Pioneer PRS-A500/X1H/EW User manual

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
C PIONEER CORPORATION 2004 K-ZZB. DEC. 2004 Printed in Japan
ORDER NO.
CRT3353
BRIDGEABLE POWER AMPLIFIER
PRS-A500/X1H/EW
Service
Manual
PRS-A500/X1H/EW
For details, refer to "Important check points for good servicing".

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SAFETY INFORMATION
CAUTION
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.
-Service Precaution
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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[Important Check Points for Good Servicing]
In this manual, procedures that must be performed during repairs are marked with the below symbol.
Please be sure to confirm and follow these procedures.
1. Product safety
Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by
following the safety instructions described in this manual.
1Use specified parts for repair.
Use genuine parts. Be sure to use important parts for safety.
2Do not perform modifications without proper instructions.
Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as
radio/TV interference and foreign noise.
3Make sure the soldering of repaired locations is properly performed.
When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)
4Make sure the screws are tightly fastened.
Please be sure that all screws are fastened, and that there are no loose screws.
5Make sure each connectors are correctly inserted.
Please be sure that all connectors are inserted, and that there are no imperfect insertion.
6Make sure the wiring cables are set to their original state.
Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.
7Make sure screws and soldering scraps do not remain inside the product.
Please check that neither solder debris nor screws remain inside the product.
8There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.
Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.
9There should be no spark traces or similar marks on the power plug.
When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure
connections and suitable usage. Please exchange the power cord if necessary.
0Safe environment should be secured during servicing.
When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.
Please pay attention to your surroundings and repair safely.
2. Adjustments
To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.
4. Cleaning
For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper
cleaning should be performed to restore their performances.
3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance.
Make sure the proper amount is applied.
5. Shipping mode and Shipping screws
To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be
installed before shipment. Please be sure to follow this method especially if it is specified 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............................................................8
3. SCHEMATIC DIAGRAM...........................................10
3.1 SCHEMATIC DIAGRAM (GUIDE PAGE) ...........10
4. PCB CONNECTION DIAGRAM................................16
4.1 AMP UNIT..........................................................16
5. ELECTRICAL PARTS LIST........................................20
6. ADJUSTMENT.........................................................24
7. GENERAL INFORMATION.......................................25
7.1 DIAGNOSIS .......................................................25
7.1.1 DISASSEMBLY.........................................25
7.1.2 CONNECTOR FUNCTION DESCRIPTION ......26
8. OPERATIONS...........................................................27

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1. SPECIFICATIONS
Power source .......................................................................................................... 14.4 V DC (10.8 — 15.1 V allowable)
Grounding system .......................................................................................................................................... Negative type
Current consumption ........................................................................................................ 25 A (at continuous power, 4 Ω)
Backup current ................................................................................................................................................ 1 mA or less
Average current drawn* ........................................................................................................ 8.5 A (4 Ωfor two channels)
14.2 A (4 Ωfor one channel)
Fuse ........................................................................................................................................................................ 20 A ×2
Dimensions ...................................................................................................................... 300 (W) ×63 (H) ×330 (D) mm
Weight .................................................................................................................... 5.8 kg (Leads for wiring not included)
Maximum power output .................................................................................................................. 200 W ×2 / 600 W ×1
Continuous power output ............................................................ 100 W ×2 (at 14.4 V, 4 Ω, 20 — 20 kHz 0.08% THD)
300 W ×1 (at 14.4 V, 4 Ω, 20 — 20 kHz 0.8% THD)
150 W ×2 (at 14.4 V, 2 Ω, 20 — 20 kHz 0.8% THD)
Continuous power output (DIN power) ................................................ 140 W ×2 / 500 W ×1 (DIN45324, +B=14.4 V)
Load impedance .......................................................................................................................... 4 Ω(2 — 8 Ωallowable)
(Bridge connection: 4 — 8 Ωallowable)
Frequency response ........................................................................................................ 10 Hz — 80 kHz (+0 dB, –1 dB)
Signal-to-noise ratio .................................................................................................................... 107 dB (IEC-A network)
Distortion ........................................................................................................................................ 0.003 % (10 W, 1 kHz)
Separation .................................................................................................................................. 70 dB (100 Hz — 10 kHz)
Slew rate.............................................................................................................................................................. 40 V/µ sec.
Damping factor .............................................................................................................................................................. 100
Low pass filter .................................................................................................................. Cut off frequency: 40 — 120 Hz
Cut off slope: –12 dB/oct
High pass filter.................................................................................................................. Cut off frequency: 40 — 120 Hz
Cut off slope: –12 dB/oct
Gain control .............................................................................................................................................. 200 mV — 6.5 V
Maximum input level / impedance ...................................................................................................... RCA: 6.5 V / 22 kΩ
Note:
• Specifications and the design are subject to possible modification without notice due to improvements.
*Average current drawn
• The average current drawn is nearly the maximum current drawn by this unit when an audio signal is input. Use this value when
working out total current drawn by multiple power amplifiers.

