Panasonic SAHT-855 Service manual

ORDER NO.MD0603062C2

DVD Home Theater Sound System

SA-HT855E SA-HT855EB SA-HT855EG

Colour

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

Specifications

lGeneral

Power Source:

E/ EG areas:

EB area:

Power consumption: 115 W

Dimensions (W×H×D): 430×60×354 mm

Mass: 3.35kg

lAmplifier section

RMS Output Power: Dolby Digital Mode

lTotal RMS Dolby Digital

mode Power:

At 1kHz and total harmonic of 10%

lFront: 110 W/ Channel (3Ω)

lCenter: 225 W/ Channel (6Ω)

lSurround: 90 W/ Channel (4Ω)

At 100Hz and total harmonic of 10%

lActive subwoofers: 225 W/ Channel (6Ω)

DIN Output Power: Dolby Digital Mode:

lTotal DIN Dolby Digital mode Power:

At 1kHz and total harmonic of 1%

C 230V, 50Hz

C 230V-240V, 50Hz

850 W

440 W

lFront: 80 W/ Channel (3Ω)

lCenter: 75 W/ Channel (6Ω)

lSurround: 65 W/ Channel (4Ω)

At 100Hz and total harmonic of 1%

lSubwoofer: 75 W/ Channel (6Ω )

lFM tuner section

Preset Memory: FM 15 stations

AM/MW 15 stations

Frequency Range: 87.50-108.00MHz

(50kHz in step)

Sensitivity: 1.8µV (IHF)

S/N 26dB

Antenna Terminals: 75Ω (unbalanced)

lAM tuner section

Frequency Range: 522-1629kHz (9kHz in step)

AM Sensitivity S/N 20dB at 999kHz:

lDigital audio input:

Optical digital input: Optical terminal (1 system)

Sampling frequency: 32kHz, 44.1kHz, 48kHz

lPhone Jack:

1.4µV

560µV/m

SA-HT855E / SA-HT855EB / SA-HT855EG

Terminal: Stereo 3.5 mm jack

lFront M. Port:

Sensitivity: 100mV (15kΩ)

Terminal: Stereo 3.5 mm jack

lDisc section

Discs played (8 cm or 12 cm):

(1) DVD [DVD-Video, DVD-Audio, DivX(*1,2)]

(2) DVD-RAM [DVD-VR, MP3(*2,6), JPEG(*2,3), MPEG4(*2 ,4),

DivX(*1,2)]

(3) DVD-R [DVD-Video, DVD-VR, MP3(*2,6), JPEG(*2,3),

MPEG4(*2,4), DivX(*1,2)]

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

(5) DVD-RW [DVD-Video, DVD-VR, MP3(*2,6), JPEG(*2,3),

MPEG4(*2,4), DivX(*1,2)]

(6) +R/+RW [Video]

(7) +R DL [Video]

(8) CD, CD-R/RW [CD-DA, Video CD, SVCD(*5), MP3(*2,6),

WMA(*2,7), JPEG(*2,3), MPEG4(*2,4), DivX (*1,2), HighMAT Level 2 (Audio and Image)]

*1 Plays all versions of DivX® video (including DivX®6) with

standard playback of DivX® media files. Certified to the DivX Home Theater Profile.

lGMC (Global Motion Compensation) is not supported.

*2 The total combined maximum number of recognizable audio,

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

*3 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, 4:4:4). Extremely long and narrow pictures may not be displayed.

*4 MPEG4 data recorded with Panasonic SD multi cameras or

DVD video recorders.

