Pioneer PRS-X720 User manual

PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER ELECTRONIC CORPORATION 1999 K-ZZA. FEB. 1999 Printed in Japan
ORDER NO.
CRT2361
BRIDGEABLE POWER AMPLIFIER
PRS-X720 X1R/UC
Service
Manual
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST.......................2
3. SCHEMATIC DIAGRAM ...........................................10
4. PCB CONNECTION DIAGRAM ................................28
5. ELECTRICAL PARTS LIST ........................................40
6. ADJUSTMENT..........................................................48
7. GENERAL INFORMATION .......................................49
7.1 IC .........................................................................49
7.2 DISASSEMBLY ...................................................50
8. OPERATIONS AND SPECIFICATIONS.....................51
PRS-X320 X1R/UC
PRS-X220 X1R/UC
PRS-X720/X1R/UC

2
PRS-X720,X320,X220
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.
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
1. SAFETY INFORMATION
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING

PRS-X720,X320,X220
3
-Owner’s Manual
Model Part No. Language
PRS-X720/X1R/UC HRD0087 English, French
PRS-X320/X1R/UC
PRS-X220/X1R/UC
-PACKING SECTION PARTS LIST
NOTE:
-Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List.
-Screws adjacent to ∇mark on the product are used for disassembly.
Part No.
Mark No. Description PRS-X720/X1R/UC PRS-X320/X1R/UC PRS-X220/X1R/UC
1 Screw Assy HEA0047 HEA0047 HEA0047
2 Screw BYC40P180FZK BYC40P180FZK BYC40P180FZK
3 Polyethylene Bag HEG0011 HEG0011 HEG0011
4 Screw SMZ50H300FCR SMZ50H300FCR SMZ50H300FCR
5 Polyethylene Bag HEG0022 HEG0022 HEG0022
6 Carton HHG0170 HHG0171 HHG0172
7 Contain Box HHL0170 HHL0171 HHL0172
8 Protector HHP0043 HHP0043 HHP0043
9 Protector HHP0063 HHP0064 HHP0065
* 10 Spec Sheet HRB0044 HRB0043 HRB0040
11 Owner’s Manual HRD0087 HRD0087 HRD0087
* 12 Warranty Card HRY1070 HRY1070 HRY1070

4
PRS-X720,X320,X220
2.2 EXTERIOR(PRS-X720/X1R/UC)

5
PRS-X720,X320,X220
-EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Screw(M3×12) CBA1323
2 •••••
* 3 Badge HAM0013
4 Screw(M3×5) HBA0006
5 Screw(M3×8) HBA0011
6 Insert HBN0003
7 Case HNB0087
8 Case HNB0089
9 Heat Sink HNR0110
10 Bracket HNS0070
11 Bracket HNS0071
12 End Cap HNS0072
13 Spacer HNV0016
14 Amp Unit HWH0091
15 Screw BBZ30P060FMC
16 •••••
17 Screw(M3×14) CBA1382
18 Terminal(CN905) CKF1059
19 Fuse(30A) HEK0030
20 Pin Jack(CN851) HKB0006
21 Fuse Holder HKE0012
22 Terminal(CN901) HKE0020
23 Terminal(CN551) HKE0021
24 Terminal(CN552) HKE0021
25 Clip HNC0054
26 Heat Sink HNR0113
27 Heat Sink HNR0114
28 Bar HNR0124
29 Screw PPZ30P100SAD
30 Light Pipe Unit HXA0201
31 Screw PPZ30P100FZK
32 Thermistor(TH901, 902) CCX1013
33 FET(Q561-566) 94-4980
34 FET(Q905, 906, 911-914) STP50NE08
35 Transistor(Q907) 2SD2395
36 Diode(D907) FML22S
37 FET(Q567-572) 94-4981
38 Transistor(Q908) 2SB1566
39 Diode(D910) FML22R
40 Variable Resistor(VR453) CCS1265
41 Volume(VR451) HCS0001
42 Variable Resistor(VR452) CCS1263
43 Variable Resistor(VR101) CCS1266
44 Screw(M3×14) HBA0017
45 Screw SMZ50H300FCR

