Pioneer GMX-1024, GMX-924 Service manual

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GM-X1024/X1R/UC

BRIDGEABL FOUR-CHANNEL POWER AMPLIFIER

GM-X1024 X1R/UC

Se

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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

3

5

4

2

10

8

9

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.

W

ARNING

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

1

234

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

5

6

7

8

A

B

C

D

5

6

A

E

F

A-b

7

8

Fig. 3

POWER STAGE

OVER CURRENT DETECTOR

THERMO DETECTOR / PROTECTOR
OVER VOLTAGE DETECTOR / PROTECTOR
MUTE CONTROL
REGULATOR CONTROL

F

E

A

20.4dBm

0V

0.2V

14.4V

14.2V

10.7V

14.4V

0.1V

3.2V

0.3V

5V

0V

0.2V
0V

14.4V

10

GM-X1024,GM-X924

A

1

234

B

C

D

2

34

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