PIONEER VSX-50/KUXU/CA Service Manual

Cover page of PIONEER VSX-50/KUXU/CA Service Manual

Service Manual for PIONEER VSX-50/KUXU/CA, 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 2003
SOUND MODE
INPUT SELECTOR
MASTER
VOLUME
PHONES
ADVANCED
NEO:6
AUTO
STANDBY/ON
PULL-
OPEN
DTS
2PRO LOGICII
2DIGITAL
DOWN
UP
VSX-50
RRV2797
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-50
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
This product is a system(s) component.
Model
Type
Power Requirement
Remarks
VSX-50
KUXU/CA
AC120V
Component
System
Service Manual
Remarks
DVD RECEIVER
EX-500
RRV2798
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-50
RRV2797
This Manual
DVD PLAYER
DV-50A
RRV2740
For details, refer to "Important symbols for good services".
T-ZZK JULY 2003 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 2003
SOUND MODE
INPUT SELECTOR
MASTER
VOLUME
PHONES
ADVANCED
NEO:6
AUTO
STANDBY/ON
PULL-
OPEN
DTS
2PRO LOGICII
2DIGITAL
DOWN
UP
VSX-50
RRV2797
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-50
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
This product is a system(s) component.
Model
Type
Power Requirement
Remarks
VSX-50
KUXU/CA
AC120V
Component
System
Service Manual
Remarks
DVD RECEIVER
EX-500
RRV2798
AUDIO/VIDEO MULTI-CHANNEL RECEIVER
VSX-50
RRV2797
This Manual
DVD PLAYER
DV-50A
RRV2740
For details, refer to "Important symbols for good services".
T-ZZK JULY 2003 printed in Japan
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SAFETY INFORMATION
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.
WARNING
This product contains lead in solder and cer tain electrical par ts contain chemicals which are known to the state of California to
cause cancer, bir th 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.
ANY MEASUREMENTS NOT WITHIN THE
LIMITS OUTLINED ABOVE ARE INDICATIVE
OF A POTENTIAL SHOCK HAZARD AND
MUST BE CORRECTED BEFORE RETURN-
ING THE APPLIANCE TO THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance
have special safety related character istics. 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 par ts which have these
special safety character istics are identified in this
Service Manual.
Electr ical 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
infor mation, always consult the current PIONEER
Ser vice Manual. A subscription to, or
additional copies
of, PIONEER Ser vice Manual may be obtained at a
nominal charge from PIONEER.
(FOR USA MODEL ONLY)
1. SAFETY PRECAUTIONS
The following check should be perfor med for the
continued protection of the customer and ser vice
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known ear th ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the ear th ground and all exposed
metal par ts of the appliance (input/output ter minals,
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.
Device
under
test
Leakage
current
tester
Earth
ground
Reading should
not be above
0.5 mA
Also test with
plug reversed
(Using AC adapter
plug as required)
Test all
exposed metal
surfaces
AC Leakage Test
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[ 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 ............................................................................................................................................ 5
2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 6
2.1 PACKING ................................................................................................................................................... 6
2.2 EXTERIOR SECTION................................................................................................................................ 8
2.3 INTERIOR SECTION ............................................................................................................................... 10
2.4 FRONT PANEL SECTION ....................................................................................................................... 12
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..........................................................................................14
3.1 BLOCK DIAGRAM ................................................................................................................................... 14
3.1.1 AUDIO BLOCK .................................................................................................................................. 14
3.1.2 VIDEO AND POWER SUPPLY BLOCKS .......................................................................................... 16
3.2 OVERALL WIRING DIAGRAM................................................................................................................. 18
3.3 VIDEO ASSY ........................................................................................................................................... 20
3.4 AUDIO INPUT ASSY ............................................................................................................................... 22
3.5 MOTHER ASSY (1/5)............................................................................................................................... 24
3.6 MOTHER ASSY (2/5) and DSP KAWA ASSY .........................................................................................26
3.7 MOTHER ASSY (3/5)............................................................................................................................... 28
3.8 MOTHER ASSY (4/5)............................................................................................................................... 30
3.9 MOTHER ASSY (5/5)............................................................................................................................... 32
3.10 DSP ASSY (1/2)..................................................................................................................................... 34
3.11 DSP ASSY (2/2)..................................................................................................................................... 36
3.12 FRONT IN and AMP KAWA ASSYS ...................................................................................................... 38
3.13 6CH AMP ASSY .................................................................................................................................... 40
