Panasonic SA-HT40EE User manual

nAMPLIFIER SECTION
RMS output power of each channel driven
10% total harmonic distortion
1 kHz front CH
90 W per channel (4 Ω)
1 kHz surround CH
90 W per channel (4 Ω)
1 kHz center CH
220 W per channel (6 Ω)
100 Hz subwoofer CH
220 W per channel (6 Ω)
Total RMS output power 800 W
Rated minimum sine wave RMS power output
1% total harmonic distortion (Dolby Digital mode)
1 kHz front CH
50 W per channel (4 Ω)
1 kHz surround CH
50 W per channel (4 Ω)
1 kHz center CH
150 W per channel (6 Ω)
100 Hz subwoofer CH
150 W per channel (6 Ω)
Total RMS output power 500 W
Total harmonic distortion
Half power at 1 kHz (Front CH) 0.5% (4 Ω)
Input sensitivity
GAME/AUX, TV, DVR/DVD-P 450 mV, IHF’66
MUSIC PORT 250 mV, IHF’66
S/N at rated power (4 Ω
ΩΩ
Ω)
GAME/AUX, TV, DVR/DVD-P 80 dB, (85 dB, IHF’66)
©2006 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SA-HT40EE
Colour
(S).......................Silver Type
MUSIC PORT 70 dB, (85 dB, IHF’66)
Input impedance
GAME/AUX, TV, DVR/DVD-P, MUSIC PORT
47 kΩ
Tone controls
BASS 50 Hz, +10 to -10 dB
TREBLE 20kHz,+10to-10dB
Digital input
OPTICAL 2
COAXIAL 1
nFM TUNER SECTION
Frequency range
87.50 MHz to 108.00 MHz
Sensitivity
S/N 30 dB 1.9 µV/75 Ω
S/N 26 dB 1.8 µV/75 Ω
S/N 20 dB 1.6 µV/75 Ω
IHF usable sensitivity (IHF’58) 2.2 µV/75 Ω
IHF 46 dB stereo quieting sensitivity 22 µV/75 Ω
Total Harmonic distortion
MONO 0.2%
STEREO 0.3%
S/N
MONO 60 dB (71 dB, IHF)
STEREO 58 dB (65 dB, IHF)
Frequency response
20 Hz to 15 kHz, +1 dB, -2 dB
Image rejection at 98 MHz 40 dB
IF rejection at 98 MHz 70 dB
Stereo separation (1 kHz) 40 dB
Home Theater Audio System
Specification
ORDER NO. MD0604121C3

