SA-HT740GCP Datasheet PDF - Panasonic
| Part Number | SA-HT740GCP | |
| Description | DVD Home Theater Sound System Service Manual | |
| Manufacturers | Panasonic | |
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There is a preview and SA-HT740GCP download ( pdf file ) link at the bottom of this page. Total 30 Pages | ||
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ORDER NO.MD0605182C3
DVD Home Theater Sound System
SA-HT740GCP
Colour
(S).......................Silver Type
Specifications
lGeneral
Power Source:
Power consumption:
AC 110V-127V/ 220V-240V,
50/ 60Hz
155 W
Dimensions (W×H×D):
430×70×439.2 mm
Mass:
5 kg
lAmplifier section
RMS Output Power: Dolby Digital Mode
lTotal RMS Dolby Digital
mode Power:
1000 W
At 1kHz and total harmonic of 10%
lFront:
90 W/ Channel (4Ω)
lCenter:
320 W/ Channel (4Ω)
lSurround:
90 W/ Channel (4Ω)
At 100Hz and total harmonic of 10%
lSubwoofer:
PMPO Output Power:
320 W/ Channel (4Ω)
7500W
DIN Output Power: Dolby Digital Mode
lTotal DIN Dolby Digital
mode Power
740 W
At 1kHz and total harmonic of 1%
lFront:
65 W/ Channel (4Ω)
lCenter:
240 W/ Channel (4Ω)
lSurround:
65 W/ Channel (4Ω)
At 100Hz and total harmonic of 1%
lSubwoofer:
240 W/ Channel (4Ω)
DIN Output Power Stereo Mode
lTotal DIN Stereo mode
Power
360 W
At 1kHz and total harmonic of 1%
lFront:
60 W/ Channel (4Ω)
At 100Hz and total harmonic of 1%
lSubwoofer:
240 W/ Channel (4Ω)
lPreset Memory
FM 15 stations
AM/ MW 15 stations
lFM tuner section (FM)
Frequency Range:
87.5-108.0MHz
(50kHz step)
Sensitivity:
2.5µV (IHF)
S/N 26dB
2.2µV
Antenna Terminals:
75Ω (unbalanced)
lAM tuner section (AM/MW)
Frequency Range:
522-1629kHz (9kHz step)
520-1630kHz (10kHz step)
AM Sensitivity S/N 20dB at
999kHz:
560µV/m
© 2006 Panasonic AVC Networks Singapore Pte.
Ltd. All rights reserved. Unauthorized copying and
distribution is a violation of law.
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SA-HT740GCP
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 C5701, C5702, C5705, C5706, C5736, C5737, C5772 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 110-127V / 220-240 V, 50/ 60 Hz in NO SIGNAL mode volume minimal should be ~ 750 mA.
5
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