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Service
Manual ORDER NO.
CRT2187

BRIDGEABLE POWER AMPLIFIER



GM-X822 X1R/UC

GM-X722 X1R/UC,ES,EW




CONTENTS
1. SAFETY INFORMATION ............................................2 6. ADJUSTMENT..........................................................19
2. EXPLODED VIEWS AND PARTS LIST .......................3 7. GENERAL INFORMATION .......................................20
3. SCHEMATIC DIAGRAM .............................................8 7.1 IC .........................................................................20
4. PCB CONNECTION DIAGRAM ................................12 7.2 DISASSEMBLY ...................................................21
5. ELECTRICAL PARTS LIST ........................................15 7.3 BLOCK DIAGRAM ..............................................22
8. OPERATIONS AND SPECIFICATIONS.....................23


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. 501 Orchard Road, #10-00, Wheelock Place, Singapore 238880

C PIONEER ELECTRONIC CORPORATION 1998 K-ZEB. FEB. 1998 Printed in Japan
GM-X822,X722




1. SAFETY INFORMATION
UC model
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

Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxi-
cant which may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin
contact with the solder. Also, when soldering do not inhale any smoke or fumes produced.




2
GM-X822,X722




2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING

10

11
9 1
2
4
3




7 8

5


8



6 Fig. 1




3
GM-X822,X722



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.
- PACKING SECTION PARTS LIST

Part No.
GM-X822 GM-X722
Mark No. Description X1R/UC X1R/UC X1R/ES X1R/EW
* 1 Screw Assy HEA0044 HEA0044 HEA0044 HEA0044
2 Screw(x4) BYC40P180FZK BYC40P180FZK BYC40P180FZK BYC40P180FZK
3 Polyethylene Bag HEG0011 HEG0011 HEG0011 HEG0011
4 Wrench HLP0001 HLP0001 HLP0001 HLP0001
5 Polyethylene Bag HEG0013 HEG0013 HEG0013 HEG0013

6 Carton HHG0164 HHG0165 HHG0166 HHG0167
7 Contain Box HHL0164 HHL0165 HHL0166 HHL0167
8 Protector(x2) HHP0025 HHP0025 HHP0025 HHP0025
9-1 Owner's Manual HRD0060 HRD0061 HRD0062 HRD0063
9-2 Owner's Manual Not used Not used HRD0069 Not used

10 Warranty Card *HRY1070 Not used Not used HRY1087
11 Card Not used ARY1048 Not used Not used



- Owner's Manual
Model Part No. Language
GM-X822/X1R/UC HRD0060 English, French
GM-X722/X1R/UC HRD0061 English, French
GM-X722/X1R/ES HRD0062 English, Spanish
HRD0069 Arabic, Portuguese(B)
GM-X722/X1R/EW HRD0063 English, French, German, Dutch, Spanish, Italian




4
GM-X822,X722




2.2 EXTERIOR




Fig. 2



5
GM-X822,X722



(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No. Mark No. Description Part No.
1 Screw BMZ30P250FZK 36 Clamper HNV0015
2 Screw(M3x12) CBA1323 37 Spacer HNV3975
3 Screw(M3x14) CBA1382 38 Screw BMZ30P250FZK
4 Sheet CNM5854 39 Fan Motor CXM1102
5 Screw HBA0006 40 Fuse(20A) HEK0020

6 Screw HBA0011 41 Pin Jack(CN801) HKB0002
7 Screw HBA0012 42 Pin Jack(CN851) HKB0002
8 Washer HBF0005 43 Terminal(CN101) HKE0010
9 Case HNB0037 44 Fuse Holder(CN902) HKE0012
10 Heat Sink HNR0078 45 Terminal(CN901) HKE0014

11 Window HNS0053 46 Holder HNC0027
12 Lighting Conductor HNV0013 47 Holder HNC0028
13 Amp Unit See Contrast table(2) 48 Spacer HNV0010
14 Screw BMS30P060FZK 49 Screw PPZ30P060FZK
15 Screw BMS30P080FMC 50 Film See Contrast table(2)

