF capacitors, 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 outside 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.

1.2. Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C5736, C5737, C5741, C5742 through a 10 Ω, 10 W 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 120 V, 60 Hz in NO SIGNAL mode volume minimal should be ~ 900 mA.

SA-HT940P / SA-HT940 PC

1.2.1. Caution for fuse replacement

1.3. 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 impeda nce 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.

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static 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 incidence of component damage caused by electro static discharge (ESD).

1. Immediately before handling any semiconductor component or semiconducto r-equipped assembly, drain off any ESD on your body by touchin g 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 aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

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

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

5. Do not use freon-propelle d chemicals. These can generate electrical charges sufficie nt 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, aluminum 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 bodily 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).

SA-HT940P / SA-HT940 PC

3 Precaution of Laser Diode

CAUTION:

This unit utilizes a class 1 laser.

Invisible laser radiation is emitted from the optical pickup lens.

Wavelength: 662nm(DVD)/785nm(CD).

Maximum output radiation power from pickup: 100µW/VDE

When the unit is turned on:

1. Do not look directly into the pick up lens.

2. Do not use optical instruments to look at the pick up lens.

3. Do not adjust the preset variable resistor on the pickup lens.

4. Do not disassemble the optical pick up unit.

5. If the optical pick up is replaced, use the manufacturer’s specified replacement pick up only.

6. Use of control or adjustments or performance of procedures other than those specified herein may result in hazardous

radiation exposure.

4 About Lead Free Solder (PbF)

Distinction of PbF PCB: PCBs (manufacture d) using lead free solder will have a PbF stamp on the PCB.

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 the 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).

When 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-HT940P / SA-HT940 PC

5 Handling Precautions for Traverse Unit

The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be taken avoid caution to electrostatic breakdown when servicing and handling the laser diode.

5.1. Cautions to Be Taken in Handling the Optical Pickup Unit

The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body. Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode.

1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure.

2. To prevent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed should be short-circuited with a short pin or a clip.

3. The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the flexible cable.

4. The antistatic FPC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexible cable, cut off the antistatic FPC.

5.2. Grounding for electrostatic breakdown prevention

Some devices such as the DVD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electricity in the working environment. Proceed servicing works under the working environment where grounding works is completed.

5.2.1. Worktable grounding

1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet.

5.2.2. Human body grounding

1. Use the anti-static wrist strap to discharge the static electricity form your body.

SA-HT940P / SA-HT940 PC

6 Accessories

Remote control

AM loop antenna

FM indoor antenna

SA-HT940P / SA-HT940 PC

AC cord

Speaker cable

Screw

Video Cable

Speaker label

SA-HT940P / SA-HT940 PC

7 Operation Procedures

7.1. Remote Control Keys Operation

Television operations

Turn the unit on/off

Select the source

DVD/CD, FM/AM, TV/AUX/

FRONT MUSIC P./REAR MUSIC P.

Select disc's title numbers etc./Enter numbers

Select the disc or show disc information

Select preset radio stations

Basic operations for play

Enhance the surround sound

Start up and play a disc automatically / Control both the home theater system and the television

Show a disc top menu or program list

Show a disc menu or play list

VIDEOTV

VOLUME

DVD

EXT-INFM

AUX

213

DISC

SKIP

STOP

SRD ENH

MENU RETURN

PLAY LIST

CANCEL

WOOFER

SUB

LEVEL

SLEEP

SETUP

PLAY

ZOOM

TEST

SFC

PAUSE

MODE

ENTER

REPEAT

VOLUME

SLOW SEARCH

PLAY

SURROUND

MODE

H.BASS

DISPLAY

C.FOCUS

MUTING

SELECT

MUSIC

Change the television's video input mode

Adjust the television volume

Select television channels

Adjust the volume of the main unit

Equalizing the sound Frame-by-frame/Select or register menu

items on the television screen

Show on-screen menu

Return to previous screen

CANCEL PLAY MODE REPEAT

SUB WOOFER

LEVEL

SLEEP FL DISPLAY

SFC

ZOOM

CD MODE

H.BASS

C.FOCUS

SETUP

TEST

CH SELECT

MUTING

7.2. Main Unit Keys Operation

SA-HT940P / SA-HT940 PC

Standby/on switch [POWER

/I]

Press to switch the unit from on to standby mode or vice versa. In standby mode, the unit is still consuming a small amount of power.

