akira AMP-300 User manual

Amplifier
Service Manual

2
Model No.: AMP-300
Version: 1.0
MODEL:
AMP-300

3
Model No.: AMP-300
Version: 1.0
CONTENTS
SPECIFICATION............................................................................................................................... 4
DISASSEMBLY INSTRUCTION ...................................................................................................... 5
FLOW CHART .................................................................................................................................. 7
PRINCIPLE CHART.......................................................................................................................... 8
PCB BOARD ..................................................................................................................................... 9
GENERAL CHART ......................................................................................................................... 11
PART LIST ...................................................................................................................................... 12

4
Model No.: AMP-300
Version: 1.0
SPECIFICATION
Power at 6 Ohm @ 1% THD
All channels driven: 70 watt per channel
Power at 6 Ohm @ 10% THD
All channels driven: 80 watt per channel
Power at 8 Ohm @ 1% THD
All channels driven: 60 watt per channel
Power at 8 Ohm @ 10% THD
All channels driven: 70 watt per channel
THD <1%
Frequency response 20Hz – 20KHz
SN Ratio >75dB
Impedance Output 8Ω
Selectivity 250mv
522KHz ~ 1611KHz AMFrequency Range
87MHz ~ 108MHz FM

A
5
Model No.: AMP-300
Version: 1.0
DISASSEMBLY INSTRUCTION
Study the cords layout carefully before any takedown. Set them as original after servicing.
1. Amplifier board;
- disassembly 3 screws A(fig.1)
- disassembly 4 screws B(fig.2)
- move away the amplifier board
2. Indicator panel;
- disassembly 9 screws C(fig.3)
- move away the indicator panel

B
Fig 2
C
Fig 3
7
PCB BOARD 6
Model No.: AMP-300
Version: 1.0

POWER
SIGNAL INPUT FRONT AMPLIFIER
DECODE AMPLIFIER
LIST /KEY CONTROL
7
Model No.: AMP-300
Version: 1.0
FLOW CHART

8
Model No.: AMP-300
Version: 1.0
PRINCIPLE CHART

9
Model No.: AMP-300
Version: 1.0
PCB BOARD

10
Model No.: AMP-300
Version: 1.0
PCB BOARD