Panasonic HDMI SA-XR70E User manual

nAMPLIFIER SECTION
Power output (at AC 230-240 V)
DIN 1 kHz (T.H.D. 1 % ) 2 x 100 W (6 Ω)
20 Hz-20 kHz continuous power output both channels driven
2x80W(6Ω)
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 (at AC 230-240 V)
DIN 1 kHz (T.H.D. 1 % )
Front (L / R) 100 W (6 Ω)
Center 100 W (6 Ω)
Surround (L / R / BACK) 100 W (6 Ω)
Load impedance
Front (L / R)
AorB 6-16 Ω
A and B 6-16 Ω
BI-WIRE 6-16 Ω
Center 6-16 Ω
Surround (L / R / BACK) 6-16 Ω
Frequency response
CD, TV, DVD, DVR / VCR1, VCR2,
TAPE 4 Hz-88 kHz, ± 3 dB
DVD 6CH 4 Hz-44 kHz, ± 3 dB
Input sensitivity and impedance
CD, TV, DVD / DVD 6CH, DVR / VCR1,
VCR2, TAPE 200 mV / 22 k Ω
©2004 Panasonic AVC Networks Singapore Pte.
Ltd. (RCB Registration Number: 197701580H) All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SA-XR70E
SA-XR70EB
SA-XR70EG
Colour
(S)... Silver Type
S / N at rated power (6 Ω
ΩΩ
Ω)
CD, TV, DVD,DVR / VCR1 (Digital
Input) 90 dB (IHF, A: 103 dB)
Tone controls
BASS 50 Hz, + 10 to -10 dB
TREBLE 20kHz,+10to-10dB
Output voltage
TAPE (SECOND AUDIO OUT), DVR /
VCR1 200 mV
Channel balance (250 Hz-6.3 kHz) ±1dB
Channel separation 55 dB
Subwoofer frequency response (-6 dB) 7 Hz-200 Hz
Digital input
(OPTICAL) 2
(COAXIAL) 2
Digital output
(OPTICAL) 1
HDMI input 1
HDMI output 1
nFM TUNER SECTION
Frequency range 87.50-108.00 MHz
Sensitivity
S/N30dB 1.5 µ V / 75 Ω
S/N26dB 1.3 µ V / 75 Ω
S/N20dB 1.2 µ V / 75 Ω
IHF usable sensitivity (IHF ‘ 58) 1.5 µ V / 75 Ω
IHF 46 dB stereo quieting sensitivity 22 µ V / 75 Ω
AV Control Receiver
Specification
ORDER NO. MD0408399C8

Total harmonic distortion
MONO 0.2 %
STEREO 0.3 %
S/N
MONO 60 dB
STEREO 58 dB
Frequency response
20 Hz-15 kHz +1dB,-2dB
Alternate channel selectivity
± 400 kHz 65 dB
Capture ratio 1.5 dB
Image rejection at 98 MHz 40 dB
IF rejection at 98 MHz 70 dB
Spurious response rejection at 98 MHz 70 dB
AM suppression 50 dB
Stereo separation
1 kHz 40 dB
Carrier leak
19 kHz -30 dB
38 kHz -50 dB
Channel balance (250 Hz-6.3 kHz) ±1.5dB
Limiting point 1.2 µ V
Bandwidth
IF amplifier 180 kHz
FM demodulator 1000 kHz
Antenna terminal 75 Ω(unbalanced)
nAM TUNER SECTION
Frequency range 522-1611 kHz
(9 kHz steps)
530-1620 kHz
(10 kHz steps)
1 Safety Precautions 4
1.1. GENERAL GUIDELINES 4
2 Caution for AC Mains Lead 5
3 Before Repair and Adjustment 6
4 Protection Circuitry 6
5 Handling the Lead Solder 6
5.1. About lead free solder (PbF) 6
6 Accessories 7
7 Operation Procedures 8
8 Disassembly and Main Component Replacement Procedures
and Operational Check 10
8.1. Disassembly of Top Cabinet. 10
8.2. Checking and Disassembly for DSP P.C.B. and Main
P.C.B. (A Side). 11
Sensitivity 20 µ V, 330 µ V / m
Selectivity (at 999 kHz) 55 dB
IF rejection (at 999 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(unbalanced)
S-Video
Input TV,DVD,DVR/VCR1,
VCR2
Output TV MONITOR
Component Video
Input TV, DVD
Output TV MONITOR
OSD Video Format PAL
nGENERAL
Power supply AC 230-240V, 50 Hz
Power consumption 135 W
Dimensions (W × H × D) 430 × 83 × 376 mm
Mass 4.5 kg
Power consumption in standby mode: 1.6 W
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.
8.3. Disassembly of Front Panel Assembly 13
8.4. Checking and Disassembly for Main P.C.B. (B Side) 14
8.5. Checking and Disassembly for HDMI P.C.B. (A / B Side)
and Input P.C.B. 15
8.6. Checking and Disassembly for Panel and Volume P.C.B.
16
8.7. Checking and Disassembly of Power P.C.B. and Speaker
B Terminal P.C.B. 17
9 Self Diagnosis Display Function 19
9.1. Automatically Displayed Error Codes 19
9.2. Display Details 19
9.3. Activating Self Diagnosis Function (Servicing Mode) 19
9.4. Activating Self Diagnosis Function (Doctor Mode) 20
9.5. Returning to Normal Display 21
CONTENTS
Page Page
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SA-XR70E / SA-XR70EB / SA-XR70EG

