Text preview for : GMX-622 2X50W 150W.pdf part of pioneer GMX-622 car amplifier



Back to : GMX-622 2X50W 150W.pdf | Home

GM-X622/X1R/UC

Service Manual
BRIDGEABLE POWER AMPLIFIER

ORDER NO.

CRT2190

GM-X622
GM-X622 GM-X622 GM-X522
X1R/EW X1R/ES X1R/UC

X1R/UC

CONTENTS
1. 2. 3. 4. 5. 6. SAFETY INFORMATION ............................................2 EXPLODED VIEWS AND PARTS LIST .......................2 SCHEMATIC DIAGRAM .............................................6 PCB CONNECTION DIAGRAM ................................12 ELECTRICAL PARTS LIST ........................................14 ADJUSTMENT..........................................................17 7. GENERAL INFORMATION .......................................18 7.1 IC .........................................................................18 7.2 DISASSEMBLY ...................................................19 7.3 BLOCK DIAGRAM ..............................................20 8. OPERATIONS AND SPECIFICATIONS.....................21

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-ZED. FEB.1998 Printed in Japan

GM-X622,GM-X522

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 Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant 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.

2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING

10

3 4

2

8 6 9

9

7
Fig. 1

2

GM-X622,GM-X522

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.

(1) PACKING SECTION PARTS LIST
Mark No. Description * 1 2 3 4 5 Screw Assy Screw Polyethylene Bag Part No. HEA0017 BYC40P180FZK HEG0011 Mark No. Description 6 7 8 9 10-1 Polyethylene Bag Carton Contain Box Protector Owner's Manual Part No. HEG0013
See Contrast table (2) See Contrast table (2)

HHP0025
See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2)

10-2 Owner's Manual * 10-3 Warranty Card * 10-4 Warranty Card * 10-5 Card

(2) CONTRAST TABLE
GM-X622/X1R/EW, GM-X622/X1R/UC, GM-X622/X1R/ES and GM-X522/X1R/UC are constructed the same except for the following: Part No. Mark No. 7 8 10-1 10-2 * 10-3 * * 10-4 10-5 Symbol and Description Carton Contain Box Owner's Manual Owner's Manual Warranty Card Warranty Card Card X1R/EW HHG0153 HHL0153 HRD0044 Not used Not used HRY1087 Not used GM-X622 X1R/UC HHG0149 HHL0149 HRD0041 Not used HRY0005 HRY1070 Not used X1R/ES HHG0152 HHL0152 HRD0043 HRD0070 Not used Not used Not used GM-X522 X1R/UC HHG0150 HHL0150 HRD0042 Not used HRY0005 Not used ARY1048

- Owner's Manual
Model GM-X622/X1R/EW GM-X622/X1R/UC GM-X622/X1R/ES GM-X522/X1R/UC Part No. HRD0044 HRD0041 HRD0043 HRD0070 HRD0042 Language English, French, German, Dutch, Spanish, Italian English, French English, Spanish Arabic, Portuguese(B) English, French

3

GM-X622,GM-X522

2.2 EXTERIOR

Fig. 2

4

GM-X622,GM-X522

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.

(1) EXTERIOR SECTION PARTS LIST
Mark No. Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Screw(M312) Screw(M35) Screw(M38) Case Heat Sink Spacer Amp Unit Screw Screw Cord Assy Connector Fuse(25A) Bass Bar Bass Bar Bass Bar Bass Bar Heat Sink Heat Sink Clamper Pin Jack(CN851) Part No. CBA1323 HBA0006 HBA0011 HNB0027
See Contrast table (2)

Mark No. Description 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 * 39 4046 Pin Jack(CN855) Terminal(CN901) Terminal(CN651) Terminal(CN852) Holder Holder Screw Plate Unit Badge Unit Light Pipe Unit Panel Unit Panel Unit Plate Transistor(Q565,566) Transistor(Q567,568) Transistor(Q569,570) FET(Q905,906,911,912) Thermistor(TH901,902) Panel

