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-ZZA. FEB. 2000 Printed in Japan
ORDER NO.
CRT2479
BRIDGEABLE FOUR-CHANNEL POWER AMPLIFIER
GM-X644
X1R/UC,EW
Service
Manual
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 .........................................................20
7. GENERAL INFORMATION.......................................21
7.1 DISASSEMBLY ..................................................21
8. OPERATIONS AND SPECIFICATIONS ....................22
GM-X544
X1R/UC,ES
GM-X644/X1R/UC
2
GM-X644,X544
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
1. SAFETY INFORMATION
- GM-X644/X1R/UC, GM-X544/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.
WARNING
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-X644,X544
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.
Mark No. Description
GM-X644/X1R/UC
GM-X644/X1R/EW
GM-X544/X1R/UC
GM-X544/X1R/ES
1 ·····
2 Screw
BYC40P180FZK
BYC40P180FZK
BYC40P180FZK
BYC40P180FZK
3 Polyethylene Bag
HEG0011
HEG0011
HEG0011
HEG0011
4 Polyethylene Bag
HEG0013
HEG0013
HEG0013
HEG0013
5 Carton
HHG0237
HHG0238
HHG0236
HHG0239
6 Contain Box
HHL0237
HHL0238
HHL0236
HHL0239
7 Protector
HHP0076
HHP0076
HHP0076
HHP0076
8-1 Owner's Manual
HRD0132
HRD0133
HRD0131
HRD0134
8-2 Owner's Manual
Not used
Not used
Not used
HRD0142
*
8-3 PRC
HRY0012
Not used
HRY0012
Not used
*
8-4 Warranty Card
Not used
HRY1157
Not used
Not used
*
8-5 Card
Not used
Not used
ARY1048
Not used
9 Cover
HNS0101
HNS0101
HNS0101
HNS0101
- Owner's Manual
Model
Part No.
Language
GM-X644/X1R/UC
HRD0132
English, French
GM-X644/X1R/EW
HRD0133
English, Spanish, German,
French, Italian, Dutch
GM-X544/X1R/UC
HRD0131
English, French
GM-X544/X1R/ES
HRD0134
English, Spanish
HRD0142
Portuguese(B), Arabic
4
GM-X644,X544
2.2 EXTERIOR
5
GM-X644,X544
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description
Part No.
Mark No. Description
Part No.
1 Screw
BBZ30P060FMC
2 Screw
BBZ30P080FMC
3 Screw
BSZ30P050FZK
4 Screw(M2.6x6)
HBA0012
5 Panel
See Contrast table(2)
6 Case
See Contrast table(2)
7 Heat Sink
See Contrast table(2)
8 Plate
HNS0078
9 Plate
HNS0080
10 Cover
HNS0101
11 Amp Unit
See Contrast table(2)
12 Terminal(CN902)
CKF1059
13 Fuse(25A)
HEK0025
14 Pin Jack(CN852)
HKB0002
15 Pin Jack(CN851)
HKB0006
16 Terminal(CN853)
HKE0006
17 Connector(CN301)
HKE0030
18 Clip
HNC0054
19 Heat Sink
HNR0166
20 Heat Sink
HNR0167
21 Screw
PPZ30P100SAD
22 Light Pipe Unit
HXA0322
23 Screw
PPZ30P100FZK
24 Fuse Holder
HKE0012
25 Connector(CN601)
HKE0020
26 Transistor(Q616)
2SD2395
27 Transistor(Q617)
2SB1566
28 Diode(D610)
FML22S
29 Diode(D611)
FML22R
30 Thermistor(TH601, 602)
CCX1013
(2) CONTRAST TABLE
GM-X644/X1R/UC, EW and GM-X544/X1R/UC, ES are constructed the same except for the following:
Part No.
Mark No. Description
GM-X644/X1R/UC
GM-X644/X1R/EW
GM-X544/X1R/UC
GM-X544/X1R/ES
5 Panel
HNB0109
HNB0109
HNB0110
HNB0110
6 Case
HNB0115
HNB0115
HNB0113
HNB0113
7 Heat Sink
HNR0157
HNR0157
HNR0155
HNR0155
11 Amp Unit
HWH0117
HWH0126
HWH0125
HWH0127