Pioneer GM-X622 X1R/UC User manual

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
ORDER NO.
CRT2190
BRIDGEABLE POWER AMPLIFIER
Se r v i c e
M a nu a l
GM-X622 X1R/UC
GM-X622/X1R/UC
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..........................................................17
7. GENERAL INFORMATION .......................................18
7.1 IC .........................................................................18
7.2 DISASSEMBLY ...................................................19
7.3 BLOCK DIAGRAM ..............................................20
8. OPERATIONS AND SPECIFICATIONS.....................21
GM-X622 X1R/EW
GM-X622 X1R/ES
GM-X522 X1R/UC

2
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
3
4
2
10
89
6
7
9
Fig. 1

1 •••••
* 2 Screw Assy HEA0017
3 Screw BYC40P180FZK
4 Polyethylene Bag HEG0011
5 •••••
6 Polyethylene Bag HEG0013
7 Carton See Contrast table (2)
8 Contain Box See Contrast table (2)
9 Protector HHP0025
10-1 Owner's Manual See Contrast table (2)
10-2 Owner's Manual See Contrast table (2)
* 10-3 Warranty Card See Contrast table (2)
* 10-4 Warranty Card See Contrast table (2)
* 10-5 Card See Contrast table (2)
(1) PACKING SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
3
GM-X622,GM-X522
NOTE:
-Parts marked by “*”are generally unavailable because they are not in our Master Spare Parts List.
-Screws adjacent to Ñmark on the product are used for disassembly.
(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.
GM-X622 GM-X522
Mark No. Symbol and Description X1R/EW X1R/UC X1R/ES X1R/UC
7 Carton HHG0153 HHG0149 HHG0152 HHG0150
8 Contain Box HHL0153 HHL0149 HHL0152 HHL0150
10-1 Owner’s Manual HRD0044 HRD0041 HRD0043 HRD0042
10-2 Owner’s Manual Not used Not used HRD0070 Not used
* 10-3 Warranty Card Not used HRY0005 Not used HRY0005
* 10-4 Warranty Card HRY1087 HRY1070 Not used Not used
* 10-5 Card Not used Not used Not used ARY1048
-Owner's Manual
Model Part No. Language
GM-X622/X1R/EW HRD0044 English, French, German, Dutch, Spanish, Italian
GM-X622/X1R/UC HRD0041 English, French
GM-X622/X1R/ES HRD0043 English, Spanish
HRD0070 Arabic, Portuguese(B)
GM-X522/X1R/UC HRD0042 English, French

4
GM-X622,GM-X522
Fig. 2
2.2 EXTERIOR

5
GM-X622,GM-X522
1 Screw(M3´12) CBA1323
2 Screw(M3´5) HBA0006
3 Screw(M3´8) HBA0011
4 Case HNB0027
5 Heat Sink See Contrast table (2)
6 Spacer HNV3975
7 Amp Unit See Contrast table (2)
8 Screw BMS30P060FZK
9 Screw BMS30P080FMC
10 Cord Assy HDE0019
11 Connector HDE0013
12 Fuse(25A) HEK0025
13 Bass Bar HNC0039
14 Bass Bar HNC0040
15 Bass Bar HNC0041
16 Bass Bar HNC0043
17 Heat Sink HNR0088
18 Heat Sink HNR0089
19 Clamper HNV0015
20 Pin Jack(CN851) See Contrast table (2)
21 Pin Jack(CN855) See Contrast table (2)
22 Terminal(CN901) See Contrast table (2)
23 Terminal(CN651) See Contrast table (2)
24 Terminal(CN852) See Contrast table (2)
25 Holder HNC0025
26 Holder HNC0026
27 Screw PPZ30P060FZK
28 Plate Unit See Contrast table (2)
29 Badge Unit See Contrast table (2)
30 Light Pipe Unit HXA0201
31 Panel Unit See Contrast table (2)
32 Panel Unit See Contrast table (2)
33 Plate HNS0039
34 Transistor(Q565,566) 2SC1568
35 Transistor(Q567,568) 2SD2438
36 Transistor(Q569,570) 2SB1587
37 FET(Q905,906,911,912) IRFIZ44N
38 Thermistor(TH901,902) CCX1013
* 39 Panel HNB0035
40–46 •••••
47 Diode(D907) YG902C2
48 Diode(D910) YG902N2
49 Clip See Contrast table (2)
(1) EXTERIOR 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 Ñmark on the product are used for disassembly.
(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.
GM-X622 GM-X522
Mark No. Symbol and Description X1R/EW X1R/UC X1R/ES X1R/UC
5 Heat Sink HNR0104 HNR0071 HNR0104 HNR0103
7 Amp Unit HWH0042 HWH0040 HWH0044 HWH0043
20 Pin Jack(CN851) HKB0001 HKB0002 HKB0001 HKB0001
21 Pin Jack(CN855) HKB0001 HKB0002 HKB0001 HKB0001
22 Terminal(CN901) HKE0001 HKE0002 HKE0001 HKE0001
23 Terminal(CN651) HKE0009 HKE0010 HKE0009 HKE0009
24 Terminal(CN852) HKE0013 HKE0015 HKE0013 HKE0013
28 Plate Unit HXA0108 HXA0107 HXA0108 HXA0108
29 Badge Unit HXA0113 HXA0261 HXA0113 HXA0113
31 Panel Unit HXA0256 HXA0254 HXA0256 HXA0245
32 Panel Unit HXA0259 HXA0260 HXA0259 HXA0259
49 Clip Not used HNC0054 Not used Not used