Part No.
See Contrast table (2) See Contrast table (2) See Contrast table (2) See Contrast table (2)

HNC0025 HNC0026 PPZ30P060FZK
See Contrast table (2) See Contrast table (2)

HNV3975
See Contrast table (2)

BMS30P060FZK BMS30P080FMC HDE0019 HDE0013 HEK0025 HNC0039 HNC0040 HNC0041 HNC0043 HNR0088 HNR0089 HNV0015
See Contrast table (2)

HXA0201
See Contrast table (2) See Contrast table (2)

HNS0039 2SC1568 2SD2438 2SB1587 IRFIZ44N CCX1013 HNB0035

47 Diode(D907) 48 Diode(D910) 49 Clip

YG902C2 YG902N2
See Contrast table (2)

(2) CONTRAST TABLE
GM-X622/X1R/EW, GM-X622/X1R/UC, GM-X622/X1R/ES and GM-X522/X1R/UC are constructed the same except for the following: Part No. Mark No. 5 7 20 21 22 23 24 28 29 31 32 49 Symbol and Description Heat Sink Amp Unit Pin Jack(CN851) Pin Jack(CN855) Terminal(CN901) Terminal(CN651) Terminal(CN852) Plate Unit Badge Unit Panel Unit Panel Unit Clip X1R/EW HNR0104 HWH0042 HKB0001 HKB0001 HKE0001 HKE0009 HKE0013 HXA0108 HXA0113 HXA0256 HXA0259 Not used GM-X622 X1R/UC HNR0071 HWH0040 HKB0002 HKB0002 HKE0002 HKE0010 HKE0015 HXA0107 HXA0261 HXA0254 HXA0260 HNC0054 X1R/ES HNR0104 HWH0044 HKB0001 HKB0001 HKE0001 HKE0009 HKE0013 HXA0108 HXA0113 HXA0256 HXA0259 Not used GM-X522 X1R/UC HNR0103 HWH0043 HKB0001 HKB0001 HKE0001 HKE0009 HKE0013 HXA0108 HXA0113 HXA0245 HXA0259 Not used

5

1

2

3

4

GM-X622,GM-X522

3. SCHEMATIC DIAGRAM
A

3.1 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)
Note: When ordering service parts, be sure to refer to "EXPLODED VIEWS AND PARTS LIST" or "ELECTRICAL PARTS LIST".

A-a
A-a A-b

Large size SCH diagram

A-a

A-b

Guide page

SPEAKER INPUT

VR101:FREQUENCY

S101:LPF/HPF

B
A-a A-b

Lch INPUT

ISOLATOR

LPF

HPF
3 4 2
20K(E) 20K(E)

1

Detailed page

20K(E)

7
20K(E)

9 8

6

Rch INPUT

C

REGULATOR

RECTIFICATION

DC-AC INVERTER

8

3

6

1

5

2

7

4

D

6

A
1 2 3 4

5

6

7

8

GM-X622,GM-X522

A

A-b

S451:BASS BOOST VR451:BASS BOOST LEVEL VR452:BASS BOOST fc VR453:GAIN

POWER AMP

BASS BOOST

B

C

SWITCHING CONTROL

BFC

THERMO DETECTOR / PROTECTOR OVER VOLTAGE DETECTOR / PROTECTOR MUTE CONTROL REGULATOR CONTROL

D

Fig. 3

A
5 6 7 8

7

B A

D C

8

GM-X622,GM-X522

A-a
A-a A-b
VR101 R117,118 R121,122 GM-X622/X1R/EW Not used 8R2K 8R2K VR452 R459,460 R471,472 GM-X622/X1R/UC CCS1251 Not used Not used GM-X622/X1R/ES Not used 8R2K 8R2K GM-X522/X1R/UC Not used 8R2K 8R2K GM-X622/X1R/EW Not used Not used 33K GM-X622/X1R/UC CCS1242 8R2K Not used GM-X622/X1R/ES Not used Not used 33K GM-X522/X1R/UC Not used Not used 33K
VR101:FREQUENCY S101:LPF/HPF

