akira HTS-393-001 User manual

Home Theatre System
Service Manual

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Model No.: HTS-393-001
Version: 1.0
MODEL:
HTS-393-001

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Model No.: HTS-393-001
Version: 1.0
CONTENTS
SAFE OPERATION ................................................................................................................................. 4
TROUBLE SHOOTING .......................................................................................................................... 5
CIRCUIT DIAGRAM .............................................................................................................................. 9
PART LIST ............................................................................................................................................. 12

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Model No.: HTS-393-001
Version: 1.0
SAFE OPERATION
1. Protect voltage line
It is important to preset the maximum volume to a safe level .The factory setting is 20dB.
2. Be sure to connect to a correct voltage, which is AC220V~240V 50Hz
If you are not sure of the power supply to your home, please consult your local AKIRA dealer or
the local power provider (It is AC 220V~240V 50Hz optional).
3. Please operate this equipment in an airy area
Keep it away from direct sunlight and high temperature area.
Do not operate from the box and ensure of sufficient air circulation during operation.
4. Protect power cord.
Do not place heavy object or stamp on the power cord. Don’t pull or push the power cord with
excessive force.
5. Do not drop metal objects into the equipment.
Avoid dropping metal objects like pin, needle and coin into the equipment as it will cause a short
circuit and damage the equipment.
6. Avoid water, dust and moisture.
Do not put the equipment in a dusty or misty place. Flower vase and other liquid container should
not be placed over it.
7. Avoid cleaning with volatile solution
Do not use any volatile solution to clean the equipment, which may cause damage it.

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Model No.: HTS-393-001
Version: 1.0
TROUBLE SHOOTING
FAULT REMEDY
NO POWER a. Check power cord correct connecting.
b. Check the 220V~240V-voltage switch is at the correct position.
c. Check the power switch is ok.
d. Check the 250V 6A-safety tube is fine.
e. Check the transformer is fine.
NO SOUND a. Check the power+40V(OK).
b. Check whether the protecting circuit (relay) is ok.
c. Check the Pre-amp circuit.
d. Check whether the source input switch is ok.
e. Check the source input connection.
MICROPHONE NO SOUND a. Check the power supply.
b. Check the Mic input.
c. Check the echo.
NO RADIO a. Check the power supply.
b. Check the radio wire.
LED DISPLAY NO DISPLAY a. Check the power AC 9V.
b. Check the LED display.
DVD NO OUTPUT a. Check power +5V.
b. Check CD4053/4052.
AMPLIFIER WITH ONE
CHANNEL OUTPUT
a. Check the signal input.
b. Check amplifier circuit.
c. Check protecting circuit.
OUTPUT DISTORTION a. Check signal input.
b. Check power+40V.
c. Check amplifier circuit.
d. Check protecting circuit.

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Model No.: HTS-393-001
Version: 1.0
Before repair, please make sure the local power supply is 220V~240V
SYMPTON ANALYSE SOLUTION
CRACKING, SMALL
SOUNDS
1. If the input signal accompany with
direct current, it possibility strides
the selecting IC CD4052, then
cause the sounds cracking, and
small.
2. The electric capacitor 47μF/50V
of center and surround output is
invalidation by the effects of
temperature and humidity then
sounds will be small.
3. The possible damage parts: MC
4052 and PT2315
PT2315 function: Volume control
CD4052 function: Dual 4-channel
Analog Multiplexer
4. Testing whether the IC
CD4052\PT2315 power supply
(+5.1V) is natural
Change damage parts.
HUM SOUNDS Filter electric capacitor 2200μF /25V
will be invalidation when it is at high
voltage or high temperature and
humidity.
Change electric capaciton 2200
μF /25V.
KARAOKE
ABNORMALITY
The possible damage parts: IC TL084
and IC PT2399, please refer to the Tone
control Diagram.
IC TL084 (1) function: MIC volume,
MIC bass, MIC treble contron
IC PT2399 function: OK ECHO, OK
DELAY contron.
Change new parts to instead of
the damage parts.
CETER AND
SURROUND
CHANNEL NO
OUTPUT
The possible damage parts: IC 4053 and
IC TL084, please refer to the Tone
control Diagram.
IC 4053 function: 2 channel and 6
channel selection
IC TL084(2) function: Ceter and
Surround channel plus control
Change new parts to instead of
the damage parts.

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Model No.: HTS-393-001
Version: 1.0
SYMPTON ANALYSE SOLUTION
LED DISPLAY BURN
OUT
1. Due to the working voltage of
LED and background light is
connecting to the transformer, if
the voltage is too high, easy be
burn out the LED display or
background light.
2. The filament of the display is
friability, so must avoid to strong
shock or more easy mangles the
display.
3. The possible damage parts: LED
display, electric capacitor 4700μ
F /50V ,IC HT1621B , please
refer to the Front panel control
Diagram.
4. Testing whether the power from
transformer to the front panel
controller is natural, AC22V and
AC6V.
5. Testing whether the power the
background light power supply
(+5V) is natural.
Change new parts instead of the
damage parts. After repairing
momentary power on, observing
whether the LED is abnormity.
FRONT PANEL
LOSES CONTROL,
CAN NOT CHOOSE
THE INPUT SIGNAL
1. Be interfered by strong
electromagnetism or wavy power
supply.
2. The working voltage is too high, or
CPU AT89C52 is losing control by
the temperature and humidity.
3. The possible damage parts:
PT2315, MC4052 and HT1621,
please refer to the front panel and
amplifier control Diagram.
CPU AT89C52 function: Remote
receiver and decoder
MC4052 function: Dual 4-Channel
Analog Multiplexer
HT1621 function: Quad
Operational Amplifier, VFD
display driver.
Testing whether the IC working
voltage (+5.1V) is natural.
Change new parts to instead of
the damage parts.
Place the player in the place
without electromagnetism
interfering. Operate the player al
a steady-voltage.

