Pioneer GM-X1024/X1R/UC User manual

GM-X1024/X1R/UC
BRIDGEABL FOUR-CHANNEL POWER AMPLIFIER
GM-X1024 X1R/UC
Se r v i c e
M a nu a l
GM-X924 X1R/UC,EW,ES
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, Lane Wheelock Place, Singapore 23880
C PIONEER ELECTRONIC CORPORATION 1998
ORDER NO.
CRT2191
CONTENTS
1. SAFETY INFORMATION ............................................2
2. EXPLODED VIEWS AND PARTS LIST.......................2
3. SCHEMATIC DIAGRAM .............................................8
4. PCB CONNECTION DIAGRAM ................................14
5. ELECTRICAL PARTS LIST ........................................19
6. ADJUSTMENT..........................................................25
7. GENERAL INFORMATION .......................................26
7.1 IC ........................................................................26
7.2 DISASSEMBLY ...................................................27
7.3 BLOCK DIAGRAM ..............................................28
8. OPERATIONS AND SPECIFICATIONS.....................29
K-FED. MAR. 1998 Printed in Japan

2
GM-X1024,GM-X924
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
35
4
2
10
89
6
7
9
Fig. 1
1. 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.
WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive
toxicant which may cause birth defects or other reproductive harm (California Health and 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.

3
GM-X1024,GM-X924
(1) PACKING SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
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.
1 •••••
* 2 Screw Assy HEA0044
3 Screw BYC40P180FZK
4 Polyethylene Bag HEG0011
5 Wrench HLP0001
6 Polyethylene Bag HEG0013
7 Carton See Contrast table (2)
8 Contain Box See Contrast table (2)
9 Protector HHP0025
10-1 Owner's Manual See Contrast table (2)
* 10-2 Card See Contrast table (2)
* 10-3 Warranty Card See Contrast table (2)
10-4 Owner's Manual See Contrast table (2)
(2) CONTRAST TABLE
GM-X1024/X1R/UC, GM-X924/X1R/UC, GM-X924/X1R/EW and GM-X924/X1R/ES are constructed the same except for
the following:
Part No.
GM-X1024 GM-X924
Mark No. Symbol and Description X1R/UC X1R/UC X1R/EW X1R/ES
7 Carton HHG0154 HHG0155 HHG0158 HHG0157
8 Contain Box HHL0154 HHL0155 HHL0158 HHL0157
10-1 Owner’s Manual HRD0056 HRD0057 HRD0059 HRD0058
* 10-2 Card Not used ARY1048 Not used Not used
* 10-3 Warranty Card HRY1070 Not used HRY1087 Not used
10-4 Owner’s Manual Not used Not used Not used HRD0068
-Owner's Manual
Model Part No. Language
GM-X1024/X1R/UC HRD0056 English, French
GM-X924/X1R/UC HRD0057 English, French
GM-X924/X1R/EW HRD0059 English, French, German, Dutch, Spanish, Italian
GM-X924/X1R/ES HRD0058 English, Spanish
HRD0068 Arabic, Poltuguese (B)