MUSIC PORT

Connect an external device

SURROUND MUSIC

Equalizing the sound

POWER MUSIC SURROUND

PORT

12345

MUSIC

5 DISC SELECTOR

Select the disc tray

TUNE MODE FM MODE

Stop playing/Select the tuning mode Adjust the FM reception condition

MEMORY

Play discs/Memorize the receiving radio stations

Skip or slow-search play/

/ TUNING

Select the radio stations

Display

TUNINGTUNING

MEMORYMEMORY

TUNE MODETUNE MODE

FM MODEFM MODE

OPEN/CLOSE

Open/Close the disc drawer

DISC EXCHANGE

Open the disc drawer to exchange the disc in the play position

OPEN/CLOSE

DISC DISC

SELECTOR

EXCHANGE SKIP

VOLUME

DISC SKIP

Skip to the next disc tray

Phones

onnect headphones

Jog LED

VOLUME

Turn up/down the volume

SELECTOR

DVD/CD FM AM AUXTV FRONT MUSIC P.

REAR MUSIC P.

Return to DVD/CD

SA-HT940P / SA-HT940 PC

7.3. Disc Information

7.3.1. Disc Playability (Media)

Discs that can be played

DVD-Video

—

DVD-Audio

DVD-V

DVD-A

DVD-V

Some DVD-Audio discs contain DVD-Video content.

Video CD

VCD

Including SVCD (Conforming to IEC62107).

DVD-RAM

DVD-VR

Recorded with devices using Version 1.1 of the Video Recording Format (a

standard), such as DVD video recorders, DVD video cameras, personal computers, etc.

JPEG

Recorded with Panasonic SD multi cameras or DVD video recorders using the

File System) Standard Version 1.0.

(DVD-Video) (DVD-Video)/

DVD-R

Discs recorded and finalized on DVD video recorders or DVD video cameras.

DVD-R (VR)

Discs reco

MP3

JPEG

unified video recording

DCF (Design rule for Camera

DVD-RW

rded and finalized on DVD video recorders or DVD video cameras using Version 1.1 or 1.2 (DVD-R only)

(VR)/

DVD-VR

DVD-V

of the Video Recording Format (a unified video recording standard).

DVD-RCD/

—

DVD-RW

Finalize the disc after recording.

+R +RW/

(Video) (Video)

Discs recorded and finalized

This unit can play CD-R/RW recorded with the above formats. Close the sessions or finalize recording.

This unit is compatible with HDCD, but does not support the Peak Extend function (a function which expands the

MP3

JPEG

DVD-V

on DVD video recorders or DVD video cameras.

JPEGMP3 VCDWMA

dynamic range of high-level signals). HDCD-encoded CDs sound better because they are encoded with 20 bits, as compared with 16 bits for all other CDs.

JPEGMP3WMA

This unit also plays HighMAT discs.

WMA

This unit does not support Multiple Bit Rate (MBR: an encoding process for audio content that produces an

audio file encoded at several different bit rates).

Includes one-sided, double-layered discs.

A process that allows play on compatible equipment.

It may not be possible to play all the abovementioned discs in some cases due to the type of disc or condition of the recording.

the disc after

Discs that cannot be played

DVD-RW version 1.0, DVD-ROM, CD-ROM, CDV, CD-G, SACD, DivX Video Discs and Photo CD, DVD-RAM that cannot be removed from their cartridge, 2.6-GB and 5.2-GB DVD-RAM, and “Chaoji VCD” available on the marke t inclu ding CVD, DVCD and SVCD that do not conform to IEC62107.

