PIONEER GM 7200 Service Manual

ORDER NO.

CRT3521

GM-7200M/XU/UC

MONO POWER AMPLIFIER

GM-7200M

GM-7200M
GM-7200M
GM-7200M

/XU/EW

/XU/ES

/XU/CN

/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. OCT. 2005 Printed in Japan

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SAFETY INFORMATION

CAUTION

A

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

This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California

B

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.

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

SAFETY INFORMATION ..................................................................................................................................... 2

1. SPECIFICATIONS ............................................................................................................................................ 5

2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 8

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2.1 PACKING ................................................................................................................................................... 8

2.2 EXTERIOR............................................................................................................................................... 10

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..........................................................................................12

3.1 SCHEMATIC DIAGRAM(GUIDE PAGE) .................................................................................................. 12

3.2 REMOTE CONTROL UNIT(EW).............................................................................................................. 18

4. PCB CONNECTION DIAGRAM ..................................................................................................................... 20

4.1 AMP UNIT................................................................................................................................................ 20

4.2 REMOTE CONTROL UNIT(EW).............................................................................................................. 24

5. ELECTRICAL PARTS LIST ............................................................................................................................ 25

6. ADJUSTMENT ............................................................................................................................................... 32

7. GENERAL INFORMATION............................................................................................................................. 33

7.1 DIAGNOSIS ............................................................................................................................................. 33

7.1.1 DISASSEMBLY ..................................................................................................................................... 33

7.1.2 CONNECTOR FUNCTION DESCRIPTION.......................................................................................... 34

7.2 IC ............................................................................................................................................................. 35

8. OPERATIONS ................................................................................................................................................ 36

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1. SPECIFICATIONS

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B

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7

8

5

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B

C

D

E

F

6

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A

B

C

D

E

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GM-7200M/XU/UC

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7

8

7

N

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2. EXPLODED VIEWS AND PARTS LIST

OTES : • Parts marked by " * " are generally unavailable because they are not in our Master Spare Parts List.

• The > mark found on some component parts indicates the importance of the safety factor of the part.

A

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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"

11

5

3

6

5

4

7

2

13

8

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D

1

8

12

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8

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GM-7200M/XU/UC

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PACKING SECTION PARTS LIST

Mark No. Description GM-7200M/XU/UC GM-7200M/XU/EW GM-7200M/XU/ES GM-7200M/XU/CN

1 Cord Assy CDE7736 CDE7736 CDE7736 CDE7736
2 Cord Assy Not used CDE7804 Not used Not used
3 Screw Assy CEA5330 CEA5328 CEA5330 CEA5330
4 Screw Not used BYC30P100FTB Not used Not used
5 Screw BYC40P180FTB BYC40P180FTB BYC40P180FTB BYC40P180FTB

* 6 Polyethylene Sheet CNM4338 CNM4338 CNM4338 CNM4338

7 Polyethylene Bag CEG1351 CEG1317 CEG1317 CEG1317
8 Protector CHP3066 CHP3066 CHP3066 CHP3066
9 Carton CHG5583 CHG5582 CHG5584 CHG5585
10 Contain Box CHL5583 CHL5582 CHL5584 CHL5585

11-1 Polyethylene Bag CEG1116 CEG1116 CEG1116 CEG1116

11-2 Owner's Manual CRD4006 CRD4005 CRD4007 CRB2105
* 11-3 Warranty Card Not used CRY1157 Not used ARY7046
* 11-4 Card ARY1048 Not used Not used Not used

11-5 Owner's Manual Not used Not used CRD4008 Not used

12 Remote Control Assy Not used CXC4064 Not used Not used
* 13 Polyethylene Bag Not used CEG1171 Not used Not used

Owner's Manual

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Part No. Language

CRD4006 English, French, Spanish

CRD4005 English, Spanish, German, French, Italian, Dutch, Russian

CRD4007 English, Spanish

CRD4008 Arabic, Portuguese(B)

