Pioneer GM-X944 Bedienungsanleitung

PIONEER 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 EUROPE N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936

C PIONEER CORPORATION 2000 K-ZZA. MAR. 2000 Printed in Japan

ORDER NO.

CRT2483

BRIDGEABLE FOUR-CHANNEL POWER AMPLIFIER

GM-X944 X1R/UC,EW,ES

Service

Manual

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........................................18

6. ADJUSTMENT .........................................................24

7. GENERAL INFORMATION.......................................25

7.1 DISASSEMBLY ..................................................25

8. OPERATIONS AND SPECIFICATIONS ....................26

GM-X944/X1R/UC

GM-X944

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

1. SAFETY INFORMATION

-GM-X944/X1R/UC

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

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

GM-X944

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.

-Owner's Manual

Model Part No. Language

GM-X944/X1R/UC HRD0138 English, French

GM-X944/X1R/EW HRD0139 English, Spanish, German,

French, Italian, Dutch

GM-X944/X1R/ES HRD0140 English, Spanish

HRD0141 Portuguese(B), Arabic

-PACKING SECTION PARTS LIST

Part No.

Mark No. Description GM-X944/X1R/UC GM-X944/X1R/EW GM-X944/X1R/ES

1 •••••

2 Screw BYC40P180FZK BYC40P180FZK BYC40P180FZK

3 Polyethylene Bag HEG0011 HEG0011 HEG0011

4 Polyethylene Bag HEG0021 HEG0021 HEG0021

5 Carton HHG0248 HHG0249 HHG0250

6 Contain Box HHL0248 HHL0249 HHL0250

7 Protector HHP0079 HHP0079 HHP0079

8-1 Owner’s Manual HRD0138 HRD0139 HRD0140

8-2 Owner’s Manual Not used Not used HRD0141

* 8-3 Warranty Card Not used HRY1157 Not used

* 8-4 Card ARY1048 Not used Not used

* 8-5 PRC HRY0012 Not used Not used

9 Cover HNS0101 HNS0101 HNS0101

10 Protector HHP0096 HHP0096 HHP0096

GM-X944

2.2 EXTERIOR

GM-X944

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No. Mark No. Description Part No.

1 Screw BSZ30P050FZK

2 Screw(M3x12) CBA1323

3 Screw(M3x5) HBA0006

4 Screw(M3x8) HBA0011

5 Screw(M2.6x6) HBA0012

6 Screw(M3x16) HBA0020

7 Panel See Contrast table(2)

8 Case See Contrast table(2)

9 Holder HNC0078

10 Heat Sink See Contrast table(2)

11 Plate HNS0077

12 Plate HNS0080

13 Cover HNS0101

14 Spacer HNV0016

15 Amp Unit See Contrast table(2)

16 Screw BBZ30P060FMC

17 Screw(M3x14) CBA1382

18 Terminal(CN905) CKF1059

19 Plug(CN906) CKS1035

20 Connector(CN101) CKS3146

21 Connector(CN103) CKS3146

22 Fuse HEK0030

23 Pin Jack(CN852) HKB0002

24 Pin Jack(CN851) HKB0006

25 Fuse Holder HKE0012

26 Terminal(CN901) HKE0020

27 Connector(CN301) HKE0030

28 Clip HNC0054

29 Holder HNC0076

30 Bar HNR0124

31 Heat Sink HNR0148

32 Heat Sink HNR0149

33 Network Unit See Contrast table(2)

34 Connector(CN102) CKS3145

35 Connector(CN104) CKS3145

36 Clip HNC0054

37 Screw PPZ30P100SAD

38 Light Pipe Unit HXA0322

39 Fan Motor HXM0001

40 Screw PPZ30P100FZK

41 Thermistor(TH901, 902) CCX1013

42 Thermistor(TH904) CCX1027

43 FET 94-4981

(Q361, 362, 363, 364, 365, 366, 367, 368)

44 FET STP50NE08

(Q905, 906, 911, 912, 913, 914)

45 Transistor(Q907) 2SD2395

46 Diode(D910) FML22R

47 Transistor(Q908) 2SB1566

48 Diode(D907) FML22S

49 FET 94-4980

(Q353, 354, 355, 356, 357, 358, 359, 360)

50 Screw BBZ30P140FMC

51 Screw BBZ30P060FMC

(2) CONTRAST TABLE

GM-X944/X1R/UC, EW and ES are constructed the same except for the following:

Part No.

Mark No. Description GM-X944/X1R/UC GM-X944/X1R/EW GM-X944/X1R/ES

7 Panel HNB0121 HNB0104 HNB0121

8 Case HNB0122 HNB0106 HNB0122

10 Heat Sink HNR0160 HNR0165 HNR0160

15 Amp Unit HWH0134 HWH0123 HWH0135

33 Network Unit HWG0020 HWG0016 HWG0021

NETWORK PCB(A)

NETWORK PCB(B)

AMP UNIT

CN851

CN852

CN851

CN101

CN102

CN102-2

CN101-2

CN103

CN104

CN104-2

CN103-2

ISOLATOR

GAIN=1

ISOLATOR

GAIN=1

RCA OUT

GAIN=1

HP/LP FILTER

12dB/OCTAVE

BP FILTER

LOW-X TO HIGH-X

HP/LP FILTER

12dB/OCTAVE

POWER SUPPLY

HIGH XOVER

3k-9kHz

LOW XOVER

40-120Hz

HIGH XOVER

3k-9kHz

LOW XOVER

40-120Hz NETWORK UNIT

Consists of

•NETWORK PCB

FAN MOTOR

HXM0001

GM-X944

1234

A-a A-b

A-a

A-b

A-a

Large size

SCH diagram

Guide page

Detailed page

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 C

CN301

CN903

CN904

CN902

CN901

AMP

GAIN=8.5-33dB

AMP

GAIN=8.5-33dB

CB(A)

CB(B)

GM-X944/X1R/EW, ES

CN906

220

HZS12L(A3)

GM-X944

5678

A-b

GM-X944

1234

NETWORK PCB(A)

AMP UNIT

CN851

CN852

CN851

CN101

CN102

CN102-2

CN101-2

CN103

CN104

CN104-2

CN103-2

ISOLATOR

GAIN=1

ISOLATOR

GAIN=1

RCA OUT

GAIN=1

HP/LP FILTER

12dB/OCTAVE

BP FILTER

LOW-X TO HIGH-X

HIGH XOVER

3k-9kHz

LOW XOVER

40-120Hz NETWORK UNIT

Consists of

•NETWORK PCB(A)

•NETWORK PCB(B)

A-a

A-a A-b

B C

GM-X944

5678

NETWORK PCB(B)

CN852

HP/LP FILTER

12dB/OCTAVE

POWER SUPPLY

HIGH XOVER

3k-9kHz

LOW XOVER

40-120Hz

CN906

FAN MOTOR

HXM0001

A-a

A-a A-b

GM-X944

1234

CN301

AMP

GAIN=8.5-33dB

AMP

GAIN=8.5-33dB

B(A)

B(B)

A-a A-b

A-b

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