PIONEER RS-A7/EW5 Service Manual

Cover page of PIONEER RS-A7/EW5 Service Manual

Service Manual for PIONEER RS-A7/EW5, downloadable as a PDF file.

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ORDER NO.
PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2004
RS-A7/EW
CRT3231
OPTICAL DIGITAL REFERENCE SYSTEM DIGITAL POWER AMPLIFIER
RS-A7
/EW
For details, refer to "Important symbols for good services".
K-ZZU.APR. 2004 printed in Japan
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ORDER NO.
PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2004
RS-A7/EW
CRT3231
OPTICAL DIGITAL REFERENCE SYSTEM DIGITAL POWER AMPLIFIER
RS-A7
/EW
For details, refer to "Important symbols for good services".
K-ZZU.APR. 2004 printed in Japan
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SAFETY INFORMATION
- Service Precaution
1. You should conform to the regulations governing the product
(safety, radio and noise, and other regulations), and should keep
the safety during servicing by following the safety instructions
described in this manual.
[ Important symbols for good services ]
In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.
When you find the procedures bearing any of the symbols, be sure to fulfill them:
2. Adjustments
To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.
In accordance with the procedures or instructions described in this manual, adjustments should be performed.
3. Cleaning
For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,
proper cleaning should be performed to restore their performances.
5. Lubricants, glues, and replacement parts
Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying
glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the
prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed
ones should be used.
4. Shipping mode and shipping screws
To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or
the shipping screws should be installed before shipping out in accordance with this manual, if necessary.
1. Product safety
You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and
should keep the safety during servicing by following the safety instructions described in this manual.
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CONTENTS
SAFETY INFORMATION......................................................................................................................................2
1. SPECIFICATIONS .............................................................................................................................................4
2. EXPLODED VIEWS AND PARTS LIST.............................................................................................................6
2.1 PACKING ....................................................................................................................................................6
2.2 EXTERIOR .................................................................................................................................................8
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..........................................................................................10
3.1 BLOCK DIAGRAM ....................................................................................................................................10
3.2 AMP UNIT(GUIDE PAGE) ........................................................................................................................14
3.3 AUDIO UNIT(GUIDE PAGE) .....................................................................................................................20
3.4 CONTROL UNIT(GUIDE PAGE)...............................................................................................................26
3.5 SWITCH PCB ...........................................................................................................................................32
4. PCB CONNECTION DIAGRAM ......................................................................................................................34
4.1 AMP UNIT(GUIDE PAGE) ........................................................................................................................34
4.2 AUDIO UNIT(GUIDE PAGE) .....................................................................................................................46
4.3 CONTROL PCB(GUIDE PAGE)................................................................................................................58
4.4 SWITCH PCB ...........................................................................................................................................70
4.5 USB PCB AND IPIN PCB .........................................................................................................................71
4.6 Ach PCB AND IPOUT PCB ......................................................................................................................72
4.7 Bch PCB ...................................................................................................................................................73
5. ELECTRICAL PARTS LIST .............................................................................................................................74
6. ADJUSTMENT ................................................................................................................................................87
6.1 AMP UNIT ADJUSTMENT .......................................................................................................................87
6.2 AUDIO UNIT ADJUSTMENT ....................................................................................................................90
7. GENERAL INFORMATION .............................................................................................................................94
7.1 DIAGNOSIS ..............................................................................................................................................94
7.1.1 DISASSEMBLY......................................................................................................................................94
7.1.2 PCB LOCATIONS ..................................................................................................................................96
7.1.3 CONNECTOR FUNCTION DESCRIPTION ..........................................................................................97
7.2 IC ..............................................................................................................................................................98
7.3 OPERATIONAL FLOW CHART ..............................................................................................................106
8. OPERATIONS ...............................................................................................................................................107
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1. SPECIFICATIONS
GENERAL
Power Source...............DC 14.4V (10.8--15.1V allowable)
Grounding system.........................................Negative type
Max. current consumption
(Rated Power) .......................................................31A
(No Signal) ..............................................................5A
Average current consumption
(4ch,4
) ...............................................................12A
(2ch,4
) ............................................................16.5A
Fuse..........................................................................25Ax2
Dimensions................................330(W)x71(H)x585(D)mm
Weight.........................................................................13kg
POWER AMP
Max. power (14.4 V)
................................................100Wx4 / 300Wx2 (4
)
Continuous power (14.4 V)
..........................................................50Wx4 / 150Wx2
(20 - 20k Hz, 0.02/0.02% (4
))
..........................................................................75Wx4
(20-20k Hz, 0.02% (2
))
Frequency response.................10Hz--100kHz (+0, ­1dB)
Distortion.................................0.002% (1kHz, 20kHz LPF)
Signal-to-noise ratio.......................105dB (IHF-A network)
Separation...................80dB (100Hz--10kHz, 20kHz LPF)
Slew Rate.........................................................100 V/µsec.
Dumping Factor............................................................150
Impedance.......................................................4
(2--8)
Sampling frequency .............................................44.1kHz
Digital input ........................................................Optical (2)
Note:
· Specifications and the design are subject to possi-
ble modification without notice due to improve-
ments.
Backup current.................................................3mA or less
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