Panasonic SA-HT940PC Bedienungsanleitung

lGeneral

Power Source:

C 120V, 60Hz

Power consumption: 150 W

Dimensions (W×H×D): 430×70×439.2 mm

(16-15/16”×2-3/4”×17-19/64”)

Mass: 5 kg (11.02Ibs)

lAmplifier section

RMS Output Power: Dolby Digital Mode

lTotal RMS Dolby Digital

mode Power: 1200 W

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:

860 W

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

lFront: 120 W/ Channel (8Ω)

distribution is a violation of law.

SA-HT940P

SA-HT940PC

Colour

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

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:: FM 15 stations

AM/ MW 15 stations

Frequency Range: 87.9-107.9MHz

(200kHz in step)

87.5-108.0MHz

(100kHz in step)

Sensitivity: 2.5µV (IHF)

S/N 26dB 2.2µV

Antenna Terminals: 75Ω(unbalanced)

lAM tuner section

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

AM Sensitivity S/N 20dB at

1000kHz: 560µV/m

lPhone Jack:

Terminal: Stereo 3.5 mm (1/8”) jack

lFront M. Port:

DVD Home Theater Sound System

Specifications

ORDER NO.MD0603057C1

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: 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: NTSC

Composite video output:

Output level: 1 Vp-p (75 Ω)

Terminal: Pin jack (1 system)

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,

PR: 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-HT940PC

1 Safety Precautions 5

1.1. GENERAL GUIDELINES 5

1.2. Before Repair and Adjustment 5

1.3. Protection Circuitry 6

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices 6

3 Precaution of Laser Diode 8

4 About Lead Free Solder (PbF) 8

5 Handling Precautions for Traverse Unit 9

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

5.2. Grounding for electrostatic breakdown prevention 9

6 Accessories 11

7 Operation Procedures 12

7.1. Remote Control Keys Operation 12

7.2. Main Unit Keys Operation 13

7.3. Disc Information 14

8 New Features 16

8.1. Using of Receiver Unit (SH-FX60 / SH-FX80) 16

8.2. About HDMI 20

9 Self-Diagnosis and special mode setting 22

9.1. Service Mode Summary Table 22

9.2. Service Mode Table 1 22

9.3. DVD Self Diagnostic Function-Error Code 27

9.4. Sales Demonstration Lock Function 29

9.5. Service Precautions 30

10 Assembling and Disassembling 31

10.1. Disassembly Flow Chart 32

10.2. Main Components and P.C.B. Locations 33

10.3. Disassembling the Top Cabinet 34

10.4. Disassembling the Front Panel Assembly 34

10.5. Disassembling the Tray Assembly 34

10.6. Disassembling the Rear Panel 35

10.7. Disassembling the Mechanism Base Assembly 35

10.8. Disassembling the FL & Head phone P.C.B. 35

10.9. Disassembling the HDMI Module P.C.B. 36

10.10. Disassembling the Regulator P.C.B. 36

10.11. Disassembling the Main P.C.B. 36

10.12. Disassembling the AC-Inlet, Power & Sub Power P.C.B 36

10.13. Disassembly of Digital Amp IC 37

10.14. Disassembly of Regulator IC 37

10.15. Disassembly of Switch Regulator IC (IC5701) 37

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

Guide (R) 38

10.17. Disassembly of the Rotary Tray 38

10.18. Disassembly of the Traverse Unit 39

10.19. Assembly of Tray Assembly 41

CONTENTS

Page Page

SA-HT940P / SA-HT940PC

11 Service Fixture and Tools 43

12 Service Positions 43

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

Module P.C.B., FL and Head phone P.C.B. 43

13 Measurements and Adjustments 44

13.1. Service Tools and Equipment 44

13.2. Important points in adjustment 44

13.3. Storing and handling of test discs 44

13.4. Optical adjustment 45

13.5. Abbreviations 46

14 Voltage and Waveform Chart 48

14.1. HDMI Module P.C.B. 48

14.2. Main P.C.B. 50

14.3. Power P.C.B. 52

14.4. FL P.C.B. 52

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

Regulator P.C.B. 53

14.6. Waveform Chart 54

15 Illustration of IC's, Transistors and Diodes 55

16 Wiring Connection Diagram 57

17 Block Diagram 59

18 Schematic Diagram (Notes) 65

19 Schematic Diagram 67

19.1. (A) HDMI Module Circuit 67

19.2. (B) Main Circuit 73

19.3. (C) Power, AC-inlet and Sub power Circuit 78

19.4. (C) FL and Headphone Circuit 81

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

Circuit 82

20 Printed Circuit Board 83

20.1. (A) HDMI Module P.C.B. 83

20.2. (B) Main P.C.B., AC-Inlet P.C.B. & Sub Power P.C.B 84

20.3. (C) Power P.C.B. 85

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

Regulator P.C.B. 86

21 Basic Troubleshooting Guide 87

21.1. Basic Troubleshooting Guide for Traverse Unit (HDMI

Module P.C.B) 87

21.2. Basic Troubleshooting Guide for HDMI AV output 88

22 Overall Block Diagram for HT940 89

22.1. HT940 DVD Unit Block Diagram 90

22.2. HT940 Block Diagram (Analog Signal) 91

22.3. HT940 Block Diagram (Analog Signal) 92

22.4. HT940 Power Supply Block Diagram 93

22.5. HT940 Power Block Diagram (SMPS) 94

23 Terminal Function of ICs 95

23.1. IC2001 (MN101C49GHH): Operation CPU 95

24 Exploded Views 96

24.1. Cabinet Parts Location 96

24.2. Packaging 99

25 Replacement Parts List 100

25.1. Component Parts List 101

SA-HT940P / SA-HT940PC

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 1MΩand 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-HT940PC

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 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.

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 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-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).

SA-HT940P / SA-HT940PC

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 (manufactured) 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-HT940PC

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-HT940PC

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