Pay Special Attention: Instructions that are important to
Attention
remember and may prevent mistakes.
Caution: Information that, if not followed, may result in
damage to the product.
P-P110
Safety Precautions
The following precautions should be observed in handling the speaker described in this guide:
Place the speakers on a flat level and stable surface.
Do not place the speakers in environments subject to mist, smoke, vibration, excessive dust,
salty or greasy air, or other corrosive gases and fumes.
Do not drop or jolt the speakers.
Do not allow anything to drop into the subwoofer case through its ventilator, as it could
result in fatal electric shock or fire.
Place the unit far enough from other equipments for good heat dissipation.
Disconnect the AC power cord from the AC outlet before performing any maintenance on the
speakers.
Do not perform any maintenance with wet hand.
Prevent foreign substance, such as water, other liquids or chemicals, from entering the
speakers while performing maintenance procedures on the speakers.
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Chapter 1. How to Handle Defective Returns
P-P110
1.1 Overview
Receiving Defective
Speakers
from Customers
Verifying problems&
Proceeding necessary tests
Functioning NG
Analyzing possible
Malfunction causes
Functioning NG
Deciding & proceeding
the rectification methods
Functioning OK
Replacing necessary
Defective parts
Proceeding tests
To verify if the speaker is
functioning normally
Pro
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Functioning OK
Return the speakers with
er repackaging to customers
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1.2 Problems
Item Problem descriptions
1.2.1 Power LED (indicator) unlighted
1.2.2 Does not work or one channel no sound
1.2.3 Noise
P-P110
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Please follow the numbered sequence marked within parenthesis given in individual
Flow chart, in that this is the best-recommended sequence to rectify the problems.
1.2.1 Power LED (indicator) unlight
Problem
Attention
Power LED
Analyze and
Identify the
Causes
Secondary wire
O f transformer is
Disconnected or
defective
Solutions
Resolder or replace defective component(s)
(indicator)
Diode D1.2.3.4
burnt
unlight
Defective power
S w itch or LED
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1.2.2 Does not work or one channel no sound
P-P110
Problem
Analyze and
Identify the
Causes
Solutions
Defective
Audio cable
Replace
Audio cable
Does not work or
One channel no sound
Broken o
Short circuit
Check solde
Points on PCB
And resolder
defective one(s)
Defective IC
Check and replace
Defective IC
1.2.3 Noise
Problem
Analyze and
Identify the
Causes
Solutions
Component(s) around
IC is/are defective
Check and replace
defective component(s)
Noise
Defective VRDefective IC
Replace
Defective VR
Replace defective IC
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Chapter 2. Specifications
No. DESCRIPTION UNIT NOMINAL LIMIT
1 INPUT SENSITIVITY AT 10% mV 480 480+/-50
2 DISTORTION(1 KHz)AT 1W % 0.5 <3
3 OUTPUT POWER AT 10% DISTORTION W 0.5 0.5+/-0.15
4 S/N RATIO dB 65 ≥55
5 CHANNEL SEPARATION dB 46 ≥40
6 FREQUENCY RESPONSE
(DOWN 3dB) (LOW)
(HIGH)
7 HUM LEVEL (AT VOL. MIN.)
HUM LEVEL (AT VOL. MAX.)
8 OPERATING VOLTAGE MAX.253VAC
MIN. 207VAC
TEST CONDITION:
1) LOAD 4Ω
2)RATED POWER 50 mW VOLUME AT MAX.
P-P110
Hz
KHz
mV
mV
150
20
0.5
1
150+/-30
20+/-1
≤2
≤3
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Chapter3. Block Diagram
R.CH SPEAKER
L.CH SPEAKER
T
L.
POWER
P-P110
TRANSFORMER AC IN STAND-BY FILTER
VOLUME
L.I
AUDIO INPUT
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Chapter 4. Exploded View
P-P110
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Chapter 5. Part List
P-P110
Ref. No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
2
3
4
5
6
7
Description
Right speaker:
Signal Wire 6.3',Green Pin
Speaker Cable,5.9',BLACK Color,Zero to Zero
Screw,B PT3.0x16mm,Black
Rear Cover(R),SP-P110,Black Color,AC Type
Transormer,230V,8V/250mA
Screw,PWB%%C3x10mm,Black
Speaker ,5090,4 , 1W,Magnetically Shielded
Front Panel(R),SP-P110,Black Color
Clothframe,SP-P110,Black Color
Knob,SP-P110,Black Color,φ10x16k
Button,SP-P110,black Color, φ8.5x15
Control&Amplifier PCB Assembly,SP-P110,94V0
IC UTC2025
Screw,PWA3.0x8mm,Black
AC Cord,5.9',BLACK Color 250V/2.5A 2PIN, CE
Left speaker:
Screw,B PT3.0x16mm,Black
Rear Cover(L),SP-P110,BLACK Color,AC Type
Screw,PWB%%C3x10mm,Black
Speaker ,5090,4 , 1W,Magnetically Shielded
Front Panel(L),SP-P110, black Color
Clothframe,SP-P110,black Color
Screw,PWA3.0x8mm,Black
6.1 Packing requirement for sending the PCB assembly by post
PCB assembly is a kind of sophisticated electronic circuit board. Well packing
Will be required when sending them by post.
*Some sophisticated IC components are mounted on the PCB assembly, hence
it is necessary to pack each PCB assembly with a separate static protecting bag,
in order to avoid static electricity.
*Reliable external packing is also very important when sending the PCB assembly
by post, in that it would avoid unnecessarily lost or damage.
P-P110
6.2 Short of spare parts while repairing a speaker system
If you are short of spare parts when you have some spesker systems waiting to
be repaired,it would be recommended to take the necessary parts from one
Speaker system,so that you may haye the as many speaker systems
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Chapter 7. Circuit schematic
P-P110
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