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Service Manual
CLASS D MONO AMPLIFIER

ORDER NO.
GM-D500M/XH/EW

CRT2959

GM-D500M GM-D500M
XH/UC, XR/UC

XH/EW, XR/EW

GM-D500M XH/ES, XR/ES

For details, refer to "Important symbols for good services".

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

C PIONEER CORPORATION 2003

K-ZZB. FEB. 2003 Printed in Japan

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SAFETY INFORMATION
UC model
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.

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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

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[ Important symbols for good services ]
In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely. When you find the procedures bearing any of the symbols, be sure to fulfill them:
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1. Product safety
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.

2. Adjustments
To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable. In accordance with the procedures or instructions described in this manual, adjustments should be performed.

3. Cleaning
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For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning, proper cleaning should be performed to restore their performances.

4. Shipping mode and shipping screws
To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or the shipping screws should be installed before shipping out in accordance with this manual, if necessary.

5. Lubricants, glues, and replacement parts
Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed ones should be used.
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GM-D500M/XH/EW

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CONTENTS
1. 2. SAFETY INFORMATION............................................2 SPECIFICATIONS .......................................................3 EXPLODED VIEWS AND PARTS LIST ......................4 2.1 PACKING..............................................................4 2.2 EXTERIOR ............................................................6 SCHEMATIC DIAGRAM.............................................8 3.1 SCHEMATIC DIAGRAM(GUIDE PAGE) ..............8 PCB CONNECTION DIAGRAM................................14 4.1 AMP PCB............................................................14 4.2 CONNECTOR PCB .............................................18 5. ELECTRICAL PARTS LIST........................................19 6. ADJUSTMENT .........................................................22 7. GENERAL INFORMATION.......................................23 7.1 DIAGNOSIS .......................................................23 7.1.1 DISASSEMBLY.........................................23 7.1.2 CONNECTOR FUNCTION DESCRIPTION ......24 7.2 IC ........................................................................25 8. OPERATIONS ...........................................................26

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3. 4.

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1. SPECIFICATIONS
Power source ...................................................................... 14.4 V DC (10.8 -- 15.1 V allowable) Backup current ............................................................................................................3mA or less Grounding system .................................................................................................. Negative type Current consumption ............................................................ 31.0 A (at continuous power, 4 ) Average current drawn* .................................................................. 4.4 A (4 for one channel) ........................................................................................................ 7.3 A (2 for one channel) Fuse .................................................................................................................................... 30 A x 2 Dimensions .................................................................................. 268 (W) x 52 (H) x 250 (D) mm [10-1/2 (W) x 2 (H) x 9-7/8 (D) in.] Weight .............................................................................. 2.9 kg (Leads for wiring not included) Maximum power output ...................................................... 600 W x 1 (4 ) / 1,000 W x 1 (2 ) Continuous power output (EW) ........ 490 W x 1 (4 ) / 630 W x 1 (2 ) (DIN45324, +B=14.4 V) Continuous power output (UC,ES).............. 300 W x 1 (at 14.4 V, 4 , 20 -- 240 Hz, 0.4% THD) .................................................................. 500 W x 1 (at 14.4 V, 2 , 20 -- 240 Hz, 0.8% THD) Load impedance ...................................................................................... 4 (1 -- 8 allowable) Frequency response ........................................................................ 5 -- 240 Hz (+0.5 dB, ­3 dB) Distortion .................................................................................................... 0.03 % (10 W, 120 Hz) Low pass filter ............................................................................ Cut off frequency: 40 -- 240 Hz ............................................................................................................ Cut off slope: ­24 dB/oct Bass level control .................................................................................................... ­22 -- +12 dB Maximum input level/impedance ...................................... RCA: 6.5 V/22 k (125 mV -- 6.5 V)

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*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.
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GM-D500M/XH/EW

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2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING

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GM-D500M/XH/EW

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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. - 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.)

