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. MAR. 2000 Printed in Japan
ORDER NO.
CRT2480
BRIDGEABLE POWER AMPLIFIER
GM-X642
X1R/EW
Service
Manual
CONTENTS
1. SAFETY INFORMATION............................................2
2. EXPLODED VIEWS AND PARTS LIST ......................3
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-X542
X1R/UC,ES
GM-X642/X1R/EW
2
GM-X642,X542
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
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-X642,X542
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
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-X642/X1R/EW
GM-X542/X1R/UC
GM-X542/X1R/ES
1-1 Owner's Manual
HRD0136
HRD0135
HRD0137
1-2 Owner's Manual
Not used
Not used
HRD0143
*
1-3 Warranty Card
HRY1157
Not used
Not used
*
1-4 Card
Not used
ARY1048
Not used
2 Screw
BYC40P180FZK
BYC40P180FZK
BYC40P180FZK
3 Polyethylene Bag
HEG0011
HEG0011
HEG0011
4 Polyethylene Bag
HEG0009
HEG0009
HEG0009
5 Carton
HHG0242
HHG0241
HHG0243
6 Contain Box
HHL0242
HHL0241
HHL0243
7 Protector
HHP0078
HHP0078
HHP0078
8 ·····
9 Cover
HNS0101
HNS0101
HNS0101
4
GM-X642,X542
2.2 EXTERIOR
5
GM-X642,X542
(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 Panel
See Contrast table(2)
5 Case
See Contrast table(2)
6 Heat Sink
See Contrast table(2)
7 Plate
HNS0077
8 Plate
HNS0081
9 Cover
HNS0101
10 Amp Unit
See Contrast table(2)
11 Terminal(CN902)
CKF1059
12 Pin Jack(CN851)
HKB0001
13 Pin Jack(CN852)
HKB0001
14 Terminal(CN901)
HKE0036
15 Terminal(CN601)
HKE0035
16 Clip
HNC0054
17 Heat Sink
HNR0151
18 Screw
PPZ30P100SAD
19 Light Pipe Unit
HXA0322
20 Screw
PPZ30P100FZK
21 Fuse Holder
HKE0012
22 Fuse(FU902)(25A)
HEK0025
23 Thermistor(TH902)
CCX1013
24 Screw(M2.6x6)
HBA0012
(2) CONTRAST TABLE
GM-X642/X1R/EW and GM-X542/X1R/UC, ES are constructed the same except for the following:
Part No.
Mark No. Description
GM-X642/X1R/EW
GM-X542/X1R/UC
GM-X542/X1R/ES
4 Panel
HNB0111
HNB0112
HNB0112
5 Case
HNB0116
HNB0114
HNB0114
6 Heat Sink
HNR0150
HNR0156
HNR0156
10 Amp Unit
HWH0130
HWH0129
HWH0131