16 Clamper CEF1009 51 Film See Contrast table(2)
17 Terminal(CN904) CKF1059 52 Plate Unit See Contrast table(2)
18 Plug(CN551) CKS1037 53 Light Pipe Unit HXA0201
19 Plug(CN501) CKS1039 54 Plate Unit See Contrast table(2)
20 Connector(CN503) CKS3799 55 Sheet Unit See Contrast table(2)

21 Connector(CN552) CKS3800 56 Panel Unit See Contrast table(2)
22 Cord(CN153) HDE5500 57 Plate HNS0066
23 Cord(CN253) HDE5500 58 Panel Unit See Contrast table(2)
24 Cord(CN502) HDE5501 59 Screw SMZ30H080FCR
25 Cord(CN553) HDE5502 60 LED(D902,903) See Contrast table(2))

26 Holder HNC0029 61 Transistor(Q113,114,213,214) 2SC5099
27 Buss Bar HNC0043 62 Transistor(Q115,116,215,216) 2SA1907
28 Buss Bar HNC0045 63 Thermistor(TH651,652) CCX1013
29 Buss Bar HNC0051 64 FET(Q963-966) IRFIZ44N
30 Buss Bar HNC0053 65 Transistor(Q107,207) 2SC1568

31 Clip HNC0054 66 Diode(D961) FML22S
32 Separator HNM0047 67 Diode(D962) FML22R
33 Spacer See Contrast table(2) 68 Thermistor(TH901) CCX1027
34 Heat Sink HNR0081 69 Screw BSZ30P050FZK
35 Heat Sink HNR0082




6
GM-X822,X722



(2) CONTRAST TABLE
GM-X822/X1R/UC, GM-X722/X1R/UC, GM-X722/X1R/ES and GM-X722/X1R/EW are constructed the same except for the
following:

Part No.
GM-X822 GM-X722
Mark No. Symbol and Description X1R/UC X1R/UC X1R/ES X1R/EW
13 Amp Unit HWH0075 HWH0076 HWH0074 HWH0073
33 Spacer HNM0053(x2) HNM0053(x2) HNM0053(x1) HNM0053(x2)
50 Film CNM5856 Not used Not used Not used
51 Film CNM5855 Not used Not used Not used
52 Plate Unit HXA0115 HXA0111 HXA0111 HXA0111

54 Plate Unit HXA0206 HXA0203 HXA0203 HXA0203
55 Sheet Unit HXA0266 HXA0126 HXA0118 HXA0118
56 Panel Unit HXA0270 HXA0271 HXA0271 HXA0271
58 Panel Unit HXA0273 HXA0272 HXA0272 HXA0272
60 LED(D902,903) NSPWF50S(AQ) NSPWF50S(VQ) NSPWF50S(VQ) NSPWF50S(VQ)




7
1 2 3 4
GM-X822,X722



3. SCHEMATIC DIAGRAM
3.1 AMP UNIT
A Note: When ordering service parts, be sure to refer to "EXPLODED VIEWS AND PARTS LIST" or "ELECTRICAL PARTS
LIST".
A AMP PCB
-10dBs
-7.6dBs