To clean discs

Wipe with a damp cloth and the n wipe dry.

Disc handling precautions

Do not attach labels or stickers to discs. This may cause disc warping, rendering it unusable. Do not write on the label side with a ball-point pen or other writing instrument. Do not use record cleaning sprays, benzine, thinner, liquids which prevent static electricity, or any other solvent. Do not use scratch-proof protectors or covers. Do not use the following discs: – Discs with exposed adhesive from removed stickers or labels

(rented discs, etc). – Discs that are badly warped or cracked. – Irregularly shaped discs, such as heart shapes.

Note about using a DualDisc

The digital audio content side of a DualDisc does not meet the technical specifications of the Compact Disc Digital Audio (CD-DA) format so playback may not be possible.

Do not use DualDisc in this unit as it may not possible to insert it correctly and it may get scratched or scraped.

Clean this unit with a soft, dry cloth.

Never use alcohol, paint thinner or benzine to clean this unit. Before using chemically treated cloth, carefully read the instructions that came with the cloth.

Do not use commercially available lens cleaners as they may

cause malfunction. Cleaning of the lens is generally not neccessary

although this depends on the operating environment.

Before moving the unit, ensure the disc trays are empty.

Failure to do so will risk severely damaging the disc and the unit.

7.3.2. File Extension Type Support (WMA/JPEG/MP3)

SA-HT940P / SA-HT940 PC

8 New Features

8.1. Using of Receiver Unit (SH-FX60 / SH-FX80)

· This model can be equipped with the digital transmitter and receiver to enjoy surround sound wirelessly..

8.1.1. Below is tips on using the digital receiver (SE-FX60)

8.1.2. Tips on using digital transmitter (SH-FX60T)

SA-HT940P / SA-HT940 PC

8.1.3. Below is tips on using digital receiver (SE-FX80)

8.1.4. Tips on using digital transmitter (SH-FX80T)

SA-HT940P / SA-HT940 PC

8.2. About HDMI

8.2.1. What is HDMI?

8.2.2. Advanced Digital Pictures

8.2.3. Advanced Digital Sound

SA-HT940P / SA-HT940 PC

8.2.4. Easy to Use

8.2.5. HDMI Compatible Products

SA-HT940P / SA-HT940 PC

9 Self-Diagnosis and special mode setting

9.1. Service Mode Summary Table

The service modes can be activated by pressing various button combination on the player and remote control unit.

Below is the summary of major checking:

Player buttons Remote control unit buttons Application Note

STOP 0 Error code display (Refer to the section,

5 Jitter checking (Refer to the section

6 Region display and mode (Refer to the section “9.2 7 Micro-processor firmware version check

FUNCTIONS DVD laser drive current check (Refer to the item “9.2.1.

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, FLASH ROM IC, EEPROM and HDMI module.

8 DVD HDMI Module firmware version check

ENTER DVD Module Reset

“9.3 DVD Self Diagnostic Function-Error Code”).

“13.4 Optical adjustment”).

Service Mode Table 1 for more information”).

Optical Pick-up SelfDiagnosis”).

9.2. Service Mode Table 1

By pressing various button combin ations on the player and remote control unit can activate the various service modes for checking.

Special Note:

Due to the limitations of the no. characters that can be shown on FL Display, the “FL Display” button on the remote control unit is used to show the following page. (Display 1 / Display 2).

SA-HT940P / SA-HT940 PC

Mode Name

Jitter check

Error code

check

Initial setting

of laser drive

current

DVD laser drive current measurement

ADSC internal

RAM data

check

CD laser drive

current

measurement

Item

Description

Jitter check Jitter rate is measured and displayed. Measurement is repeatedly done in the cycle of one second. Read error counter starts from zero upon mode setting. When target block data failed to be read out, the counter advances by one increment. When the failure is caused by minor error, it may be corrected when retried to enable successful reading. In this case, the counter advances by one. When the error persists even after retry, the counter may jump by two or more.