4
GM-X1024,GM-X924
2.2 EXTERIOR
Fig. 2

5
GM-X1024,GM-X924
1 Screw(M3×25) HBA0013
2 Screw(M3×12) CBA1323
3 Screw(M3×14) CBA1382
4 Sheet CNM5852
5 Screw(M3×5) HBA0006
6 Screw(M3×8) HBA0011
7 Screw(M2.6×6) HBA0012
8 Washer HBF0005
9 Case HNB0036
10 Separator HNM0046
11 Heat Sink See Contrast table (2)
12 Window HNS0053
13 Lighting Conductor HNV0012
14 Amp Unit See Contrast table (2)
15 Screw BMS30P060FZK
16 Screw BMS30P080FMC
17 Terminal(CN905) CKF1059
18 Plug(CN503) CKS1039
19 Plug(CN553) CKS1039
20 Connector(CN853) CKS3813
21 Connector(CN852) CKS3814
22 Holder CNV4017
23 Cord(CN104) HDE5500
24 Cord(CN304) HDE5500
25 Bass Bar HNC0043
26 Bass Bar HNC0044
27 Bass Bar HNC0046
28 Bass Bar HNC0047
29 Bass Bar HNC0049
30 Bass Bar HNC0050
31 Bass Bar HNC0052
32 Bass Bar HNC0055
33 Spacer HNM0053
34 Heat Sink HNR0079
35 Heat Sink HNR0080
36 Clamper HNV0003
37 Clamper HNV0015
38 Spacer HNV3975
39 Network Unit See Contrast table (2)
40 Plug(CN501) CKS1039
41 Plug(CN551) CKS1039
42 Plug(CN102) CKS1621
43 Plug(CN302) CKS1621
44 Connector(CN857) CKS3815
45 Connector(CN856) CKS3816
46 Cord(CN502) HDE5501
47 Cord(CN552) HDE5501
48 Cord(CN854) HDE5501
49 Cord(CN855) HDE5501
50 Holder HNC0029
51 Clip HNC0054
52 Screw(M3×25) HBA0013
53 Fan Motor CXM1102
54 Fuse HEK0030
55 Pin Jack(CN801) HKB0002
56 Pin Jack(CN851) HKB0004
57 Terminal(CN101) HKE0010
58 Terminal(CN301) HKE0010
59 Fuse Holder(CN902) HKE0012
60 Terminal(CN901) HKE0014
61 Holder HNC0027
62 Holder HNC0028
63 Screw PPZ30P060FZK
64 Plate Unit See Contrast table (2)
65 Sheet Unit See Contrast table (2)
66 Light Pipe Unit HXA0201
67 Plate Unit See Contrast table (2)
68 Panel Unit See Contrast table (2)
69 Panel See Contrast table (2)
70 Plate See Contrast table (2)
71 Panel Unit See Contrast table (2)
72 Front Panel See Contrast table (2)
73 Plate See Contrast table (2)
74 Screw SMZ30H080FCR
75 Screw BSZ30P050FZK
76 Film See Contrast table (2)
77 Film See Contrast table (2)
78 LED(D903,904) NSPWF50S(AQ)
79 Diode(D961) FML22R
80 Diode(D962) FML22S
81 Transistor(Q112,212,312,412) 2SC1568
82 FET(Q963–968) IRFIZ44N
83 Transistor(Q115,215,315,415) 2SC5101
84 Transistor(Q116,216,316,416) 2SA1919
85 Thermistor(TH901) CCX1027
86 Thermistor(TH902,903) CCX1035
87-93 •••••
94 Sheet CNM5950
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.

6
GM-X1024,GM-X924
(2) CONTRAST TABLE
GM-X1024/X1R/UC, GM-X924/X1R/UC, GM-X924/X1R/EW and GM-X924/X1R/ES are constructed the same except for
the following:
Part No.
GM-X1024 GM-X924
Mark No. Symbol and Description X1R/UC X1R/UC X1R/EW X1R/ES
11 Heat Sink HNR0073 HNR0093 HNR0093 HNR0093
14 Amp Unit HWH0066 HWH0067 HWH0064 HWH0065
39 Network Unit HWG0008 HWG0009 HWG0006 HWG0007
64 Plate Unit HXA0262 HXA0112 HXA0112 HXA0112
65 Sheet Unit HXA0264 HXA0116 HXA0116 HXA0116
67 Plate Unit HXA0205 HXA0202 HXA0202 HXA0202
68 Panel Unit HXA0249 HXA0244 HXA0244 HXA0244
69 Panel * HNB0064 HNB0038 HNB0038 HNB0038
70 Plate * HNS0064 HNS0039 HNS0039 HNS0039
71 Panel Unit HXA0251 HXA0247 HXA0247 HXA0247
72 Panel * HNB0066 HNB0043 HNB0043 HNB0043
73 Plate * HNS0065 HNS0046 HNS0046 HNS0046
76 Film CNM5856 CNM5949 CNM5949 CNM5949
77 Film CNM5853 CNM5948 CNM5948 CNM5948

7
GM-X1024,GM-X924

8
GM-X1024,GM-X924
A
1234
B
C
D
34
A-a A-b
A-a A-b
A-b
A-a
Large size
SCH diagram
Guide page
Detailed page
3. SCHEMATIC DIAGRAM
3.1 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL
PARTS LIST”.
A
B
C
D
A-a
12
OFF
OFF
HPF LPF
VR501:FREQUENCY
S501:LPF/HPF
VR501:FREQUENCY
S501:LPF/HPF
VR551:FREQUENCY
S551:LPF/HPF
OFF
OFF
VR551:FREQUENCY
S551:LPF/HPF
HPF LPF
SWITCHING
CONTROL
DC-AC INVERTER
+15V REGULATOR RECTIFICATION
-15V REGULATOR
ISOLATOR
BFC
H
L
2CH/4CH
2CH
4CH
GM-X924/X1R/EW,
GM-X924/X1R/ES
B
C
D
-7.7dBm -10.2dBm
-10dBm
-14.4dB
-15.4V
+15.4V
-42.1V
+42.1V
-29.0V
+29.0V
3.9V
3.9V
14.4V
5V
5V
2.4V
2.4V
14.4V
0V
3.8V
1.8V
2.2V
0V
6.5V
D903,D904:NSPWF50S(AQ)