1
ISOLATOR LPF HPF
3 4 2
20K(E) 20K(E)

1

2
1
20K(E)

2

SPEAKER INPUT

Lch INPUT

VR451:BASS BOOST LEV VR452:BASS BOOST fc VR453:GAIN

BASS BOOST

3
7
20K(E)

3

4
9 8 6

4

Rch INPUT

5
REGULATOR RECTIFICATION DC-AC INVERTER SWITC CONTR
8 3 6 1 5 2 7 4

5

6

6

7

7

GM-X622,GM-X522

A-a

8

8

A-a A-b
A

Fig. 4
B C

9

D

B A

D C

10

GM-X622,GM-X522

A-b
POWER AMP

1

1

A-a A-b

2

2

S451:BASS BOOST

SS BOOST LEVEL SS BOOST fc N

3

3

4

4

5
THERMO DETECTOR / PROTECTOR OVER VOLTAGE DETECTOR / PROTECTOR MUTE CONTROL REGULATOR CONTROL
GM-X622/X1R/ES CSH1021 HSH-156 Not used 1M GM-X522/X1R/UC Not used Not used 0R0 Not used

5

SWITCHING CONTROL

BFC

H

L

6

6

7

7

S451 S901 R463,464 R926

GM-X622/X1R/EW CSH1021 HSH-156 Not used 1M

GM-X622/X1R/UC Not used Not used 0R0 Not used

GM-X622,GM-X522

A-b

8

8

A-a A-b
A B C

Fig. 5

11

D

1

2

3

4

GM-X622,GM-X522

4. PCB CONNECTION DIAGRAM
A

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

A

AMP UNIT

Connector

Capacitor
S101 2 3 4 7 8 9 10

B
P.C.Board Chip Part

5

SIDE B

LPF/HPF

SIDE A

1

6

FREQ

C

C

PRE OUT BASS BOOST

INPUT

D
GAIN

12

A
1 2

3

BASS BOOST LEVEL

BASS BOOST FREQ

4

A B

5
5 4 6 3 7 2 8 1 C BFC L+ SPEAKER INPUT R+ R L L+ SYSTEM CONTROL GND BACKUP FU901

5

6

6

A

7

7

B

R+

R

L

SPEAKER OUTPUT

SIDE A

GM-X622,GM-X522

A

8

8

Fig. 8

13

A

B

D

C

GM-X622,GM-X522

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.....
=====Circuit Symbol and No.===Part Name --- ----------------------------------------------Part No. ------------------------=====Circuit Symbol and No.===Part Name --- ----------------------------------------------Q Q Q Q Q NJM2068D NJM2068D NJM2068D NJM2068D NJM2068D NJM2068D PA2027A NJM2068D NJM2068D NJM2068D UPC494C DTA124ES 2SC2458 2SC2458 2SA992 2SA992 2SA992 2SA992 2SC1845 2SC1845 2SC1845 2SC1845 2SC1845 2SC1845 2SA992 2SA992 2SC1845 2SC1845 2SC1568 2SC1568 2SD2438 2SD2438 2SB1587 2SB1587 2SD1768S 2SD1768S 2SA1048 2SC2458 2SC2458 2SA1048 2SC2458 2SA1048 2SB1243 2SC2458 2SC2458 2SC2458 2SA1048 2SB1277 2SB1277 IRFIZ44N Q Q D D D D D D D D D D D D D D D D D D D D L L L T TH TH TH S S S VR VR VR VR EF EF FU 906 907 908 909 910 911 912 551 552 553 554 555 556 557 558 601 653 654 658 659 661 903 907 908 909 910 911 901 902 903 901 901 902 903 101 451 901 101 451 452 453 901 902 901 FET Transistor Transistor Transistor Transistor FET FET Diode Diode Diode Diode Diode Diode Diode Diode LED Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Choke Coil 50H Choke Coil 100H Choke Coil 100H Transformer Thermistor Thermistor Thermistor Switch(LPF/HPF) Switch(BASS BOOST) Switch(BFC) Volume 20k(E) Volume 10k(C) Volume 50k(C) Volume 10k(A) Fuse 25A Part No. ------------------------IRFIZ44N 2SD2395 2SB1566 2SD1919 2SD1919 IRFIZ44N IRFIZ44N HZS6L(B1) HZS6L(B1) 1SS133 1SS133 1SS133 1SS133 1SS133 1SS133 BR4361F 1SS133 HZS7L(B2) 1SS133 1SS133 1SS133 RM4Z YG902C2 HZS16L(1) HZS16L(1) YG902N2 1SS133 CTH1146 CTH1150 CTH1150 CTT1043 CCX1013 CCX1013 CCX1035 CSH1029
See Contrast table See Contrast table See Contrast table