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- PACKING SECTION PARTS LIST
GM-D500M/XH/EW GM-D500M/XR/EW HEA0060 BYC40P180FZK HEG0011 HNS0112 HEG0013 HHG0327 HHL0327 HHP0155 HRD0206 Not used HRY1157 Not used HTX0003 HEG0025 HNV0025 HRP0008 Part No. GM-D500M/XH/UC GM-D500M/XR/UC HEA0060 BYC40P180FZK HEG0011 HNS0112 HEG0013 HHG0327 HHL0327 HHP0155 HRD0205 Not used Not used ARY1048 Not used Not used Not used Not used GM-D500M/XH/ES GM-D500M/XR/ES HEA0060 BYC40P180FZK HEG0011 HNS0112 HEG0013 HHG0327 HHL0327 HHP0155 HRD0207 HRD0208 Not used Not used HTX0003 HEG0025 HNV0025 HRP0008

Mark No. 1 2 3 4 5 6 7 8 9-1 9-2 * * * * * 9-3 9-4 10 11 12

Description Screw Assy Screw Polyethylene Bag Cover Polyethylene Bag Carton Contain Box Protector Owner's Manual Owner's Manual Warranty Card Card Core Polyethylene Bag Lock Tie

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13 Caution Card

- Owner's Manual
Part No. HRD0205 HRD0206 HRD0207 HRD0208 Language English, French English, Spanish, German, French, Italian, Dutch English, Spanish Arabic, Portuguese

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GM-D500M/XH/EW

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2.2 EXTERIOR
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GM-D500M/XH/EW

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- EXTERIOR SECTION PARTS LIST
Mark No. Description 1 2 3 4 5 6 7 8 9 10 Screw Screw ····· ····· Screw Case Lighting Conductor Lighting Conductor Lighting Conductor Lighting Conductor Part No. BBZ30P060FMC PPZ30P120FZK VBZ30P110FZK HNB0178 HNC0128 HNC0129 HNC0130 HNC0139 HNM0090 HNR0212 HWH0187 HWH0186 HWH0188 HNV0046 BBZ30P050FZK BBZ30P060SAD BBZ30P080FMC BBZ30P100SAD CKF1059 CKF1059 CKF1059 CNM6825 HEK0030 HKB0017 HKE0044 HKE0045 HNC0054 HNC0082 HNM0093 HNR0124 HNR0201 HNR0202 PBB30P140FMC PPZ30P120FZK HXA0380 HXA0381 HXA0383 2SD2395 2SB1566 CCX1013 FML22R FML22S STP50NE08 STP12PF06 STP16NF06 HCS0002 CSS1265 HNM0006 HNM0126 DB3804X BBZ30P080FMC

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11 Insulator 12 Heat Sink 13 Amp Unit (EW) Amp Unit (UC) Amp Unit (ES) 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 Holder Screw Screw Screw Screw Terminal(CN604) Terminal(CN605) Terminal(CN606) Cushion Fuse(30A) Pin Jack(CN801) Terminal(CN601) Terminal(CN804) Clip Holder Insulator ····· Bar Heat Sink Heat Sink Screw Screw Badge Unit Plate Unit Light Pipe Unit Transistor(Q622) Transistor(Q623) Thermistor(TH601,602) Diode(D610) Diode(D611) FET(Q610-615) FET(Q401,402,405,406) FET(Q403,404,407,408) Volume(VR101) Variable Resistor(VR201) Cushion Insulator LED(D910) Screw

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*

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3. SCHEMATIC DIAGRAM
3.1 SCHEMATIC 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-b

Large size SCH diagram

A-a
A
AMP PCB

A-a

A-b

Guide page

A-a

A-b

Detailed page

B

CROSS OVER

C

MUTE

D

EW,
BFC Switch

E

F

A
8 1 2
GM-D500M/XH/EW

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A-b
AMP UNIT Consists of AMP PCB CONNECTOR PCB

B

11µH

1µH

C
42µH

Beads Core

D

W, ES

PROTECTOR

FU601 HEK0030 >

FU602 HEK0030 >

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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. 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.

