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PIONEER CORPORATION
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) INC.
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
PIONEER EUROPE NV
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 2001
K-ZZA. DEC. 2001 Printed in Japan
ORDER NO.
CRT2819
BRIDGEABLE POWER AMPLIFIER
GM-X962
XR/UC,XR/ES
GM-X862
XR/UC
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........................................14
6. ADJUSTMENT .........................................................16
7. GENERAL INFORMATION.......................................17
7.1 DIAGNOSIS .......................................................17
7.1.1 DISASSEMBLY .............................................17
7.1.2 CONNECTOR FUNCTION DESCRIPTION ...18
8. OPERATIONS AND SPECIFICATIONS ....................19
GM-X962/XR/ES
For details, refer to "Important symbols for good services".


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2
GM-X962,X862
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.
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
[ Important symbols for good services ]
In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.
When you find the procedures bearing any of the symbols, be sure to fulfill them:
2. Adjustments
To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.
In accordance with the procedures or instructions described in this manual, adjustments should be performed.
3. Cleaning
For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,
proper cleaning should be performed to restore their performances.
5. Lubricants, glues, and replacement parts
Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying
glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the
prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed
ones should be used.
4. Shipping mode and shipping screws
To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or
the shipping screws should be installed before shipping out in accordance with this manual, if necessary.
1. Product safety
You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and
should keep the safety during servicing by following the safety instructions described in this manual.


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3
GM-X962,X862
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.
- For the applying amount of lubricants or glue, follow the instructions in this manual.
( In the case of no amount instructions, apply as you think it appropriate.)
- PACKING SECTION PARTS LIST
Part No.
Mark No. Description
GM-X962/XR/UC
GM-X962/XR/ES
GM-X862/XR/UC
*
1-1 PRC
HRY0019
Not used
HRY0019
1-2 Owner's Manual
HRD0186
HRD0188
HRD0186
1-3 Owner's Manual
Not used
HRD0189
Not used
*
1-4 Card
ARY1048
Not used
ARY1048
2 Screw
BYC40P180FZK
BYC40P180FZK
BYC40P180FZK
3 Polyethylene Bag
HEG0011
HEG0011
HEG0011
4 Polyethylene Bag
HEG0022
HEG0022
HEG0022
5 Carton
HHG0305
HHG0305
HHG0318
6 Contain Box
HHL0305
HHL0305
HHL0318
7 Protector
HHP0107
HHP0107
HHP0107
8 Cover
HNS0101
HNS0101
HNS0101
9 Screw Assy
HEA0058
HEA0058
HEA0058
- Owner's Manual
Model
Part No.
Language
GM-X962/XR/UC
HRD0186
English, French
GM-X962/XR/ES
HRD0188
English, Spanish
HRD0189
Portuguese(B), Arabic
GM-X862/XR/UC
HRD0186
English, French


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4
GM-X962,X862
2.2 EXTERIOR
A


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GM-X962,X862
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description
Part No.
Mark No. Description
Part No.
1 Screw
PPZ30P120FZK
2 Screw
BBZ30P050FUC
3 Screw
BBZ30P060FMC
4 Screw
BBZ30P080FMC
5 Screw
BSZ30P050FZK
6 Screw(M3x12)
CBA1323
7 Screw(M3x5)
HBA0006
8 Screw(M3x8)
HBA0011
9 Panel
See Contrast table(2)
10 Panel
See Contrast table(2)
11 Case
HNB0135
12 Holder
HNC0080
13 Heat Sink
See Contrast table(2)
14 Cover
HNS0101
15 Spacer
HNV0016
16 Amp Unit
See Contrast table(2)
17 Terminal(CN850)
CKF1059
18 Fuse(25A)
HEK0025
19 Pin Jack(CN851)
HKB0002
20 Terminal(CN853)
HKE0020
21 Terminal(CN854)
HKE0021
22 Terminal(CN855)
HKE0021
23 Buss Bar
HNC0043
24 Holder
HNC0082
25 Screw
PPZ30P100SAD
26 Light Pipe Unit
HXA0322
(2) CONTRAST TABLE
GM-X962/XR/UC, /XR/ES and GM-X862/XR/UC are constructed the same except for the following:
Part No.
Mark No. Description
GM-X962/XR/UC
GM-X962/XR/ES
GM-X862/XR/UC
9 Panel
HNB0172
HNB0172
HNB0180
10 Panel
HNB0167
HNB0167
HNB0179
13 Heat Sink
HNR0207
HNR0207
HNR0213
16 Amp Unit
HWH0169
HWH0171
HWH0182