6
GM-X622,GM-X522
A
1234
B
C
D
1234
3. SCHEMATIC DIAGRAM
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-b
A-aA-a A-bA-b
A-bA-b
A-aA-a
Large size
SCH diagram
Guide page
Detailed page
A
A-a
SPEAKER
INPUT
Lch
INPUT
Rch
INPUT
3
4
2
1
20K(E)
20K(E)
20K(E)
20K(E)
7
9
8
6
3
4
2
1
5
7
6
8
DC-AC INVERTER
REGULATOR RECTIFICATION
VR101:FREQUENCY S101:LPF/HPF
ISOLATOR LPF HPF

7
GM-X622,GM-X522
5678
A
B
C
D
5678
Fig. 3
A-b
A
POWER AMP
BFC
THERMO DETECTOR / PROTECTOR
OVER VOLTAGE DETECTOR / PROTECTOR
MUTE CONTROL
REGULATOR CONTROL
VR451:BASS BOOST LEVEL
VR452:BASS BOOST fc
VR453:GAIN
S451:BASS BOOST
BASS BOOST
SWITCHING
CONTROL

8
GM-X622,GM-X522
A
1234
B
C
D
1234
A-a
A-a A-b
SPEAKER INPUT
Lch INPUT
Rch INPUT
3
4
2
1
20K(E)
20K(E)
20K(E)
20K(E)
7
9
8
6
VR451:BASS BOOST LEV
VR452:BASS BOOST fc
VR101:FREQUENCY
VR453:GAIN
S101:LPF/HPF
ISOLATOR LPF HPF
BASS BOOST
GM-X622/X1R/EW GM-X622/X1R/UC GM-X622/X1R/ES GM-X522/X1R/UC
VR101 Not used CCS1251 Not used Not used R117,118 8R2K Not used 8R2K 8R2K R121,122 8R2K Not used 8R2K 8R2K
GM-X622/X1R/EW GM-X622/X1R/UC GM-X622/X1R/ES GM-X522/X1R/UC
VR452 Not used CCS1242 Not used Not used R459,460 Not used 8R2K Not used Not used R471,472 33K Not used 33K 33K

9
GM-X622,GM-X522
5678
A
B
C
D
5678
A-a
A-a A-b
3
4
2
1
5
7
6
8
DC-AC INVERTER
REGULATOR RECTIFICATION SWITC
CONTR
Fig. 4

