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ORDER NO.

CRT3518
GM-320T/XU/UC

BRIDGEABLE TWO-CHANNEL POWER AMPLIFIER

GM-320T

/XU/UC

For details, refer to "Important Check Points for Good Servicing".

PIONEER CORPORATION

4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) 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

PIONEER CORPORATION 2005
K-ZZA. AUG. 2005 Printed in Japan

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SAFETY INFORMATION
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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
B

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

- Service Precaution
You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and should keep the safety during servicing by following the safety instructions described in this manual.

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[Important Check Points for Good Servicing]
In this manual, procedures that must be performed during repairs are marked with the below symbol. Please be sure to confirm and follow these procedures.

1. Product safety
Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by following the safety instructions described in this manual. 1 Use specified parts for repair. Use genuine parts. Be sure to use important parts for safety. 2 Do not perform modifications without proper instructions. Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as radio/TV interference and foreign noise. 3 Make sure the soldering of repaired locations is properly performed. When you solder while repairing, please be sure that there are no cold solder and other debris. Soldering should be finished with the proper quantity. (Refer to the example) 4 Make sure the screws are tightly fastened. Please be sure that all screws are fastened, and that there are no loose screws. 5 Make sure each connectors are correctly inserted. Please be sure that all connectors are inserted, and that there are no imperfect insertion. 6 Make sure the wiring cables are set to their original state. Please replace the wiring and cables to the original state after repairs. In addition, be sure that there are no pinched wires, etc. 7 Make sure screws and soldering scraps do not remain inside the product. Please check that neither solder debris nor screws remain inside the product. 8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord. Damaged power cords may lead to fire accidents, so please be sure that there are no damages. If you find a damaged power cord, please exchange it with a suitable one. 9 There should be no spark traces or similar marks on the power plug. When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure connections and suitable usage. Please exchange the power cord if necessary. 0 Safe environment should be secured during servicing. When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries. Please pay attention to your surroundings and repair safely.

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2. Adjustments
To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification. Adjustments should be performed in accordance with the procedures/instructions described in this manual.

3. Lubricants, Glues, and Replacement parts
Use grease and adhesives that are equal to the specified substance. Make sure the proper amount is applied.
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4. Cleaning
For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper cleaning should be performed to restore their performances.

5. Shipping mode and Shipping screws
To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be installed before shipment. Please be sure to follow this method especially if it is specified in this manual.

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CONTENTS
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SAFETY INFORMATION ..................................................................................................................................... 2 1. SPECIFICATIONS ............................................................................................................................................ 5 2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 6 2.1 PACKING ................................................................................................................................................... 6 2.2 EXTERIOR................................................................................................................................................. 8 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .......................................................................................... 10 3.1 SCHEMATIC DIAGRAM........................................................................................................................... 10 4. PCB CONNECTION DIAGRAM ..................................................................................................................... 12 4.1 AMP UNIT ................................................................................................................................................ 12 5. ELECTRICAL PARTS LIST ............................................................................................................................ 16 6. ADJUSTMENT ............................................................................................................................................... 19 7. GENERAL INFORMATION ............................................................................................................................. 20 7.1 DIAGNOSIS ............................................................................................................................................. 20 7.1.1 DISASSEMBLY ..................................................................................................................................... 20 7.1.2 CONNECTOR FUNCTION DESCRIPTION .......................................................................................... 21 8. OPERATIONS ................................................................................................................................................ 22

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1. SPECIFICATIONS
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2. EXPLODED VIEWS AND PARTS LIST
NOTES : · Parts marked by " * " are generally unavailable because they are not in our Master Spare Parts List.
A

· 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. · Screw adjacent to mark on the product are used for disassembly. · 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.)