Error code check The latest error code stored in the EEPROM IC is displayed.

Initial setting of laser drive current. Initial current value for each of DVD laser and CD laser is separately saved in the EEPROM IC.

DVD laser drive current measurement

·DVD laser drive current is measured and the result is displayed together with the initial value stored in the EEPROM IC. After the measurement, DVD laser emission is kept on. It is turned off when POWER key is switched off. (It is also turned off when POWER button on the player is switched off.)

ADSC internal RAM data check

·ADSC internal RAM data is read out and displayed.

CD laser drive current measurement CD laser drive current is measured and the result is displayed together with the initial value stored in the EEPROM IC. After the measurement, CD laser emission is kept on. It is turned off when POWER key is switched off. (It is also turned off when POWER button on the player is switched off.)

FL Display

Jitter rate

Jitter check mode

Jitter rate is shown in decimal notation to one place of decimal. Focus drive value is shown in hexadecimal notation.

Error code (play_err) is expressed in the following convention. Error code = 0 x DAXX is expressed: DVDnn UXX Error code = 0 x DBXX is expressed: DVDnn HXX Error code = 0 x DXXX is expressed: DVDnn FXXX Error code = 0 x 0000 is expressed: DVDnn F--* "xx" denotes the error code

Laser current measurement mode

The value denotes the current in decimal notation. The above example shows the initial current is 34mA and 28mA for DVD laser and CD laser respectively when the laser is switched on.

DVD laser current measurement mode

The value denotes the current in decimal notation. The above example shows the initial current is 34mA and the measured value is 32mA.

Address

RAM data for specified address

The value is shown in hexadecimal notation. The above example shows the data in ADSC address OFAh is 6901h.

CD laser current measurement mode

The value denotes the current in decimal notation. The above example shows the initial current is 28mA and the measured value is 26mA.

Key Operation

Front Key

In STOP (no disc) mode, press STOP button on the player, and "5" button on

the remote control unit. Press STOP or OPEN button to exit. Press "FL Display" button on remote control unit for next page (FL Display).

In STOP (no disc) mode, press STOP button on the player, and "0" button on the remote control unit. * With pointing of cursor up and down on display. Cancelled automatically 5 seconds later. To exit, press [POWER] button on main unit or remote control.

In STOP (no disc) mode,

press STOP button on the

player, and PAUSE button

on the remote control unit.

Cancelled automatically

5 seconds later.

Press "FL Display" button on remote control unit for next page (FL Display) on values of laser drive current.

In STOP (no disc) mode, press STOP button on the player, and FUNCTIONS button on the remote control unit. Cancelled automatically 5 seconds later. Press "FL Display" button on remote control unit for next page (FL Display) on values of dvd drive current.

In STOP (no disc) mode, press STOP button on the player, and "1" button on the remote control unit.

Press STOP or PLAY button.

In STOP (no disc) mode, press STOP button on the player, and "3" button on the remote control unit. Cancelled automatically 5 seconds later. Press "FL Display" button on remote control unit for next page (FL Display).

SA-HT940P / SA-HT940 PC

Micro-processor firmware version display & EEPROM checksum display.

Initialization

Region display

DVD (HDMI) module firmware version display

Communication

error display

Item

DescriptionMode Name

Micro-processor firmware version display & EEPROM checksum display. EEPROM checksum is only available due to existence of EEPROM IC. (NO: NO EEPROM IC)

Initialization User settings are cancelled and player is initialized to factory setting.

Region display & mode

DVD (HDMI) module firmware version display is on the FL Display.

Displays frequency of communication errors between system control IC and mechanism control IC during DVD module.

Region No.

