Pioneer GM-X952 User 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 NV 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.
CRT2612
BRIDGEABLE POWER AMPLIFIER
GM-X952 X1R/UC,EW,ES
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........................................14
6. ADJUSTMENT.........................................................16
7. GENERAL INFORMATION.......................................17
7.1 DISASSEMBLY ..................................................17
8. OPERATIONS AND SPECIFICATIONS....................18
GM-X952/X1R/EW

2
GM-X952
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
1. SAFETY INFORMATION
-GM-X952/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-X952
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-X952/X1R/UC HRD0169 English, French
GM-X952/X1R/EW HRD0156 English, Spanish, German,
French, Italian, Dutch
GM-X952/X1R/ES HRD0170 English, Spanish
HRD0171 Portuguese(B), Arabic
-PACKING SECTION PARTS LIST
Part No.
Mark No. Description GM-X952/X1R/UC GM-X952/X1R/EW GM-X952/X1R/ES
* 1-1 Warranty Card Not used HRY1157 Not used
1-2 Owner’s Manual HRD0169 HRD0156 HRD0170
1-3 Owner’s Manual Not used Not used HRD0171
* 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 HHG0277 HHG0277 HHG0277
6 Contain Box HHL0277 HHL0277 HHL0277
7 Protector HHP0107 HHP0107 HHP0107
9 Cover HNS0101 HNS0101 HNS0101

4
GM-X952
2.2 EXTERIOR
A

5
GM-X952
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Screw PPZ30P100FZK
2 Screw BBZ30P050FMC
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-X952/X1R/UC, EW and ES are constructed the same except for the following:
Part No.
Mark No. Description GM-X952/X1R/UC GM-X952/X1R/EW GM-X952/X1R/ES
9 Panel HNB0129 HNB0144 HNB0129
10 Panel HNB0130 HNB0140 HNB0130
13 Heat Sink HNR0181 HNR0187 HNR0181
16 Amp Unit HWH0139 HWH0138 HWH0140

INPUT
(-35V)
(+35V)
±15V
REGULATOR ±35V
REGULATOR
MUTE
PWM
CONTROLLER
BFC
LPF SELECT
AMP UNIT
ISOLATOR
GAIN = 1
LP FILTER
80Hz - 12dB/OCT
(EW,ES model)
A
DC/DC CONVERTER
6
GM-X952
A
1234
B
C
D
1234
A-a A-b
A-aA-a A-bA-b
A-bA-b
A-aA-a
Large size
SCH diagram
Guide page
Detailed page
3. SCHEMATIC DIAGRAM
3.1 AMP UNIT(GUIDE PAGE)
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS
LIST”.
A-a
A

POWER AMP
POWER
CONTROL /
MUTE
OVER
CURRENT
DETECTOR
AMP GAIN = 9 - 34dB
7
GM-X952
5678
A
B
C
D
5678
A-b
A

8
GM-X952
A
1234
B
C
D
1234
INPUT
LPF SELECT
AMP UNIT
ISOLATOR GAIN = 1
LP FILTER 80Hz - 12dB/OCT
A
A-a A-b
A-a

9
GM-X952
5678
A
B
C
D
5678
(-35V)
(+35V)
±15V
REGULATOR ±35V
REGULATOR
MUTE
PWM
CONTROLLER
BFC
(EW,ES model)
DC/DC CONVERTER
A-a A-b
2
3
1
A-a

10
GM-X952
A
1234
B
C
D
1234
POWER AMP
OVER
CURRENT
DETECTOR
AMP GAIN = 9 - 34dB
A-a A-b
A-b

11
GM-X952
5678
A
B
C
D
5678
POWER
CONTROL /
MUTE
A-a A-b
2
3
1
A-b

12
GM-X952
A
1234
B
C
D
1234
AMP UNIT
4. PCB CONNECTION DIAGRAM
4.1 AMP UNIT
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
diagram.
2. Viewpoint of PCB diagrams
Capacitor
Connector
P.C.Board Chip Part
SIDE A
SIDE B
A
LR
INPUT
LPF SELECT
GAIN
A

