KYE Systems Corp. Genius SP-T1200 User manual

Service Guide SP-T1200
Version 1.0 Page 1 of 22
SERVICE GUIDE
KYE SYSTEMS CORP
SP-T1200
Version:1.0
Revision History

Service Guide SP-T1200
Version 1.0 Page 2 of 22
Version Date Change
1.0 04/22/2008 Initial
1.1 06/20/2008 Add PCB photos

Service Guide SP-T1200
Version 1.0 Page 3 of 22
Table of Contents
RevisionHistory 2
TableofContents 3
GettingStarted 4
ConventionsUsedinthisGuide 4
SafetyPrecautions 4
Chapter 1. How to Handle Defective Returns 5
1.1Overview 5
1.2Problems 6
1.2.1 L/R channels no sound 7
1.2.2NoPower 7
1.2.3Touchfunctionfail 8
Chapter 2. Printed Circuit Board 9
2.1MCUControlBoard 9
2.2AmplifierBoard 10
2.3TouchControlBoard 10
2.4PowerBoard 11
Chapter 3. Specifications 11
Chapter 4. Block Diagram 12
Chapter 5. Exploded View 13
Chapter 6. Part List 14
Chapter 7. Schematic Diagram 17
7.1MCUControl 17
7.2AmplifierBoard 19
7.3TouchControl 20
7.4PowerBoard 21
Chapter 8. Important Notes 22
8.1 Packing Requirement for Sending the PCB Assembly by post 22
8.2 Short of Spare Parts while Repairing a Speaker system 22

Service Guide SP-T1200
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Getting Started
Conventions Used in this Guide
Pay Special Attention: Instructions that are important to remember and may
prevent mistakes.
Caution: Information that, if not followed, may result in damage to the product.
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.
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 substances, such as water, other liquids or chemical, from
entering the speakers while performing maintenance procedures on the
speakers.

Service Guide SP-T1200
Version 1.0 Page 5 of 22
Chapter 1. How to Handle Defective Returns
1.1 Overview
Receiving Defective speaker from customers
Analyzing possible
malfunction causes
Deciding & proceeding the
rectification methods
Replace necessary
defective
p
arts
Return the speakers with proper
re
p
acka
g
in
g
to customers
Verifying problems
proceeding
necessar
y
tests
Proceeding tests to
verify if the speaker is
functionin
g
normall
y
Function OK
Function NG
Function OKFunction NG

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1.2 Problems
Item Problem Description
1.2.1 L/R channels no sound
1.2.2 NO power
1.2.3 Touch function fail

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* Attention
Please follow the numbered sequence marked within parenthesis given in individual
Flow chat, in that this is the best-recommended sequence to rectify the problems.
1.2.1 L/R channels no sound
Problem
Analyze and
Identify the Causes
Solutions
1.2.2 No power
Problem
Analyze and
Identify the Causes
Solutions
L/R channels no sound
Broken or short circuit
Check solder points on
PCB
Defective
U1/U3/U4/U5/U7/U8
/U11/U14/U18/Q1/Q2
Speaker cable dis-connect or
speaker damaged
Re-connected speaker cable
or replace defective speakers
Check and replace
defective IC or
components
No power
Broken or short circuit
Check solder points on
PCB
Defective
U6/U15/Q5/Q10 External power supply
dis-connected or damaged
Re-connected power supply or
replace defective power supply
Check and replace
defective components

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1.2.3 Touch function fail
Problem
Analyze and
Identify the Causes
Solutions
Touch function fail
Broken or short circuit
Check solder points on
PCB
Defective
U16/J7 External power supply
dis-connected or damaged
Re-connected power supply or
replace defective power supply
Check and replace
defective components

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Chapter 2. PRINTED CIRCUIT BOARD
2.1 MCU Control Board
2.2 Amplifier Board

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2.3 Touch Control Board
2.4 Power Board

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Chapter 3. Specifications
NO. ITEM MEASUREMENT CONDITION UNIT NIN. NOM. MAX.
1 STANDBY POWER Power Supply:15V/2A W --- --- 3
2 Output Power f=1KHz, THD=10% , LPF:22KHz
(USE SPEAKER TEST) W 13 15 ---
dB -6 -4 -23 Audio Response (Ref:I/P:500mV/1KHz,O/P:1W) Low:80Hz
High:20KHz dB -8 -6 -4
4 Ref:I/P:500mV,O/P:1W f=100Hz % --- 0.5 1.0
f=1KHz % --- 0.5 1.0
Total Harmonic
Distortion
(LPF:22KHz) f=10KHz % --- 0.5 1.0
Sensitivity f=1KHz, Volume=MAX, THD=10% mV 400 500 6005
1W Sensitivity f=1KHz, Volume=MAX, O/P=1W mV 80 100 150
6 Channel Separation f=1KHz, O/P=1W, LÆR/RÆL dB 40 50 ---
7 Channel Unbalance f=1KHz dB -1 0 1
dB 70 75 ---S/N RATIO (Ref:I/P:500mV/1KHz,O/P:1W) LPF:22KHz
A-weight dB 75 80 ---
S/N RATIO (Ref:I/P:500mV/1KHz,Vol:Max)LPF:20KHz dB 75 80 ---
8
A-weight dB 80 85 ---
MinimumVolumeHum LPF:22KHz mVrms --- 0.5 1.09
MaximumVolumeHum LPF:22KHz mVrms --- 0.5 1.0
10 Muting Attenuation (Ref:I/P:500mV/1KHz,O/P:1W) LPF:20KHz dB 70 75 ---
11 BASS LEVEL f=100Hz,O/P:1W, BASS LVL LED 3=0dB dB -1 6 1
TREBLE LEVEL f=10KHz,O/P:1W, Treble LVL LED 3=0dB dB -1 6 1
Earphone Output Load=32Ω, I/P:500mV/1KHz, Vol:MAX mW 12 18 ---12
Earphone Distortion Load=32Ω, I/P:500mV/1KHz, Vol:MAX % --- 0.3 1.0
13 Earphone S/N RATIO (Ref:500mV/1KHz,VOL:MAX) LPF:22KHz dB 70 75 ---
A-weight dB 75 80 ---
14
Earphone
Channel
Separation
(Ref:I/P:500mV/1KHz,Volume:MAX)
dB 40 45 ---

