Pioneer GM-X422 User manual

ORDER NO.
CRT2167
Se r v i c e
M a nu a l
BRIDGEABLE 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. JAN. 1998 Printed in Japan
GM-X422 X1R/UC, ES, EW
CONTENTS
1. SAFETY INFORMATION ............................................1
2. EXPLODED VIEWS AND PARTS LIST.......................2
3. SCHEMATIC DIAGRAM .............................................6
4. PCB CONNECTION DIAGRAM ..................................8
5. ELECTRICAL PARTS LIST ........................................12
6. ADJUSTMENT..........................................................14
7. GENERAL INFORMATION .......................................15
7.1 DISASSEMBLY ...................................................15
8. OPERATIONS AND SPECIFICATIONS.....................16
1. SAFETY INFORMATION
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 mot risk trying to do so
and refer the repair to a qualified service technician.
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
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxi-
cant 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-X322 X1R/UC

2
GM-X422, GM-X322
2. EXPLODED VIEWS AND PARTS LIST
2.1. PACKING
1 Contain Box See Contrast table (2)
2 Carton See Contrast table (2)
3 Protector HHP0020
4 Polyethylene Bag HEG0010
5 Screw(x4) BYC40P180FZK
6 Polyethylene Bag HEG0011
7 Terminal(x8) See Contrast table (2)
8 Cord Assy See Contrast table (2)
9-1 Owner’s Manual See Contrast table (2)
9-2 Owner’s Manual See Contrast table (2)
* 9-3 Warranty Card HRY1070
* 9-4 Caution Card See Contrast table (2)
* 9-5 Card See Contrast table (2)
(1) PACKING SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
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.
Fig. 1

3
GM-X422, GM-X322
(2) CONTRAST TABLE
GM-X422/X1R/UC, GM-X422/X1R/ES, GM-X422/X1R/EW and GM-X322/X1R/UC are constructed the same except for the
following:
Part No.
GM-X422 GM-X322
Mark No. Symbol and Description X1R/UC X1R/ES X1R/EW X1R/UC
1 Contain Box HHL0134 HHL0135 HHL0136 HHL0133
2 Carton HHG0134 HHG0135 HHG0136 HHG0133
7 Terminal(x8) HKC0001 HKC0003 HKC0003 HKC0003
8 Cord Assy Not used HDE4419 HDE4419 Not used
9-1 Owner’s Manual HRD0048 HRD0045 HRD0047 HRD0046
9-2 Owner’s Manual Not used HRD0049 Not used Not used
* 9-3 Warranty Card HRY1070 Not used HRY1087 Not used
* 9-4 Caution Card HRP0006 Not used Not used Not used
* 9-5 Card Not used Not used Not used ARY1048
-Owner's Manual
Model Part No. Language
GM-X422/X1R/UC HRD0048 English, French
GM-X422/X1R/ES HRD0045 English, Spanish
HRD0049 Arabic, Portuguese(B)
GM-X422/X1R/EW HRD0047 English, French, German, Dutch, Spanish, Italian
GM-X322/X1R/UC HRD0046 English, French