A
IC IC IC IC IC IC IC IC IC IC IC Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q

Unit Number : HWH0042 Unit Name : Amp Unit

MISCELLANEOUS 101 102 103 104 451 452 651 851 852 853 901 203 204 205 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 653 654 655 657 658 659 660 661 851 852 902 903 904 905 IC IC IC IC IC IC IC IC IC IC IC Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor FET

CCS1240
See Contrast table

CCS1241 CCG-081 CCG-081 HEK0025

RESISTORS R R R R R 101 102 103 104 105 RD1/4PU103J RD1/4PU103J RD1/4PU103J RD1/4PU103J RD1/4PU103J

14

GM-X622,GM-X522

=====Circuit Symbol and No.===Part Name --- ----------------------------------------------R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 203 204 451 452 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578

Part No. ------------------------RD1/4PU103J RD1/4PU472J RD1/4PU472J RD1/4PU562J RD1/4PU562J RD1/4PU103J RD1/4PU103J RD1/4PU123J RD1/4PU123J RD1/4PU103J RD1/4PU103J
See Contrast table See Contrast table

=====Circuit Symbol and No.===Part Name --- ----------------------------------------------R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R 579 580 581 582 583 584 585 586 587 588 595 596 597 598 599 600 601 602 603 604 605 606 657 658 659 660 661 662 663 664 665 666 667 668 669 671 672 676 678 679 680 681 682 683 684 685 686 851 852 853 854 855 856 857 858 859 860 861 862 865 866 867 868 869 870

Part No. ------------------------RD1/4PU222J RD1/4PU222J RD1/4PU181J RD1/4PU181J RD1/4PU100J RD1/4PU100J RD1/4PU100J RD1/4PU100J CCN1082 CCN1082 RD1/4PU563J RD1/4PU563J RD1/4PU564J RD1/4PU564J RD1/4PU473J RD1/4PU473J RS1/2PMF100J RS1/2PMF100J RD1/4PU511J RD1/4PU511J RD1/4PU331J RD1/4PU331J RD1/4PU104J RD1/4PU472J RD1/4PU103J RD1/4PU102J RD1/4PU472J RD1/4PU221J RD1/4PU563J RD1/4PU473J RD1/4PU103J RD1/4PU103J RD1/4PU222J RD1/4PU472J RD1/4PU222J RD1/4PU221J RD1/4PU152J RD1/4PU222J RD1/4PU472J RD1/4PU101J RD1/4PU472J RD1/4PU562J RD1/4PU562J RD1/4PU103J RD1/4PU223J RD1/4PU223J RD1/4PU223J RD1/4PU471J RD1/4PU471J RD1/4PU223J RD1/4PU223J RN1/4PC1002D RN1/4PC1002D RN1/4PC1002D RN1/4PC1002D RN1/4PC1002D RN1/4PC1002D RN1/4PC1002D RN1/4PC1002D RD1/4PU821J RD1/4PU821J RD1/4PU223J RD1/4PU223J RD1/4PU472J RD1/4PU472J