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Chapter 4. Block Diagram

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Chapter 5. Exploded View
Right Side-Speaker
Left Side-Speaker

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Chapter 6. Part List
Right Side-Speaker
Ref. No Description Mfr’s Part No.
1 Housing, Black, Right 1101-0002140
2 Baffle, Black, Right 1101-0002142
3 Fixture, Black, Up 1101-0002149
4 Fixture, Black, Down 1101-0002150
5 Grill-Plate 1101-0002143
6 Lens 1101-0002148
7 Adorning 1101-0002144
8 Port 1101-0002145
9 PAD, Rubber 1105-0000299
10 Tweeter Speaker 8 Ohm, 15W, 1 inch 2SPK-0000229
11 Woofer Speaker 8 Ohm, 15W, 2.5 inch 1321-0000035
12 Gasket 1109-0000843
13 Gasket 1109-0000842
14 Power Board 2PCB-0000342
15 Gasket 1109-0000841
16 Gasket 1109-0000002
17 EVA 0039I17-0
18 Gasket 1109-0000873
19 Gasket 1109-0000840
20 Main Board 2PCB-0000339
21 Screw 1103-0000005
22 Lens 1101-0002146
23 Touch control board assembly 2PCB-0000341
24 Gasket 1109-0000871
25 Gasket 1109-0000870
26 Gasket 1109-0000847
27 Gasket 1109-0000848
28 Gasket 1109-0000849
29 Gasket 1101-0000886
30 Double-Side Sticker 1112-0000051

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Left Side-Speaker
Ref. No. Description Mfr Parts No.
Transistors
Q1 Transistor,KTD1302,TO-92,Tapping 1001-0000055
Q2 Transistor,MMBT3904,SOT-23,SMD 1001-0000004
Q3, Q8, Q11, Q12
Q13, Q14, Q15
Q16 ,Q17, Q18 Q19,
Q20, Q21
Transistor,MMBT3906,SOT-23,SMD 1001-0000005
Q5, Q10 Transistor,MMBT3904,SOT-23,SMD 1001-0000004
IC
U1 IC-Audio Control Circuit, PT2315, SO20,
20Pin , SMD 1004-0000030
U2, U3, U4,U5,U18 IC-AMP,SJ4558,SO8,8Pin,SMD 1004-0000036
U6 IC-Others,PMK35EP,SO8,8PIN,SMD 1004-0000250
U7 IC-Others,NJM2761,TVSP10,10Pin,SMD 1004-0000021
U8 IC-AMP,LM4881,SOP8,8PIN,SMD 1004-0000074
U14 IC-MCU,STC89C52,LQFP-44 1004-0000255
Ref. No Description Mfr’s Part No.
1 Housing, Black, Left 1101-0002139
2 Baffle, Black, Left 1101-0002141
3 Fixture, Black, Up 1101-0002149
4 Fixture, Black, Down 1101-0002150
5 Grill-Plate 1101-0002143
6 Lens 1101-0002148
7 Adorning 1101-0002144
8 Port 1101-0002145
9 PAD, Rubber 1105-0000299
10 Tweeter Speaker 8 Ohm, 15W, 1 inch 2SPK-0000229
11 Woofer Speaker 8 Ohm, 15W, 2.5 inch 1321-0000035
12 Gasket 1109-0000843
13 Gasket 1109-0000842
14 Gasket 1109-0000002
15 EVA 0039I17-0
16 Amp board assembly 2PCB-0000340
17 Screw 1103-0000005

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Ref. No. Description Mfr Parts No.
U15 IC-Power Regulator,L7805CV,3Pin, Dip 1282000461
U16 IC-Others,EKT8120,QFN,40PIN,SMD 1004-0000253
Diodes
LED1, LED2, LED3
LED4, LED5, LED7
LED8, LED9, LED10,
LED11 LED12,
LED13
LED14 ,LED15
Diode-LED Chip,1S0603A21A0CA01-HQ 1003-0000101
LED6 Diode-LED Chip,1SB0603B12E0CA01-HQ 1003-0000100
D1, D3, D4 Diode-Chip,1N4148WS,Tapping 1003-0000082
D9 Diode-ZN Chip,1/2W,9.1V,Tapping 1003-0000010
ESD1, ESD2,ESD7 Suppressors,PD03S180H050PT,180V,5PF,
0603 1021-0000002

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Chapter 7. Schematic Diagram
7.1 MCU control board (1/2)

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7.1 MCU control board (2/2)

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7.2 Amplifier board

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7.3 Touch control board