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SERVICE MANUAL
4 CHANNEL + MONO POWER AMPLIFIER




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3 / 08-A
T0110800010




PDX-5

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.




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PDX-5



Contents


Packing Assembly Parts List 4

Packing Method View 4

Specifications 5

Block Diagram 6

Parts Layout on P.W.Boards and Wiring Diagram 7 to 8

Schematic Diagram 9 to 13

Terminal Voltage of IC/TR 14 to 17

Description of IC Terminal 18

Exploded View (Cabinet) 19




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




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PDX-5

Packing Assembly Parts List
Symbol Part No. Description Symbol Part No. Description
No. No.
#1 101 68-10872Z28 MANUAL,OWNER'S(AO) 103 09E39816S01 CONN,PLUG 2P
$1 101 68-10872Z29 MANUAL,OWNER'S(GO) 104 03E39508S01 SCR,M4X40(WP)(BLK)
%1 101 68-10872Z29 MANUAL,OWNER'S(GO) 105 03E36691S01 WRENCH,2X2.3
&1 101 68-10872Z31 MANUAL,OWNER'S(AOCHR) 106 47E35195S01 WRENCH,4X4.6
$1 102 68-10872Z30 MANUAL,OWNER'S(I,G,S)


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




Packing Method View
101 102




106
105




104 X4




103 X2




103 X3




TO CONTENTS
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PDX-5

Specifications
Power Output (FULL RANGE) (1) 20Hz, 4ohm, 1.0% T.H.D. (14.4V) 75W
100Hz, 4ohm, 1.0% T.H.D. (14.4V) 75W
1kHz, 4ohm, 1.0% T.H.D. (14.4V) 75W
Power Output (MONO) (1) 20Hz, 4ohm, 1.0% T.H.D. (14.4V) 300W
100Hz, 4ohm, 1.0% T.H.D. (14.4V) 300W
(2) 20Hz, 2ohm, 1.0% T.H.D. (14.4V) 300W
100Hz, 2ohm, 1.0% T.H.D. (14.4V) 300W
T.H.D. (100Hz) (1) FULL RANGE (1W/ 4ohm (14.4V)) 0.50%
(2) MONO (1W/ 4ohm (14.4V)) 0.50%
Residual Noise (Input Short) (1) FULL RANGE 10mV
(2) MONO 10mV
S/N Ratio (Input Short) (1) FULL RANGE (Ref.Output 1W/ 4ohm) 66dB
FULL RANGE (Ref.Output 75W/ 4ohm) 85dB
(2) MONO (Ref.Output 1W/ 4ohm) 60dB
MONO (Ref.Output 300W/ 4ohm) 85dB
Frequency Response (1) FULL RANGE (Ref.Output 1W/ 4ohm, Ref.100Hz) 20Hz : -1.0