10
GM-X622,GM-X522
A
1234
B
C
D
1234
POWER AMP
SS BOOST LEVEL
SS BOOST fc
N
S451:BASS BOOST
A-b
A-a A-b

11
GM-X622,GM-X522
5678
A
B
C
D
5678
BFC
THERMO DETECTOR / PROTECTOR OVER VOLTAGE DETECTOR / PROTECTOR MUTE CONTROL REGULATOR CONTROL
SWITCHING CONTROL H
L
Fig. 5
A-b
A-a A-b
GM-X622/X1R/EW GM-X622/X1R/UC GM-X622/X1R/ES GM-X522/X1R/UC
S451 CSH1021 Not used CSH1021 Not used S901 HSH-156 Not used HSH-156 Not used R463,464 Not used 0R0 Not used 0R0 R926 1M Not used 1M Not used

12
GM-X622,GM-X522
A
1234
B
C
D
1234
4. PCB CONNECTION DIAGRAM
4.1 AMP UNIT
A
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
diagram.
2. Viewpoint of PCB diagrams
1
2
3
4
5
6
7
8
9
10
S101
FREQ
LPF/HPF
INPUTPRE OUT
BASS BOOST FREQ
BASS BOOST LEVEL
GAIN
BASS BOOST
C
A
AMP UNIT

BFC
FU901
BACKUPGND
SYSTEM CONTROL
L+L–R+ R–L+L–R+ R–
SPEAKER INPUTSPEAKER OUTPUT
A
A
B
B
1234
8765
C
13
GM-X622,GM-X522
5678
A
B
C
D
5678
A
SIDE A
Fig. 8

14
GM-X622,GM-X522
Unit Number : HWH0042
Unit Name : Amp Unit
MISCELLANEOUS
IC 101 IC NJM2068D
IC 102 IC NJM2068D
IC 103 IC NJM2068D
IC 104 IC NJM2068D
IC 451 IC NJM2068D
IC 452 IC NJM2068D
IC 651 IC PA2027A
IC 851 IC NJM2068D
IC 852 IC NJM2068D
IC 853 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 2SC1845
Q 556 Transistor 2SC1845
Q 557 Transistor 2SC1845
Q 558 Transistor 2SC1845
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 2SC1568
Q 566 Transistor 2SC1568
Q 567 Transistor 2SD2438
Q 568 Transistor 2SD2438
Q 569 Transistor 2SB1587
Q 570 Transistor 2SB1587
Q 571 Transistor 2SD1768S
Q 572 Transistor 2SD1768S
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 851 Transistor 2SC2458
Q 852 Transistor 2SC2458
Q 902 Transistor 2SA1048
Q 903 Transistor 2SB1277
Q 904 Transistor 2SB1277
Q 905 FET IRFIZ44N
Q 906 FET IRFIZ44N
Q 907 Transistor 2SD2395
Q 908 Transistor 2SB1566
Q 909 Transistor 2SD1919
Q 910 Transistor 2SD1919
Q 911 FET IRFIZ44N
Q 912 FET IRFIZ44N
D 551 Diode HZS6L(B1)
D 552 Diode HZS6L(B1)
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 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 903 Diode RM4Z
D 907 Diode YG902C2
D 908 Diode HZS16L(1)
D 909 Diode HZS16L(1)
D 910 Diode YG902N2
D 911 Diode 1SS133
L 901 Choke Coil 50µH CTH1146
L 902 Choke Coil 100µH CTH1150
L 903 Choke Coil 100µH CTH1150
T 901 Transformer CTT1043
TH 901 Thermistor CCX1013
TH 902 Thermistor CCX1013
TH 903 Thermistor CCX1035
S 101 Switch(LPF/HPF) CSH1029
S 451 Switch(BASS BOOST) See Contrast table
S 901 Switch(BFC) See Contrast table
VR 101 Volume 20k½(E) See Contrast table
VR 451 Volume 10k½(C) CCS1240
VR 452 Volume 50k½(C) See Contrast table
VR 453 Volume 10k½(A) CCS1241
EF 901 CCG-081
EF 902 CCG-081
FU 901 Fuse 25A HEK0025
RESISTORS
R 101 RD1/4PU103J
R 102 RD1/4PU103J
R 103 RD1/4PU103J
R 104 RD1/4PU103J
R 105 RD1/4PU103J
=====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ -------------------------
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.....
A