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

*5 Conforming to IEC62107

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

*7 Windows Media Audio Ver.9.0 L3

lNot compatible with Multiple Bit Rate (MBR)

Pick up:

Wavelength:

lCD: 785nm

lDVD: 662nm

Laser power:

lCD: CLASS 1M

lDVD: CLASS 1

Audio output (DISC):

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

SW)

Audio performance:

Frequency response:

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

4 Hz-44 kHz (96 kHz sampling)

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

sampling)

CD-Audio: 4 Hz-20 kHz

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: PAL 625/50, PAL 525/60,

NTSC

Composite video output:

Output level:

1 Vp-p (75 Ω )

Terminal: Pin jack (1 system)

Scart jack (1 system)

S-video output:

output level: 1 Vp-p (75 Ω)

C output level: PAL; 0.3Vp-p (75Ω)

NTSC; 0.286 Vp-p (75 Ω)

Terminal S terminal (1 system)

Scart jack (1 system)

Component video output (NTSC: 480p/480i, PAL: 576p/576i):

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)

RGB video output:

R output level:

0.7 Vp-p (75 Ω )

G output level: 0.7 Vp-p (75 Ω )

B output level: 0.7 Vp-p (75 Ω)

Terminal: Scart jack (1 system)

HDMI AV output:

19 pin type A connector, HDMI

Ver.1.2a (EDID Ver.1.3)

Power consumption in standby mode:

approx 0.5W

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 DL2SU (Single tray) mechanism.

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

SA-HT855E / SA-HT855EB / SA-HT855EG

CONTENTS

Page Page

1 Safety Precautions

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)

4.1. Service caution based on legal restrictions

5 Caution for AC Mains Lead

6 Handling Precaution s for Traverse Unit

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

6.2. Grounding for electrostatic breakdown prevention 10

7 Accessories

8 Operation Procedures

8.1. Operating instructions

8.2. Main Unit Keys Operation

8.3. Connection Setup (HDMI/ Scart)

8.4. Use of HDAVI Control

8.5. Using of Music Port

8.6. Disc Information

8.7. About DivX VOD Content

9 New Features

9.1. About HDMI

10 Self-Diagnosis and special mode setting

SA-HT855E / SA-HT855EB / SA-HT855EG

10.1. Service Mode Summary Table 24

10.2. Service Mode Table 1

10.3. DVD Self Diagnostic Function-Error Code

10.4. Sales Demonstration Lock Function

10.5. Service Precautions

11 Assembling and Disassembling

11.1. Disassembly Flow Chart

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

11.3. Disassembly of Top Cabinet

11.4. Disassembly of the DVD Lid (When taking out disc

manually)

11.5. Disassembly of Front Panel Assembly

11.6. Disassembly of Music Port P.C.B, FL P.C.B. & Top

Button P.C.B.

11.7. Disassembly of DVD Mechanism Unit

11.8. Disassembly of HDMI Module P.C.B.

11.9. Disassembly of Rear panel

11.10. Disassembly of Scart P.C.B.

11.11. Disassembly of Relay P.C.B.

11.12. Disassembly of Main P.C.B., AC-Inlet P.C.B. & Tuner

Extent P.C.B.

11.13. Disassembly of Digital Amp IC

11.14. Disassembly of Digital Amp IC (IC5400)

11.15. Disassembly of Regulator IC

11.16. Disassembly of Switch Regulator IC (IC5701)

11.17. Service Position

12 Assembly and disassemb ly of Mechanism Unit

12.1. Disassembly Procedure

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. FL P.C.B., Scart P.C.B., Tray Loading P.B.C. 55

14.4. 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) Main/Power Circuit

19.4. (D) FL, Scart, Tuner, Tray Loading, Relay Circuit

20 Printed Circuit Board

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

20.2. (B) Main P.C.B.

20.3. (C) Tuner extent, AC-inlet, FL, Music port & Top button

P.C.B.

