Pioneer A-207 MLXJ User Manual

ORDER NO.
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 Lane Crawford Place, Singapore 0923
PIONEER ELECTRONIC CORPORATION 1998
RRV1935
STEREO AMPLIFIER
A-207
1. SAFETY INFORMATION
......................................
2
2. EXPLODED VIEWS AND PARTS LIST
................
3
3. SCHEMATIC DIAGRAM
.......................................
6
4. PCB CONNECTION DIAGRAM
..........................
14
5. PCB PARTS LIST
...............................................
22
6. ADJUSTMENT
....................................................
25
CONTENTS
7. GENERAL INFORMATION
................................
26
7.1 IC
.................................................................
26
7.2 DISASSEMBLY
...........................................
27
7.3 BLOCK DIAGRAM
.......................................
28
8. PANEL FACILITIES AND SPECIFICATIONS
....
29
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
Model
A-207
MLXJ
SDXJ
AC220 – 230V
Power Requirement
The voltage can be converted by the
following method.
–––––––
With the voltage selector
T – ZZE APR. 1998 Printed in Japan
AC110V/120 –127V/220V/240V
PHONES
A SPEAKERS B
POWER
OFF ON
STEREO AMPLIFIER
-
–
z¿<?≥ Direct Energy MOS
TAPE 1
/MD
TAPE 2
MONITOR
LINE
TUNER
PHONO
CD
BASS
+
–
TREBLE
+
–
VOLUME
MIN MAX
LOUDNESS DIRECT
BALANCE
R
L
INPUT SELECTOR
TAPE 2
MONITOR

Pioneer A-207 MLXJ Specifications

General

Brand	Pioneer
Model	A-207 MLXJ
Category	Amplifier
Language	English

Summary

1. SAFETY INFORMATION

1.1 SAFETY PRECAUTIONS

Safety guidelines for service technicians, including leakage current checks.

1.2 PRODUCT SAFETY NOTICE

Important notice about safety-related component characteristics and replacements.

3. SCHEMATIC DIAGRAM

3.1 OVERALL CONNECTION DIAGRAM

Overall connection diagram illustrating inter-assembly wiring.

3.2 VOLUME AND HEADPHONE ASSEMBLIES

3.3 AC PRIMARY ASSY

3.4 AF ASSY

3.5 FRONT L AND FRONT R ASSEMBLIES

4. PCB CONNECTION DIAGRAM

4.1 VOLUME ASSY

PCB connection diagram for the Volume Assembly.

4.2 HEADPHONE AND AC PRIMARY ASSEMBLIES

PCB connection diagrams for Headphone and AC Primary assemblies.

4.3 AF ASSY

PCB connection diagram for the AF Assembly.

4.4 FRONT L ASSY

4.5 FRONT R ASSY

6. ADJUSTMENT

6.1 IDLE CURRENT ADJUSTMENT

Procedure for adjusting the amplifier's idle current.