15
GM-X622,GM-X522
R 106 RD1/4PU103J
R 107 RD1/4PU472J
R 108 RD1/4PU472J
R 109 RD1/4PU562J
R 110 RD1/4PU562J
R 111 RD1/4PU103J
R 112 RD1/4PU103J
R 113 RD1/4PU123J
R 114 RD1/4PU123J
R 115 RD1/4PU103J
R 116 RD1/4PU103J
R 117 See Contrast table
R 118 See Contrast table
R 119 RD1/4PU123J
R 120 RD1/4PU123J
R 121 See Contrast table
R 122 See Contrast table
R 123 RD1/4PU222J
R 124 RD1/4PU222J
R 203 RD1/4PU472J
R 204 RD1/4PU472J
R 451 RD1/4PU182J
R 452 RD1/4PU182J
R 455 RD1/4PU182J
R 456 RD1/4PU182J
R 457 RD1/4PU331J
R 458 RD1/4PU331J
R 459 See Contrast table
R 460 See Contrast table
R 461 See Contrast table
R 462 See Contrast table
R 463 See Contrast table
R 464 See Contrast table
R 465 RD1/4PU161J
R 466 RD1/4PU161J
R 467 RD1/4PU222J
R 468 RD1/4PU222J
R 469 RD1/4PU473J
R 470 RD1/4PU473J
R 471 RD1/4PU333J
R 472 RD1/4PU333J
R 555 RD1/4PU432J
R 556 RD1/4PU432J
R 557 RD1/4PU153J
R 558 RD1/4PU153J
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 RD1/4PU561J
R 566 RD1/4PU561J
R 567 RD1/4PU333J
R 568 RD1/4PU333J
R 569 RD1/4PU222J
R 570 RD1/4PU222J
R 571 RD1/4PU223J
R 572 RD1/4PU223J
R 573 RD1/4PU472J
R 574 RD1/4PU472J
R 575 RD1/4PU101J
R 576 RD1/4PU101J
R 577 RD1/4PU512J
R 578 RD1/4PU512J
R 579 RD1/4PU222J
R 580 RD1/4PU222J
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 0.1½CCN1082
R 588 0.1½CCN1082
R 595 RD1/4PU563J
R 596 RD1/4PU563J
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 RD1/4PU511J
R 604 RD1/4PU511J
R 605 RD1/4PU331J
R 606 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 RD1/4PU222J
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 RD1/4PU562J
R 682 RD1/4PU562J
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 859 RN1/4PC1002D
R 860 RN1/4PC1002D
R 861 RN1/4PC1002D
R 862 RN1/4PC1002D
R 865 RD1/4PU821J
R 866 RD1/4PU821J
R 867 RD1/4PU223J
R 868 RD1/4PU223J
R 869 RD1/4PU472J
R 870 RD1/4PU472J
=====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ -------------------------