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2. EXPLODED VIEWS AND PARTS LIST
8
3
1
5
5
6
4
2
7
NOTE:
-Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List.
-The >mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
-Screws adjacent to ∇mark on the product are used for disassembly.
-For the applying amount of lubricants or glue, follow the instructions in this manual.
( In the case of no amount instructions, apply as you think it appropriate.)
2.1 PACKING

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-PACKING SECTION PARTS LIST
-Owner's Manual
Part No. Language
HRD0280 English, Spanish, German, French, Italian, Dutch
1 Screw BYC40P180FZK
2 Cover HNS0112
3 Polyethylene Bag HEG0011
4 Contain Box HHL0446
5 Protector HHP0266
6 Carton HHG0446
7 Polyethylene Bag HEG0022
8-1 Owner’s Manual HRD0280
* 8-2 Warranty Card HRY1157
Mark No. Description Part No.

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36
36
36
36 35
19
18 6
6
7
7
2
2
3
33
3
3
2
1
11
2
34
4
44
13
13
13 13 10
33
33 33
33
5
5
5
5
5
5
8
1
5
5
5
9
1
17
14
32
34
34
34
34
34 33
3
330 30
25
23
24 27
26
28
29
29
30
1
4
4
4
4
7
7
7
20
20
20
13
13
13
13
22
11 11
20 20
20
20
31
12
21
20
16 16
16 16
15
15
2.2 EXTERIOR
A

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1 Screw BBZ30P060FTC
2 Screw BBZ30P080FTC
3 Screw BBZ30P120FTC
4 Screw BMZ30P050FTC
5 Screw BSZ30P050FZK
6 Screw HBA0028
7 Stud HLA0022
8 Case HNB0220
9 Panel HNB0224
10 Panel HNB0225
11 Clip HNC0054
12 Buss Bar HNC0172
13 Clip HNC0189
14 Holder HNC0213
15 Insulator HNM0208
16 Insulator HNM0216
17 Insulator HNM0217
18 Heatsink HNR0252
19 Plate HNS0122
20 Spacer HNV0016
21 Amp Unit HWH0217
22 Pin Jack(CN801) HKB0027
23 Fuse Holder(CN602) HKE0012
24 Fuse Holder(CN603) HKE0012
25 Terminal(CN851) HKE0021
26 Terminal(CN852) HKE0021
27 Terminal(CN601) HKE1054
28 Terminal(CN604) HKF0001
>29 Fuse(FU602,603)(20A) HEK0020
30 Screw PPZ30P100SAD
31 Light Pipe HXA0426
32 Screw PPZ30P080FZK
33 Screw PPZ30P120FZK
34 Screw BBZ30P060FZK
* 35 Badge HAM0036
36 Screw HBA1639
Mark No. Description Part No.
-EXTERIOR SECTION PARTS LIST

A-a A-b
A-a A-b
A-b
A-a
Large size
SCH diagram
Guide page
Detailed page
Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or
"ELECTRICAL PARTS LIST". A-a
A
N
>
>
>
>
>
>
>
>
LPF/HPF
FREQ
GAIN
+15.4V +/- 1V
-15.4V +/- 1V
+15.4V +/- 1V
-15.4V +/- 1V
+39.1V +/- 3V
-39.1V +/- 3V
+37.1V +/- 3V
-37.1V +/- 3V
+39.1V +/- 3V
-39.1V +/- 3V
+37.1V +/- 3V
-37.1V +/- 3V
+37.1V
-37.1V
+39.1V
-39.1V
+37.1V
-37.1V
+39.1V
-39.1V
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3. SCHEMATIC DIAGRAM
3.1 SCHEMATIC DIAGRAM (GUIDE PAGE)

