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SERVICE MANUAL
2/1 CHANNEL POWER AMPLIFIER
TO ALPINE Home Page
1 / 03-A
68E35051S01
MRP-T220
The following cautions will prevent accidents in the workplace and will ensure safe products.
*The symbols indicate caution is needed to prevent injuries and damage to property.
The symbols and their meanings follow.
If you ignore this symbol and handle the product incorrectly or unsafely,
Warning serious injury or death may result.
If you ignore this symbol and handle the product incorrectly or unsafely,
Caution injury or only material damage may result.
*The following symbols indicate two levels of cautions.
When you see this symbol, you have to be very careful.
When you see this symbol, you have to follow the instructions there.
Warning
Do not look squarely into the laser light Fuse Caution
coming from the pickup. Always use a designated fuse.
You may loose you sight. Use of an incorrect fuse may result in a fire.
Caution
Do not allow wiring to be caught in the Battery Caution
screw/chassis. Use the designated battery.
If wiring is caught in the screw/chassis, it may Confirm the correct polarity and seat of the
cause a short circuit, resulting in a fire. battery.
An incorrect battery or an improperly connected
or seated battery may result in a fire.
High Temperature Caution Designated Parts Caution
Touching the heat sink may cause severe burns. Look up the part list and ensure that only
designated parts are used to prevent problems or
accidents.
Reverse Power Supply Connections or Wiring Caution
Misconnections Caution Ensure that the wiring is correct when rewiring to
Reverse power supply connections or prevent problems with ignition/breakdown.
misconnections may cause ignition problems and
smoke may result.
Soldering Caution Wear Gloves
Hot solder from solder splash may cause severe Wear gloves to prevent electrical shocks or injury
burns. from the end face of the metal.
Contents
Packing Assembly Parts List
Packing Method View
Specifications
Block Diagram
Parts Layout on P.W.Boards and Wiring Diagram
Schematic Diagram
Terminal Voltage of IC/TR
Exploded View (Cabinet)
NOTE : Due to continuing product improvement, specifications and designs are subject to
change without notice.
Packing Assembly Parts List
Symbol Part No. Description Symbol Part No. Description
No. No.
101 03E34961S01 SCR,M4X20 TPG1(BLK) 106 01E24042S01 ASS'Y KIT SP-IN WIRE
102 03E34955S01 SCR,M3X10(B)MCH(BLK) #1 107 68P02294K68 OWNER'S MANUAL
103 15E34956S01 COVER,RCA $1 107-1 68P02294K72 OWNER'S MANUAL(GE)
104 28E20925S01 HOUSING RUBBER-A $1 107-2 68P02294K73 OWNER'S MANUAL(I,G,S)
105 75E22439S01 HOUSING RUBBER-B
NOTE : #1 : For North American Model Only, $1 : For General Foreign Model Only, Others : Common.
Packing Method View
102
104
105 107
103
101
IER
106
IF
PL
AM
R
WE
PO
EL
N
AN
CH
2/1
R
TO CONTENTS
Specifications
T.H.D. (Stereo, 20Hz/1kHz/20kHz) ............................................................... 40W/ch, 4ohm-2channel, 14.4V : 0.2%
(BTL, 20Hz/1kHz/20kHz) ................................................................. 100W/ch, 4ohm-1channel, 14.4V : 1.0%
Power Output (Stereo, 20Hz/1kHz/20kHz) ............................................ 4ohm-2channel, 0.2% T.H.D., 14.4V : 40W
(BTL, 20Hz/1kHz/20kHz) .......................................... 4ohm-1channel, 1.0% T.H.D., 14.4V : 100W
S/N Ratio (Ref. Output 40W/4ohm, Input shorted) .............................................................................................. 94dB
Input Sensitivity (40W Output, GAIN-VR (CENTER POSITION)) ......................................... RCA-INPUT : 1.2V