-10.2dBs B AUDIO PCB C
BASS
PCB




B




15.5V

-15.5V



AMP UNIT
Consists of
AMP PCB
AUDIO PCB
BASS PCB


-35V

-35-30V


C
30V
-30V




D




8 A 1 2 3 4
5 6 7 8
GM-X822,X722




A




-14.3dBs




B 21.3dBs




B




C




0.1V

3.2V
3.5V 0.3V
3.8V 0.2V

1.9V 5.0V 14.4V

5.0V 0.2V 0V 14.3V

5.0V 2.6V 0.2V 10.7V
14.4V
2.4V 0V

2.4V




6.3V




D




Fig. 3

5 6 7
A
8
9
1 2 3 4
GM-X822,X722




3.2 AUDIO PCB AND BASS PCB




CN551
A




A
BASS PCB
C




B




C
AUDIO PCB
B




D
CN501
A




Fig. 4




10 B C
1 2 3 4
GM-X822,X722




11
1 2 3 4
GM-X822,X722




4. PCB CONNECTION DIAGRAM
4.1 AMP UNIT
A AMP PCB
A


FAN MO

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
Connector Capacitor


B
SIDE A



P.C.Board Chip Part SIDE B
INPUT



B
CN502



PREOUT




C




D




12 A 1 2 3 4
5 6 7 8
GM-X822,X722




A


AN MOTOR




B




C




C CN553 D




Fig. 5




5 6 7
A
8
13
1 2 3 4
GM-X822,X722




A B AUDIO PCB



A
CN501 C CN552




B




Fig. 6




C BASS PCB


C A
CN551
B
CN503




D



Fig. 7



14 B C
1 2 3 4
GM-X822,X722




5. ELECTRICAL PARTS LIST
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.....

=====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No.
--- ------ --------------------------------------------- ------------------------- --- ------ --------------------------------------------- -------------------------
Q 612 Transistor 2SC2458
AMP UNIT
Q 613 Transistor DTA124ES
Consists of
Q 651 Transistor 2SA1048
AMP PCB
Q 652 Transistor 2SC2458
AUDIO PCB
Q 653 Transistor 2SC2458
BASS PCB
Q 654 Transistor 2SC2458
Unit Number : HWH0075 (GM-X822/X1R/UC)
Q 655 Transistor 2SA1048
: HWH0076 (GM-X722/X1R/UC)
A B C : HWH0074 (GM-X722/X1R/ES)
: HWH0073 (GM-X722/X1R/EW)
Q
Q
Q
656
657
658
Transistor
Transistor
Transistor
2SC2458
2SA1048
2SB1243
Unit Name : Amp Unit
Q 951 Transistor 2SA1048
Q 952 Transistor 2SC2458
MISCELLANEOUS
Q 953 Transistor 2SC2458
Q 954 Transistor 2SA1048
IC 501 IC NJM2068S
Q 955 Transistor 2SA1048
IC 502 IC NJM2068S
IC 503 IC NJM2068S
Q 956 Transistor DTA124ES
IC 504 IC NJM2068S
Q 957 Transistor 2SC2458
IC 551 IC NJM2068S
Q 958 Transistor 2SD1864
Q 959 Transistor 2SD1919
IC 552 IC NJM2068S
Q 960 Transistor 2SD1919
IC 651 IC PA2027A
IC 801 IC NJM2068S
Q 961 Transistor 2SB1277
IC 851 IC NJM2068S
Q 962 Transistor 2SB1277
IC 852 IC NJM2068S
Q 963 FET IRFIZ44N
Q 964 FET IRFIZ44N
IC 951 IC UPC494C
Q 965 FET IRFIZ44N
Q 101 Transistor 2SK389
Q 102 Transistor 2SA992
Q 966 FET IRFIZ44N
Q 103 Transistor 2SA992
Q 969 Transistor 2SB1566
Q 104 Transistor 2SC1845
Q 970 Transistor 2SD2395
D 101 Diode HZS6L(B1)
Q 105 Transistor 2SA992
D 102 Diode 1SS133
Q 106 Transistor 2SC1845
Q 107 Transistor 2SC1568
D 103 Diode 1SS133
Q 111 Transistor 2SC3421
D 201 Diode HZS6L(B1)
Q 112 Transistor 2SA1358
D 202 Diode 1SS133
D 203 Diode 1SS133
Q 113 Transistor 2SC5099
D 601 Diode 1SS133
Q 114 Transistor 2SC5099
Q 115 Transistor 2SA1907
D 602 Diode 1SS133
Q 116 Transistor 2SA1907
D 651 Diode 1SS133
Q 201 Transistor 2SK389
D 652 Diode HZS7L(B2)
D 654 Diode 1SS133
Q 202 Transistor 2SA992
D 658 Diode 1SS133
Q 203 Transistor 2SA992
Q 204 Transistor 2SC1845
D 659 Diode 1SS133
Q 205 Transistor 2SA992
D 901 Diode RM4Z-LFK5
Q 206 Transistor 2SC1845
D 902 LED See Conttast table(2)
D 903 LED See Conttast table(2)
Q 207 Transistor 2SC1568
D 954 Diode HZS12L(A3)
Q 211 Transistor 2SC3421
Q 212 Transistor 2SA1358
D 955 Diode 1SS133
Q 213 Transistor 2SC5099
D 956 Diode 1SS133
Q 214 Transistor 2SC5099
D 957 Diode HZS16L(1)
D 958 Diode HZS16L(1)
Q 215 Transistor 2SA1907
D 959 Diode ERA92-02VH
Q 216 Transistor 2SA1907
Q 601 Transistor 2SD1768S
D 960 Diode ERA92-02VH
Q 602 Transistor 2SD1768S
D 961 Diode FML22S
Q 611 Transistor 2SC2458
D 962 Diode FML22R
D 963 Diode 1SS133
L 851 Ferri-Inductor CTF1007