9
GM-X1024,GM-X924
5678
A
B
C
D
56
A
E
F
A-b
78
Fig. 3
POWER STAGE
OVER CURRENT DETECTOR
THERMO DETECTOR / PROTECTOR
OVER VOLTAGE DETECTOR / PROTECTOR
MUTE CONTROL
REGULATOR CONTROL
FE
A
20.4dBm
0V
0.2V
14.4V
14.2V
10.7V
14.4V
0.1V
3.2V
0.3V
5V0V
0.2V
0V
14.4V

10
GM-X1024,GM-X924
A
1234
B
C
D
234
A-a
A-a A-b
1
OFF
OFF
HPF LPF
VR501:FREQUENCY
S501:LPF/HPF
VR501:FREQUENCY
S501:LPF/HPF
VR551:FREQUENCY
S551:LPF/HPF
OFF OFF
VR551:FREQUENCY
S551:LPF/HPF
HPF LPF
ISOLATOR
2CH/4CH
2CH
4CH
-7.7dBm -10.2dBm
-10dBm
-14.4dBm
C
D
B

OFF
S551:LPF/HPF
SWITCHING CONTROL
DC-AC INVERTER
+15V REGULATOR RECTIFICATION
-15V REGULATOR
BFC
H
L
GM-X924/X1R/EW, GM-X924/X1R/ES
-15.4V
+15.4V
-42.1V +42.1V -29.0V +29.0V
3.9V
3.9V
14.4V
5V 5V
2.4V
2.4V
14.4V
0V
3.8V 1.8V
2.2V
0V
6.5V
D903,D904:NSPWF50S(AQ)
11
GM-X1024,GM-X924
5678
A
B
C
D
567
A-a A-b
A-a
Fig. 4
B
D
8

12
GM-X1024,GM-X924
A
1234
B
C
D
234
A-b
A-a A-b
1
POWER STAGE
OVER CURRENT DETECTOR
20.4dBm
-14.4dBm
E
F

THERMO DETECTOR / PROTECTOR
OVER VOLTAGE DETECTOR / PROTECTOR
MUTE CONTROL
REGULATOR CONTROL
0V
0.2V
14.4V
14.2V
10.7V
14.4V
0.1V
3.2V
0.3V
5V0V
0.2V
0V
14.4V
(AQ)
13
GM-X1024,GM-X924
5678
A
B
C
D
567
A-a A-b
A-b
Fig. 5
F
8

2CH/4CH
INPUT
OUTPUT
A
B
A
AMP UNIT
B
CN856
E
CN102
D
CN552
C
CN502
F
CN302
B
CN857
14
GM-X1024,GM-X924
A
1234
B
C
D
234
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 diagram.
4. PCB CONNECTION DIAGRAM
4.1 AMP UNIT
A
1

BR+BR–BL+ BL–
SPEAKER OUTPUT
AR+AR–AL+ AL–
SPEAKER OUTPUT FU902
BACKUPGND
SYSTEM CONTROL FU901
BFC
A
B
15
GM-X1024,GM-X924
5678
A
B
C
D
567
Capacitor
Connector
P.C.Board Chip Part
SIDE A
SIDE B
2. Viewpoint of PCB diagrams
A
8
Fig. 6
SIDE A

16
GM-X1024,GM-X924
A
1234
B
C
D
1234
4.2 ISO PCB
B
D
CN551
A
CN852
B
ISO PCB
C
CN501
A
CN853
Fig. 7
SIDE A

17
GM-X1024,GM-X924
1234
A
B
C
D
1234
C
4.3 A LPF/HPF PCB
1 2 3 4 5
6 7 8 9
10
S501
LPF/HPF
S501
FREQUENCY GAIN
1 2 3 4 5
6 7 8 9
10
S551
LPF/HPF
FREQUENCY GAIN
S551
D
4.4 B LPF/HPF PCB
B
CN854
A
CN503
C
A LPF/HPF PCB
D
B LPF/HPF PCB
B
CN855
A
CN553
SIDE A
SIDE A
Fig. 8
Fig. 9

