Alpine MRPT-220 Service manual

MRP-T220

SERVICE MANUAL

2/1 CHANNEL POWER AMPLIFIER

1 / 03-A
68E35051S01

TO ALPINE Home Page

<Cautions for Safe Repair Work>

r

s

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.

Warning

Caution

*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.

If you ignore this symbol and handle the product incorrectly or unsafely,
serious injury or death may result.

If you ignore this symbol and handle the product incorrectly or unsafely,
injury or only material damage may result.

Warning

Do not look squarely into the laser light
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.

Fuse Caution

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 o
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 Glove

Hot solder from solder splash may cause severe Wear gloves to prevent electrical shocks or injury
burns. from the end face of the metal.

Wiring Caution

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.

Packin g Assembly P arts List

TO CONTENTS

Sy mbol Description

Part No. Part No.

No.

101
102
103
104
105

03E34961S01 SCR,M4X20 TPG1(BLK)
03E34955S01 SCR,M3X10(B)MCH(BLK)
15E34956S01 COVER,RCA
28E20925S01 HOUSING RUBBER-A
75E22439S01 HOUSING RUBBER-B

Symbol Description

No.

106
#1 107
$1 107-1
$1 107-2

01E24042S01 ASS'Y KIT SP-IN WIRE
68P02294K68 OWNER'S MANUAL
68P02294K72 OWNER'S MANUAL(GE)
68P02294K73 OWNER'S MANUAL(I,G,S)

NOTE : #1 : For North American Model Only, $1 : For General Foreign Model Only, Others : Common.

Packing Method View

102

104

105

107

106

103

101

R

E
I

F
I

L
P

M

A

R
E

W
O

P

L
E

N
N

A
H

C

1
/
2

R

Specifications

TO CONTENTS

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±5dB

SP-INPUT : 2.3V±5dB

Input Impedance ..................................................................................................................................... 13.8±2k ohm

Frequency Response (0±1dB, Ref. 1kHz) ........................................................................................... 20Hz to 40kHz

Current Drain ..................................................................................................................................... No Signal : 1.5A

4ohm-2channel, 10% T.H.D. : 20A

Residual Noise (Input Shorted, 4ohm-2channel) ......................................................................... VR CENTER : 3mV

Channel Separation (Input Shorted, 1kHz, 40W x 2channel) ............................................................................. 55dB

Remote on Voltage (1W Output) ............................................................................................................ 6.5 +1, -1.5V

Remote Current Drain .................................................................................................................................. 3mA Max

Back Up Current Drain ...................................................................................................................................... 1.2mA

Fuse Requirement .................................................................................................................... 20A (For Battery Line)

Power Source ............................................................................................................................... DC14.4V (9 to 16V)

Dimensions (W x H x D) ........................................................................................................... 205.6 x 60 x 241.4mm

Weight ............................................................................................................................................................... 1.88kg

NOTE : Due to Continuing product improvement, specifications and designs are subject to change without notice.