2.1 PACKING

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PACKING SECTION PARTS LIST
Mark No. Mark No. 1 2 3 4 5 6 Description Screw Assy Screw Polyethylene Sheet Cord Assy Protector Polyethylene Bag Part No. CEA5330 BYC40P180FTB CNM4338 CDE7736 CHP3066 CEG1181 7 8 9-1 9-2 * * 9-3 9-4 Description Carton Contain Box Polyethylene Bag Owner's Manual Card Caution Card Part No. CHG5596 CHL5596 CEG1116 CRD4015 ARY1048 CRP1324

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Owner's Manual
Part No.
CRD4015 English, French, Spanish

Language
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2.2 EXTERIOR
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29 28 4 27

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30 3 6 3 11 26

10 1 1 9 9 21 24 12 21 18 21 12 12 25 18 12 24 24 7

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13 16 17 2 22 19 12 12 12 12 2 2 2 2 12 12 23

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EXTERIOR SECTION PARTS LIST
Mark No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Description Screw(M3x8) Screw(M3x12) Screw Badge Case Panel Panel Heat Sink Spacer Lighting Conductor Amp Unit Screw(M3x8) Pin Jack(CN801) Terminal(CN901) Terminal(CN905,906) Socket(CN904) Holder Terminal Sub Heat Sink Sub Heat Sink Screw Screw Terminal(CN903) Screw Fuse(FU101)(25A) Screw Seal Holder Nut Washer Part No. CBA2011 CBA2012 BSZ30P050FTB CAH1946 CNB3200 CNB3203 CNB3207 CNR1830 CNV8256 CNV8692 CWH1290 CBA2011 CKB1068 CKE1055 CKE1057 CKM1463 CND2456 CND2458 CNR1812 CNR1813
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*

>

PPZ30P100FSN PPZ30P100FTB VNF1084 PPZ30P100FTB CEK1329 BMZ40P200FTB CAN3984 CNV8522 NB40FTB WB40FTB

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3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 SCHEMATIC DIAGRAM
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Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or "ELECTRICAL PARTS LIST".

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AMP UNIT
0dB 0dB

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+18.3dBs +18.5dBs (INPUT MAX) +18.3dBs

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NOTE : Symbol indicates a resistor. No differentiation is made between chip resistors and discrete resistors. Symbol indicates a capacitor. No differentiation is made between chip capacitors and discrete capacitors.

A
Decimal points for resistor and capacitor fixed values are expressed as : 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.

+37dB

-13.7dBs

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+23.3dBs

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>
30 H

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4.1 AMP UNIT
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4. PCB CONNECTION DIAGRAM
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

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AMP UNIT
POWER SUP

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Connector

Capacitor

SIDE A
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P.C.Board Chip Part

SIDE B

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SPEAKER LEVEL INPUT

Rch

Lch

RC INP

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SIDE A POWER SUPPLY SPEAKER OUTPUT SPEAKER OUTPUT

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BFC

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Rch

Lch

LPF/OFF RCA INPUT

GAIN

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AMP UNIT

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Lch

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SIDE B

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Rch

Lch

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5. ELECTRICAL PARTS LIST
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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..... · 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. · Meaning of the figures and others in the parentheses in the parts list. Example) IC 301 is on the point (face A, 91 of x-axis, and 111 of y-axis) of the corresponding PC board. IC 301 (A, 91, 111) IC NJM2068V
Circuit Symbol and No. Part No. Circuit Symbol and No.
Q 951 Q 952 (B,120,122) Transistor (B,93,89) Transistor (B,93,98) Transistor (A,31,110) Transistor (A,31,128) Transistor (A,31,42) Transistor (A,31,27) Transistor (B,191,156) Diode (B,184,27) Diode (B,169,154) Diode (B,128,142) Diode (B,108,130) Diode (B,117,63) LED (B,116,112) Diode (B,137,107) Diode (B,141,99) Diode (A,94,22) Diode (A,115,33) Diode (A,51,153) Diode (A,47,153) Diode (B,98,87) Diode (B,99,101) Diode (A,31,85) Diode (A,31,70) Diode (B,49,36) Diode (B,45,21) Diode (A,66,143) Choke Coil 30µH (A,60,112) Transformer (A,200,85) Thermistor (A,78,126) Thermistor (A,126,12) Switch(LPF/OFF) (A,197,176) Switch(BFC)
(A,167,15) Volume 10k(A)(GAIN) (A,65,165) Fuse 25A (B,95,18) Surge Protector (B,104,11) Surge Protector

Part No.
DTA114EU 2SB1188 2SB1188 FKV550N FKV550N 2SD2395 2SB1566 MA111 MA111 MA111 UDZS7R5(B) MA111 FR1112H MA111 1SR154-400 1SR154-400 ERA15-02VH ERA15-02VH ERA15-02VH ERA15-02VH MA111 MA111 FML22S FML22R UDZS16(B) UDZS16(B) CTH1324 CTT1124 CCX1013 CCX1064 CSH1021 HSH-156 CCS1241 CEK1329 CSA30-201N CSA30-201N