13
GM-X952
5678
A
B
C
D
5678
SPEAKER
OUTPUT
SPEAKER
OUTPUT
BFC
FUSE
POWER
A

14
GM-X952
Q 903 Transistor 2SB1277
Q 904 Transistor 2SB1277
Q 905 FET STP55NE06FP
Q 906 FET STP55NE06FP
Q 907 Transistor 2SD1864
Q 908 Transistor 2SB1243
Q 909 Transistor 2SD1919
Q 910 Transistor 2SD1919
Q 911 FET STP55NE06FP
Q 912 FET STP55NE06FP
Q 913 FET STP55NE06FP
Q 914 FET STP55NE06FP
D 553 Diode 1SS133
D 554 Diode 1SS133
D 555 Diode 1SS133
D 556 Diode 1SS133
D 557 Diode 1SS133
D 558 Diode 1SS133
D 560 Diode 1SS133
D 561 Diode 1SS133
D 562 Diode 1SS133
D 563 Diode 1SS133
D 601 LED BR4361F
D 653 Diode 1SS133
D 654 Diode HZS7L(B2)
D 658 Diode 1SS133
D 659 Diode 1SS133
D 661 Diode 1SS133
D 662 Diode ERA15-02VH
D 663 Diode ERA15-02VH
D 901 Diode RM4Z
D 907 Diode FML22S
D 908 Diode HZS16L(1)
D 909 Diode HZS16L(1)
D 910 Diode FML22R
L 851 Ferri-Inductor CTF1007
L 852 Ferri-Inductor CTF1007
T 901 Transformer HTT0006
TH 901 Thermistor CCX1013
TH 902 Thermistor CCX1013
TH 903 Thermistor CCX1035
S 101 Switch(LPF SELECT) CSH1021
S 901 Switch(BFC)(EW,ES model) HSH-156
VR 453 Volume 10kΩ(A) CCS1241
Fuse 25A HEK0025
RESISTORS
R 123 RD1/4PU222J
R 124 RD1/4PU222J
R 203 RD1/4PU472J
R 204 RD1/4PU472J
R 465 RD1/4PU910J
5. ELECTRICAL PARTS LIST
NOTE:
-Parts whose parts numbers are omitted are subject to being not supplied.
-The part numbers shown below indicate chip components.
Chip Resistor
RS1/_S___J,RS1/__S___J
Chip Capacitor (except for CQS.....)
CKS....., CCS....., CSZS.....
Unit Number : HWH0139(GM-X952/X1R/UC)
: HWH0138(GM-X952/X1R/EW)
: HWH0140(GM-X952/X1R/ES)
Unit Name : Amp Unit
MISCELLANEOUS
IC 101 IC NJM4558L
IC 651 IC PA2027A
IC 851 IC NJM2068D
IC 852 IC NJM2068D
IC 901 IC UPC494C
Q 203 Transistor DTA124ES
Q 204 Transistor 2SC2458
Q 205 Transistor 2SC2458
Q 551 Transistor 2SA992
Q 552 Transistor 2SA992
Q 553 Transistor 2SA992
Q 554 Transistor 2SA992
Q 555 Transistor 2SC5168
Q 556 Transistor 2SC5168
Q 559 Transistor 2SC1845
Q 560 Transistor 2SC1845
Q 561 Transistor 2SA992
Q 562 Transistor 2SA992
Q 563 Transistor 2SC1845
Q 564 Transistor 2SC1845
Q 565 Transistor 2SC1845
Q 566 Transistor 2SC1845
Q 571 Transistor 2SD1768S
Q 572 Transistor 2SD1768S
Q 580 Transistor 2SA1358
Q 581 Transistor 2SC3421
Q 582 Transistor 2SA1907
Q 583 Transistor 2SC5099
Q 584 Transistor 2SA1907
Q 585 Transistor 2SC5099
Q 586 Transistor 2SC3421
Q 587 Transistor 2SA1358
Q 588 Transistor 2SC5099
Q 589 Transistor 2SA1907
Q 590 Transistor 2SC5099
Q 591 Transistor 2SA1907
Q 653 Transistor 2SA1048
Q 654 Transistor 2SC2458
Q 655 Transistor 2SC2458
Q 657 Transistor 2SA1048
Q 658 Transistor 2SC2458
Q 659 Transistor 2SA1048
Q 660 Transistor 2SB1243
Q 661 Transistor 2SC2458
Q 902 Transistor 2SA1048
=====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ -------------------------
A

15
GM-X952
R 466 RD1/4PU910J
R 555 RD1/4PU103J
R 556 RD1/4PU103J
R 557 RD1/4PU333J
R 558 RD1/4PU333J
R 559 RD1/4PU331J
R 560 RD1/4PU331J
R 561 RD1/4PU331J
R 562 RD1/4PU331J
R 563 RD1/4PU681J
R 564 RD1/4PU681J
R 565 RD1/4PU361J
R 566 RD1/4PU361J
R 567 RD1/4PU333J
R 568 RD1/4PU333J
R 569 RD1/4PU681J
R 570 RD1/4PU681J
R 571 RD1/4PU223J
R 572 RD1/4PU223J
R 575 RD1/4PU101J
R 576 RD1/4PU101J
R 579 RD1/4PU681J
R 580 RD1/4PU681J
R 581 RD1/4PU181J
R 582 RD1/4PU181J
R 583 RD1/4PU100J
R 584 RD1/4PU100J
R 585 RD1/4PU100J
R 586 RD1/4PU100J
R 587 RD1/4PU100J
R 588 RD1/4PU100J
R 589 RD1/4PU100J
R 590 RD1/4PU100J
R 591 RD1/4PU221J
R 592 RD1/4PU221J
R 593 RD1/4PU100J
R 594 RD1/4PU100J
R 595 RD1/4PU100J
R 596 RD1/4PU100J
R 597 RD1/4PU564J
R 598 RD1/4PU564J
R 599 RD1/4PU473J
R 600 RD1/4PU473J
R 601 RS1/2PMF100J
R 602 RS1/2PMF100J
R 603 0.22ΩCCN1013
R 604 0.22ΩCCN1013
R 605 0.22ΩCCN1013
R 606 0.22ΩCCN1013
R 607 0.22ΩCCN1013
R 608 0.22ΩCCN1013
R 609 0.22ΩCCN1013
R 610 0.22ΩCCN1013
R 611 RD1/4PU563J
R 612 RD1/4PU563J
R 613 RD1/4PU563J
R 614 RD1/4PU563J
R 615 0.22ΩCCN1013
R 616 0.22ΩCCN1013
R 617 0.22ΩCCN1013
R 618 0.22ΩCCN1013
R 619 0.22ΩCCN1013
R 620 0.22ΩCCN1013
R 621 0.22ΩCCN1013
R 622 0.22ΩCCN1013
R 623 RD1/4PU561J
R 624 RD1/4PU561J
R 625 RD1/4PU331J
R 626 RD1/4PU331J
R 657 RD1/4PU104J
R 658 RD1/4PU472J
R 659 RD1/4PU103J
R 660 RD1/4PU102J
R 661 RD1/4PU472J
R 662 RD1/4PU221J
R 663 RD1/4PU563J
R 664 RD1/4PU473J
R 665 RD1/4PU103J
R 666 RD1/4PU103J
R 667 RD1/4PU222J
R 668 RD1/4PU472J
R 669 RD1/4PU562J
R 671 RD1/4PU221J
R 672 RD1/4PU152J
R 676 RD1/4PU222J
R 678 RD1/4PU472J
R 679 RD1/4PU101J
R 680 RD1/4PU472J
R 681 RD1/4PU122J
R 682 RD1/4PU122J
R 683 RD1/4PU103J
R 684 RD1/4PU223J
R 685 RD1/4PU223J
R 686 RD1/4PU223J
R 851 RD1/4PU471J
R 852 RD1/4PU471J
R 853 RD1/4PU223J
R 854 RD1/4PU223J
R 855 RN1/4PC1002D
R 856 RN1/4PC1002D
R 857 RN1/4PC1002D
R 858 RN1/4PC1002D
R 861 RN1/4PC1002D
R 862 RN1/4PC1002D
R 882 RN1/4PC1002D
R 884 RN1/4PC1002D
R 887 RD1/4PU103J
R 888 RD1/4PU103J
R 889 RD1/4PU103J
R 890 RD1/4PU103J
R 902 RS1/2PMF220J
R 907 RD1/4PU473J
R 910 RD1/4PU153J
R 911 RD1/4PU102J
R 912 RD1/4PU272J
R 913 RD1/4PU472J
R 914 RD1/4PU472J
R 915 RD1/4PU472J
R 916 RD1/4PU332J
R 917 RD1/4PU332J
R 918 RS1/2PMF220J
R 919 RS1/2PMF220J
R 920 RD1/4PU472J
R 921 RD1/4PU472J
R 922 RD1/4PU472J
R 923 RD1/4PU472J
R 924 RS1/2PMF121J
R 925 RS1/2PMF121J
R 926 (EW,ES model) RD1/4PU105J
R 928 RS1/2PMF121J
=====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ -------------------------

16
GM-X952
R 929 RS1/2PMF121J
R 932 RD1/4PU104J
R 933 RS1/2PMF121J
R 934 RS1/2PMF121J
R 935 RD1/4PU202J
R 936 RD1/4PU223J
R 937 RD1/4PU103J
R 938 RD1/4PU272J
R 939 RD1/4PU272J
R 947 RS1/2PMF560J
R 948 RS1/2PMF560J
R 949 RD1/4PU123J
R 950 RD1/4PU101J
R 951 RD1/4PU563J
R 952 RS1/2PMF220J
CAPACITORS
C 551 CEAS100M16
C 552 CEAS100M16
C 553 CCCCH121J100
C 554 CCCCH121J100
C 555 CQMA471J50
C 556 CQMA471J50
C 559 CEAS221M10
C 560 CEAS221M10
C 561 CCPUCH150J50
C 562 CCPUCH150J50
C 563 CCCCH330J100
C 564 CCCCH330J100
C 565 CFTLA223J50
C 566 CFTLA223J50
C 567 CFTLA333J50
C 568 CFTLA333J50
C 569 CQMA102J50
C 570 CQMA102J50
C 571 CCCCH100J100
C 572 CCCCH100J100
C 573 CCCCH100J100
C 574 CCCCH100J100
C 651 220µF/10V CCH1036
C 652 CFTLA103J50
C 653 CEAS100M16
C 654 CEAS100M16
C 655 CFTLA103J50
C 656 CEAS470M16
C 658 CEAS220M16
C 659 CEAS471M16
C 661 CFTLA103J50
C 662 CFTLA103J50
C 671 CEAS101M16
C 851 CKPUYB471K50
C 852 CKPUYB471K50
C 853 CEAS100M16
C 854 CEAS100M16
C 859 CCPUSL470J50
C 860 CCPUSL470J50
C 868 CFTLA223J50
C 869 CCPUSL470J50
C 870 CFTLA223J50
C 871 CCPUSL470J50
C 872 CFTLA274J50
C 873 CFTLA274J50
C 876 CFTLA154J50
C 877 CFTLA154J50
C 902 CEAS221M10
C 903 CEAS2R2M50
C 904 CEAS101M16
C 905 CQMA472J50
C 906 CQMA472J50
C 907 3300µF/16V HCH0005
C 908 2200µF/50V HCH0007
C 909 2200µF/50V HCH0007
C 910 2200µF/50V HCH0007
C 911 2200µF/50V HCH0007
C 912 CEAS470M16
C 913 CEAS470M16
C 914 CQMA102J50
C 915 CQMA102J50
C 916 CFTNA224J50
C 920 CFTLA564J50
C 932 CEAS470M16
C 949 3300µF/16V HCH0005
C 950 CEAS470M16
C 951 CEAS470M16
C 952 CQMA102J50
C 953 CQMA102J50
C 954 CQMA102J50
C 955 CFTLA103J50
C 956 CFTLA103J50
=====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ -------------------------
6. ADJUSTMENT
There is no information to be shown in this chapter.

GM-X952
17
7. GENERAL INFORMATION
7.1 DISASSEMBLY
Case
Fig.1
-Removing the Case and the Panel (Fig.1)
Remove the six screws.
Remove the two screws.
Remove the three screws and then remove
the Case.
Remove the six screws and then remove the
Panel.
Fig.2
Panel
-Removing the Amp Unit (Fig.2)
Remove the twenty screws.
Remove the screw.
Remove the twelve screws and then remove
the Amp Unit.
Amp Unit

18
GM-X952
8. OPERATIONS AND SPECIFICATIONS
8.1 OPERATIONS
-GM-X952/X1R/EW

19
GM-X952
Power Indicator
The power indicator lights when the power is switched on.
BFC (Beat Frequency Control) Switch
If you hear a beat while listening to an MW/LW broadcast with your car stereo, change the BFC switch using a small standard tip screwdriver. (GM-X952/X1R/EW,ES)
LPF (Low-Pass Filter) Select Switch
Set the LPF select switch as follows according to the type of speaker that is connected to the speaker output connector and the car stereo system:
LPF Select Audio frequency range Speaker Remarks Switch to be output Type LPF (left) Very Low Frequency range Subwoofer Connect a subwoofer. OFF (right) Full range Full range
Setting the Unit
Gain Control
If the sound level is too low, even when the volume of the car stereo used along with this power amplifier is turned up, turn gain control on the front of the power amplifier clockwise. If the sound distorts when the volume is turned up, turn the gain control counter-clockwise. • When using with an RCA equipped car
stereo (standard output of 500 mV), set to the NORMAL position. When using with an RCA equipped Pioneer car stereo with max. output of 4 V or more, adjust level to
match the car stereo output level.

20
GM-X952
Connection Diagram
Fuse (30 A)
Grommet Special red battery wire [RD-223] (sold separately)
After making all other connections at the amplifier,
connect the battery wire terminal of the amplifier to
the positive (+) terminal of the battery.
Ground wire (black) [RD-223] (sold separately)
Connect to metal body or chassis.
Fuse (25 A) ×2
Car stereo with
RCA output jacks
External Output
Connecting wires with RCA pin
plugs (sold separately).
RCA input jack
System remote control wire (sold separately)
Connect the male terminal of this wire to the system remote control
terminal of the car stereo (SYSTEM REMOTE CONTROL). The
female terminal can be connected to the auto-antenna relay control
terminal. If the car stereo does not have a system remote control
terminal, connect the male terminal to the power terminal through the
ignition switch.
Speaker terminal
Fuse (30 A)
Front side
Back side