B
CONNECTOR PCB

F

A B
9 7 8

GM-D500M/XH/EW

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A-b
A

1

2

B

C

D

A-a A-b

E

F

A-a
10 1 2
GM-D500M/XH/EW

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AMP PCB

CROSS OVER

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MUTE

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3
EW, ES

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5

A-b B
A

BFC Switch

B

C

A-a A-b

D

E

F

A-a
GM-D500M/XH/EW

11 7 8

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6

D

C

E

B

A

F

12
A-a A-b

A-b
AMP UNIT Consists of AMP PCB CONNECTOR PCB
1µH 11µH 42µH

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1

1

2

2

GM-D500M/XH/EW

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2

2
Beads Core

3
5
PROTECTOR
FU601

5
HEK0030 >
FU602

HEK0030 >

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GM-D500M/XH/EW Decimal points for resistor and capacitor fixed values are expressed as : 2.2 2R2 0.022 R022
A-a A-b

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NOTE : 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.

B
CONNECTOR PCB

5
E

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-b B
D

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8

13

B

A

C

F

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4. PCB CONNECTION DIAGRAM
A

4.1 AMP PCB
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 PCB

Connector

Capacitor

B

SIDE A

P.C.Board

Chip Part

SIDE B

C

D

E

F

A
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GM-D500M/XH/EW

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A

SIDE A

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2

B
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2

B
CN704

C

3

B
CN702
1

B
CN703
D

FRONT

E

F

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GM-D500M/XH/EW

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A

AMP PCB

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B

C

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D

E

F

A
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A

SIDE B

B

C

D

E

F

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GM-D500M/XH/EW

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A

4.2 CONNECTOR PCB

B

CONNECTOR PCB

SIDE A

B

CONNECTOR PCB

SIDE B

A
B

A A

C

D

E

F

B
18 1 2
GM-D500M/XH/EW

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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 D D 907 908 909 201 601 602 603 606 607 608 609 610 611 612 613 614 615 616 617 901 910 401 402 403 601 801 802 601 601 602 603 604 601 101 201 601 601 602 Transistor Transistor Transistor Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode LED Choke Coil 11µH Choke Coil 42µH Choke Coil 1µH Coil Ferri-Inductor Ferri-Inductor Transformer Thermistor Thermistor Thermistor Thermistor Switch (BFC)(EW, ES) Volume 20k(E) Variable Resistor 10k(A) Semi-fixed Fuse (30A) Fuse (30A) Beads Core Part No. ------------------------KCS2785 KCS2785 KSA1175 1SS133 RM4Z-LFJ4 HZS7L(B2) 1SS133 1SS133 1SS133 1SS133 1SS133 FML22R FML22S HZS16L(1) HZS16L(1) ERA15-02VH ERA15-02VH 1SS133 1SS133 1SS133 DB3804X HTH0002 HTH0002 HTH0003 HTH0004 CTF1007 CTF1007 HTT0022 CCX1013 CCX1013 HCX0001 HCX0001 HSH-156 HCS0002 CCS1265 RH063MC15R HEK0030 HEK0030 HTF0001

A

B

AMP UNIT Consists of AMP PCB CONNECTOR PCB

A B
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

Unit Number Unit Number Unit Number Unit Name
101 102 201 401 601 602 801 802 201 202 401 402 403 404 405 406 407 408 601 602 603 604 606 607 608 609 610 611 612 613 614 615 618 619 620 621 622 623 905 906 IC IC IC IC IC IC IC IC Transistor Transistor FET FET FET FET FET FET FET FET Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor FET FET FET FET FET FET Transistor Transistor Transistor Transistor Transistor Transistor Transistor Transistor

: : : :