18
GM-X1024,GM-X924
A
1234
B
C
D
1234
4.5 A P.A. PCB
E
F
4.6 B P.A. PCB
E
A P.A. PCB
F
B P.A. PCB
A
CN303
A
CN103
Fig. 10
Fig. 11
SIDE A
SIDE A

19
GM-X1024,GM-X924
Network Unit
Consists of
ISO PCB
A LPF/HPF PCB
B LPF/HPF PCB
A P.A.PCB
B P.A.PCB
Unit Number : HWG0008
(GM-X1024/X1R/UC)
Unit Number : HWG0009
(GM-X924/X1R/UC)
Unit Number : HWG0006
(GM-X924/X1R/EW)
Unit Number : HWG0007
(GM-X924/X1R/ES)
Unit Name : Network Unit
MISCELLANEOUS
IC 501 IC NJM2068S
IC 502 IC NJM2068S
IC 503 IC NJM2068S
IC 504 IC NJM2068S
IC 551 IC NJM2068S
IC 552 IC NJM2068S
IC 553 IC NJM2068S
IC 554 IC NJM2068S
IC 851 IC NJM2068S
IC 861 IC NJM2068S
IC 871 IC NJM2068S
IC 881 IC NJM2068S
Q 103 Transistor 2SK389
Q 104 Transistor 2SA992
Q 105 Transistor 2SC1845
Q 106 Transistor 2SA992
Q 107 Transistor 2SC1845
Q 108 Transistor 2SC1845
Q 203 Transistor 2SK389
Q 204 Transistor 2SA992
Q 205 Transistor 2SC1845
Q 206 Transistor 2SA992
Q 207 Transistor 2SC1845
Q 208 Transistor 2SC1845
Q 303 Transistor 2SK389
Q 304 Transistor 2SA992
Q 305 Transistor 2SC1845
Q 306 Transistor 2SA992
Q 307 Transistor 2SC1845
Q 308 Transistor 2SC1845
Q 403 Transistor 2SK389
Q 404 Transistor 2SA992
Q 405 Transistor 2SC1845
Q 406 Transistor 2SA992
Q 407 Transistor 2SC1845
Q 408 Transistor 2SC1845
Q 711 Transistor 2SC2458
Q 721 Transistor 2SC2458
Q 731 Transistor 2SC2458
Q 741 Transistor 2SC2458
D 101 Diode HZS6L(B1)
D 106 Diode HZS6L(B1)
D 201 Diode HZS6L(B1)
D 206 Diode HZS6L(B1)
D 301 Diode HZS6L(B1)
D 306 Diode HZS6L(B1)
D 401 Diode HZS6L(B1)
D 406 Diode HZS6L(B1)
S 501 Switch(LPF/HPF) CSH1029
S 551 Switch(LPF/HPF) CSH1029
VR 501 Volume 20kΩ(E) CCS1266
VR 502 Volume 10kΩ(A) CCS1265
VR 551 Volume 20kΩ(E) CCS1266
VR 552 Volume 10kΩ(A) CCS1265
RESISTORS
R 103 RD1/4PU223J
R 104 RD1/4PU101J
R 105 RD1/4PU104J
R 106 RD1/4PU101J
R 107 RD1/4PU471J
R 109 RD1/4PU472J
R 110 RD1/4PU621J
R 111 RD1/4PU561J
R 112 RD1/4PU333J
R 203 RD1/4PU223J
R 204 RD1/4PU101J
R 205 RD1/4PU104J
R 206 RD1/4PU101J
R 207 RD1/4PU471J
R 209 RD1/4PU472J
R 210 RD1/4PU621J
R 211 RD1/4PU561J
R 212 RD1/4PU333J
R 303 RD1/4PU223J
R 304 RD1/4PU101J
R 305 RD1/4PU104J
R 306 RD1/4PU101J
R 307 RD1/4PU471J
R 309 RD1/4PU472J
R 310 RD1/4PU621J
R 311 RD1/4PU561J
R 312 RD1/4PU333J
R 403 RD1/4PU223J
R 404 RD1/4PU101J
R 405 RD1/4PU104J
=====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ -------------------------
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.....
D
E
B
C
F