Region

FL Display

EXISTENCE OF EEPROM

N: NTSC / 6: PAL60

N: noPAL / P: PAL

Destination System controller generation

Panel controller jumper information

System controller version

Key Operation

Front Key

In STOP (no disc) mode, press STOP button on the player, and "7" button on the remote control unit. Cancelled automatically

5 seconds later. Press "FL Display" button on remote control unit for next page. (FL Display)

In STOP (no disc)

mode, press STOP button

on the player , and

10 button on the remote control unit.

In STOP (no disc) mode, press STOP button on the player, and "6" button on the remote control unit. Cancelled automatically 5 seconds later.

In STOP (no disc) mode, press STOP button on the player, and "8" button on the remote control unit. Cancelled automatically 5 seconds later.

In STOP (no disc) mode, press STOP button on the player, and "MENU" button on the remote control unit. Cancelled automatically 5 seconds later.

DVD Module

Reset

To reset DVD Module.

In initialisation mode, press STOP button on the player, and "ENTER" button on the remote control unit. Cancelled automatically 5 seconds later.

SA-HT940P / SA-HT940 PC

Mode Name

Timer 1 check

Timer 1 reset

Timer 2 check

Timer 2 reset

Item

Description

Timer 1 check Laser operation timer Operation time is measured separately for DVD laser and CD laser.

Press "FL Display" button for next page of FL Display

Timer 1 reset Laser operation timer Operation time of both DVD laser and CD laser is reset all at once.

Timer 2 check Spindle motor operation timer

Press "FL Display" button for next page of FL Display

Timer 2 reset Spindle motor operation timer

FL Display

Shown to the left is DVD laser time, and to the right CD laser time. Time is shown in 4 digits of decimal notation in a unit of 10 hours. "0000" will follow "9999".

T1–0000/0000 (display1/display2)

Time is shown in 5 digits of decimal notation in a unit of 10 hours. "00000" will follow "99999".

T2–00000

Key Operation

Front Key

In STOP (no disc) mode, press STOP button on the player, and " " button on the remote control unit. Cancelled automatically 5 seconds later.

While displaying Timer 1 data, press STOP button on the player, and " " button on the remote control unit. Cancelled automatically 5 seconds later.

In STOP (no disc) mode, press STOP button on the player, and " " button on the remote control unit. Cancelled automatically 5 seconds later.

While displaying Timer 2 data, press STOP button on the player, and " " button on the remote control unit. Cancelled automatically 5 seconds later.

9.2.1. Optical Pick-up Self-Diagnosis

The optical pickup self-diagnosis function and tilt adjustment check function have been included in this unit. When repairing, use the following procedure for effective self-diagnosis and tilt adjustment. Be sure to use the self-diagnosis function before replacing the optical pickup when "NO DISC" is displayed. As a guideline, you should replace the optical pickup when the value of the laser drive current is more than 55.

Note:

Press the power button to turn on the power, and check the value within three minutes before the unit warms up. (Otherwise, the result will be incorrect.)

SA-HT940P / SA-HT940 PC

9.3. DVD Self Diagnostic Function-Error Code

SA-HT940P / SA-HT940 PC

Error

Code

U11 Focus servo error Focus coil NG (OPU unit abnormal) Press [ n STOP] on main

H01 Tray loading error /

H02 Spindle servo error, DSC

H03 Traverse motor error (Traverse motor, IC8251) Press [ n STOP] on main

H04 Tracking servo error Tracking coil NG (OPU unit abmormal) Press [ n STOP] on main

H05 Seek timeout error Timeout of unit when seeking time is

H15 Disc tray open detection

Diagnosis Contents Description of error Automatic FL Display Remarks

unit for next error.

abnormality

disc motor error

switch (S9001) failure

The tray is not able to open Press [ n STOP] on main

(Spindle servo, DSC (IC8251) Spindle motor, CLV servo error)

reached

The disc tray cannot be opened: it closes spontaneously

unit for next error

Press [ n STOP] on main unit for next error

unit for next error

Press [ n STOP] on main unit for next error

H16 Disc tray close detection

switch (S9001) failure

F61 Power digital amp IC op &

DC output voltage abnormal.