HWH0187 (EW) HWH0186 (UC) HWH0188 (ES) Amp Unit
NJM2068D NJM2068D NJM2068MD TDA7570 PA2027A UPC494C NJM2068D NJM2068D KSA1175 KCS2785 STP12PF06 STP12PF06 STP16NF06 STP16NF06 STP12PF06 STP12PF06 STP16NF06 STP16NF06 KCS2785 KSA1175 2SB1243 KSA1175 2SD1919 2SD1919 2SB1277 2SB1277 STP50NE08 STP50NE08 STP50NE08 STP50NE08 STP50NE08 STP50NE08 KSA1175 KSA1175 KCS2785 KCS2785 2SD2395 2SB1566 KSA1175 KCS2785

D D D D D D D D D D D D D D D D L L L L L L T TH TH TH TH S VR VR VR FU FU

MISCELLANEOUS

C

D

E

RESISTORS
R R R R R R R R R R 101 102 103 104 105 106 107 108 201 202 RS1/16S432J RS1/16S432J RS1/16S432J RS1/16S432J RS1/16S432J RS1/16S432J RS1/16S432J RS1/16S432J RS1/16S222J RS1/16S222J

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=====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 203 204 206 207 208 209 210 211 212 213 215 216 217 218 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 433 451 452 453 454 455 456 457 458 459 461 462 466 601 602 603 604 605 606 607

Part No. ------------------------RS1/16S300J RS1/16S300J RS1/16S472J RD1/4PU223J RD1/4PU223J RD1/4PU102J RD1/4PU202J RD1/4PU223J RD1/4PU103J RD1/4PU333J RS1/16S123J RS1/16S123J RS1/16S222J RS1/16S222J RD1/4PU102J RD1/4PU102J RD1/4PU102J RD1/4PU102J RD1/4PU512J RD1/4PU512J RS1/16S474J RS1/16S474J RS1/16S472J RS1/16S472J RS1/16S101J RS1/16S101J RS1/16S752J RS1/16S752J RD1/4PU100J RD1/4PU100J RD1/4PU270J RD1/4PU270J RD1/4PU270J RD1/4PU270J RD1/4PU100J RD1/4PU100J RS1/16S474J RS1/16S474J RS1/16S472J RS1/16S472J RS1/16S101J RS1/16S101J RS1/16S752J RS1/16S752J HCN0006 HCN0002 RS1/16S103J RS1/16S103J RS1/16S103J RS1/16S103J RS1/16S101J HCN0003 HCN0003 HCN0003 HCN0003 RS1/2PMF102J RS1/2PMF102J HCN0006 RD1/4PU102J RD1/4PU473J RD1/4PU103J RD1/4PU103J RD1/4PU222J RD1/4PU472J RD1/4PU472J

=====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 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 625 626 627 628 629 630 631 632 633 634 635 636 637 638 641 642 643 645 646 647 648 649 650 652 654 655 656 657 658 659 660 661 662 663 664 665 666 667 801 802 803 804 805 806 807 808 809 810 811 (EW, ES)

Part No. ------------------------RD1/4PU103J RD1/4PU103J RD1/4PU103J RD1/4PU472J RD1/4PU101J RD1/4PU221J RD1/4PU102J RD1/4PU221J RS1/16S101J RS1/16S103J RS1/16S223J RS1/16S202J RS1/16S473J RS1/16S102J RS1/16S153J RD1/4PU105J RD1/4PU332J RD1/4PU332J RS1/16S472J RS1/16S472J RD1/4PU272J RD1/4PU272J RD1/4PU272J RS1/16S472J RS1/2PMF121J RS1/2PMF121J RS1/2PMF121J RS1/2PMF121J RS1/2PMF121J RS1/2PMF121J RD1/4PU472J RD1/4PU472J RS1/2PMF220J RS1/2PMF100J RS1/2PMF100J RD1/4PU472J RD1/4PU472J RS1/2PMF220J RS1/16S104J RS1/16S912J RD1/4PU123J RD1/4PU223J RD1/4PU223J RS1/16S124J RS1/16S472J RS1/16S472J RS1/16S123J RS1/16S182J RS1/16S223J RS1/16S182J RS1/16S153J RS1/2PMF100J RS1/2PMF100J RS1/16S272J RS1/16S471J RS1/16S471J RS1/16S223J RS1/16S223J RN1/10SE1002D RN1/10SE1002D RN1/10SE1002D RN1/10SE1002D RN1/10SE1002D RN1/10SE1002D RN1/10SE1002D