20.4. (D) Scart, Tray motor & Relay 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 Flow-Chart (HT855)

22.1. SC-HT855 DVD Unit Block Diagram

22.2. HT855 Block Diagram (Analog Signal : DVD 5.1ch Play

Back Mode)

22.3. HT855 Block Diagram (Analog Signal : 2ch Analog Input

Mode)

22.4. HT855 Power Supply Block Diagram

22.5. HT855 Power Block Diagram (SMPS)

23 Terminal Function of ICs

23.1. IC2018 (C2CBYY000196): Operation CPU

24 Exploded Views

24.1. Cabinet Parts Location

24.2. Packaging

25 Replacement Parts List

25.1. Component Parts List

100

101

102

104

105

106

SA-HT855E / SA-HT855EB / SA-HT855EG

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 C5716, C5717, C5718 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 230 V, 50 Hz in NO SIGNAL mode volume minimal should be ~ 600 mA. (For E/ EG)

Current consumption at AC 230V~240 V, 50 Hz in NO SIGNAL mode volume minimal should be ~ 600 mA. (For EB)

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 impedance less than the indicated rated impedance of the amplifier are used.

SA-HT855E / SA-HT855EB / SA-HT855EG

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 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 applyin g 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-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, 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).

3 Precaution of Laser Diode

SA-HT855E / SA-HT855EB / SA-HT855EG

4 About Lead Free Solder (PbF)

4.1. Service caution based on legal restrictions

4.1.1. General description about Lead Free Solder (PbF)

The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation.

The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin (Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that of the normal solder.

Definition of PCB Lead Free Solder being used

The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder. (See right figure)

Service caution for repair work using Lead Free Solder (PbF)

· The lead free solder has to be used when repairing the equipment for which the lead free solder is used.

(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)

· To put lead free solder, it should be well molten and mixed with the original lead free solder.

· Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.

· Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt

the lead free solder.

· Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30

degrees C (662±86°F).

Recommended Lead Free Solder (Service Parts Route.)

· The following 3 types of lead free solder are available through the service parts route.

RFKZ03D01K-----------(0.3mm 100g Reel)

RFKZ06D01K-----------(0.6mm 100g Reel)

RFKZ10D01K-----------(1.0mm 100g Reel)

Note

* Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%

5 Caution for AC Mains Lead

SA-HT855E / SA-HT855EB / SA-HT855EG

6 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 handlin g the laser diode.

6.1. 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.

6.2. 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.

6.2.1. Worktable grounding

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

6.2.2. Human body grounding

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

SA-HT855E / SA-HT855EB / SA-HT855EG

7 Accessories

Remote control

AM loop antenna

FM indoor antenna

AC cord

(For EB area)

AC cord

(For E, EG areas)

Speaker cable

Video cable

(For E, EG areas)

Din adaptor

(For EB area)

Speaker label

8 Operation Procedures

8.1. Operating instructions

SA-HT855E / SA-HT855EB / SA-HT855EG

8.2. Main Unit Keys Operation

SA-HT855E / SA-HT855EB / SA-HT855EG

8.3. Connection Setup (HDMI/ Scart)

Below is the guide for the connection between the main unit and television and/ or Set Top Box.

Caution:

· Do not connect through the video cassette recorder. (Due to copyguard protection, the picture may not be display ed

properly.)

· Turn off the television before connec tion.

8.3.1. Connecting with television and Set Top Box

SA-HT855E / SA-HT855EB / SA-HT855EG

8.3.2. Connecting with HDMI-compatible TV & Set Top Box

8.4. Use of HDAVI Control

SA-HT855E / SA-HT855EB / SA-HT855EG

8.5. Using of Music Port

MONO

H.B

8.6. Disc Information

8.6.1. Disc Playability (Media)

Discs that can be played

DVD-Video

—

DVD-Audio

DVD-V

DVD-A

Some DVD-Audio discs contain DVD-Video content.

SA-HT855E / SA-HT855EB / SA-HT855EG

DVD-V

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

MP3

JPEG DivXMPEG4

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

unified video recording

DCF (Design rule for Camera

File System) Standard Version 1.0.

Recorded with Panasonic SD multi cameras or DVD video recorders [conforming to SD VIDEO

MPEG4

specifications (ASF standard)/MPEG4 (Simple Profile) video system/G.726 audio system].