16
GM-X622,GM-X522
R 871 RD1/4PU472J
R 872 RD1/4PU222J
R 877 RD1/4PU472J
R 878 RD1/4PU472J
R 879 RD1/4PU563J
R 880 RD1/4PU563J
R 881 RD1/4PU104J
R 882 RD1/4PU104J
R 902 RS1/2PMF220J
R 907 RD1/4PU153J
R 909 RS1/2PMF220J
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 RS1/2PMF470J
R 925 RS1/2PMF470J
R 926 See Contrast table
R 928 RS1/2PMF470J
R 929 RS1/2PMF470J
R 930 RS1/2PMF100J
R 931 RS1/2PMF100J
R 932 RD1/4PU104J
R 935 RD1/4PU392J
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 RD1/4PU183J
R 950 RD1/4PU101J
R 951 RD1/4PU563J
CAPACITORS
C 101 CCPUSL470J50
C 102 CCPUSL470J50
C 103 CFTLA104J50
C 104 CFTLA104J50
C 105 CFTLA104J50
C 106 CFTLA104J50
C 451 CFTLA273J50
C 452 CFTLA273J50
C 453 CEAS4R7M50
C 454 CEAS4R7M50
C 455 CFTLA224J50
C 456 CFTLA224J50
C 457 CFTLA473J50
C 458 CFTLA473J50
C 551 CEAS100M50
C 552 CEAS100M50
C 553 CKPUYB221K50
C 554 CKPUYB221K50
C 555 CQMA471J50
C 556 CQMA471J50
C 557 CFTLA104J50
C 558 CFTLA104J50
C 559 CEAS101M10
C 560 CEAS101M10
C 561 CCPUCH150J50
C 562 CCPUCH150J50
C 563 CMA330J2H
C 564 CMA330J2H
C 565 CFTLA223J50
C 566 CFTLA223J50
C 567 CFTLA333J50
C 568 CFTLA333J50
C 569 CQMA102J50
C 570 CQMA102J50
C 571 CMA100J2H
C 572 CMA100J2H
C 573 CMA100J2H
C 574 CMA100J2H
C 651 220µF/10V CCH1036
C 652 CFTLA103J50
C 653 CEAS100M50
C 654 CEAS100M50
C 655 CFTLA103J50
C 656 CEAS101M16
C 658 CEAS220M50
C 659 CEAS471M16
C 660 CFTLA103J50
C 661 CFTLA103J50
C 662 CFTLA103J50
C 851 CKPUYB471K50
C 852 CKPUYB471K50
C 853 CEAS100M50
C 854 CEAS100M50
C 855 CFTLA223J50
C 856 CFTLA223J50
C 857 CCPUSL470J50
C 858 CCPUSL470J50
C 859 CCPUSL470J50
C 860 CCPUSL470J50
C 861 CKPUYB471K50
C 862 CKPUYB471K50
C 863 CEAS4R7M50
C 864 CEAS4R7M50
C 865 CCPUSL470J50
C 866 CEAS100M50
C 867 CEAS100M50
C 902 CEAS221M10
C 903 CEAS2R2M50
C 904 CEAS101M16
C 905 CQMA472J50
C 906 CQMA472J50
C 907 3300µF/16V CCH1211
C 908 4700µF/35V CCH1207
C 909 4700µF/35V CCH1207
C 912 CEAS470M16
C 913 CEAS470M16
C 914 CQMA102J50
C 915 CQMA102J50
C 916 CFTLA224J50
C 918 CEAS471M35
C 919 CEAS471M35
C 920 CFTLA564J50
C 927 CQMA102J50
C 932 CEAS470M10
=====Circuit Symbol and No.===Part Name Part No.
--- ------ ------------------------------------------ ------------------------- =====Circuit Symbol and No.===Part Name Part No. --- ------ ------------------------------------------ -------------------------

17
GM-X622,GM-X522
6. ADJUSTMENT
There is no information to be shown in this chapter.
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 RD1/4PU822J Not used RD1/4PU822J RD1/4PU822J
R463,464 Not used RD1/4PU0R0J Not used RD1/4PU0R0J
R459,460 Not used RD1/4PU822J Not used Not used
R471,472 RD1/4PU333J Not used RD1/4PU333J RD1/4PU333J
R926 RD1/4PU105J Not used RD1/4PU105J Not used

18
GM-X622,GM-X522
7. GENERAL INFORMATION
7.1 IC
PA2027A
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
VCC
Stby
DET1
DET2
DET_R
GND
NC
NC
IN1
IN2
IN3
Cont_V
Filter
Vs_out
TC
Mute_out
+
-
zz
2V
+
-
zz
2V
+
-
zz
2V
+
-
2V
zz
+
-
2V
20mA
+
-
zz
2V
+
-
zz
50mA
4.7k½
Transient voltage
detector
Bandgap
Circuit motion:on
+
-
5.6V
+
-
QS
R
Oneshot
(1msec)
Bandgap:on
Switch:on
0.13V

19
GM-X622,GM-X522
A
7.2 DISASSEMBLY
-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.
Fig. 8
-Removing the Case and the Panel Units
1. Remove eight screws A and nine screws B.
2. Remove Case and Panel Units.
Fig.7
Case
Panel Unit
Panel Unit
Heat Sink(Sub)
Heat Sink(Sub)
Amp Unit
Heat Sink
A
A
AA
A
A
A
BB
B
BB
BB
B
B
C
C
C
C
C
C
C
C
CC

20
GM-X622,GM-X522
Fig. 8
7.3 BLOCK DIAGRAM
A
BFC
BASS BOOST