B

C

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

D

24 6.8

E

0.01 0.01 0.01 0.01

24

F

20 1 2

GM-D500M/XH/EW

3

4

5

6

7

8

=====Circuit Symbol and No.===Part Name --- ----------------------------------------------R R R R R R R R R R R R R 812 905 906 917 918 919 920 921 922 923 924 930 931

Part No. ------------------------RN1/10SE1002D RD1/4PU473J RS1/16S473J RD1/4PU104J RD1/4PU472J RD1/4PU103J RD1/4PU222J RD1/4PU472J RD1/4PU221J RD1/4PU222J RD1/4PU563J RD1/4PU331J RD1/4PU331J

=====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 C 458 459 460 461 462 463 464 465 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 627 631 632 633 634 635 636 637 638 639 640 643 644 651 652 470µF/16V

Part No. ------------------------CEAT100M50 CFTNA104J50 CFTNA104J50 CFTNA224J50 CFTNA104J50 CKSRYB222K50 CKSRYB222K50 CKSRYB222K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CKSRYB331K50 CFTNA474J50 CFTNA103J50 CFTNA224J50 CFTNA103J50 CFTNA103J50 CFTNA103J50 CFTNA103J50 CEAT100M16 CEAT100M16 CEAT101M16 CKCYF103Z50 CEAT220M50 HCH0013 CFTNA104J50 CFTNA104J50 CEAT100M16 CEAT221M10 CQMA102J50 CEAT2R2M50 CEAT470M50 CQMA472J50 CQMA472J50 CQMA102J50 HCH0018 HCH0018 HCH0018 CFTNA154J50 CEAT221M35 CEAT221M35 CEATR10M50 CEATR10M50 CEAT470M50 CEAT470M50 CFTNA103J50 CFTNA103J50 CKSRYB222K50 CKSRYB222K50 CKCYB472K50 CQMA102J50 HCH0006 HCH0006

A

B

CAPACITORS
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 101 102 103 104 105 106 108 109 201 202 203 204 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 421 422 423 424 427 428 429 430 440 441 442 443 451 452 453 454 455 456 457 CFTNA154J50 CFTNA154J50 CFTNA473J50 CFTNA473J50 CFTNA154J50 CFTNA154J50 CFTNA474J50 CFTNA474J50 CEAT100M50 CEAT100M50 CCSRCH150J50 CCSRCH150J50 CEAT100M50 CEAT100M50 CEAT100M50 CEAT100M50 CQMA222J50 CQMA222J50 CQMA332J50 CQMA332J50 CQMA222J50 CQMA222J50 CQMA332J50 CQMA332J50 HCH0017 HCH0019 CEAT100M63 CEAT100M63 CKSRYB183K50 CKSRYB183K50 CQMA471J100 HCH0017 HCH0017 HCH0019 HCH0019 CFTNA104J50 CFTNA104J50 CFTNA474J63 CEANP4R7M63 CFTNA103J50 CFTNA103J63 CKSRYB103K50 CKSRYB103K50 CEAT1R0M50 CEAT1R0M50 CFTNA104J50 CFTNA104J50 CFTNA394J63 CEAT100M63 CEAT100M50

