Pioneer GMX-524, GMX-624 Service manual
ORDER NO.
CRT2202
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BRIDGEABLE FOUR-CH CHANNEL POWER AMPLIFIER
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-ZEU. APR. 1998 Printed in Japan
GM-X624 X1R/UC, ES, EW
CONTENTS
1. SAFETY INFORMATION ............................................1
2. EXPLODED VIEWS AND PARTS LIST.......................2
3. SCHEMATIC DIAGRAM .............................................6
4. PCB CONNECTION DIAGRAM ................................12
5. ELECTRICAL PARTS LIST ........................................14
6. ADJUSTMENT..........................................................18
7. GENERAL INFORMATION .......................................18
7.1 IC .........................................................................18
7.2 DISASSEMBLY ...................................................19
8. OPERATIONS AND SPECIFICATIONS.....................20
GM-X524 X1R/UC
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.
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 & 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.
GM-X624/X1R/UC
2
GM-X624, GM-X524
3
5
4
2
1
8
9
6
7
9
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
- PACKING SECTION PARTS LIST
Part No.
GM-X624 GM-X524
Mark No. Symbol and Description X1R/UC X1R/ES X1R/EW X1R/UC
1 Owner’s Manual HRD0037 HRD0039 HRD0040 HRD0038
Owner’s Manual Not used HRD0071 Not used Not used
* 2 Screw Assy HEA0017 HEA0017 HEA0017 HEA0017
3 Screw BYC40P180FZK BYC40P180FZK BYC40P180FZK BYC40P180FZK
4 Polyethylene Bag HEG0011 HEG0011 HEG0011 HEG0011
* 5 Warranty Card HRY1070 Not used HRY1087 Not used
* Card Not used Not used Not used ARY1048
6 Polyethylene Bag HEG0012 HEG0012 HEG0012 HEG0012
7 Carton HHG0145 HHG0147 HHG0148 HHG0146
8 Contain Box HHL0145 HHL0147 HHL0148 HHL0146
9 Protector HHP0025 HHP0025 HHP0025 HHP0025
- Owner's Manual
Model Part No. Language
GM-X624/X1R/UC HRD0037 English, French
GM-X624/X1R/ES HRD0039 English, Spanish
HRD0071 Arabic, Portuguese(B)
GM-X624/X1R/EW HRD0040 English, French, German, Dutch, Spanish, Italian
GM-X524/X1R/UC HRD0038 English, French
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.
GM-X624, GM-X524
3
2.2 EXTERIOR
4
GM-X624, GM-X524
1 Screw(M3x12) CBA1323
2 Screw(M3x14) CBA1382
3 Screw HBA0006
4 Screw HBA0011
5 Cord Assy HDE0022
6 Case HNB0036
7 Heat Sink
See Contrast table(2)
8 Spacer HNV3975
9 Amp Unit
See Contrast table(2)
10 Screw BMS30P060FZK
11 Screw BMS30P080FMC
12 Cord(CN303) HDE0020
13 Bass Bar HNC0034
14 Bass Bar HNC0035
15 Bass Bar HNC0036
16 Bass Bar HNC0037
17 Bass Bar HNC0043
18 Bass Bar HNC0044
19 Clip HNC0054
20 Heat Sink HNR0085
21 Heat Sink HNR0086
22 Clamper HNV0015
23 Fuse(20A) HEK0020
24 Pin Jack(CN853) HKB0002
25 Pin Jack(CN851) HKB0004
26 Terminal(CN601) HKE0002
27 Terminal(CN301,CN302) HKE0010
28 Terminal(CN602) HKE0012
29 Holder HNC0025
30 Holder HNC0026
31 Screw PPZ30P060FZK
32 Plate Unit
See Contrast table(2)
33 Badge Unit See Contrast table(2)
34 Light Pipe Unit HXA0201
35 Panel Unit
See Contrast table(2)
36 Plate See Contrast table(2)
37 Panel Unit See Contrast table(2)
38 Plate See Contrast table(2)
39 Diode(D611) YG902N2
40 Diode(D910) YG902C2
41 Transistor(Q329-Q332) 2SC1568
42 Thermistor
(TH601,TH602) CCX1013
43 Transistor(Q333-Q336) 2SD2438
44 Transistor(Q337-Q340) 2SB1587
45 FET(Q610-Q615) IRFIZ44N
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No.
Mark No. Description Part No.
(2) CONTRAST TABLE
GM-X624/X1R/UC, GM-X624/X1R/ES, GM-X624/X1R/EW and GM-X524/X1R/UC are constructed the same except for the
following:
Part No.
GM-X624 GM-X524
Mark No. Symbol and Description X1R/UC X1R/ES X1R/EW X1R/UC
7 Heat Sink HNR0069 HNR0070 HNR0070 HNR0102
9 Amp Unit HWH0048 HWH0046 HWH0045 HWH0047
32 Plate Unit HXA0104 HXA0105 HXA0105 HXA0105
33 Badge Unit HXA0261 HXA0113 HXA0113 HXA0113
35 Panel Unit HXA0253 HXA0252 HXA0252 HXA0252
36 Panel * HNS0065 HNS0046 HNS0046 HNS0046
37 Panel Unit HXA0258 HXA0257 HXA0257 HXA0257
38 Panel * HNS0064 HNS0039 HNS0039 HNS0039
5
GM-X624, GM-X524
GM-X624, GM-X524
20k(E)
20k(E)
20k(E)
20k(E)
20k(E)
20k(E)
20k(E)
20k(E)
0V
2.2V
0.3V
1.8V
3.8V
0V
1.8V
3.9V
3.9V
14.4V
5V
5V
2.4V
2.4V
PWM CONTROL
BUFFER AMP
ISOLATOR
100H
100H
6
A
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-a A-b
A-a
A-b
A-b
A-a
Large size
SCH diagram
Guide page
Detailed page
A-a
7
GM-X624, GM-X524
5
A
B
C
D
10k(A)
10k(A)
0.2V
14.4V
14.2V
10.7V
14.4V0V
0.2V
0V
5V
0.3V
3.2V
0.1V
0V
.2V
V
8V
POWER CONTROL /MUTE
50H
HEK0020
HEK0020
Fig. 3
A
: AUDIO SIGNL
AMP UNIT
A
A-b
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