PIONEER AS-LX70/XJ/UC Service Manual

Cover page of PIONEER AS-LX70/XJ/UC Service Manual

Service Manual for PIONEER AS-LX70/XJ/UC, downloadable as a PDF file.

We also have owner's manual to this model.

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  • The manual has 141 pages
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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 2007
SX-LX70SW
RRV3674
AUDIO MULTI-CHANNEL RECEIVER SUBWOOFER
SX-LX70SW
ACCESSORY BOX
AS-LX70
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
This product is component of system.
Model
Type
Power Requirement
Remarks
SX-LX70SW
KUCXTW
AC 120 V
AS-LX70
XJ/UC
---
Component
System
Service Manual
Remarks
H5.1CH SURROUND SYSTEM
HTS-LX70
---------
AUDIO MULTI-CHANNEL RECEIVER SUBWOOFER
SX-LX70SW/KUCXTW
RRV3674
This manual
ACCESSORY BOX
AS-LX70/XJ/UC
RRV3674
This manual
SATELLITE SPEAKER
SSP-LX70ST/XTW/WL5
RRV3658
For details, refer to "Important Check Points for good servicing".
T-ZZV SEPT. 2007 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 2007
SX-LX70SW
RRV3674
AUDIO MULTI-CHANNEL RECEIVER SUBWOOFER
SX-LX70SW
ACCESSORY BOX
AS-LX70
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
This product is component of system.
Model
Type
Power Requirement
Remarks
SX-LX70SW
KUCXTW
AC 120 V
AS-LX70
XJ/UC
---
Component
System
Service Manual
Remarks
H5.1CH SURROUND SYSTEM
HTS-LX70
---------
AUDIO MULTI-CHANNEL RECEIVER SUBWOOFER
SX-LX70SW/KUCXTW
RRV3674
This manual
ACCESSORY BOX
AS-LX70/XJ/UC
RRV3674
This manual
SATELLITE SPEAKER
SSP-LX70ST/XTW/WL5
RRV3658
For details, refer to "Important Check Points for good servicing".
T-ZZV SEPT. 2007 printed in Japan
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SX-LX70SW
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SAFETY INFORMATION
1. SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.). Plug
the AC line cord of the appliance directly into a 120V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.
ANY
MEASUREMENTS
NOT WITHIN THE
LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL
SHOCK HAZARD AND MUST BE CORRECTED BEFORE
RETURNING THE APPLIANCE TO THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this Service Manual.
Electrical components having such features are
identified by marking with a
> on the schematics and on
the parts list in this Service Manual.
The use of a substitute replacement component which
does not have the same safety characteristics as the
PIONEER recommended replacement one, shown in the
parts list in this Service Manual, may create shock, fire,
or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to, or additional copies of,
PIONEER Service Manual may be obtained at a nominal
charge from PIONEER.
Leakage
current
tester
Reading should
not be above
0.5 mA
Device
under
test
Test all
exposed metal
surfaces
Also test with
plug reversed
(Using AC adapter
plug as required)
Earth
ground
AC Leakage Test
(FOR USA MODEL ONLY)
WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to
cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols
(fast operating fuse) and/or
(slow operating fuse) on PCB indicate that replacement parts must
be of identical designation.
REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible
(fusible de type rapide) et/ou
(fusible de type lent) sur CCI indiquent que les pièces
de remplacement doivent avoir la même désignation.
This service manual is intended for qualified service technicians ; it is not meant for the casual do-it-
yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained
to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.
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CONTENTS
SAFETY INFORMATION ..................................................................................................................................... 2
1. SERVICE PRECAUTIONS ............................................................................................................................... 5
2. SPECIFICATIONS ............................................................................................................................................ 6
2.1 ACCESSORIES ......................................................................................................................................... 6
2.2 SPECIFICATIONS...................................................................................................................................... 7
2.3 PANEL FACILITIES .................................................................................................................................... 8
3. BASIC ITEMS FOR SERVICE........................................................................................................................ 12
3.1 CHECK POINTS AFTER SERVICING..................................................................................................... 12
3.2 PCB LOCATIONS .................................................................................................................................... 13
3.3 JIGS LIST ................................................................................................................................................ 14
3.4 CLEANING............................................................................................................................................... 14
4. BLOCK DIAGRAM.......................................................................................................................................... 16
4.1 OVERALL WIRING CONNECTION DIAGRAM ....................................................................................... 16
4.2 OVERALL BLOCK DIAGRAM.................................................................................................................. 18
5. DIAGNOSIS.................................................................................................................................................... 20
5.1 HDMI TROUBLESHOOTING ................................................................................................................... 20
5.2 DSP TROUBLESHOOTING..................................................................................................................... 27
5.3 XM TROUBLESHOOTING....................................................................................................................... 42
5.4 SIRIUS TROUBLESHOOTING ................................................................................................................ 44
5.5 CIRCUIT DESCRIPTION OF DIGITAL AMP. SECTION .......................................................................... 45
5.6 SPECIFICATIONS FOR THE PROTECTION CIRCUITS FOR THE DIGITAL AMPLIFIER ..................... 46
5.7 CONDITIONS FOR SWITCHING THE ROTAIONS SPEED OF THE FAN.............................................. 47
5.8 ERROR LIST............................................................................................................................................ 48
6. SERVICE MODE ............................................................................................................................................ 52