4
GM-X422, GM-X322
2.2. EXTERIOR
Fig. 2

5
GM-X422, GM-X322
1 Screw BSZ30P050FZK
2 Screw(M3x6) CBA1320
3 Screw(M3x12) CBA1323
4 Screw CBA1382
5 Screw HBA0006
6 Cord Assy See Contrast table (2)
7 Fuse(15A) See Contrast table (2)
8 Ground Wire(Black) See Contrast table (2)
9 Holder CNC5399
10 Panel See Contrast table (2)
11 Case HNB0016
12 Panel See Contrast table (2)
13 Spacer HNM0026
14 Heat Sink See Contrast table (2)
15 Spacer HNV3975
16 Amp Unit See Contrast table (2)
17 Screw BMS30P060FZK
18 Screw BMS30P080FMC
19 Plug(CN855) CKS1618
20 Clamper HNV0006
21 Connector(CN853) HDE4418
22 Cord(CN551) HDE4610
23 Fuse(20A) HEK0020
24 Heat Sink(Sub Heat Sink) HNR0053
25 Heat Sink(Sub Heat Sink) HNR0054
26 Pin Jack(CN851) See Contrast table (2)
27 Terminal(CN901) See Contrast table (2)
28 Terminal(CN651) See Contrast table (2)
29 Holder HNC0006
30 Screw PPZ30P060FZK
31 Plate Unit See Contrast table (2)
32 •••••
33 Transistor(Q561,562) 2SD2438
34 Transistor(Q563,564) 2SB1587
35 Transistor(Q555,556) 2SD2343
36 Thermistor(TH901) CCX1013
37 FET(Q905,906) IRFIZ44N
38 Diode(D907) ESAC25M-02C
39 Diode(D910) ESAC25M-02N
40 System Remote Control See Contrast table (2)
41 Badge Unit See Contrast table (2)
42 Light Pipe Unit HXA0182
43 Special Red Battery Wire See Contrast table (2)
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
(2) CONTRAST TABLE
GM-X422/X1R/UC, GM-X422/X1R/ES, GM-X422/X1R/EW and GM-X322/X1R/UC are constructed the same except for the
following:
Part No.
GM-X422 GM-X322
Mark No. Symbol and Description X1R/UC X1R/ES X1R/EW X1R/UC
6 Cord Assy Not used HDE4453 HDE4453 Not used
7 Fuse(15A) Not used HEK0015 HEK0015 Not used
8 Ground Wire(Black) Not used HDE4455 HDE4455 Not used
10 Panel HNB0055 HNB0073 HNB0056 HNB0058
12 Panel HNB0050 HNB0072 HNB0072 HNB0051
14 Heat Sink HNR0092 HNR0099 HNR0099 HNR0096
16 Amp Unit HWH0059 HWH0057 HWH0056 HWH0058
26 Pin Jack(CN851) HKB0006 HKB0005 HKB0005 HKB0003
27 Pin Jack(CN901) HKE0002 HKE0001 HKE0001 HKE0001
28 Pin Jack(CN651) HKE0008 HKE0007 HKE0003 Not used
31 Plate Unit HXA0166 HXA0163 HXA0163 HXA0163
40 System Remote Control Not used HDE0007 HDE0007 Not used
41 Badge Unit HXA0168 HXA0164 HXA0164 HXA0164
43 Special Red Battery Wire Not used HDE4454 HDE4454 Not used

6
GM-X422, GM-X322
A
1234
B
C
D
1234
3. SCHEMATIC DIAGRAM
Note: When ordering service parts, be sure to refer to "EXPLODED VIEWS AND PARTS LIST" or "ELECTRICAL PARTS
LIST".
MOTHER PCB
A
ISOLATOR PCB
B
UC and ES models only
C851, 852
UC, ES : 100P
EW : 470P
R469
R470
22k
22k
R469, 470 : GM-X322 only
VR452 : GM-X422 only
10/50
10/50
4R7/50
4R7/50
SPEAKER INPUT LEVEL
LPF / HPF
BASS BOOST
+15 REGULATOR
-15
REGULATOR
SWITCHING REGULATOR
THERMO-DETECTION
MUTE
L
R
R
L
AMP UNIT
Consists of
MOTHER PCB
ISOLATOR PCB
: AUDIO SIGNAL
SIGNAL ROUTE
A
B

7
GM-X422, GM-X322
5678
A
B
C
D
5678
ES and EW
models only
ES and EW
models only
22/50
MUTE
BUFFER AMP
PRE DRIVER POWER AMP
OVER CURRENT
DETECTOR
OVER VOLTAGE
PROTECTOR
SWITCHING
CONTROL
POWER CONTROL / MUTE
OVER CURRENT
DETECTOR
HEK0015 15A
GROUND WIRE
BATTERY WIRE
SYSTEM REMOTE
CONTROL
Fig. 3
A

8
GM-X422, GM-X322
A
1234
B
C
D
1234
4. PCB CONNECTION DIAGRAM
A
G
G
CORD ASSY
A
MOTHER PCB
Capacitor
Connector
P.C.Board Chip Part
SIDE A
SIDE B
NOTE FOR PCB DIAGRAMS
1. The parts mounted on this PCB
include all necessary parts for
several destination.
For further information for
respective destinations, be sure
to check with the schematic dia-
gram.
2. Viewpoint of PCB diagrams

9
GM-X422, GM-X322
5678
A
B
C
D
5678
Fig. 4
B
A
SIDE A
OUT IN
B
ISOLATOR PCB

10
GM-X422, GM-X322
A
1234
B
C
D
1234
A
B
B
ISOLATOR PCB
A
MOTHER PCB