15
GM-X822,X722



=====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No.
--- ------ --------------------------------------------- ------------------------- --- ------ --------------------------------------------- -------------------------
L 852 Ferri-Inductor CTF1007 R 228 0.22 CCN1071
L 901 Choke Coil 50mH CTH1144 R 229 0.22 CCN1071
L 951 Choke Coil 200mH CTH1211 R 234 RD1/2PM100J
L 952 Choke Coil 200mH CTH1211 R 501 RD1/4PU103J
T 951 Transformer CTT1081 R 502 RD1/4PU103J

TH 651 Thermistor CCX1013 R 503 RD1/4PU103J
TH 652 Thermistor CCX1013 R 504 RD1/4PU103J
TH 653 Thermistor CCX1035 R 505 RD1/4PU103J
TH 901 Thermistor CCX1027 R 506 RD1/4PU103J
S 501 Switch CSH1029 R 507 RD1/4PU472J

VR 101 Semi-fixed 1.5k(B) CCP1314 R 508 RD1/4PU472J
VR 201 Semi-fixed 1.5k(B) CCP1314 R 509 RD1/4PU103J
VR 501 Variable Resistor 20k(E) CCS1266 R 510 RD1/4PU103J
VR 503 Variable Resistor 10k(A) CCS1265 R 511 RD1/4PU103J
VR 551 Variable Resistor 10k(C) CCS1268 R 512 RD1/4PU103J

VR 552 Variable Resistor 50k(C) See Conttast table(2) R 513 RD1/4PU123J
VR 951 Semi-fixed 100k(B) CCP1325 R 514 RD1/4PU123J
EF 951 Capacitor CCG-081 R 515 RD1/4PU562J
EF 952 Capacitor CCG-081 R 516 RD1/4PU562J
R 517 RD1/4PU123J
RESISTORS
R 518 RD1/4PU123J
R 101 RD1/4PU223J R 519 RD1/4PU222J
R 102 RD1/4PU101J R 520 RD1/4PU222J
R 103 RD1/4PU471J R 521 RD1/4PU121J
R 106 RD1/4PU472J R 522 RD1/4PU121J
R 107 RD1/4PU222J
R 551 RD1/4PU331J
R 108 RD1/4PU101J R 552 RD1/4PU331J
R 111 RD1/4PU561J R 553 See Conttast table(2)
R 112 RD1/4PU333J R 554 See Conttast table(2)
R 113 RD1/4PU273J R 555 RD1/4PU182J
R 114 RD1/4PU432J
R 556 RD1/4PU182J
R 115 RD1/4PU390J R 557 RD1/4PU221J
R 116 RD1/4PU512J R 558 RD1/4PU221J
R 117 RD1/4PU222J R 565 See Conttast table(2)
R 118 RD1/4PU221J R 566 See Conttast table(2)
R 121 RD1/4PU470J
R 601 RD1/4PU124J
R 122 RD1/4PU470J R 602 RD1/4PU124J
R 123 RD1/4PU221J R 603 RD1/4PU124J
R 124 RD1/2PM100J R 604 RD1/4PU124J
R 125 RD1/2PM100J R 605 RD1/4PU473J
R 126 RD1/2PM100J
R 606 RD1/4PU473J
R 127 RD1/2PM100J R 607 RD1/4PU473J
R 128 0.22 CCN1071 R 608 RD1/4PU473J
R 129 0.22 CCN1071 R 611 RD1/4PU103J
R 134 RD1/2PM100J R 612 RD1/4PU103J
R 201 RD1/4PU223J
R 651 RD1/4PU104J
R 202 RD1/4PU101J R 652 RD1/4PU822J
R 203 RD1/4PU471J R 653 RD1/4PU472J
R 206 RD1/4PU472J R 654 RD1/4PU222J
R 207 RD1/4PU222J R 655 RD1/4PU472J
R 208 RD1/4PU101J
R 656 RD1/4PU472J
R 211 RD1/4PU561J R 657 RD1/4PU221J
R 212 RD1/4PU333J R 658 RD1/4PU102J
R 213 RD1/4PU273J R 659 RD1/4PU473J
R 214 RD1/4PU432J R 660 RD1/4PU103J
R 215 RD1/4PU390J
R 661 RD1/4PU103J
R 216 RD1/4PU512J R 662 RD1/4PU222J
R 217 RD1/4PU222J R 663 RD1/4PU472J
R 218 RD1/4PU221J R 664 RD1/4PU272J
R 221 RD1/4PU470J R 665 RD1/4PU272J
R 222 RD1/4PU470J
R 666 RD1/4PU103J
R 223 RD1/4PU221J R 667 RD1/4PU472J
R 224 RD1/2PM100J R 668 RD1/4PU473J
R 225 RD1/2PM100J R 669 RD1/4PU221J
R 226 RD1/2PM100J R 670 RD1/4PU152J
R 227 RD1/2PM100J