A Number : CWH1290 Unit
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Unit Name

: Amp Unit

Q Q Q Q Q D D D D D D D D D D D D D D D D D D D L

953 956 957 960 961 601 602 651 652 653 654 701 702 703 705 706 901 902 954 955 956 957 958 959 901

MISCELLANEOUS
IC 101 IC 501 IC 601 IC 801 IC 802 IC 951 Q 101 Q 102 Q 103 Q 104 Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
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(B,156,16) IC (B,126,28) IC (A,134,111) IC (B,89,32) IC (B,115,39) IC (B,108,97) IC (B,161,108) Transistor (B,163,66) Transistor (B,163,131) Transistor (B,163,43) Transistor (A,202,119) Transistor (A,202,54) Transistor (A,199,111) Transistor (A,199,74) Transistor (A,199,139) Transistor (A,199,46) Transistor (B,190,149) Transistor (B,178,28) Transistor (B,146,19) Transistor (B,159,23) Transistor (B,166,152) (B,168,148) (B,163,148) (B,160,152) (B,147,151) Transistor Transistor Transistor Transistor Transistor

NJM2068MD NJM4558MD PA2027A NJM2068MD NJM2068MD UPC494GS 2SA1163 2SA1163 2SC2713 2SC2713 2SD1509 2SD1509 2SD2439 2SD2439 2SB1588 2SB1588 2SC2713 2SC2713 2SC4081 2SC4081 2SA1576A 2SC4081 2SC4081 2SC4081 2SA1576A 2SC4081 2SA1576A 2SB1243 DTA124EU DTC114TU 2SC4081 DTA114EU DTC114TU

D

105 106 107 108 109 110 601 602 605 606 651 652 653 654 655 656 657 658 659 701

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T 951 TH951 TH953 S 501 S 951 VR101 >FU101 AR701 AR702

(B,134,143) Transistor (B,133,133) Transistor (A,103,115) Transistor (B,141,79) Transistor (B,113,115) Transistor (B,112,120) Transistor (B,132,91) Transistor (B,130,99) Transistor