3.14 AMP OUT ASSY .................................................................................................................................... 42
3.15 ENCODER, FRONT and 1P-SW ASSYS .............................................................................................. 44
3.16 PRIMARY, D5V, 12V and VHVL ASSYS ................................................................................................ 46
3.17 FM/AM TUNER MODULE ...................................................................................................................... 48
4. PCB CONNECTION DIAGRAM ..................................................................................................................... 50
4.1 FM/AM TUNER MODULE ........................................................................................................................ 51
4.2 AUDIO INPUT and 12V ASSYS............................................................................................................... 52
4.3 MOTHER, DSP KAWA and D5V ASSYS ................................................................................................. 54
4.4 DSP ASSY ............................................................................................................................................... 58
4.5 FRONT IN ASSY...................................................................................................................................... 60
4.6 AMP KAWA ASSY ................................................................................................................................... 61
4.7 6CH AMP ASSY ...................................................................................................................................... 62
4.8 AMP OUT ASSY ...................................................................................................................................... 64
4.9 ENCODER, FRONT and 1P-SW ASSYS ................................................................................................ 66
4.10 PRIMARY ASSY .................................................................................................................................... 70
4.11 VHVL ASSY ........................................................................................................................................... 71
4.12 VIDEO ASSYS ....................................................................................................................................... 72
4.13 S-VIDEO ASSYS ................................................................................................................................... 73
5. PCB PARTS LIST ........................................................................................................................................... 74
6. ADJUSTMENT ............................................................................................................................................... 80
6.1 TUNER SECTION .................................................................................................................................... 80
7. GENERAL INFORMATION ............................................................................................................................. 81
7.1 DIAGNOSIS ............................................................................................................................................. 81
7.1.1 Test Mode .......................................................................................................................................... 81
7.1.2 Protection Circuit ............................................................................................................................... 82
7.1.3 Specifications of Speaker Detection .................................................................................................. 83
7.1.4 Circuit Description ............................................................................................................................. 84
7.1.5 Troubleshooting.................................................................................................................................. 85
7.1.6 Timing Chart ...................................................................................................................................... 87
7.2 PARTS...................................................................................................................................................... 91
7.2.1 IC ....................................................................................................................................................... 91
7.2.2 DISPLAY ............................................................................................................................................ 97
7.3 CLEANING............................................................................................................................................... 98
8. PANEL FACILITIES ........................................................................................................................................ 99
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1. SPECIFICATIONS
Amplifier section
Continuous average power output of 42 watts* per
channel, min., at 6 ohms, from 20 Hz to 20,000 Hz with
no more than 0.9 %** total harmonic distortion (front).
Continuous Power Output (
STEREO mode)
Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 W + 42 W
(FTC 20­20 kHz, THD 0.9 %, 6
)
RMS Power Output
Front. . . . . . . . . . . . . . . . . .100 W/ch (1 kHz, THD 10 %, 6
)
Center . . . . . . . . . . . . . . . . . .100 W ( 1 kHz, THD 10 %, 6
)
Surround. . . . . . . . . . . . . .100 W/ch ( 1 kHz, THD 10 %, 6
)
Surround back . . . . . . . . . . . 100 W ( 1 kHz, THD 10 %, 6
)
Audio section
Input (Sensitivity/Impedance). . . . . . . . . . . . . . .200 mV/47 k
Output (Level/Impedance)
DVR/VCR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 mV/2.2 k
*
Measured pursuant to the Federal Trade Commission's Trade
Regulation rule on Power Output Claims for Amplifiers.
**
Measured by Audio Spectrum Analyzer.
