Pioneer GM-X624 User Manual

ORDER NO.
CRT2202
Se r v i c e
M a nu a l
BRIDGEABLE FOUR-CH CHANNEL POWER AMPLIFIER
PIONEER ELECTRONIC 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 ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE, PTE.LTD. 501 Orchard Road, #10-00, Wheelock Place, Singapore 238880
C PIONEER ELECTRONIC CORPORATION 1998
K-ZEU. APR. 1998 Printed in Japan
GM-X624 X1R/UC, ES, EW
CONTENTS
1. SAFETY INFORMATION ............................................1
2. EXPLODED VIEWS AND PARTS LIST.......................2
3. SCHEMATIC DIAGRAM .............................................6
4. PCB CONNECTION DIAGRAM ................................12
5. ELECTRICAL PARTS LIST ........................................14
6. ADJUSTMENT..........................................................18
7. GENERAL INFORMATION .......................................18
7.1 IC .........................................................................18
7.2 DISASSEMBLY ...................................................19
8. OPERATIONS AND SPECIFICATIONS.....................20
GM-X524 X1R/UC
1. 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.
W
ARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxi-
cant which may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin
contact with the solder. Also, when soldering do not inhale any smoke or fumes produced.
GM-X624/X1R/UC

Pioneer GM-X624 Specifications

General

Channels	2
Frequency Response	10Hz - 50kHz
Impedance	2 - 8 Ohms
Signal to Noise Ratio	100 dB
RMS Power at 4 Ohms	60W x 2
THD at RMS Power	0.05%
Bass Boost	0-12dB
Input Sensitivity	200mV - 4V

Summary

SAFETY INFORMATION

EXPLODED VIEWS AND PARTS LIST

PACKING

Lists components included in the product packaging.

EXTERIOR

Visual breakdown of external components and their identification.

SCHEMATIC DIAGRAM

OVERALL CONNECTION DIAGRAM

Main schematic detailing internal circuit connections for the amplifier.

AMP UNIT SCHEMATIC

Detailed schematic focused on the amplifier unit's circuitry.

PCB CONNECTION DIAGRAM

AMP UNIT PCB LAYOUT

Visual representation of component placement on the amplifier unit's PCB.

ELECTRICAL PARTS LIST

ADJUSTMENT

GENERAL INFORMATION

IC PA2027A DETAILS

Pinout and internal block diagram for the PA2027A IC.

UNIT DISASSEMBLY

Step-by-step instructions for safely taking apart the amplifier unit.

OPERATIONS AND SPECIFICATIONS

SETTING THE UNIT

Guidance on configuring the amplifier's controls and switches for optimal use.

CONNECTION DIAGRAM

Visual guide for connecting power, speaker, and input/output wires.

TECHNICAL SPECIFICATIONS

Detailed technical specifications and performance metrics of the amplifier.