C

4.7µF 1µF

D

4.7µF 4.7µF 1µF 1µF

3900µF/16V 3900µF/16V 3900µF/16V

E

3300µF/16V 3300µF/16V

F

GM-D500M/XH/EW

21 7 8

5

6

1

2

3

4

A

=====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 653 654 655 656 657 658 659 660 661 662 663 664 701 702 703 801 802 803 804 805 806 807 808 809 810 811 901 220µF/10V 3300µF/16V 3300µF/16V 3300µF/16V 3300µF/16V

Part No. ------------------------HCH0006 HCH0006 HCH0006 HCH0006 CFTNA103J50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKSRYB103K50 CKCYB472K50 CKSRYB222K50 CKSRYB222K50 CKSRYB471K50 CKSRYB471K50 CEAT100M16 CEAT100M16 CQMA472J50 CQMA472J50 CCSRCH470J50 CCSRCH470J50 CCSRCH271J50 CCSRCH271J50 CKSRYB222K50 HCH0012

B

C

C C

D

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

F

22 1 2

GM-D500M/XH/EW

3

4

5

6

7

8

7. GENERAL INFORMATION
7.1 DIAGNOSIS 7.1.1 DISASSEMBLY
- Removing the Case (Fig.1)

A

2

Case
2 2

2

1 2

Remove the screw.

Remove the six screws and then remove the Case.

2

B

2

1

Fig.1 - Removing the Amp PCB (Fig.2)
C

1 2

Remove the three screws.

Remove the screw and then remove the Amp PCB.

1

2 1

D

1

Amp PCB
Fig.2

E

F

GM-D500M/XH/EW

23 7 8

5

6

1

2

3

4

A

7.1.2 CONNECTOR FUNCTION DESCRIPTION

B

C

D

E

F

24 1 2

GM-D500M/XH/EW

3

4

5

6

7

8

7.2 IC
TDA7570
33 I-OFCLK 42 +Vs-Low 37 THWext 36 THWint 40 5V DIG

A

34 O0-15

52 -2.5V

49 INR+

46 INL+

38 NTC

50 INR-

45 INL-

51 NC

48 NC

47 NC

44 NC

43 NC

41 NC

39 NC

35 NC

SGND 53 2.5V 54 MUTE 55
REF TERM. OSC

32 DGND 31 CD 30 CDsel2 29 CDsel1
CLIP

B

STBY 56 Feed R in 57 -Vs3 58

28 FEED L in 27 -Vs2

RIGHT CHANNEL SIGNAL PROCESSING

LEFT CHANNEL SIGNAL PROCESSING

C

INTERFACE

INTERFACE

-Vs4 59 -Vs+VRefr 60 SNR1 61 SNR2 62 GNRS 63 GNR 64 1 NC
5
CHANNEL RIGHT LSD + PROTECTIONS CHANNEL RIGHT HSD + PROTECTIONS CHANNEL LEFT HSD + PROTECTIONS CHANNEL LEFT LSD + PROTECTIONS

26 -Vs1 25 -Vs+VRefl 24 SNL1 23 SNL2 22 GNLS 21 GNL 2 NC 3 NC 4 GPR 5 GPRS 6 +Vs-5 7 SPR2 8 SPR1
6 D

9 +Vs-VReff

10 PGND

GM-D500M/XH/EW

11 NC

12 +Vs

13 SPL1

14 SPL2

15 -Vs+5

16 NC

7

17 GPLS

18 GPL

19 NC

20 NC
E F 25 8

1

2

3

4

A

8. OPERATIONS
Bass Level 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 bass level control on the front of the power amplifier clockwise. If the sound distorts when the volume is turned up, turn the bass level 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. · When you want to boost bass, turn the bass level control clockwise.

Power Indicator
The power indicator lights when the power is switched on.

B

C

EW, ES
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.

D

Cut Off Frequency Control
You can select a cut off frequency from 40 to 240 Hz.

E

F

26 1 2

GM-D500M/XH/EW

3

4