20
GM-X1024,GM-X924
R 406 RD1/4PU101J
R 407 RD1/4PU471J
R 409 RD1/4PU472J
R 410 RD1/4PU621J
R 411 RD1/4PU561J
R 412 RD1/4PU333J
R 501 RD1/4PU472J
R 502 RD1/4PU472J
R 503 RD1/4PU472J
R 504 RD1/4PU472J
R 505 RD1/4PU103J
R 506 RD1/4PU103J
R 507 RD1/4PU472J
R 508 RD1/4PU472J
R 509 RD1/4PU103J
R 510 RD1/4PU103J
R 511 RD1/4PU103J
R 512 RD1/4PU103J
R 513 RD1/4PU123J
R 514 RD1/4PU123J
R 515 RD1/4PU562J
R 516 RD1/4PU562J
R 517 RD1/4PU123J
R 518 RD1/4PU123J
R 519 RD1/4PU222J
R 520 RD1/4PU222J
R 521 RD1/4PU101J
R 522 RD1/4PU101J
R 551 RD1/4PU472J
R 552 RD1/4PU472J
R 553 RD1/4PU472J
R 554 RD1/4PU472J
R 555 RD1/4PU103J
R 556 RD1/4PU103J
R 557 RD1/4PU472J
R 558 RD1/4PU472J
R 559 RD1/4PU103J
R 560 RD1/4PU103J
R 561 RD1/4PU103J
R 562 RD1/4PU103J
R 563 RD1/4PU123J
R 564 RD1/4PU123J
R 565 RD1/4PU562J
R 566 RD1/4PU562J
R 567 RD1/4PU123J
R 568 RD1/4PU123J
R 569 RD1/4PU222J
R 570 RD1/4PU222J
R 571 RD1/4PU101J
R 572 RD1/4PU101J
R 711 RD1/2PM222J
R 712 RD1/4PU103J
R 721 RD1/2PM222J
R 722 RD1/4PU103J
R 731 RD1/2PM222J
R 732 RD1/4PU103J
R 741 RD1/2PM222J
R 742 RD1/4PU103J
R 851 RD1/2PM471J
R 852 RD1/4PU223J
R 853 RD1/4PU103J
R 854 RD1/4PU332J
R 855 RN1/4PC1002D
R 856 RN1/4PC1002D
R 857 RN1/4PC7501D
R 858 RN1/4PC7501D
R 861 RD1/2PM471J
R 862 RD1/4PU223J
R 863 RD1/4PU103J
R 864 RD1/4PU332J
R 865 RN1/4PC1002D
R 866 RN1/4PC1002D
R 867 RN1/4PC7501D
R 868 RN1/4PC7501D
R 871 RD1/2PM471J
R 872 RD1/4PU223J
R 873 RD1/4PU103J
R 874 RD1/4PU332J
R 875 RN1/4PC1002D
R 876 RN1/4PC1002D
R 877 RN1/4PC7501D
R 878 RN1/4PC7501D
R 881 RD1/2PM471J
R 882 RD1/4PU223J
R 883 RD1/4PU103J
R 884 RD1/4PU332J
R 885 RN1/4PC1002D
R 886 RN1/4PC1002D
R 887 RN1/4PC7501D
R 888 RN1/4PC7501D
CAPACITORS
C 101 CEAS100M16
C 102 CQPA221G2A
C 107 CQPA102G2A
C 108 CFTLA104J50
C 109 CEAS101M16
C 110 CMA150J2H
C 119 CFTLA104J50
C 201 CEAS100M16
C 202 CQPA221G2A
C 207 CQPA102G2A
C 208 CFTLA104J50
C 209 CEAS101M16
C 210 CMA150J2H
C 219 CFTLA104J50
C 301 CEAS100M16
C 302 CQPA221G2A
C 307 CQPA102G2A
C 308 CFTLA104J50
C 309 CEAS101M16
C 310 CMA150J2H
C 319 CFTLA104J50
C 401 CEAS100M16
C 402 CQPA221G2A
C 407 CQPA102G2A
C 408 CFTLA104J50
C 409 CEAS101M16
C 410 CMA150J2H
C 419 CFTLA104J50
C 501 CCPUSL470J50
C 502 CCPUSL470J50
C 503 CFTLA104J50
C 504 CFTLA104J50
C 505 CFTLA104J50
C 506 CFTLA104J50
C 509 CKCYB101K50
=====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ -------------------------