6.1 TEST MODE ............................................................................................................................................ 52
6.2 SERVICE TEST MODE ........................................................................................................................... 54
7. DISASSEMBLY............................................................................................................................................... 57
8. EACH SETTING AND ADJUSTMENT ........................................................................................................... 62
8.1 ADJUSTMENT ......................................................................................................................................... 62
8.2 HOW TO UPDATE THE FLASH ROMS FOR VARIOUS MICROCOMPUTERS...................................... 62
8.3 HOW TO UPDATE THE DSP FLASH ROM BY PLAYING BACK A CD................................................... 64
9. EXPLODED VIEWS AND PARTS LIST.......................................................................................................... 66
9.1 PACKING (SX-LX70SW) .......................................................................................................................... 66
9.2 PACKING (AS-LX70)................................................................................................................................ 68
9.3 EXTERIOR SECTION.............................................................................................................................. 70
9.4 RECEIVER UNIT ..................................................................................................................................... 72
9.5 DISPLAY UNIT ......................................................................................................................................... 74
9.6 REMOTE CONTROL ............................................................................................................................... 76
10. SCHEMATIC DIAGRAM ............................................................................................................................... 78
10.1 MAIN ASSY (1/7) ................................................................................................................................... 78
10.2 MAIN ASSY (2/7) ................................................................................................................................... 80
10.3 MAIN ASSY (3/7) ................................................................................................................................... 82
10.4 MAIN ASSY (4/7) ................................................................................................................................... 84
10.5 MAIN ASSY (5/7) ................................................................................................................................... 86
10.6 MAIN ASSY (6/7) ................................................................................................................................... 88
10.7 MAIN ASSY (7/7) ................................................................................................................................... 90
10.8 AMP ASSY (1/2) .................................................................................................................................... 92
10.9 AMP ASSY (2/2) .................................................................................................................................... 94
10.10 CONNECTION and EARTH ASSYS .................................................................................................... 96
10.11 HDMI ASSY (1/2) ................................................................................................................................. 98
10.12 HDMI ASSY (2/2) ............................................................................................................................... 100
10.13 AINB ASSY ........................................................................................................................................ 102
10.14 FL, REMOCON and BTOB ASSYS ................................................................................................... 104
10.15 POWER SUPPLY UNIT...................................................................................................................... 106
11. PCB CONNECTION DIAGRAM ................................................................................................................. 109
11.1 MAIN ASSY ......................................................................................................................................... 110
11.2 AMP ASSY........................................................................................................................................... 114
11.3 CONNECTION ASSY .......................................................................................................................... 118
11.4 EARTH ASSYS .................................................................................................................................... 119
11.5 HDMI ASSY ......................................................................................................................................... 120
11.6 BTOB ASSY ......................................................................................................................................... 124
11.7 AINB ASSY .......................................................................................................................................... 125
11.8 FL ASSY .............................................................................................................................................. 127
11.9 POWER SUPPLY UNIT........................................................................................................................ 129
12. PCB PARTS LIST ....................................................................................................................................... 131
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1. SERVICE PRECAUTIONS
CAUTION
Ask users to bring both subwoofer receiver and the display unit together when servicing.
NOTES ON SOLDERING
· For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.
· Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40
°C.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373
°C in general, although
the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of
the soldering iron.
Do NOT use a soldering iron whose tip temperature cannot be controlled.
Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting
temperatures (hard to melt/easy to harden).
The following lead-free solders are available as service parts:
· Parts numbers of lead-free solder:
GYP1006 1.0 in dia.
GYP1007 0.6 in dia.
GYP1008 0.3 in dia.

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