Read Panasonic SA-HE90E / SA-HE90EB / SA-HE90EG Service Manual online
Table Of Contents
COVER
1 Before Repair and Adjustment
2 Protection Circuitry
3 Accessories
4 Caution for AC Main Lead
5 Front Panel Controls
6 Remote Control
7 Disassembly and Main Component Replacement Procedures
7.1 Disassembly Procedure for each major P.C.B.
7.2 Main Component Replacement Procedures
7.2.1 Replacement of the Power IC and Regulator Transistor
7.2.2 Instation of the bottom cover after replacement
8 Self-Diagnostic Function
8.1 Self-Diagnostic Function and Service Mode
8.1.1 Display Content
9 Type Illustrations of ICs, Transistors& Diodes
10 Terminal Functions of ICs
11 Block Diagram
12 Schematic Diagram
13 Printed Circuit Board
14 Wiring Connection Diagram
15 Parts Location and Replacement Parts List
15.1 Cabinet
15.1.1 Cabinet Parts Location
15.1.2 Cabinet Parts List
15.2 Components Parts List
15.3 Packing Materials& Accessories Parts List
15.4 Packaging
Service Manual
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ORDER NO. MD0204094C2
AV Control Receiver
SA-HE90E/SA-HE90EB/SA-HE90EG
●
Colour
(K) ... Black Type
(S) ... Silver Type
FM Tuner Section
Frequency range
87.50-108.00 MHz
Sensitivity
S/N 30 dB
S/N 26 dB
S/N 20 dB
IHF usable sensitivity (IHP’58)
IHF 46 dB stereo quieting sensitivity
Total harmonic distortion
MONO
0.2%
STEREO
0.3%
S/N
MONO
60 dB (73 dB, IHF)
STEREO
58 dB, (67 dB, IHF)
Frequency response
20 Hz -15 kHz,+1 dB, -2 dB
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 (-35 dB, IHF)
38 kHz
-50 dB (-55 dB, IHF)
Channel balance (250 Hz - 6.3 kHz)
±1.5 dB
Limiting point
1.2¼V
Bandwidth
IF amplifier
180 kHz
FM demodulator
1000 kHz
Antenna terminal
AM Tuner Section
Frequency range
522-1611 kHz (9 kHz steps)
530-1620 kHz (10 kHz steps)
Sensitivity
20¼V, 330¼V/m
Selectivity (at 999 kHz)
55 dB
IF rejection (at 999 kHz)
50 dB
Video Section
Output voltage at 1 V input (unbalanced)
1±0.1 Vp-p
Maximum input voltage
1.5 Vp-p
Input/output impedance
Amplifier Section
Power output
For E and EG only
230V
For EB only
240V
DIN 1 kHz (T.H.D. 1%)
40 Hz - 20 kHz continuous power output both channels driven
Total harmonic distortion
Rated power at 40 Hz-20 kHz
Half power at 1 kHz
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Power output at 1 kHz each channel drive
DIN 1 kHz (T.H.D. 1%)
Front
2 x 100 W (6©)
Center
100 W (6©)
Surround
2 x 100 W (6©)
Power bandwidth both channels driven, -3 dB
10Hz - 70 kHz (6©)
Damping factor
30 (6©)
Load impedance
Front
(A or B) 4-16©
(A and B) 8-16©
Center
6-16©
Surround
6-16©
Frequency response
CD, TAPE/MD, DVD, TV, VCR
10 Hz-40 kHz,±3 dB
Input sensitivity and impedance
CD, TAPE/MD, DVD, TV, VCR
200 mV/22 k©
S/N at rated power (6©)
CD, TAPE/MD, DVD, TV, VCR
75dB (IHF, A:85 dB)
Tone controls
BASS
50 Hz,+10 to -10 dB
TREBLE
20 kHz,+10 to -10 dB
Output voltage
TAPE/MD REC (OUT), VCR OUT
200 mV
Channel balance (250 Hz - 6.3 kHz)
±1 dB
Channel separation
55 dB
Headphones output level and impedance
430 mV/ 330©
Subwoofer frequency response (-6 dB)
7-200 Hz
General
Power supply
For E and EG only
AC 230 V, 50 Hz
For EB only
AC 230-240 V, 50 Hz
Power consumption
230 W
Dimensions (W x H x D)
430 x 158 x 390 mm
Mass
9.8 kg
Power consumption in standby mode:
2 W
Notes:
Specifications are subject to change without notice./Mass and dimensions are approximate.
1.
Total harmonic distortion is measured by the digital spectrum analyzer.
2.
* 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 registered trademarks of Digital Theater System.
© 2002 Matsushita Electronics (S) Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
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1 Before Repair and Adjustment
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Disconnect AC power, discharge Power Supply Capacitors C703 - C706, C901, C904 and C1702
through a 10 ©, 5 W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screw driver
blade, for instance), as this may destroy solid state devices.
through a 10 ©, 5 W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screw driver
blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid over current.
Current consumption at AC 230V, 50Hz in NO SIGNAL mode should be 200~600 mA.
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2 Protection Circuitry
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The protection circuitry may have operated if either of the following conditions are noticed:
No sound is heard when the power is turned on.
●
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 ofthe amplifier are used.
speaker connection wires are “shorted”, or if speaker systems with an impedance less than the indicated
rated impedance ofthe amplifier are used.
If this occurs, follow the procedure outlines below:
Turn off the power.
1.
Determine the cause of the problem and correct it.
2.
Turn on the power once again after one minute.
3.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and
then on again.
then on again.
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