10 HDMI Checking Method 22
10.1. What is HDMI 23
10.2. Main features and benefits 23
10.3. Other features and benefits 23
11 Voltage Measurement 24
11.1. Input P.C.B. 24
11.2. Power P.C.B. 25
11.3. Panel P.C.B. 26
11.4. DSP (Side A) P.C.B. 26
11.5. DSP (Side B) P.C.B. 27
11.6. Main P.C.B. 29
11.7. HDMI (Side A) P.C.B. 32
11.8. HDMI (Side B) P.C.B. 33
12 Waveform Chart 34
13 Block Diagram 35
14 Notes of Schematic Diagram 46
15 Schematic Diagram 47
15.1. DSP CIRCUIT 47
15.2. MAIN (DIG 1) CIRCUIT 54
15.3. MAIN (DIG 2) CIRCUIT 61
15.4. INPUT CIRCUIT and TUNER EXTEND CIRCUIT 66
15.5. PANEL CIRCUIT 75
15.6. HEADPHONE CIRCUIT and VOLUME CIRCUIT 77
15.7. POWER CIRCUIT and SPEAKER B TERMINAL CIRCUIT
78
15.8. HDMI CIRCUIT 81
16 Printed Circuit Board 87
16.1. DSP P.C.B. 87
16.2. MAIN P.C.B. 88
16.3. INPUT P.C.B. 90
16.4. TUNER EXTEND P.C.B, HEADPHONE P.C.B, VOLUME
P.C.B and SPEAKER B TERMINAL P.C.B 92
16.5. PANEL P.C.B. 93
16.6. POWER P.C.B. 95
16.7. HDMI P.C.B. 97
17 Wiring Connection Diagram 101
18 Illustration of IC ’ s, Transistors and Diodes 103
19 Terminal Function of ICs 104
19.1. IC6901 (C2BBGF000565): Microprocessor 104
19.2. IC1014 (C2BBGF000566): Microprocessor 104
20 Parts Location and Replacement Parts List 106
20.1. Cabinet Parts Location 107
20.2. Electrical Part List 110
20.3. Packaging Materials & Accessories Parts List 129
20.4. Packaging 129
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SA-XR70E / SA-XR70EB / SA-XR70EG

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 outsideof the limits
specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is returned
to the customer.
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SA-XR70E / SA-XR70EB / SA-XR70EG

2 Caution for AC Mains Lead
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SA-XR70E / SA-XR70EB / SA-XR70EG

3 Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors (C707, C717, C718, C907) 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 230V - 240V, 50Hz in NO SIGNAL mode should be 100 mA ~ 500 mA.
4 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 areused.
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.
5 Handling the Lead Solder
5.1. 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 the soldering iron with temperaturecontrol, 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-XR70E / SA-XR70EB / SA-XR70EG

6 Accessories
Note : Refer to Packing Materials & Accessories Parts List (section 20.3) for part number.
AC cord (For EB
only).....1 pc
AC cord (For E &
EG only).....1 pc
FM antenna.....1 pc
AM loop antenna.....1 pc
Antenna adap
ter (For EB
only).....1 pc
Remote control.....1
pc
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SA-XR70E / SA-XR70EB / SA-XR70EG

7 Operation Procedures
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SA-XR70E / SA-XR70EB / SA-XR70EG

9
SA-XR70E / SA-XR70EB / SA-XR70EG

Some chassis components may have sharp edges.
Be careful when disassembling and servicing.
8.1. Disassembly of Top Cabinet.
Step 1 : Remove 7 screws.
Step 2 : Lift up the Top Cabinet and push backwards to remove
it.
8 Disassembly and Main Component Replacement
Procedures and Operational Check
“ATTENTION SERVICER”
· This section describes procedures for checking the operation of the major printed circuit boards and replacing the
main components.
· For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly
procedures are described only when required.
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SA-XR70E / SA-XR70EB / SA-XR70EG