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PRS-A500/X1H/EW
A-b
A-a A-b
A-a A-b
A-b
A-a
A
Decimal points for resistor
and capacitor fixed values
are expressed as :
2.2 2R2
0.022 R022
←
←
The >mark found on some component parts indicates
the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of
identical designation.
Symbol indicates a resistor.
No differentiation is made between chip resistors and
discrete resistors.
NOTE :
Symbol indicates a capacitor.
No differentiation is made between chip capacitors and
discrete capacitors.
>
>
AAMP UNIT
BFC
+37.1V
+14.4V +0.7V
+37.1V
0.0V
0.0V
IC601 VOLTAGES
1 15.0V
2 10.4V
3 14.2V
4 14.4V
5 0.2V
6 0.0V
7 0.0V
8 0.0V
9 0.0V
10 0.0V
11 0.0V
12 0.0V
13 5.0V
14 0.0V
15 0.0V
16 0.0V

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A-a A-b A-a
A-a
A-b 1234
>
>
LPF/HPF
FREQ
GA
+15.4V +/- 1V
-15.4V +/- 1V
+15.4V +/- 1V
-15.4V +/- 1V
+39.1V +/- 3V
-39.1V +/- 3V
+37.1V +/- 3V
-37.1V +/- 3V
+39.1V +/- 3V
-39.1V +/- 3V
+37.1V +/- 3V
-37.1V +/- 3V
+37.1V

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A-a A-b A-a
A-a
A-b
567
>
>
>
>
>
>
>
>
+37.1V
-37.1V
+39.1V
-39.1V
+37.1V
-37.1V
+39.1V -39.1V

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A-a A-b
A-b 1234
AAMP UNIT
GAIN
+37.1V
+14.4V +0.7V
+37.1V
0.0V

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A-a A-b
A-b
567
Decimal points for resistor and capacitor fixed values are expressed as : 2.2 2R2 0.022 R022
←
←
The >mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation.
Symbol indicates a resistor. No differentiation is made between chip resistors and discrete resistors.
NOTE :
Symbol indicates a capacitor. No differentiation is made between chip capacitors and discrete capacitors.
>
>
BFC
+37.1V
0.0V
IC601 VOLTAGES 1 15.0V 2 10.4V 3 14.2V 4 14.4V 5 0.2V 6 0.0V 7 0.0V 8 0.0V 9 0.0V
10 0.0V 11 0.0V 12 0.0V 13 5.0V 14 0.0V 15 0.0V 16 0.0V

4. PCB CONNECTION DIAGRAM
4.1 AMP UNIT
Capacitor
Connector
P.C.Board Chip Part
A
AAMP UNIT
SIDE B
SIDE A
NOTE FOR PCB DIAGRAMS
1.The parts mounted on this PCB
include all necessary parts for
several destination.
For further information for
respective destinations, be sure
to check with the schematic dia-
gram.
2.Viewpoint of PCB diagrams
LPF/HPF
FREQ
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A
SIDE A