Video section
Input (Sensitivity/Impedance). . . . . . . . . . . . . . . .1 Vp-p/75
Output (Level/Impedance). . . . . . . . . . . . . . . . . . 1 Vp-p/75
FM tuner section
Frequency Range . . . . . . . . . . . . . . . . 87.5 MHz to 108 MHz
Usable Sensitivity. . . . . . .Mono:13.2 dBf, IHF (1.3
µV/ 75 )
50 dB Quieting Sensitivity . . . . . . . . . . . . . . .Mono: 20.2 dBf
Stereo: 38.6 dBf
Signal-to-Noise Ratio. . . . . . . . . . . .Mono: 76 dB (at 85 dBf)
Stereo: 72 dB (at 85 dBf)
Distortion. . . . . . . . . . . . . . . . . . . . . . . Stereo: 0.6 % (1 kHz)
Alternate Channel Selectivity . . . . . . . . . . . 60 dB (400 kHz)
Stereo Separation. . . . . . . . . . . . . . . . . . . . . . 40 dB (1 kHz)
Frequency Response . . . . . . . . . . . 30 Hz to 15 kHz (
±1dB)
Antenna Input (DIN). . . . . . . . . . . . . . . . . .75
unbalanced
AM tuner section
Frequency Range . . . . . 530 kHz to 1,700 kHz (10 kHz step)
Sensitivity (IHF, Loop antenna). . . . . . . . . . . . . . . .350
µV/m
Selectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 dB
Signal-to-Noise Ratio. . . . . . . . . . . . . . . . . . . . . . . . . . .50 dB
Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Loop antenna
Miscellaneous
Power Requirements . . . . . . . . . . . . . . . . . . AC 120 V, 60 Hz
Power Consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . 170 W
In standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 W
Dimensions. . . . . . . . 16 /16 (W) x 2
/16 (H) x 15 /8 (D) in.
913
1
Weight (without package) . . . . . . . . . . . . . . . . . . . . . . .15 lb.
Furnished parts
Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Microphone stand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Coaxial cable (black). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Video cable (yellow). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Audio cable (black). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Stereo audio cable (red/white). . . . . . . . . . . . . . . . . . . . . . . 1
SR mini-plug cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
SR+ mini-plug cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
AM loop antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
FM wire antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Power cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Dry cell batteries (AA size IEC R6P) . . . . . . . . . . . . . . . . . . 2
Remote control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Quick Setup Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Speaker cable labels. . . . . . . . . . . . . . . . . . . . . . . . . .1 sheet
Warranty card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Note
· Specifications and the design are subject to possible
modifications without notice, due to improvements.
Manufactured under license from Dolby Laboratories.
"Dolby", "Pro Logic", "Surround EX" and the double-D
symbol are trademarks of Dolby Laboratories.
"DTS", "DTS-ES Extended Surround", "Neo:6" and "DTS 96/
24" are trademarks of Digital Theater Systems, Inc.
FRONT
FRONT
FRONT
FRONT
CENTER
R
R
R
R
L
L
L
L
CENTER
SURROUND
SURROUND
SURROUND
SURROUND
SURROUND
BACK
SURROUND
BACK
Accessories
· Remote Control Unit
(AXD7363)
· Power Cable
(ADG7021)
· Microphone
(APM7004)
· Microphone stand
(AEB7313)
· SR+ mini-plug cable
(ADE7095)
· SR mini-plug cable
(PDE1297)
· FM wire antenna
(ADH7004)
· AM loop antenna
(ATB7009)
· Coaxial cable (black)
Audio cable (black)
(ADE7087)
· Video cable (yellow)
(VDE1055)
· Stereo audio cable
(red/white)
(VDE1054)
· Speaker cable labels
(ARW7232)
· Dry Cell Battery
(AA size IEC R6P)
(VEM1030)
DVD RECEIVER
SOURCE
RECEIVER
SYSTEM OFF
OPEN/CLOSE
RECEIVER
SLEEP
DVD
TV/SAT
DVR/VCR
FM/AM
SIGNAL
INPUT
SURROUND
ADVANCED
SURROUND
SOUND
MODE
SBch MODE
DISPLAY
DIALOG
AUTO
STEREO
SUBTITLE
ANGLE
PLAY MODE
AUDIO
MUTE
MASTER
VOLUME
DTV MENU
TOP MENU
T.EDIT
MENU
RETURN
MCACC
SETUP
HOME
MENU
TUNE
TUNE
ST
ST
RECEIVER
SETUP
BAND
DTV ON/OFF
DISPLAY
/ +10
CLASS
MPX
D.ACCESS
ENTER
ENTER
CLEAR
CH SELECT
GUIDE
TEST TONE
TV CONTROL
CHANNEL
ZOOM
SURROUND
DIMMER
CHANNEL
VOLUME
INPUT

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