F76 Power digital amp IC op &

DC output voltage abnormal.

F500 DSC error DSC (IC8251) stops in the occurrence of

F501 DSC not Ready error DSC-system computer communication

F502 DSC Time out error Similar as F500 Press [ n STOP] on main

F503 DSC communication

Failure

F504 Abnormal adjusting DSC

data slice offset

The disc tray cannot be closed: it opens spontaneously

Upon power-on PCONT=High, DCDET=Low

Speaker Jack shorted or amp circuit Press [ n STOP] on main

servo error (startup, focus error, etc.)

error (Communication failure caused by idling of DSC)

Communication error (result error occurred although communication command was sent)

Press [ n STOP] on main unit for next error

unit for next error

Press [ n STOP] on main unit for next error

unit for next error

Press [ n STOP] on main unit for next error

F505 DSC Attention error Similar as F500 Press [ n STOP] on main

F506 Invalid media Disc is flipped over, TOC unreadable,

incompatible disc media

unit for next error

Press [ n STOP] on main unit for next error

SA-HT940P / SA-HT940 PC

Error

Code

F600 Access failure to

F601 Indeterminate sector ID

Diagnosis Contents Description of error Automatic FL Display Remarks

management information caused by demodulation

Operation stopped because navigation data is not accessible caused by the demodulation defect

Press [ n STOP] on main unit for next error

error

requested

Operation stopped caused by the request to access abnormal ID data

Press [ n STOP] on main unit for next error

F602 Access failure to LEAD-IN

caused by demodulation

LEAD IN data unreadable Press [ n STOP] on main

unit for next error

error

F603 Access failure to KEYDET

caused by demodulation

Access failure to CSS data of disc Press [ n STOP] on main

unit for next error

error

F610 ODC abnormality No permission for command execution Press [ n STOP] on main

unit for next error

F611 No CRC OK for a specific

time (CD)

F612 No CRC OK for a specific

time (DVD)

F620 Laser safeguard: high

temperature condition

F621 Laser safeguard: circuit

failure condition

F103 Illegal highlight Position Big possibility of disc specification

Access failure to seek address in CD series

Press [ n STOP] on main unit for next error

Access failure to ID data in DVD series Press [ n STOP] on main

unit for next error

High temperature of the laser guide unit (OPU unit)

Circuitry failure of the laser guide unit (OPU unit)

Press [ n STOP] on main unit for next error

Press [ n STOP] on main

violation during highlight display

unit for next error

F4FF Force initialize failure (time

out)

Timeout when force initialization fails Press [ n STOP] on main

unit for next error

F700 MBX overflow When replying message to disc manager Press [ n STOP] on main

unit for next error

F701 Message command does

not end

F702 Message command

changes

F880 Task number is not

appropriate

F890 Sending message when

message is being sent to

Next message is sent before replying to disc manager

Message is changed before it is sent as a reply to disc manager

Message coming from a non-existing task

Press [ n STOP] on main unit for next error

Sending message to AV task Press [ n STOP] on main

unit for next error

AV task

F891 Message couldn’t be sent

to AV task

Begin sending message to AV task Press [ n STOP] on main

unit for next error

Error

Code

F893 FLASH ROM IC problem FLASH ROM IC installed is not operating

Diagnosis Contents Description of error Automatic FL Display Remarks

properly (Neccessary replacement of FLASH ROM IC) or firmware problem

SA-HT940P / SA-HT940 PC

Press [ n STOP] on main unit for next error

F894 EEPROM abnormality EEPROM IC installed is not operating in

F895 Region setting abnormality Firm version agreement check for factory

F896 No existence model Firm version agreement check for factory

F897 Initialize is not completed Initialize completion check for factory

F898 Disagreement of hardware

and software

F8A0 Message command is not

appropriate

normal condition (EEPROM contains neccessary data)

preset setting failure prevention. Check region setting & re-initialize

preset setting failure prevention

Unsuitable combination of AV DECORDER, SDRAM and FLASH ROM (firmware)

Begin sending message to AV task Press [ n STOP] on main

Press [ n STOP] on main unit for next error

unit for next error

Note:

An error code will be canceled if a power supply is turned OFF.