CRB2105 Traditional Chinese

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2.2 EXTERIOR

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B

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4

1

10

14

21

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40

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33

14

2

2

2

31

14

29

31

16

14

24

25

2

23

26

27

17

14

2

11

13

22

28

19

14

14

14

2

2

31

32

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20

D

3

2

3

15

18

30

2

14

14

14

8

11

A

14

11

14

14

21

2

9

43

E

41

42

38

F

10

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36

B

35

37

43

1

GM-7200M/XU/UC

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39

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1

1

1

39

1

>

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(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

1 Screw(M3x8) CBA2011

2 Screw(M3x12) CBA2012

3 Screw BSZ30P050FTB

* 4 Badge CAH1946

5 •••••

6 •••••

7 Case CNB3199

8 Panel See Contrast table(2)

9 Panel CNB3205

10 Heat Sink See Contrast table(2)

11 Spacer CNV8256

12 Lighting Conductor CNV8692

13 Amp Unit See Contrast table(2)

14 Screw(M3x8) CBA2011

15 Pin Jack(CN111) CKB1068

16 Terminal(CN853) CKE1055

17 Terminal(CN855) CKE1057

18 Socket(CN801) CKM1463

19 Connector(CN701) See Contrast table(2)

20 Holder CND2456

21 Terminal CND2458

22 Holder CND2466

Mark No. Description Part No.

23 Buss Bar CND2467

24 Buss Bar CND2468

25 Buss Bar CND2469

26 Buss Bar CND2471

27 Buss Bar CND2472

28 Buss Bar CND2729

29 Sub Heat Sink CNR1808

30 Sub Heat Sink CNR1810

31 Screw PPZ30P100FSN

32 Screw PPZ30P100FTB

33 Terminal(CN850) VNF1084

34 •••••

35 Cover See Contrast table(2)

36 Remote Control Unit See Contrast table(2)

37 Connector(CN1351) See Contrast table(2)

38 Spring See Contrast table(2)

39 Screw PPZ30P100FTB

40 Fuse(FU100, FU101) (30A) CEK1330

41 Grille See Contrast table(2)

42 Knob Unit See Contrast table(2)

43 Screw See Contrast table(2)

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(2) CONTRAST TABLE

GM-7200M/XU/UC, GM-7200M/XU/EW, GM-7200M/XU/ES and GM-7200M/XU/CN are constructed the same
except for the following:

Mark No. Description GM-7200M/XU/UC GM-7200M/XU/EW GM-7200M/XU/ES GM-7200M/XU/CN

8 Panel CNB3229 CNB3201 CNB3229 CNB3229
10 Heat Sink CNR1826 CNR1806 CNR1826 CNR1826
13 Amp Unit CWH1286 CWH1285 CWH1286 CWH1286
19 Connector(CN701) Not used CKS4962 Not used Not used
35 Cover Not used CNS8141 Not used Not used

36 Remote Control Unit Not used CWM9848 Not used Not used
37 Connector(CN1351) Not used CKS4962 Not used Not used
38 Spring Not used CBL1692 Not used Not used
41 Grille Not used CNS8140 Not used Not used
42 Knob Unit Not used CXC4335 Not used Not used

43 Screw Not used BPZ20P100FTB Not used Not used

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7

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11

A-a

A-b

A-a

A-b

A-b

A-a

T

d

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3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 SCHEMATIC DIAGRAM(GUIDE PAGE)

A

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

Large size

A-b

A-b

A-b

SCH diagram

Guide page

Detailed page

CN1351

B

+18.5dBs
(BB ON
INPUT MAX)

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.

0dB

A-a

A-a

A-a

B

C

A-a

0dB

+18.3dBs

+17.5dBs

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

←

2.2 2R2

←

0.022 R022

0dB

LPF

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.

15K

+17.5dBs

-1.7dB ~

-32.0dB

GAIN

0dB or +12dB

or +6dB ( or +9dB)

-15dBs

330

BASS BOOS

-2.6

-0.8dB

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320µH

320µH

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A

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