Antenna terminal 75 Ω(unbalanced)
nAM TUNER SECTION
Frequency range
522 kHz to 1611 kHz (9 kHz steps)
530 kHz to 1620 kHz (10 kHz steps)
Sensitivity 500 µV/m
Selectivity (at 999 kHz) 30 dB
nGENERAL
Power supply
AC 230 to 240 V, 50 Hz
Power consumption 120 W
Dimensions (W × H × D)
430 mm x 105 mm x 385 mm
Mass 3.8 kg
Power consumption in standby mode: 1W
nSYSTEM
1 Safety Precautions 4
1.1. General Guidelines 4
1.2. Before Repair and Adjustment 4
1.3. Protection Circuitry 4
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 5
3 Handling the Lead Solder 5
3.1. About Lead Free Solder (PbF) 5
4 Accessories 6
5 Operation Procedures 7
5.1. Remote Control Operation 7
5.2. Main Unit Operation 8
6 New Features 10
6.1. Music Port 10
7 Self Diagnosis and Special Mode Setting 11
7.1. Doctor & Service Mode (Special Mode setting) 11
7.2. Error Code Table 12
8 Assembling and Disassembling 13
8.1. Caution 13
8.2. Disassembly Flow Chart 13
8.3. Main Parts Location 14
8.4. Disassembly of Top Cabinet 15
8.5. Disassembly of Rear Panel 15
8.6. Disassembly of Front Panel 16
8.7. Disassembly of Panel P.C.B., Music Port P.C.B. & Volume
P.C.B. 16
8.8. Disassembly of Main P.C.B. 17
8.9. Disassembly of DSP P.C.B. 18
8.10. Disassembly of AC In P.C.B. 18
System: SC-HT40 (EE)
Main unit: SA-HT40 (EE)
Front speakers: SB-PF41 (GN)
Surround speakers: SB-PS41 (GN)
Center speaker: SB-PC40 (P)
Subwoofer: SB-W40 (P)
Notes:
1. Specifications are subject to change without notice.
Mass and dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
* Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the double-D symbol are trademarks of
Dolby Laboratories.
** Manufactured under license from Digital Theater System.
“DTS” and “DTS Digital Surround” are trademarks of Digital Theater
System.
8.11. Disassembly of Power P.C.B. 19
8.12. Disassembly of Digital Amp P.C.B. 20
9 Service Position 22
9.1. Checking the DSP P.C.B. (Side A) & AC In P.C.B. 22
9.2. Checking the DSP P.C.B. (Side B) 22
9.3. Checking the Panel P.C.B., Music Port P.C.B. and Volume
P.C.B. 23
9.4. Checking the Main P.C.B., Power P.C.B. & Digital Amp
P.C.B. 24
10 Voltage Measurement and Waveform Chart 25
10.1. Voltage Measurement 25
10.2. Waveform Chart 29
11 Wiring Diagrams 33
12 Block Diagram 35
13 Schematic Diagram 37
13.1. Notes of Schematic Diagram 37
13.2. (A) DSP Circuit 39
13.3. (B) Main Circuit 41
13.4. (C) Digital Amp Circuit 45
13.5. (D) Panel Circuit, (E) Volume Circuit & (F) Music Port
Circuit 47
13.6. (G) Power Circuit & (H) AC In Circuit 49
14 Printed Circuit Board Diagram 51
14.1. (A) DSP P.C.B. 52
14.2. (B) Main P.C.B. 53
14.3. (C) Digital Amp P.C.B. 54
14.4. (D) Panel P.C.B., (E) Volume P.C.B. & (F) Music Port
P.C.B. 55
14.5. (G) Power P.C.B. 56
CONTENTS
Page Page
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SA-HT40EE

14.6. (H) AC In P.C.B. 57
15 Illustrations of IC's, Transistors & Diodes 59
16 Terminal Functions of Integrated Circuits 60
16.1. IC301 (C2CBYY000152): Microprocessor 60
17 Exploded Views 61
17.1. Cabinet Parts Location 61
17.2. Packaging 62
18 Replacement Parts List 63
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SA-HT40EE

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, make 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 5.2Ω.
When the exposed metal does not have a return path to the chassis, the reading must be .
Fig. 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 C707 & C1706 through a 10 Ω, 1W 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 - 240 V, 50Hz in NO SIGNAL mode should be 200 ~ 800 mA.
1.3. Protection Circuitry
The protection circuitry may have operated if either of the following conditions is noticed:
*No sound is heard when the power is supplied.
*Sound stops during a performance.
The functions of this circuitry is to prevent circuitry damage, 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 this unit are used.
If this occurs, follow the procedure outlined below:
1. Press the STANDBY /ON button, switch to STANDBY mode.
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SA-HT40EE

2. Determine the cause of the problem and correct it.
3. Press the STANDBY /ON button once again, supply the power.
Note:
When the protection circuitry functions, the unit will not operate unless the STANDBY /ON button is first switched STANDBY
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 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-equiped 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 equiped with ES devices, place the assembly on a conductive surface such as aluminium
foil, to prevent electrostatic charge build up 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 remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or
comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize body motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing
together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to
damage an ES device).
3 Handling the Lead Solder
3.1. About Lead Free Solder (PbF)
Distinction of PbF P.C.B. :
P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B.
Caution:
· Pb free solder has a higher melting point that 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.
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SA-HT40EE