PIONEER GM-X972/XR/EW - Service Manual Immediate Download

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 2002

K-ZZY. NOV. 2002 Printed in Japan

BRIDGEABLE POWER AMPLIFIER

GM-X972

XR/UC,XR/EW,XR/ES

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

ORDER NO.

CRT3008

Service

Manual

BRIDGEABLE

2-CH POWER AMPLIFIER

BRIDGED

30A

GM-X972/XR/UC

234

GM-X972/XR/UC

[ 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:

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

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.

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.

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.

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.

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

SAFETY INFORMATION

- GM-X972/XR/UC

GM-X972/XR/UC

1. SPECIFICATIONS

Power source .............................................................................................................. 14.4 V DC (10.8 -- 15.1 V allowable)

Grounding system ............................................................................................................................................ Negative type

Current consumption ........................................................................................................ 37.5 A (at continuous power, 4

)

Average current drawn* .......................................................................................................... 12.0 A (4

for two channels)

18.5 A (4

for one channel)

Fuse ............................................................................................................................................................................ 30 A

× 2

Dimensions .......................................................................................................................... 269 (W)

× 50 (H) × 309 (D) mm

[10-5/8 (W)

× 2 (H) × 12-1/8 (D) in]

Weight ..................... .................................................................................... 3.7 kg (8.2 lbs) (Leads for wiring not included)

Maximum power output ...................... .............................................................................................. 300 W

× 2 / 800 W × 1

Continuous power output ..................... .................................... 150 W

× 2 (at 14.4 V, 4 , 20 -- 20,000 Hz, 0.08% THD)

400 W

× 1 (at 14.4 V, 4 , 20 -- 20,000 Hz, 0.8% THD)

200 W

× 2 (at 14.4 V, 2 , 20 -- 20,000 Hz, 0.8% THD)

Load impedance ............................................................................................................................ 4

(2 -- 8 allowable)

(Bridge connection: 4 -- 8

allowable)

Frequency response ............................................................................................................ 10 -- 50,000 Hz (+0 dB, 1 dB)

Signal-to-noise ratio ..................... .................................................................................................. 100 dB (IHFA network)

Distortion .............................................................................................................................................. 0.008% (10 W, 1 kHz)

Separation ......................................................................................................................................................... 65 dB (1 kHz)

Low pass filter ................................................................................................................................ Cut off frequency: 80 Hz

Cut off slope: 12 dB/oct

Maximum input level/impedance .................................................................................... RCA: 6.5 V/22 k

(0.2 -- 6.5 V)

Speaker: 26 V/40 k

(0.8 -- 26 V)

Note:

· Specifications and the design are subject to possible modification without notice

due to improvements.

*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.

Backup current ................................................................................................................................................. 3.0 mA or less

CONTENTS

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

1. SPECIFICATIONS........................................................3

2. EXPLODED VIEWS AND PARTS LIST .......................4

2.1 PACKING ...............................................................4

2.2 EXTERIOR .............................................................6

3. SCHEMATIC DIAGRAM .............................................8

3.1 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)....8

4. PCB CONNECTION DIAGRAM ................................14

4.1 AMP UNIT...........................................................14

5. ELECTRICAL PARTS LIST ........................................18

6. ADJUSTMENT..........................................................20

7. GENERAL INFORMATION .......................................21

7.1 DIAGNOSIS ........................................................21

7.1.1 DISASSEMBLY .........................................21

7.1.2 CONNECTOR FUNCTION DESCRIPTION .......22

7.2 IC ........................................................................23

8. OPERATIONS............................................................24

234

GM-X972/XR/UC

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

GM-X972/XR/UC

1 Screw Assy

HEA0058

2 Screw

BYC40P180FZK

3 Polyethylene Bag

HEG0011

4 Cover

HNS0101

5 Polyethylene Bag

HEG0022

6 Carton

HHG0339

7 Contain Box

HHL0339

8 Protector

HHP0168

9 Owner's Manual(UC)

HRD0218

Owner's Manual(EW)

HRD0220

Owner's Manual(ES)

HRD0222

10 Owner's Manual(ES)

HRD0223

11 Warranty Card

HRY1157

12 Cord Assy

HDE0036

- PACKING SECTION PARTS LIST

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

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.)

- Owner's Manual

Part No.

Language

HRD0218

English, French

HRD0220

English, French, Spanish, German, Italian, Dutch

HRD0222

English, Spanish

HRD0223

Portuguese(B), Arabic