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PRS-A500/X1H/EW
A
AAMP UNIT

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A
SIDE B

Unit Number : HWH0217
Unit Name : Amp Unit
MISCELLANEOUS
IC 101 (A,36,72) IC NJM2068D
IC 102 (A,46,133) IC NJM2068D
IC 103 (A,54,88) IC NJM2068D
IC 104 (A,70,130) IC NJM2068D
IC 301 (A,70,88) IC LT1357CN8
IC 302 (A,70,146) IC LT1357CN8
IC 601 (A,131,115) IC PA2027A
IC 602 (A,189,117) IC UPC494C
IC 801 (A,19,72) IC LT1358CN8
IC 802 (A,17,141) IC LT1358CN8
Q 401 (A,55,79) Transistor 2SA1048
Q 402 (A,56,168) Transistor 2SA1048
Q 403 (A,96,81) Transistor 2SC2458
Q 404 (A,95,162) Transistor 2SC2458
Q 405 (A,50,75) Transistor 2SA992
Q 406 (A,52,166) Transistor 2SA992
Q 407 (A,101,77) Transistor 2SC1845
Q 408 (A,101,167) Transistor 2SC1845
Q 409 (A,64,71) Transistor 2SC1845
Q 410 (A,64,173) Transistor 2SC1845
Q 411 (A,87,73) Transistor 2SA992
Q 412 (A,87,170) Transistor 2SA992
Q 413 (A,50,55) Transistor 2SA992
Q 414 (A,50,192) Transistor 2SA992
Q 415 (A,101,59) Transistor 2SC1845
Q 416 (A,101,185) Transistor 2SC1845
Q 501 (A,82,28) Transistor 2SC1568
Q 502 (A,77,215) Transistor 2SC1568
Q 503 (A,64,57) Transistor 2SC2240
Q 504 (A,64,187) Transistor 2SC2240
Q 505 (A,87,59) Transistor 2SA970
Q 506 (A,87,184) Transistor 2SA970
Q 507 (A,44,28) FET 94-4612
Q 508 (A,39,215) FET 94-4612
Q 509 (A,62,28) FET 94-4633
Q 510 (A,57,215) FET 94-4633
Q 511 (A,102,28) FET 94-4612
Q 512 (A,97,215) FET 94-4612
Q 513 (A,120,28) FET 94-4633
Q 514 (A,115,215) FET 94-4633
Q 601 (A,130,103) Transistor 2SC2458
Q 602 (A,121,108) Transistor 2SA1048
Q 603 (A,162,107) Transistor 2SB1243
Q 604 (A,198,135) Transistor 2SA1048
Q 605 (A,222,123) Transistor 2SC2458
Q 606 (A,222,114) Transistor 2SC2458
Q 607 (A,226,132) Transistor 2SA1048
Q 608 (A,226,116) Transistor 2SA1048
Q 609 (A,243,119) Transistor 2SD1858
Q 610 (A,243,124) Transistor 2SD1858
Q 611 (A,243,109) Transistor 2SD1858
Q 612 (A,243,135) Transistor 2SD1858
Q 613 (A,243,116) Transistor 2SB1237
Q 614 (A,243,128) Transistor 2SB1237
Q 615 (A,243,112) Transistor 2SB1237
Q 616 (A,243,131) Transistor 2SB1237
Q 617 (A,241,28) FET IRF1010N
Q 618 (A,236,215) FET IRF1010N
Q 619 (A,259,28) FET IRF1010N
Q 620 (A,254,215) FET IRF1010N
Q 623 (A,227,28) FET IRF1010N
Q 624 (A,222,215) FET IRF1010N
Q 625 (A,209,28) FET IRF1010N
Q 626 (A,204,215) FET IRF1010N
Q 629 (A,117,77) Transistor 2SD1864
Q 630 (A,117,161) Transistor 2SD1864
Q 631 (A,121,60) Transistor 2SB1243
Q 632 (A,121,180) Transistor 2SB1243
Q 701 (A,119,138) Transistor DTA114ES
Q 702 (A,126,143) Transistor DTC114TS
Q 703 (A,139,138) Transistor 2SC2458
Q 704 (A,135,143) Transistor DTC114TS
Q 901 (A,30,52) Transistor 2SD1768S
Q 902 (A,47,191) Transistor 2SD1768S
Q 905 (A,91,116) Transistor 2SA1048
Q 906 (A,81,111) Transistor 2SC2458
Q 907 (A,85,111) Transistor 2SC2458
Q 909 (A,105,116) Transistor 2SA1048
D 401 (A,59,74) Diode 1SS133
D 402 (A,59,170) Diode 1SS133
D 403 (A,87,76) Diode 1SS133
D 404 (A,87,167) Diode 1SS133
D 405 (A,55,69) Diode 1SS133
D 406 (A,55,177) Diode 1SS133
D 407 (A,101,71) Diode 1SS133
D 408 (A,101,173) Diode 1SS133
D 501 (A,76,66) Diode HZS5(C3)
D 502 (A,76,177) Diode HZS5(C3)
D 503 (A,84,64) Diode HZS9L(A1)
D 504 (A,84,184) Diode HZS9L(A1)
D 505 (A,84,51) Diode 1SS133
D 506 (A,84,192) Diode 1SS133
D 601 (A,269,156) Diode RM4Z-LFJ4
D 602 (A,138,103) Diode HZS7L(B2)
D 603 (A,123,114) Diode ERA15-02VH
=====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ -------------------------
A
20
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PRS-A500/X1H/EW
NOTE:
Parts whose parts numbers are omitted are subject to being not supplied.
The part numbers shown below indicate chip components.
Chip Resistor
RS1/_S___J,RS1/__S___J
Chip Capacitor (except for CQS.....)
CKS....., CCS....., CSZS.....
The >mark found on some component parts indicatesthe importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
Meaning of the figures and others in the parentheses in the parts list.
Example) IC 301 is on the point (face A, 91 of x-axis, and 111 of y-axis) of the corresponding
PC board.
IC 301 (A, 91, 111) IC NJM2068V
5. ELECTRICAL PARTS LIST