0.1 0.1

RD1/4PU123J RD1/4PU123J
See Contrast table See Contrast table

RD1/4PU222J RD1/4PU222J RD1/4PU472J RD1/4PU472J RD1/4PU182J RD1/4PU182J RD1/4PU182J RD1/4PU182J RD1/4PU331J RD1/4PU331J
See Contrast table See Contrast table See Contrast table See Contrast table See Contrast table See Contrast table

RD1/4PU161J RD1/4PU161J RD1/4PU222J RD1/4PU222J RD1/4PU473J RD1/4PU473J RD1/4PU333J RD1/4PU333J RD1/4PU432J RD1/4PU432J RD1/4PU153J RD1/4PU153J RD1/4PU331J RD1/4PU331J RD1/4PU331J RD1/4PU331J RD1/4PU681J RD1/4PU681J RD1/4PU561J RD1/4PU561J RD1/4PU333J RD1/4PU333J RD1/4PU222J RD1/4PU222J RD1/4PU223J RD1/4PU223J RD1/4PU472J RD1/4PU472J RD1/4PU101J RD1/4PU101J RD1/4PU512J RD1/4PU512J

15

GM-X622,GM-X522

=====Circuit Symbol and No.===Part Name --- ----------------------------------------------R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R 871 872 877 878 879 880 881 882 902 907 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 928 929 930 931 932 935 936 937 938 939 947 948 949 950 951

Part No. ------------------------RD1/4PU472J RD1/4PU222J RD1/4PU472J RD1/4PU472J RD1/4PU563J RD1/4PU563J RD1/4PU104J RD1/4PU104J RS1/2PMF220J RD1/4PU153J RS1/2PMF220J RD1/4PU153J RD1/4PU102J RD1/4PU272J RD1/4PU472J RD1/4PU472J RD1/4PU472J RD1/4PU332J RD1/4PU332J RS1/2PMF220J RS1/2PMF220J RD1/4PU472J RD1/4PU472J RD1/4PU472J RD1/4PU472J RS1/2PMF470J RS1/2PMF470J
See Contrast table

=====Circuit Symbol and No.===Part Name --- ----------------------------------------------C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 651 652 653 654 655 656 658 659 660 661 662 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 902 903 904 905 906 907 908 909 912 913 914 915 916 918 919 920 927 932 3300F/16V 4700F/35V 4700F/35V

Part No. ------------------------CFTLA104J50 CFTLA104J50 CEAS101M10 CEAS101M10 CCPUCH150J50 CCPUCH150J50 CMA330J2H CMA330J2H CFTLA223J50 CFTLA223J50 CFTLA333J50 CFTLA333J50 CQMA102J50 CQMA102J50 CMA100J2H CMA100J2H CMA100J2H CMA100J2H CCH1036 CFTLA103J50 CEAS100M50 CEAS100M50 CFTLA103J50 CEAS101M16 CEAS220M50 CEAS471M16 CFTLA103J50 CFTLA103J50 CFTLA103J50 CKPUYB471K50 CKPUYB471K50 CEAS100M50 CEAS100M50 CFTLA223J50 CFTLA223J50 CCPUSL470J50 CCPUSL470J50 CCPUSL470J50 CCPUSL470J50 CKPUYB471K50 CKPUYB471K50 CEAS4R7M50 CEAS4R7M50 CCPUSL470J50 CEAS100M50 CEAS100M50 CEAS221M10 CEAS2R2M50 CEAS101M16 CQMA472J50 CQMA472J50 CCH1211 CCH1207 CCH1207 CEAS470M16 CEAS470M16 CQMA102J50 CQMA102J50 CFTLA224J50 CEAS471M35 CEAS471M35 CFTLA564J50 CQMA102J50 CEAS470M10