16
GM-X822,X722



=====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No.
--- ------ --------------------------------------------- ------------------------- --- ------ --------------------------------------------- -------------------------
R 671 RD1/4PU472J R 998 RD1/4PU681J
R 672 RD1/4PU101J
R 673 RD1/4PU272J CAPACITORS
R 674 RD1/4PU272J
R 675 RD1/4PU272J C 101 CEAS100M16
C 102 CQPA221G2A
R 676 RD1/4PU223J C 103 CQPA102G2A
R 677 RD1/4PU223J C 104 CFTLA104J50
R 678 RD1/4PU223J C 105 CEAS101M16
R 801 RD1/4PU223J
R 802 RD1/4PU223J C 106 CMA150J2H
C 107 CFTLA104J50
R 803 RD1/4PU821J C 108 CMA330J2H
R 804 RD1/4PU821J C 109 CFTLA104J50
R 807 RD1/4PU223J C 111 CMA101J2H
R 808 RD1/4PU223J
R 810 RD1/4PU223J C 112 CMA101J2H
C 113 CFTLA333J50
R 851 RD1/4PU471J C 114 CQPA102G2A
R 852 RD1/4PU471J C 115 CQPA471G2A
R 853 RD1/4PU223J C 201 CEAS100M16
R 854 RD1/4PU223J
R 855 RD1/4PU222J C 202 CQPA221G2A
C 203 CQPA102G2A
R 856 RD1/4PU222J C 204 CFTLA104J50
R 857 RD1/4PU392J C 205 CEAS101M16
R 858 RD1/4PU392J C 206 CMA150J2H
R 859 RN1/4PC1002D
R 860 RN1/4PC1002D C 207 CFTLA104J50
C 208 CMA330J2H
R 861 RN1/4PC1002D C 209 CFTLA104J50
R 862 RN1/4PC1002D C 211 CMA101J2H
R 863 RN1/4PC7501D C 212 CMA101J2H
R 864 RN1/4PC7501D
R 865 RN1/4PC7501D C 213 CFTLA333J50
C 214 CQPA102G2A
R 866 RN1/4PC7501D C 215 CQPA471G2A
R 902 RD1/4PU391J C 501 CCPUSL470J50
R 951 RD1/4PU103J C 502 CCPUSL470J50
R 952 RD1/4PU223J
R 953 RD1/4PU392J C 503 CFTLA104J50
C 504 CFTLA104J50
R 954 RD1/4PU183J C 505 CFTLA104J50
R 956 RD1/4PU153J C 506 CFTLA104J50
R 957 RD1/4PU102J C 551 CFTLA333J50
R 958 RD1/4PU512J
R 959 RD1/4PU472J C 552 CFTLA333J50
C 553 CEAS4R7M50
R 960 RD1/4PU101J C 554 CEAS4R7M50
R 963 RD1/4PU472J C 555 CFTLA334J50
R 964 RD1/4PU153J C 556 CFTLA334J50
R 965 RD1/4PU182J
R 966 RD1/4PU223J C 557 CEAS220M50
C 651 220