Panasonic SAXR55P - A/V RECEIVER Manual de usuario

nAMPLIFIER SECTION

Rated minimum sine wave RMS power output

20 Hz-20 kHz both channels driven

0.09 % total harmonic distortion 100 W per channel

(6 Ω)

1 kHz continuous power output both channels driven

0.09 % total harmonic distortion 105 W per channel

(6 Ω)

Total harmonic distortion

rated power at 20 Hz-20 kHz 0.09 % (6 Ω)

Power bandwidth

both channels driven, -3 dB 4 Hz-88 kHz

(6 Ω,0.9%)

Power output each channel driven

0.9 % total harmonic distortion at 1kHz

Front (L/R) 100 W (6 Ω)

Center 100 W (6 Ω)

Surround (L/R) 100 W (6 Ω)

Surround Back (L/R) 100 W (6 Ω)

Load impedance

Front (L/R)

AorB 6-8 Ω

A and B 6-8 Ω

BI-WIRE 6-8 Ω

Center 6-8 Ω

Surround (L/R) 6-8 Ω

Surround Back (L/R) 6-8 Ω

Frequency response

CD, TAPE, TV, DVD, DVD RECORDER,

VCR1, VCR2

4 Hz-88 kHz, ±3 dB

DVD 6CH 4 Hz-44 kHz, ±3 dB

rights reserved. Unauthorized copying and

distribution is a violation of law.

SA-XR55P

SA-XR55PC

Colour

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

(K)...............Black Type (P only)

Input sensitivity

CD, TAPE, TV, DVD, DVD RECORDER,

VCR1, VCR2

27 mV

(200mV, IHF ’66)

Input impedance

CD, TAPE, TV, DVD, DVD RECORDER,

VCR1, VCR2

22 kΩ

S/N (IHF A)

CD, TV, DVD, DVD RECORDER

(Digital Input)

85 dB

(103 dB, IHF ’66)

Tone controls

BASS 50 Hz, +10 to -10 dB

TREBLE 20kHz,+10to-10dB

Subwoofer frequency response (-6 dB) 7 Hz-200 Hz

nFM TUNER SECTION

Frequency range 87.9-107.9 MHz

Sensitivity 11.2 dBf

(2 µV, IHF ’58)

50 dB quieting sensitivity

MONO 18.3 dBf

(4.5 µV, IHF ’58)

STEREO 38.3 dBf

(45 µV, IHF ’58)

Total harmonic distortion

MONO 0.2%

STEREO 0.3%

S/N

AV Control Receiver

Specification

ORDER NO. MD0504178C1

MONO 73 dB

STEREO 67 dB

Frequency response 20 Hz-15 kHz, +1 dB,

-2 dB

Alternate channel selectivity 65 dB

Capture ratio 1.5 dB

Image rejection at 98 MHz 40 dB

Spurious response rejection at 98 MHz 75 dB

AM suppression 50 dB

Stereo separation

1 kHz 40 dB

10 kHz 30 dB

Antenna terminal 75 Ω(unbalanced)

nAM TUNER SECTION

Frequency range 530-1710 kHz

Sensitivity 20 µV, 330 µV/m

Selectivity 55 dB

IF rejection at 1000 kHz 50 dB

nVIDEO SECTION

Output voltage at 1 V input (unbalanced) 1±0.1 Vp-p

Maximum input voltage 1.5 Vp-p

Input/output impedance 75 Ω

S-Video

1 SAFETY PRECAUTIONS 4

1.1. GENERAL GUIDELINES 4

2 Before Repair and Adjustment 5

3 Protection Circuitry 5

4 Handling the Lead-free Solder 5

4.1. About lead free solder (PbF) 5

5 Accessories 6

6 Operating Instructions 7

6.1. Main Unit 7

6.2. Remote Control 8

6.3. Home Theater Connections 9

6.4. Other Connections 14

7 Disassembly and Main Component Replacement Procedures

and Operational Check 17

7.1. Disassembly flow chart 17

7.2. P.C.B. Positions 18

7.3. Disassembly of Top Cabinet. 18

7.4. Checking for the DSP P.C.B. (Side A/B) and Main P.C.B.

(Side A). 19

Input TV, DVD, DVD

RECORDER

Output TV MONITOR

Component Video

Input TV, DVD, DVD

RECORDER

Output TV MONITOR

nGENERAL

Power supply AC 120 V, 60 Hz

Power consumption 135 W

Dimensions (W × H × D) 430 mm × 107.5 mm ×

394 mm

(16-15/16” × 4-7/32” × 15-1/2”)

Mass 4.6 kg (10.1 lb.)

nDIN POWER

1 kHz, T.H. D 1% 2 x 100 W (6 Ω)

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.