220F/10V

RS1/2PMF470J RS1/2PMF470J RS1/2PMF100J RS1/2PMF100J RD1/4PU104J RD1/4PU392J RD1/4PU223J RD1/4PU103J RD1/4PU272J RD1/4PU272J RS1/2PMF560J RS1/2PMF560J RD1/4PU183J RD1/4PU101J RD1/4PU563J

CAPACITORS C C C C C C C C C C C C C C C C C C C C 101 102 103 104 105 106 451 452 453 454 455 456 457 458 551 552 553 554 555 556 CCPUSL470J50 CCPUSL470J50 CFTLA104J50 CFTLA104J50 CFTLA104J50 CFTLA104J50 CFTLA273J50 CFTLA273J50 CEAS4R7M50 CEAS4R7M50 CFTLA224J50 CFTLA224J50 CFTLA473J50 CFTLA473J50 CEAS100M50 CEAS100M50 CKPUYB221K50 CKPUYB221K50 CQMA471J50 CQMA471J50

16

GM-X622,GM-X522

CONTRAST TABLE of AMP UNIT
GM-X622/X1R/EW, GM-X622/X1R/UC, GM-X622/X1R/ES and GM-X522/X1R/UC are constructed the same except for the following: Part No. Symbol and Description GM-X622/X1R/EW GM-X622/X1R/UC GM-X622/X1R/ES GM-X522/X1R/UC VR101 Not used CCS1251 Not used Not used VR452 Not used CCS1242 Not used Not used S451 CSH1021 Not used CSH1021 Not used S901 HSH-156 Not used HSH-156 Not used R117,118 RD1/4PU822J Not used RD1/4PU822J RD1/4PU822J R121,122 R463,464 R459,460 R471,472 R926 RD1/4PU822J Not used Not used RD1/4PU333J RD1/4PU105J Not used RD1/4PU0R0J RD1/4PU822J Not used Not used RD1/4PU822J Not used Not used RD1/4PU333J RD1/4PU105J RD1/4PU822J RD1/4PU0R0J Not used RD1/4PU333J Not used

6. ADJUSTMENT
There is no information to be shown in this chapter.

17

GM-X622,GM-X522

7. GENERAL INFORMATION
7.1 IC
PA2027A

VCC

1
Transient voltage detector

zz+

16 IN1

-

2V

Stby

2
Bandgap

zz+

15 IN2

-

2V

DET1

3 - zz +

Circuit motion:on

zz+

14 IN3

-

2V

DET2

4
50mA

13 Cont_V

DET_R

5

4.7k

12 Filter
Bandgap:on Switch:on

GND

6

zz +

-

+ zz 2V

11 Vs_out

2V

NC

7
0.13V 20mA

10 TC

NC

8

+ -

5.6V S R

+ Q Oneshot (1msec)

+ -

9

Mute_out

2V

18

GM-X622,GM-X522

7.2 DISASSEMBLY
Panel Unit
A A A A B B B B B A A A A

- Removing the Case and the Panel Units
1. Remove eight screws A and nine screws B. 2. Remove Case and Panel Units.

B

B B B Case Panel Unit Fig.7

C C C C Amp Unit C C

- Removing the the Amp Unit
Some silicone glue has been applied between the Heat Sink and the Sub Heat Sink. therefore, to remove the Amp Unit from the Heat Sink. 1. Remove ten screws C. 4. Use 2 pcs. of screw C and insert them into the two holes marked with an arrow. 5. Alternately tighten them little by little until the Sub Heat Sink(Sub) separates from the Heat Sink.