RESISTORS
R 101 R 102 R 103 (B,145,15) (B,162,27) (B,148,15) RS1/16S222J RS1/16S222J RS1/16S560J

Q 702 Q 703 Q 704

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Circuit Symbol and No.
R 104 R 105 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 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 129 130 131 132 133 134 135 136 137 138 143 144 501 502 503 504 601 602 605 606 609 610 613 614 651 652 653 654 655 656 657 658 659 660 (B,164,27) (B,151,24) (B,156,12) (B,147,24) (B,163,14) (A,170,107) (A,151,54) (A,160,121) (A,150,52) (A,164,104) (A,159,66) (A,171,121) (A,158,52) (B,167,107) (B,165,58) (B,164,124) (B,168,40) (A,164,112) (A,156,63) (A,171,129) (A,155,54) (B,191,114) (B,190,55) (B,191,124) (B,191,49) (B,191,110) (B,192,61) (B,191,128) (B,191,45) (A,188,109) 0.1 (A,188,63) 0.1 (A,188,137) 0.1 (A,188,35) 0.1 (A,172,167) (A,141,153) (B,122,23) (B,128,23) (B,124,23) (B,126,23) (B,195,149) (B,179,32) (B,187,158) (B,181,25) (B,188,153) (B,174,32) (B,145,24) (B,160,29) (B,168,158) (A,151,145) (B,171,156) (A,160,145) (B,157,154) (B,157,151) (A,154,153) (A,114,168) (B,126,143) (B,130,143) (B,132,138) (B,135,138) (B,130,133)
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Part No.
RS1/16S560J RS1/16S331J RS1/16S331J RS1/16S223J RS1/16S223J RD1/4PU153J RD1/4PU153J RD1/4PU153J RD1/4PU153J RD1/4PU561J RD1/4PU561J RD1/4PU561J RD1/4PU561J RS1/16S473J RS1/16S473J RS1/16S473J RS1/16S473J RD1/4PU151J RD1/4PU151J RD1/4PU151J RD1/4PU151J RS1/16S101J RS1/16S101J RS1/16S222J RS1/16S222J RS1/16S473J RS1/16S473J RS1/16S473J RS1/16S473J CCN1155 CCN1155 CCN1155 CCN1155 RD1/4PU100J RD1/4PU100J RS1/16S103J RS1/16S103J RS1/16S103J RS1/16S103J RS1/16S273J RS1/16S273J RS1/16S564J RS1/16S564J RS1/16S473J RS1/16S473J RS1/16S472J RS1/16S472J RS1/16S104J RD1/4PU103J RS1/16S472J RD1/4PU392J RS1/16S472J RS1/16S222J RD1/4PU221J RD1/4PU102J RS1/16S473J RS1/16S103J RS1/16S103J RS1/16S222J RS1/16S472J
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Circuit Symbol and No.
R 664 R 665 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 666 667 668 669 670 671 672 673 674 675 676 677 701 702 703 704 801 802 803 804 805 806 807 808 811 812 813 814 815 816 831 832 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 972 973 976 977 978 979 980 981 (B,138,120) (B,74,157) (B,137,133) (B,138,126) (B,144,152) (B,129,93) (B,124,92) (B,132,80) (A,108,134) (A,112,123) (B,107,120) (A,124,134) (A,118,80) (A,101,76) (B,112,113) (A,36,11) (B,191,118) (B,192,53) (B,82,22) (B,104,31) (B,83,30) (B,112,34) (B,89,36) 10k (B,116,43) 10k (B,95,36) 10k (B,122,43) 10k (B,85,26) 10k (B,118,44) 10k (B,97,32) 10k (B,121,39) 10k (B,100,19) (B,107,31) (A,83,19) (A,86,17) (B,118,119) (B,121,113) (B,116,102) (B,117,94) (B,114,85) (B,107,77) (A,101,86) (A,93,83) (A,101,99) (A,98,94) (B,104,111) (B,101,111) (B,103,111) (B,121,111) (B,120,93) (A,33,102) (A,33,98) (A,39,117) (A,50,129) (A,54,79) (A,52,76) (A,102,70) (A,76,50) (A,33,57) (A,38,31) (A,37,52)
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Part No.
RS1/16S332J RS1/16S332J RS1/16S103J RS1/16S472J RS1/16S473J RS1/16S223J RS1/16S223J RS1/16S223J RD1/4PU472J RD1/4PU101J RS1/16S221J RD1/4PU152J RD1/4PU471J RD1/4PU271J RS1/16S222J RD1/2PM182J RS1/16S152J RS1/16S152J RS1/16S471J RS1/16S471J RS1/16S223J RS1/16S223J CCN1152 CCN1152 CCN1152 CCN1152 CCN1152 CCN1152 CCN1152 CCN1152 RS1/16S0R0J RS1/16S0R0J RD1/4PU683J RD1/4PU683J RS1/16S392J RS1/16S101J RS1/16S473J RS1/16S102J RS1/16S153J RS1/16S105J RD1/4PU101J RD1/4PU332J RD1/4PU101J RD1/4PU332J RS1/16S472J RS1/16S472J RS1/16S472J RS1/16S272J RS1/16S272J RD1/2PM121J RD1/2PM121J RD1/2PM220J RD1/2PM220J RD1/2PM220J RD1/2PM220J RD1/2PM100J RD1/2PM100J RD1/4PU222J RD1/4PU222J RD1/2PM151J
8 A

B

C

D

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F

R 661 R 662 R 663

R 982 R 983 R 987

GM-320T/XU/UC

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Circuit Symbol and No.
R 988 (A,41,31)

Part No.
RD1/2PM151J 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

Circuit Symbol and No.
808 809 810 811 812 831 832 901 951 952 953 954 955 956 958 959 960 961 962 963 968 969 970 971 972 (B,120,44) (B,95,32) (B,123,39) (B,102,35) (B,110,43) (A,61,27) (A,61,21) (A,87,161) (A,122,116) (A,121,98) (B,115,93) (B,115,90) (A,106,89) (A,39,155) 3900µF/16V (A,36,120) (A,46,140) (A,62,69) (A,57,66) (A,65,84) 3600µF/35V (A,52,58) 3600µF/35V (A,73,39) (A,60,39) (A,46,40) (A,46,17) (B,47,31) (B,42,26) (A,46,33) (A,44,24)

