Pioneer GMX-554 Service manual
PIONEER 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 EUROPE N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 2000
K-ZZS. NOV. 2000 Printed in Japan
ORDER NO.
CRT2613
BRIDGEABLE FOUR-CHANNEL POWER AMPLIFIER
GM-X554 X1R/UC
GM-X554/X1R/EW
CONTENTS
1. SAFETY INFORMATION............................................2
2. EXPLODED VIEWS AND PARTS LIST ......................2
3. SCHEMATIC DIAGRAM.............................................6
4. PCB CONNECTION DIAGRAM................................12
5. ELECTRICAL PARTS LIST........................................16
6. ADJUSTMENT .........................................................19
7. GENERAL INFORMATION.......................................20
7.1 DISASSEMBLY ..................................................20
8. OPERATIONS AND SPECIFICATIONS....................21
GM-X554
X1R/EW
GM-X554 X1R/ES
2
GM-X554
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
1. SAFETY INFORMATION
- GM-X554/X1R/UC
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
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
3
GM-X554
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.
- Owner's Manual
Model Part No. Language
GM-X554/X1R/UC HRD0167 English, French
GM-X554/X1R/EW HRD0159 English, Spanish, German,
French, Italian, Dutch
GM-X554/X1R/ES HRD0168 English, Spanish
HRD0174 Portuguese(B), Arabic
- PACKING SECTION PARTS LIST
Part No.
Mark No. Description GM-X554/X1R/UC GM-X554/X1R/EW GM-X554/X1R/ES
* 1-1 Warranty Card Not used HRY1157 Not used
1-2 Owner’s Manual HRD0167 HRD0159 HRD0168
1-3 Owner’s Manual Not used Not used HRD0174
* 1-4 Card ARY1048 Not used Not used
2 Screw BYC40P180FZK BYC40P180FZK BYC40P180FZK
3 Polyethylene Bag HEG0011 HEG0011 HEG0011
4 Polyethylene Bag HEG0022 HEG0022 HEG0022
5 Carton HHG0281 HHG0281 HHG0281
6 Contain Box HHL0281 HHL0281 HHL0281
7 Protector HHP0107 HHP0107 HHP0107
8 Cover HNS0101 HNS0101 HNS0101
4
GM-X554
2.2 EXTERIOR
A
5
GM-X554
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No.
Mark No. Description Part No.
1 Screw BBZ30P050FMC
2 Screw BBZ30P060FMC
3 Screw BBZ30P080FMC
4 Screw BSZ30P050FZK
5 Screw(M3x12) CBA1323
6 Screw(M3x5) HBA0006
7 Screw(M3x8) HBA0011
8 Panel
See Contrast table(2)
9 Case HNB0134
10 Panel
See Contrast table(2)
11 Holder HNC0080
12 Heat Sink
See Contrast table(2)
13 Cover HNS0101
14 Spacer HNV0016
15 Amp Unit
See Contrast table(2)
16 Terminal(CN604) CKF1059
17 Fuse(20A) HEK0020
18 Pin Jack(CN852) HKB0002
19 Pin Jack(CN851) HKB0006
20 Terminal(CN601) HKE0020
21 Connector(CN301) HKE0030
22 Clip HNC0054
23 Holder HNC0082
24 Screw PPZ30P100SAD
25 Light Pipe Unit HXA0322
26 Screw PPZ30P100FZK
(2) CONTRAST TABLE
GM-X554/X1R/UC, EW and ES are constructed the same except for the following:
Part No.
Mark No. Description GM-X554/X1R/UC GM-X554/X1R/EW GM-X554/X1R/ES
8 Panel HNB0128 HNB0147 HNB0128
10 Panel HNB0136 HNB0142 HNB0136
12 Heat Sink HNR0181 HNR0187 HNR0181
15 Amp Unit HWH0148 HWH0147 HWH0149
OUTPUT L
OUTPUT R
INPUT SELECT
ISOLATOR
GAIN = 1
HP/LP FILTER
40 - 120Hz
12dB/OCTAVE
HP/LP FILTER
BFC
±25V
REGULATOR
V
V
(EW,ES model)
DC/DC CONVERTER
6
GM-X554
A
1
234
B
C
D
12
34
A-a A-b
A-aA-a
A-b A-b
A-b A-b
A-a 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-a
A
GAIN
POWER AMP
AMP GAIN = 7 - 31dB
POWER
CONTROL /
MUTE
AMP UNIT
A
7
GM-X554
5
6
7
8
A
B
C
D
5
6
7
8
A-b
A
8
GM-X554
A
1
234
B
C
D
12
34
OUTPUT L
OUTPUT R
INPUT SELECT
ISOLATOR
GAIN = 1
HP/LP FILTER
40 - 120Hz
12dB/OCTAVE
HP/LP FILTER
V
V
A-a
A-b
A-a
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