Heat Sink(Sub)
C C C C

Heat Sink(Sub) Heat Sink
Fig. 8

19

GM-X622,GM-X522

7.3 BLOCK DIAGRAM

BASS BOOST

A

BFC

Fig. 8

20

GM-X622,GM-X522

8. OPERATIONS AND SPECIFICATIONS
8.1 SPECIFICATIONS
Power source .............................................................................................................. 14.4 V DC (10.8 -- 15.1 V allowable) Grounding system ............................................................................................................................................ Negative type Current consumption ........................................................................................................ 15.2 A (at continuous power, 4 W) Average current drawn* ............................................................................................................ 4.6 A (4 W for two channels) 8.6 A (4 W for one channel) Fuse .................................................................................................................................................................................. 25 A Dimensions .......................................................................................................................... 255 (W) 61 (H) 230 (D) mm [10 (W) 2-3/8 (H) 9 (D) in.] Weight ........................................................................................................ 3.5 kg (7.7 lbs.) (Leads for wiring not included) Maximum power output ........................................................................................................ 100 W 2 / 300 W 1 (EIAJ) Continuous power output .............................................................. 50 W 2 (at 14.4V, 4 W, 20 -- 20,000 Hz, 0.08% THD) 150 W 1 (at 14.4V, 4 W, 20 -- 20,000 Hz, 0.8% THD) 75 W 2 (at 14.4V, 2 W, 20 -- 20,000 Hz, 0.8% THD) Load impedance .............................................................................................................................. 4 W (1 -- 8 W allowable) (Bridge connection: 2 -- 8 W allowable) Frequency response ............................................................................................................ 10 -- 50,000 Hz (+0 dB, 1 dB) Signal-to-noise ratio ...................................................................................................................... 105 dB (IHFA network) Distortion ............................................................................................................................................ 0.005% (10 W, 1 kHz) Separation ........................................................................................................................................................ 70 dB (1 kHz) Low pass filter .................................................................................................................... Cut off frequency: 50 -- 120 Hz Cut off slope: 12 dB/oct High pass filter .................................................................................................................... Cut off frequency: 50 -- 120 Hz Cut off slope: 12 dB/oct Bass boost ...................................................................................................................................... Frequency: 40 -- 120 Hz Gain: 0 -- 12 dB Input level / impedance .................................................................................................................. RCA: 0.4 -- 4.0 V/22 kW Speaker: 1.6 --16 V/78 kW

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.

21

Gain Control
The power indicator lights when the power is switched on.

Power Indicator

GM-X622,GM-X522

8.2 OPERATIONS

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 back of the power amplifier clockwise. If the sound distorts when the volume is turned up, turn the gain control counter-clockwise.

Set the gain control to "NORMAL" when this amplifier is connected to a Pioneer car stereo with RCA output jacks. If the sound level is too low or distorts, adjust the gain control. If you hear much noise when using the speaker input terminals, turn the gain control clockwise. Adjust the gain control to the "MIN" side of "NORMAL" when this amplifier is connected to a Pioneer car stereo (High voltage output type).

Cut Off Frequency Control
If the LPF/HPF select switch is set to LPF or HPF, you can select a cut off frequency from 50 to 120 Hz.

Bass Boost Level Control

LPF (Low-Pass Filter)/HPF (High-Pass Filter) Select Switch
Set the LPF/HPF select switch as follows according to the type of speaker that is connected to the speaker output connector and the car stereo system: LPF/HPF Select Switch
LPF (left) OFF (center) HPF (right)

Bass boost level control can boost the level around the frequency selected by the bass boost frequency control from 0 to 12 dB.

Audio frequency range to be output
* -- 50 to 120 Hz Full range * 50 to 120 Hz --

Speaker Type
Sub-woofer Full range Full range

Remarks
Connect a sub-woofer. Use if you want to cut the very-low-frequency range* because it is not necessary for the speakers you are using. * See the "Cut Off Frequency Control" section.

Bass Boost Frequency Control
You can select a bass boost frequency from 40 to 120 Hz with the bass boost control.
Bass Boost Level Control and Bass Boost Frequency Control can be adjusted only when the LPF/HPF select switch is set to a position other than HPF.