DVD-R

(DVD-Video) (DVD-Video)/

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

DVD-R (VR)

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

DVD-RCD/

—

DVD-RW

Finalize the disc after recording.

(Video) (Video)

+R +RW/

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

DVD-RW

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

(VR)/

DVD-VR

DVD-V

MP3

JPEG

DVD-V

on DVD video recorders or DVD video cameras.

JPEGMP3 VCDWMA

DivXMPEG4

the disc after

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).

Functions added with DivX Ultra are not supported.

Includes single-sided, dual-layer discs.

A process that allows play on compatible equipment.

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

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 market including CVD, DVCD and SVCD that do not conform to IEC62107.

To clean discs

Wipe with a damp cloth and then 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.

Video systems

This unit can play PAL and NTSC, but your television must match the system used on the disc. PAL discs cannot be correctly viewed on an NTSC television. This unit can convert NTSC signals to PAL 60 for viewing on a PAL television.

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.

SA-HT855E / SA-HT855EB / SA-HT855EG

8.6.2. File Extension Type Support (WMA/MP3/JPEG/MPEG4/DivX)

8.7. About DivX VOD Content

SA-HT855E / SA-HT855EB / SA-HT855EG

9 New Features

9.1. About HDMI

9.1.1. What is HDMI?

9.1.2. Advanced Digital Pictures

9.1.3. Advanced Digital Sound

SA-HT855E / SA-HT855EB / SA-HT855EG

9.1.4. Easy to Use

9.1.5. HDMI Compatible Products

SA-HT855E / SA-HT855EB / SA-HT855EG

10 Self-Diagnosis and special mode setting

10.1. 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 7 Micro-processor firmware version check

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.

FUNCTIONS DVD laser drive current check (Refer to the item

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.)

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

“10.2 Service Mode Table 1” for more information”.

“10.2.1. Optical Pick-up Self-Diagnosis”).

10.2. 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 uni is used to show the following page. (Display 1/Display 2).

SA-HT855E / SA-HT855EB / SA-HT855EG

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" 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" 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" 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" on remote control unit for next page. (FL Display)

SA-HT855E / SA-HT855EB / SA-HT855EG

Micro-processor firmware version display & EEPROM checksum display.

Initialization

Region display

DVD module firmware version display

Communication

error display

DVD Module

Reset

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 module firmware version is displayed on the FL Display.

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

To reset DVD Module.

N: noPAL / P: PAL

Region No.

Region

FL Display

Existence of EEPROM

N: NTSC / 6: PAL60

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.

While in initialization mode, press & hold STOP button on player, follow by "ENTER" button on the remote control unit. Cancelled automatically 5 seconds later.

SA-HT855E / SA-HT855EB / SA-HT855EG

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

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.

10.2.1. 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 effectiv e 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-HT855E / SA-HT855EB / SA-HT855EG

10.3. DVD Self Diagnostic Function-Error Code

SA-HT855E / SA-HT855EB / SA-HT855EG

Error

Code

U11 Focus servo error Focus coil NG (OPU unit abnormal) or

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

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

abnormality

disc motor error

switch (S9001) failure

disc media is dirty

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

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 connection could be problem

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-HT855E / SA-HT855EB / SA-HT855EG

Error

Diagnosis Contents Description of error Automatic FL Display Remarks

Code

F600 Access failure to

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

F601 Indeterminate sector ID

requested

F602 Access failure to LEAD-IN

caused by demodulation

Operation stopped caused by the request to access abnormal ID data

Press [ n STOP] on main unit for next error

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)

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

F620 Laser safeguard: high

temperature condition

F621 Laser safeguard: circuit

failure condition

F103 Illegal highlight Position Big possibility of disc specification

F4FF Force initialize failure (time

out)

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

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

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

F890 Sending message when

message is being sent to AV task

F891 Message couldn’t be sent

to AV task

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

unit for next error

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

unit for next error

+ 89 hidden pages

Panasonic SAHT-855 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual