Pioneer Car Amplifier GM X372 User Manual

Service  
Manual  
BRIDGED  
ORDER NO.  
BRIDGEABLE  
2-CH POWER AMPLIFIER  
CRT3006  
GM-X372/XH/UC  
BRIDGEABLE POWER AMPLIFIER  
GM-X372  
XH/UC,XH/EW,XH/ES  
For details, refer to "Important symbols for good services".  
PONER CORPORTION Meguo 1Chme, egku, Toyo 153-854, Ja
PIONEER ELECTRONICS (USA) INC. P.O.Box 160, 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 2002  
K-ZZY. NOV. 2002 Printed in Japan  
Download from Www.Somanuals.com. All Manuals Search And Download.  
7
8
5
CONTENTS  
SAFETY INFORMATION ............................................2  
1. SPECIFICATIONS........................................................3  
2. EXPLODED VIEWS AND PARTS LIST.......................4  
2.1 PACKING...............................................................4  
2.2 EXTERIOR.............................................................6  
3. SCHEMATIC DIAGRAM .............................................8  
3.1 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)....8  
4. PCB CONNECTION DIAGRAM ................................14  
4.1 AMP UNIT...........................................................14  
5. ELECTRICAL PARTS LIST ........................................18  
6. ADJUSTMENT..........................................................19  
7. GENERAL INFORMATION .......................................20  
7.1 DIAGNOSIS ........................................................20  
7.1.1 DISASSEMBLY .........................................20  
7.1.2 CONNECTOR FUNCTION DESCRIPTION.......21  
7.2 IC ........................................................................22  
8. OPERATIONS............................................................23  
A
B
C
D
E
F
1. SPECIFICATIONS  
Power source .............................................................................................................. 14.4 V DC (10.8 — 15.1 V allowable)  
Grounding system ............................................................................................................................................ Negative type  
Current consumption  
........................................................................................................ 14.4 A (at continuous power, 4 )  
Backup current ................................................................................................................................................. 3.0 mA or less  
Average current drawn*  
............................................................................................................ 5.0 A (4 for two channels)  
7.5 A (4 for one channel)  
Fuse  
............................................................................................................................................................................ 25 A × 1  
Dimensions  
......................................................................................................................... 255 (W) × 50 (H) × 169 (D) mm  
[10 (W) × 2 (H) × 6-5/8 (D) in]  
Weight  
......................................................................................................... 2.0 kg (4.4 lbs) (Leads for wiring not included)  
Maximum power output  
Continuous power output  
.................................................................................................................... 100 W × 2 / 240 W × 1  
..................... ...................................... 50 W × 2 (at 14.4 V, 4 , 20 — 20,000 Hz, 0.15% THD)  
120 W × 1 (at 14.4 V, 4 , 20 — 20,000 Hz, 0.8% THD)  
60 W × 2 (at 14.4 V, 2 , 20 — 20,000 Hz, 0.8% THD)  
Load impedance ............................................................................................................................ 4 (2 — 8 allowable)  
(Bridge connection: 4 — 8 allowable)  
Frequency response ............................................................................................................ 10 — 50,000 Hz (+0 dB, –1 dB)  
............................................................................................................................................. 0.008% (10 W, 1 kHz)  
......................................................................................................................................................... 60 dB (1 kHz)  
Distortion  
Separation  
Low pass filter ................................................................................................................................ Cut off frequency: 80 Hz  
Cut off slope: –12 dB/oct  
Maximum input level/impedance .................................................................................... RCA: 6.5 V/22 kΩ (0.2 — 6.5 V)  
Speaker: 26 V/40 kΩ (0.8 — 26 V)  
Note:  
Specifications and the design are subject to possible modification without notice  
due to improvements.  
*Average current drawn  
The average current drawn is nearly the maximum current drawn by this unit  
when an audio signal is input. Use this value when working out total current  
drawn by multiple power amplifiers.  
3
GM-X372/XH/UC  
5
7
8
1
2
3
4
2. EXPLODED VIEWS AND PARTS LIST  
2.1 PACKING  
A
B
C
D
E
F
4
GM-X372/XH/UC  
1
2
7
8
5
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.  
A
B
C
D
E
F
- 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  
Mark No. Description  
Part No.  
1 Cord  
HDE0044  
2 Screw Assy  
3 Screw  
4 Polyethylene Bag  
HEA0058  
BYC40P180FZK  
HEG0011  
5 Cover  
HNS0101  
6 Polyethylene Bag  
7 Carton  
8 Contain Box  
9 Protector  
10 Owner’s Manual(UC)  
HEG0013  
HHG0341  
HHL0341  
HHP0170  
HRD0226  
Owner’s Manual(EW)  
Owner’s Manual(ES)  
11 Owner’s Manual(ES)  
12 Warranty Card  
HRD0227  
HRD0228  
HRD0229  
HRY1157  
*
- Owner's Manual  
Part No.  
Language  
English, French  
English, French, Spanish, German, Italian, Dutch  
English, Spanish  
HRD0226  
HRD0227  
HRD0228  
HRD0229  
Portuguese(B), Arabic  
5
GM-X372/XH/UC  
5
7
8
1
2
3
4
2.2 EXTERIOR  
A
B
C
D
E
F
6
GM-X372/XH/UC  
1
2
7
8
5
- EXTERIOR SECTION PARTS LIST  
Mark No. Description  
Part No.  
1 Screw  
2 Screw  
3 Chassis  
4 Panel  
5 Panel  
BBZ30P060FZK  
BBZ30P110FZK  
HNA0015  
HNB0187  
HNB0191  
A
B
C
D
E
F
6 Case  
7 Spacer  
8 Heat Sink  
9 Amp Unit(UC)  
Amp Unit(EW)  
HNB0196  
HNM0124  
HNR0236  
HWH0201  
HWH0202  
Amp Unit(ES)  
10 Screw  
11 Terminal(CN604)  
12 Fuse(25A)  
HWH0203  
BBZ30P050FZK  
CKF1059  
HEK0025  
HKB0020  
13 Pin Jack(CN801)  
14 Terminal(CN601)  
15 Terminal(CN851)  
16 Terminal(CN852)  
17 Connector(CN803)  
18 Clip  
HKE0048  
HKE0049  
HKE0049  
HKM1077  
HNC0145  
19 •••••  
20 Heat Sink  
21 Screw  
22 Light Pipe Unit  
23 Screw  
HNR0237  
PPZ30P100FZK  
HXA0391  
ISS30P055FUC  
24 Screw  
25 Screw  
PPZ30P100FZK  
HBA0029  
26 FET(Q612,613,614,615) STP55NF06FP  
27 Diode(D611)  
28 Diode(D612)  
FML22R  
FML22S  
29 Holder  
30 Screw  
31 Screw  
32 Cushion  
33 Screw  
HNC0082  
BBZ30P080FMC  
HBA0030  
HNM6623  
BBZ30P060FZK  
7
GM-X372/XH/UC  
5
7
8
1
2
3
4
3. SCHEMATIC DIAGRAM  
3.1 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)  
Large size  
SCH diagram  
A-a  
A-b  
A
B
C
D
E
F
A-a  
A-b  
Guide page  
A-a  
A AMP UNIT  
A-a  
A-b  
Detailed page  
GAIN = 1  
LPF SELECT  
GAIN = -12dB  
LPF SELECT  
EW, ES ONLY  
75µH  
UC ONLY  
UC ONLY  
75µH  
EW, ES ONLY  
8
GM-X372/XH/UC  
A
1
2
7
8
5
A
B
C
D
E
F
A-b  
AMPLIFIER GAIN = 6.8 - 37.0dB  
NOTE :  
Symbol indicates a resistor.  
Decimal points for resistor  
and capacitor fixed values  
are expressed as :  
No differentiation is made between chip resistors and  
discrete resistors.  
Symbol indicates a capacitor.  
No differentiation is made between chip capacitors and  
discrete capacitors.  
2.2 2R2  
0.022 R022  
The > mark found on some component parts indicates  
the importance of the safety factor of the part.  
Therefore, when replacing, be sure to use parts of  
identical designation.  
EW, ES ONLY  
BFC  
***  
R608 R609  
3R3K 3R3K  
5R1K 5R1K  
UC  
EW, ES  
***  
***  
FU602  
EW, ES ONLY  
HEK0025  
>
50µH  
UC ONLY  
9
GM-X372/XH/UC  
A
5
7
8
1
2
3
4
1
2
( A ) 1 0 k  
H C S 0 0 0 3  
( A ) 1 0 k  
H C S 0 0 0 3  
A
B
C
D
E
F
10  
A-a  
GM-X372/XH/UC  
1
2
7
8
5
3
4
A
B
C
D
E
F
11  
A-a  
GM-X372/XH/UC  
5
7
8
1
2
3
4
A
B
C
D
E
F
1
2
( A ) 1 0 k  
H C S 0 0 0 3  
( A ) 1 0 k  
H C S 0 0 0 3  
12  
A-b  
GM-X372/XH/UC  
1
2
7
8
5
A
B
C
D
E
F
R M 4 Z - L F J 4  
3
4
13  
A-b  
GM-X372/XH/UC  
5
7
8
1
2
3
4
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.  
PO  
AMP UNIT  
A
A
B
C
D
E
F
For further information for  
respective destinations, be sure  
to check with the schematic dia-  
gram.  
1
2.Viewpoint of PCB diagrams  
Capacitor  
Connector  
FU602  
SIDE A  
SIDE B  
Chip Part  
P.C.Board  
4
3
L+ R+  
2
L-  
1
R-  
SPEAKER  
INPUT  
14  
GM-X372/XH/UC  
A
1
2
7
8
5
SIDE A  
POWER SUPPLY  
SPEAKER OUTPUT  
BFC  
A
B
C
D
E
F
2
3
2
1
2
1
GAIN  
LPF SELECT  
INPUT  
15  
GM-X372/XH/UC  
A
5
7
8
1
2
3
4
AMP UNIT  
A
A
B
C
D
E
F
1
1
16  
GM-X372/XH/UC  
A
1
2
7
8
5
SIDE B  
A
B
C
D
E
F
1
1
17  
GM-X372/XH/UC  
A
5
7
8
1
2
3
4
5. ELECTRICAL PARTS LIST  
NOTES:  
A
B
C
D
E
F
- 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.....  
=====Circuit Symbol and No.===Part Name  
Part No.  
-------------------------  
=====Circuit Symbol and No.===Part Name  
--- ------ ------------------------------------------  
Part No.  
--- ------  
------------------------------------------  
-------------------------  
S
S
101  
601  
Switch(LPF SELECT)  
Switch(BFC) (EW, ES)  
Volume 10k(A)  
Fuse(25A)  
HSH0004  
HSH-156  
HCS0003  
HEK0025  
AUnit Number : HWH0201 (UC)  
: HWH0202 (EW)  
VR 301  
FU 602  
: HWH0203 (ES)  
Unit Name  
: Amp Unit  
RESISTORS  
MISCELLANEOUS  
R
R
R
R
R
101  
102  
103  
104  
201  
RS1/16S103J  
RS1/16S103J  
RS1/16S103J  
RS1/16S103J  
RS1/16S472J  
IC  
IC  
IC  
IC  
IC  
101  
501  
502  
601  
602  
IC  
IC  
IC  
IC  
IC  
NJM2068D  
TDA7294V  
TDA7294V  
PA2027A  
UPC494C  
R
R
R
R
R
202  
203  
204  
205  
206  
RD1/4PU102J  
RD1/4PU202J  
RD1/4PU223J  
RD1/4PU103J  
RD1/4PU333J  
IC  
IC  
Q
Q
Q
801  
802  
201  
202  
601  
IC  
IC  
NJM2068D  
NJM2068D  
KSR2202  
KSC1623  
KSC1623  
Transistor  
Transistor  
Transistor  
R
R
R
R
R
301  
302  
303  
304  
501  
RS1/16S222J  
RS1/16S222J  
RS1/16S390J  
RS1/16S390J  
RS1/16S223J  
Q
Q
Q
Q
Q
602  
603  
604  
606  
607  
Transistor  
Transistor  
Transistor  
Transistor  
Transistor  
KSA812  
2SB1243  
KSR2202  
2SD1919  
2SD1919  
R
R
R
R
R
502  
503  
504  
505  
506  
RS1/16S223J  
RS1/16S681J  
RS1/16S681J  
RD1/4PU683J  
RD1/4PU683J  
Q
Q
Q
Q
Q
608  
609  
612  
613  
614  
Transistor  
Transistor  
FET  
FET  
FET  
2SB1277  
2SB1277  
STP55NF06FP  
STP55NF06FP  
STP55NF06FP  
R
R
R
R
R
507  
508  
509  
510  
601  
RS1/2PMF100J  
RS1/2PMF100J  
RD1/4PU473J  
RD1/4PU473J  
RD1/4PU102J  
Q
Q
Q
Q
Q
615  
660  
661  
905  
906  
FET  
STP55NF06FP  
2SD1864  
2SB1243  
KSA812  
KSC1623  
Transistor  
Transistor  
Transistor  
Transistor  
R
R
R
R
R
602  
603  
604  
605  
606  
RD1/4PU473J  
RD1/4PU103J  
RD1/4PU103J  
RD1/4PU222J  
RD1/4PU472J  
Q
D
D
D
D
907  
201  
601  
603  
604  
Transistor  
Diode  
KSC1623  
1SS133  
RM4Z-LFJ4  
HZS7L(B2)  
1SS133  
Diode  
Diode  
Diode  
R
R
R
R
R
607  
608  
608  
609  
609  
RD1/4PU472J  
RD1/4PU332J  
RD1/4PU512J  
RD1/4PU332J  
RD1/4PU512J  
D
D
D
D
D
611  
612  
613  
614  
615  
Diode  
Diode  
Diode  
Diode  
Diode  
FML22R  
FML22S  
HZS16L(1)  
HZS16L(1)  
ERA15-02VH  
(UC)  
(EW, ES)  
(UC)  
(EW, ES)  
R
R
R
R
R
610  
611  
612  
613  
614  
RD1/4PU103J  
RD1/4PU472J  
RD1/4PU101J  
RD1/4PU221J  
RD1/4PU152J  
D
D
D
L
616  
909  
911  
601  
602  
Diode  
Diode  
LED  
ERA15-02VH  
1SS133  
L934BR235SRCF  
HTH0005  
Choke Coil 50µH (EW, ES)  
Choke Coil 75µH (EW, ES)  
L
HTH0010  
R
R
R
R
R
616  
619  
620  
621  
622  
RS1/16S101J  
RS1/16S102J  
RS1/16S473J  
RS1/16S102J  
RS1/16S153J  
L
L
L
T
603  
801  
802  
601  
Choke Coil 75µH (EW, ES)  
Ferri-Inductor  
Ferri-Inductor  
HTH0010  
CTF1007  
CTF1007  
HTT0015  
HCX0001  
Transformer  
Thermistor  
TH 603  
18  
GM-X372/XH/UC  
1
2
7
8
5
=====Circuit Symbol and No.===Part Name  
Part No.  
-------------------------  
=====Circuit Symbol and No.===Part Name  
Part No.  
-------------------------  
--- ------  
------------------------------------------  
--- ------  
------------------------------------------  
R
623  
625  
626  
627  
628  
(EW, ES)  
RD1/4PU105J  
RD1/4PU332J  
RD1/4PU332J  
RS1/16S472J  
RS1/16S472J  
C
C
C
C
C
505  
506  
507  
508  
509  
CEAT220M50  
CEAT220M50  
CFTNA104J50  
CFTNA104J50  
CFTNA104J50  
R
R
R
R
A
B
C
D
E
F
R
R
R
R
R
631  
632  
635  
636  
637  
RD1/4PU272J  
RS1/16S472J  
RS1/2PMF121J  
RS1/2PMF121J  
RS1/2PMF121J  
C
C
C
C
C
510  
537  
538  
539  
540  
CFTNA104J50  
CFTNA333J50  
CFTNA333J50  
CQMA102J50  
CQMA102J50  
R
R
R
R
R
638  
641  
642  
643  
645  
RS1/2PMF121J  
RD1/4PU472J  
RD1/4PU472J  
RS1/2PMF220J  
RD1/4PU472J  
C
C
C
C
C
601  
602  
603  
606  
607  
CFTNA103J50  
CFTNA224J50  
CFTNA103J50  
CFTNA103J50  
CEAT100M16  
R
R
R
R
R
646  
647  
648  
649  
650  
RD1/4PU472J  
RS1/2PMF100J  
RS1/2PMF100J  
RS1/2PMF220J  
RD1/4PU104J  
C
C
C
C
C
608  
609  
611  
612  
613  
CEAT100M16  
CEAT470M16  
CEAT220M50  
HCH0013  
470µF/16V  
CFTNA103J50  
R
R
R
R
R
651  
652  
654  
655  
656  
RD1/4PU183J  
RD1/4PU563J  
RD1/4PU223J  
RD1/4PU223J  
RD1/4PU223J  
C
C
C
C
C
614  
615  
616  
617  
618  
CFTNA103J50  
CEAT100M16  
CEAT221M10  
CQMA102J50  
CEAT2R2M50  
R
R
R
R
R
665  
666  
801  
802  
803  
RS1/2PMF220J  
RS1/2PMF220J  
RS1/16S471J  
RS1/16S471J  
RS1/16S223J  
C
C
C
C
C
619  
620  
621  
622  
623  
CEAT101M16  
CQMA472J50  
CQMA472J50  
CQMA103J50  
HCH0005  
3300µF/16V  
3300µF/16V  
R
R
R
R
R
804  
805  
806  
807  
808  
RS1/16S223J  
C
C
C
C
C
624  
628  
631  
632  
633  
HCH0005  
RN1/10SE1002D  
RN1/10SE1002D  
RN1/10SE1002D  
RN1/10SE1002D  
CFTNA564J50  
CEAT470M16  
CEAT470M16  
CEAT221M35  
R
R
R
R
R
811  
812  
813  
814  
831  
RN1/10SE1002D  
RN1/10SE1002D  
RN1/10SE1002D  
RN1/10SE1002D  
RS1/16S184J  
C
C
C
C
C
634  
635  
636  
637  
638  
CEAT221M35  
CEAT470M16  
CEAT470M16  
CFTNA473J50  
CFTNA473J50  
R
R
R
R
R
832  
917  
918  
919  
920  
RS1/16S184J  
RD1/4PU104J  
RD1/4PU472J  
RD1/4PU103J  
RD1/4PU392J  
C
C
C
C
C
644  
651  
652  
670  
801  
CQMA103J50  
HCH0003  
2200µF/35V  
2200µF/35V  
HCH0003  
CQMA103J50  
CCSRCH471J50  
R
R
R
924  
930  
931  
RD1/4PU473J  
RD1/4PU331J  
RD1/4PU331J  
C
C
C
C
C
802  
803  
804  
805  
806  
CCSRCH471J50  
CEAT100M16  
CEAT100M16  
CQMA472J50  
CQMA472J50  
CAPACITORS  
C
C
C
C
C
101  
102  
103  
104  
201  
CFTNA274J50  
CFTNA274J50  
CFTNA154J50  
CFTNA154J50  
CEAT100M16  
C
C
C
C
C
807  
808  
809  
810  
811  
CCSRCH470J50  
CCSRCH470J50  
CCSRCH470J50  
CCSRCH470J50  
CFTNA103J50  
C
C
C
C
C
202  
501  
502  
503  
504  
CEAT100M16  
CEAT220M50  
CEAT220M50  
CEAT101M50  
CEAT101M50  
C
C
C
C
812  
831  
832  
901  
CFTNA103J50  
CEAT100M16  
CEAT100M16  
HCH0012  
220µF/10V  
6. ADJUSTMENT  
There is no information to be shown in this chapter.  
19  
GM-X372/XH/UC  
5
7
8
1
2
3
4
7. GENERAL INFORMATION  
7.1 DIAGNOSIS  
A
B
C
D
E
F
7.1.1 DISASSEMBLY  
- Removing the Case (not shown)  
1. Remove the eight screws and then remove the Case.  
- Removing the Amp Unit (Fig.1)  
Panel  
1
2
3
4
Remove the eight screws.  
1
1
Remove the screw and then  
remove the two Panels.  
1
1
Remove the four screws and then  
remove the two Heat Sinks.  
4
Remove the four screws and then  
remove the Amp Unit.  
4
3
3
3
3
4
4
1
1
2
1
1
Heat Sink  
Panel  
Amp Unit  
Heat Sink  
Fig.1  
20  
GM-X372/XH/UC  
1
2
7
8
5
7.1.2 CONNECTOR FUNCTION DESCRIPTION  
A
B
C
D
E
F
- GM-X372/XH/UC  
6.5V  
0.2V  
BRIDGED  
BRIDGEABLE  
2-CH POWER AMPLIFIER  
25  
21  
GM-X372/XH/UC  
5
7
8
1
2
3
4
7.2 IC  
*TDA7294V  
A
B
C
D
E
F
7
13  
2
3
14  
4
6
10  
9
MUTE  
STBY  
THERMAL  
SHUTDOWN  
S/C  
PROTECTION  
1
8
15  
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15  
IC's marked by * are MOS type.  
Be careful in handling them because they are very  
liable to be damaged by electrostatic induction.  
22  
GM-X372/XH/UC  
1
2
7
8
5
8. OPERATIONS  
A
B
C
D
E
F
23  
GM-X372/XH/UC  
5
7
8
1
2
3
4
Connection Diagram  
A
B
C
D
E
F
Ground wire (black) [RD-223] (sold separately)  
Connect to metal body or chassis.  
Fuse (30 A)  
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.  
Fuse (30 A)  
Grommet  
Connecting wires with RCA  
pin plugs (sold separately).  
Car stereo with  
RCA output jacks  
External Output  
RCA input jack  
Front side  
Speaker input terminal  
Fuse (25 A) × 1  
Back side  
Speaker output terminal  
See the “Connecting the  
Speaker wires” section  
for speaker connection  
instructions.  
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 ter-  
minal, connect the male terminal to the power terminal through the  
ignition switch.  
24  
GM-X372/XH/UC  
1
2

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