6
PRS-X720,X320,X220
2.3 EXTERIOR(PRS-X320/X1R/UC)

7
PRS-X720,X320,X220
1 Screw(M3×12) CBA1323
2 •••••
* 3 Badge HAM0013
4 Screw(M3×5) HBA0006
5 Screw(M3×8) HBA0011
6 Insert HBN0003
7 Case HNB0086
8 Case HNB0089
9 Heat Sink HNR0111
10 Bracket HNS0070
11 Bracket HNS0071
12 End Cap HNS0072
13 Spacer HNV0016
14 Amp Unit HWH0095
15 Screw BBZ30P060FMC
16 •••••
17 Screw(M3×14) CBA1382
18 Terminal(CN902) CKF1059
19 Fuse(30A) HEK0030
20 Pin Jack(CN851) HKB0006
21 Fuse Holder HKE0012
22 Terminal(CN901) HKE0020
23 Terminal(CN651) HKE0021
24 Terminal(CN652) HKE0021
25 Clip HNC0054
26 Buss Bar HNC0064
27 Buss Bar HNC0065
28 Heat Sink HNR0115
29 Heat Sink HNR0116
30 Bar HNR0124
31 Screw PPZ30P100SAD
32 Light Pipe Unit HXA0201
33 Screw PPZ30P100FZK
34 Thermistor(TH901, 902) CCX1013
35 Transistor(Q908) 2SB1566
36 Transistor(Q907) 2SD2395
37 Diode(D907) FML22S
38 Diode(D910) FML22R
39 FET(Q905, 906, 911, 912) STP50NE08
40 FET(Q563, 564, 565, 566) 94-4980
41 FET(Q567, 568, 569, 570) 94-4981
42 Volume(VR451) HCS0001
43 Variable Resistor(VR453) CCS1265
44 Variable Resistor(VR452) CCS1263
45 Variable Resistor(VR101) CCS1266
46 Screw(M3×14) HBA0017
47 Screw SMZ50H300FCR
-EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.

8
PRS-X720,X320,X220
2.4 EXTERIOR(PRS-X220/X1R/UC)

9
PRS-X720,X320,X220
1 Screw(M3×12) CBA1323
2 •••••
* 3 Badge HAM0013
4 Screw(M3×5) HBA0006
5 Screw(M3×8) HBA0011
6 Insert HBN0003
7 Case HNB0088
8 Case HNB0090
9 Heat Sink HNR0112
10 Bracket HNS0070
11 Bracket HNS0071
12 End Cap HNS0072
13 Spacer HNV0016
14 Amp Unit HWH0099
15 Screw BBZ30P060FMC
16 Screw BMS30P080FMC
17 Screw(M3×14) CBA1382
18 Terminal(CN902) CKF1059
19 Fuse(30A) HEK0030
20 Pin Jack(CN851) HKB0006
21 Fuse Holder HKE0012
22 Terminal(CN901) HKE0020
23 Terminal(CN651) HKE0021
24 Terminal(CN652) HKE0021
25 Clip HNC0054
26 Heat Sink HNR0117
27 Heat Sink HNR0118
28 Bar HNR0124
29 Screw PPZ30P100SAD
30 Light Pipe Unit HXA0201
31 Screw PPZ30P100FZK
32 Thermistor(TH901, 902) CCX1013
33 FET(Q905, 906, 911, 912) IRFIZ44N
34 Diode(D907) FML22S
35 Diode(D910) FML22R
36 Transistor(Q907) 2SD2395
37 Transistor(Q908) 2SB1566
38 FET(Q565, 566) 94-4980
39 FET(Q567, 568) 94-4981
40 Volume(VR451) HCS0001
41 Variable Resistor(VR101) CCS1266
42 Variable Resistor(VR453) CCS1265
43 Screw(M3×14) HBA0017
44 Screw SMZ50H300FCR
-EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.

PRS-X720,X320,X220
1234
1234
D
C
B
A
1
2
3
1
2
3
3. SCHEMATIC DIAGRAM
3.1 AMP UNIT(GUIDE PAGE)(PRS-X720/X1R/UC)
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS
LIST”.
A
10 A
A-a

PRS-X720,X320,X220
5678
5678
D
C
B
A
94-4980
94-4980
94-4980
94-4981
94-4981
94-4981
94-4980
94-4980
94-4980
94-4981
94-4981
94-4981
A-b
11
A
A-a A-b
A-aA-a A-bA-b
A-bA-b
A-aA-a
Large size
SCH diagram
Guide page
Detailed page

12
PRS-X720,X320,X220
1234
1234
D
C
B
A
A-a
A-a A-b
A

PRS-X720,X320,X220
5678
5678
D
C
B
A
13
1
1 2
3
2
3
A-a
A-a A-b

14
PRS-X720,X320,X220
1234
1234
D
C
B
A
94-4980
94-4980
94-4980 94-4981
94-4981
94-4981
94-4980
94-4980
94-4980
A-a A-b
A-b

PRS-X720,X320,X220
5678
5678
D
C
B
A
15
94-4981
94-4981
94-4981
A-b
A-a A-b

PRS-X720,X320,X220
1234
1234
D
C
B
A
1
1
2
3
2
3
3.2 AMP UNIT(GUIDE PAGE)(PRS-X320/X1R/UC)
A-a
A
16 A

PRS-X720,X320,X220
5678
5678
D
C
B
A
94-4980
94-4980
94-4980
94-4980
94-4981 94-4981
94-4981 94-4981
A-b
17
A

18
PRS-X720,X320,X220
1234
1234
D
C
B
A
A-a
A-a A-b
A

19
PRS-X720,X320,X220
5678
5678
D
C
B
A
1 2
3
1 2
3
A-a
A-a A-b

20
PRS-X720,X320,X220
1234
1234
D
C
B
A
94-4980
94-4980
94-4980
94-4980
94-4981 94-4981
A-a A-b
A-b