*1: CPPM is the copy guard function beforehand written in the disk for protection of copyrights.

*2: CEC is the consumer electronic control used for high-level user control of HDMI-connected devices.

*3: HDCP is the specification developed to control digital audio & video contents transmission for DVI or HDMI connections.

9.4. Sales Demonstration Lock Function

This function prevents discs from being lost when the unit is used for sales demonstrations by disabling the disc eject function. "LOCKED" is displayed on the unit, and ordinary operation is disabled.

9.4.1. Setting

· Prohibiting removal of disc

1. Select the DVD/CD function.

2. Press and hold down the “___LOCKED_” appears when the function is activated.)

Note:

OPEN/CLOSE

, DISC CHECK and DISC CHANGE buttons are invalid and the player displays “___LOCKED_” while

the lock function mode is entered.

· Prohibiting operation of selector and disk

1. Select the DVD/CD function.

2. Press and hold down the “___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.

Player , , , SELECTOR, , , VOLUME KNOB, DISC CHECK, DISC CHANGE, DISC1-DISC5

Remote

controller unit

SLEEP, REPEAT, 0~9, , RETURN, TOP MENU, , , , , , , POSITION MEMORY, TUNER/BAND, D.MIX, CH SELECT/ TEST, SET UP/ MUTING, DISPLAY, GROUP, TV, VCR/ AUX, QUICK REPLAY, SUBTITLE, FL DISPLAY, CH & VOLUME

button and the power button on the player for at least three seconds. (The message,

9.4.2. Cancellation

The lock can be cancelled by the same procedure as used in setting. ("UNLOCK" is displayed on cancellation. Disconnecting the

SA-HT940P / SA-HT940 PC

power cable from power outlet does not cancel the lock.)

9.5. Service Precautions

9.5.1. Recovery after the DVD player is repaired

· W hen the IC or HDMI module P.C.B. is replaced, carry out the recovery processing to optimize the drive.

Playback the recovery disk to process the recovery automatically.

· Recovery disc (Product number: RFKZD03R005)

· Performing recovery process

1. Load the recovery disc RFKZD03R005 on 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.

5. Initialize the player.

9.5.2. Firmware version-up of the DVD player

· The firmware of the DVD player may be renewed to improve the quality including operability and playability to the substandard

discs.processing to optimize the drive.

The recovery disc has also firmware version-up.

· After version-up, recovery processing is executed automatically.

· Part number of the recovery disc for version-up will be noticed when it is supplie d.

· Updating firmware

1. Load the recovery disc on to the player and run it.

2. Firmware version of the player is automatically checked. Appropriate message appears whenever necessary.

3. Using remote controller´s cursor key, select whether version updating is to be done or not. (Selection of Yes/No)

4. a. If Yes is selected, version updating is performed.

b. If No is selected, only recovery is performed.

5. a. When updating is finished, remove the disc according to the message appearing on the screen.

b. Remove the disc according to the message appearing on the screen.

6. Turn off the power.

Note:

If the AC power supply is shut out during version-up due to a power failure, the version-up is improperly carried out.

In such a case, replace the FLASH ROM IC and carry out the version-up again.

9.5.3. DVD Module Reset

· W hen after replacing Flash Rom IC or the DVD Module P.C.B., FL displays error code “ DVD F897”. This means the unit is not

initialized properly and the following process needs to be carry out.

· Procedures:

1. Press

2. FL display show “INIT”

3. While still pressing “STOP” button on main unit, press “ENTER” on remote control.

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

5. Power off unit. Unplug the AC cord.

6. Power on the unit. It should be no problem. If problem persist check on the DVD module P.C.B. or FLASH ROM IC.

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

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