Part No.
CCSRCH101J50 CCSRCH101J50 CCSRCH101J50 CKSRYB103K50 CKSRYB103K50 CEAT100M50 CEAT100M50 CFTNA224J50 CEANP100M16 CEAT221M16 CKSRYB102K50 CKSRYB103K50 CEAT101M16 CCH1644(P35) CQMA472J50 CQMA472J50 CQMA102J50 CQMA102J50 CCH1673(P35) CCH1673(P35) CEAT331M35 CEAT331M35 CEAT100M50 CEAT100M50 CKSRYB473K50 CKSRYB473K50 CEAT470M16 CEAT470M16

CAPACITORS
A

C C C C C C C C C C
B

101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 501 502 503 504 651 652 653 654 655 656 657 658 659 660 661 662 701 702 703 704 801 802 803 804 805 806 807

(A,151,29) (A,151,10) (B,149,24) (B,163,12) (B,168,113) (B,165,62) (B,166,107) (B,164,58) (B,162,124) (B,166,40) (B,163,127) (B,168,43) (A,164,116) (A,146,53) (A,167,129) (A,160,56) (A,188,121) (A,187,51) (B,193,110) (B,197,81) (B,194,143) (B,193,45) (A,158,164) (A,152,155) (A,158,168) (A,147,159) (B,195,108) (B,195,81) (B,192,144) (B,194,43) (A,119,22) (A,132,24) (B,131,33) (B,136,33) (A,158,157) (A,123,148) (B,124,143) (B,138,128) (A,138,112) (A,138,123) (A,136,103) (B,125,99) (A,122,126) (A,106,125) (B,126,92) (B,136,74) (A,132,95) (B,145,102) (B,150,17) (B,160,21) (B,82,24) (B,110,32) (A,80,27) (A,108,34) (B,54,14) (B,56,14) (B,87,26)

CEAT101M10 CEAT101M10 CCSRCH680J50 CCSRCH680J50 CCSRCH220J50 CCSRCH220J50 CCSRCH330J50 CCSRCH330J50 CCSRCH330J50 CCSRCH330J50 CCSRCH220J50 CCSRCH220J50 CFTNA224J50 CFTNA224J50 CFTNA224J50 CFTNA224J50 CFTNA223J50 CFTNA223J50 CCSRCH220J50 CCSRCH220J50 CCSRCH220J50 CCSRCH220J50 CFTNA333J50 CFTNA333J50 CQMA102J50 CQMA102J50 CCSRCH220J50 CCSRCH220J50 CCSRCH220J50 CCSRCH220J50 CFTNA274J50 CFTNA274J50 CKSQYB154K50 CKSQYB154K50 CEANP221M10 CFTNA103J50 CKSRYB103K50 CKSRYB103K50 CEAT100M50 CEAT100M50 CEAT470M16 CKSRYB103K50 CEAT220M25 CEAT471M16 CKSRYB103K50 CKSRYB103K50 CEAT220M25 CKSRYB103K50 CCSRCH680J50 CCSRCH680J50 CKSRYB471K50 CKSRYB471K50 CEAT100M50 CEAT100M50 CKSRYB223K50 CKSRYB223K50 CCSRCH101J50

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 973 C 974 C 975

D

E

F

18

GM-320T/XU/UC
1 2 3 4

5

6

7

8

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

B

C

D

E

F

GM-320T/XU/UC
5 6 7 8

19

1

2

3

4

7. GENERAL INFORMATION
7.1 DIAGNOSIS
A

7.1.1 DISASSEMBLY
- Removing the Case (Fig.1)

1

Remove the four screws and then remove the Case.

1

1

B

1

1

Case
C

Fig.1

- Removing the Amp Unit (Fig.2)

1

Remove the six screws and then remove the Amp Unit.

1 1 1

D

1

1

1

Amp Unit
Fig.2

E

F

20

GM-320T/XU/UC
1 2 3 4

5

6

7

8

7.1.2 CONNECTOR FUNCTION DESCRIPTION

A

B

C

D

E

F

GM-320T/XU/UC
5 6 7 8

21

1

2

3

4

8. OPERATIONS
A

B

C

D

E

F

22

GM-320T/XU/UC
1 2 3 4

5

6

7

8

A

B

C

D

E

F

GM-320T/XU/UC
5 6 7 8

23

1

2

3

4

A

B

C

D

E

F

24

GM-320T/XU/UC
1 2 3 4