7.5. Disassembly and Checking of Main P.C.B. (Side B) 20

7.6. Disassembly of Tuner Pack and Tuner Extent P.C.B. 20

7.7. Disassembly and Checking of Speaker P.C.B. 21

7.8. Disassembly and Checking of Component Video P.C.B.

7.9. Disassembly and Checking of Video & Optical P.C.B. 22

7.10. Disassembly of Rear Panel 22

7.11. Disassembly and Checking of Input P.C.B. 23

7.12. Disassembly of Front Panel 24

7.13. Disassembly and Checking of Panel P.C.B., Volume

P.C.B. and Headphone P.C.B. 25

7.14. Disassembly and Checking of Power P.C.B. 26

8 Self Diagnosis Display Function 27

8.1. Automatically Displayed Error Codes 27

8.2. Display Details 27

8.3. Returning to Normal Display 27

8.4. Overload/Shutdown Detection intenal Condition 27

8.5. Overload/Thermal Detection Display 27

8.6. Activating Self Diagnosis Function (Servicing Mode) 27

8.7. Analog 6.1 CH Output Check Method 28

CONTENTS

Page Page

SA-XR55P / SA-XR55PC

8.8. Returning to Normal Display 28

8.9. Activating Self Diagnosis Function (Doctor Mode) 28

9 Voltage Measurement and Waveform Chart 30

9.1. Voltage Measurement 30

9.2. Waveform Chart 37

10 Block Diagram 39

11 Notes of Schematic Diagram 51

12 Schematic Diagram 52

12.1. DSP Circuit 52

12.2. Main Circuit 57

12.3. Input Circuit &Tuner Extent Circuit 75

12.4. Panel Circuit 80

12.5. Speaker Circuit, Headphone Circuit & Volume Circuit 82

12.6. Power Circuit 83

12.7. Video and Optical Circuit 87

12.8. Component Video Circuit 90

13 Printed Circuit Board 91

13.1. DSP P.C.B. (Side A & B) 91

13.2. Main P.C.B. (Side A & B) 93

13.3. Input P.C.B. 97

13.4. Tuner Extent P.C.B., Panel P.C.B. & Headphone P.C.B.

13.5. Volume P.C.B. & Speaker P.C.B. 101

13.6. Power P.C.B. 102

13.7. Video & Optical P.C.B. & Component Video P.C.B. 103

14 Wiring Connection Diagram 105

15 Type Illustration of ICｴs, Transistors and Diodes 107

16 Terminal Function of ICs 108

16.1. IC6801 (C2BBGF000669): Microprocessor 108

17 Parts Location and Replacement Parts List 109

17.1. Cabinet Parts Location 110

17.2. Electrical Parts List 113

17.3. Packing Materials & Accessories Parts List 129

17.4. Packaging 129

SA-XR55P / SA-XR55PC

(This “Safety Precaution” is applied only in U.S.A.)

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. Before servicing, unplug the power cord to prevent an electric shock.

2. When replacing parts, use only manufacturer’s recommended components for safety.

3. Check the condition of the power cord. Replace if wear or damage is evident.

4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.

5. Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to prevent the

customer from being exposed to a shock hazard.

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.

SA-XR55P / SA-XR55PC

1.1.3. CAUTION FOR FUSE REPLACEMENT

2 Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C707, C717 and C718 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, 50/60 Hz in NO SIGNAL mode should be 200~800 mA.

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.

4 Handling the Lead-free Solder

4.1. About lead free solder (PbF)

Distinction of PbF P.C.B.:

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

Caution:

Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please

use a high temperature soldering iron. In case of soldering iron with temperature control, please set it to 700 ± 20°F (370 ±

10°C).

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

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-XR55P / SA-XR55PC

5 Accessories

Note : Refer to Packaging Materials & Accessories Part List (Section 17.3) for part number.

AC cord

FM indoor antenna

AM loop antenna

Remote control

SA-XR55P / SA-XR55PC

6.1. Main Unit

6 Operating Instructions

SA-XR55P / SA-XR55PC

6.2. Remote Control

SA-XR55P / SA-XR55PC

6.3. Home Theater Connections

6.3.1. TV and DVD Player

SA-XR55P / SA-XR55PC

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