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Model No.: HTS-393-001
Version: 1.0
SYMPTON ANALYSE SOLUTION
THE PARTS BIG
POWER
TRANSISTOR C5198
BURN OUT
1. Refer to Amplifier Diagram to
change the possible damage parts
which caused by C5198 burnout
(Test by digital multimeter to make
judgement whether the parts are
workable or not).
2. Series-wound connect one 40W
bulb at the wavy power supply
220V/240V, it will react on
protecting when you are repairing.
3. Make sure changed all of the
damage parts, then electrify, power
on.
4. In the 40W bulb suddenly shinny,
then dinginess slowly (It indicates
that the player is work normally) If
the bulb is shinny all the way, then
there is still some short circuit on
the PBC. Pls. rechecks there is any
other damage parts).
Change new parts to instead of
the damage parts.

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Model No.: HTS-393-001
Version: 1.0
CIRCUIT DIAGRAM
AMP

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Model No.: HTS-393-001
Version: 1.0
TONE

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Model No.: HTS-393-001
Version: 1.0
FRONT PANEL

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Model No.: HTS-393-001
Version: 1.0
PART LIST
NO PART
Q'TY
(PCS)
1 IC 24C02 1
2 IC 89C52 1
3 IC HT1621B 1
4 IC TDA2030A 3
5 IC PT2315 1
6 IC T62 1
7 IC TC4052 1
8 IC TC4053 2
9 IC TL084 3
10 Volume B10K-20MM 1
11 Volume B10K-20MM 1
12 Volume B50K-20MM 2
13 Volume B100K-20MM 1
14 360°pulse switch，L:25MM 1
15 1A round bridge 2
16 8A BRIDGE 808 1
17 8A BRIDGE RS806 1
18 3 terminal manostat 78L05 1
19 3 terminal manostat 7812 1
20 Triod 1015 1
21 Triod 1815 7
22 Triod 5401 11
23 Triod 5551 12
24 Triod 9015 7
25 Triod A1941/C5198 3
26 Triod C9014 3
27 Triod C945 9
28 Diode 5V1/0.5W 1
29 Diode 6V8/0.5W 2
30 Diode 9V1/0.5W 1

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Model No.: HTS-393-001
Version: 1.0
NO PART
Q'TY
(PCS)
31 Diode 12V/1W 2
32 Diode IN4001 4
33 Dioe STIN4148 24
34 Cable 1
35 Display 255X140MM 1
36 Tuning board 180X85MM 1
37 Master volume board 31X22MM 1
38 EMC Board 98X40MM 1
39 LED Board 245X11MM 1
40 MIC volume board 15.5X14MM 1
41 Amp. Board 270X255MM 1
42 LCD 1
43 LED backgroud board 1
44 Rmote receiver DA5033-1 1
45 Power key KDC-A04-1 1
46 Fuse F2A/250V 2
47 Delay fuse T4A/250V 2
48 Fuse F6A/250V 2
49 Red φ2 LED 203THD 5
50 3-way relay HH53P 1
51 晶振 6MHz 1
52 spekeaker output socket WP6-10A 2
53 socket AV6-8.4-7 2
54 mic CK3-6.35-2B 2
55 soft-touch key l6X6X21 12
56 Jumping wire 5MM 21
57 Jumping wire 7.5MM 55
58 Jumping wire 10MM 55
59 Jumping wire 12.5MM 24
60 Jumping wire 15MM 27
61 Jumping wire 17.5MM 2
62 Jumping wire 20MM 13
63 Jumping wire 22MM 3
64 Jumping wire 30MM 4

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Model No.: HTS-393-001
Version: 1.0
NO PART
Q'TY
(PCS)
65 Carbolic resistor 1/0.25W±5% 2
66 Carbolic resistor 2.2/0.25W±5% 3
67 Carbolic resistor 10/0.25W±5% 12
68 Carbolic resistor 22/0.25W±5% 1
69 Carbolic resistor 100/0.25W±5% 7
70 Carbolic resistor 470/0.25W±5% 1
71 Carbolic resistor 510/0.25W±5% 5
72 Carbolic resistor 1K/0.25W±5% 9
73 Carbolic resistor 1K5/0.25W±5% 1
74 Carbolic resistor 2K/0.25W±5% 5
75 Carbolic resistor 2K2/0.25W±5% 1
76 Carbolic resistor 3K3/0.25W±5% 3
77 Carbolic resistor 3K9/0.25W±5% 2
78 Carbolic resistor 4K7/0.25W±5% 10
79 Carbolic resistor 5K1/0.25W±5% 2
80 Carbolic resistor 5K6/0.25W±5% 3
81 Carbolic resistor 10K/0.25W±5% 32
82 Carbolic resistor 12K/0.25W±5% 3
83 Carbolic resistor 15K/0.25W±5% 3
84 Carbolic resistor 20K/0.25W±5% 2
85 Carbolic resistor 22K/0.25W±5% 7
86 Carbolic resistor 33K/0.25W±5% 4
87 Carbolic resistor 36K/0.25W±5% 1
88 Carbolic resistor 39K/0.25W±5% 2
89 Carbolic resistor 47K/0.25W±5% 6
90 Carbolic resistor 56K/0.25W±5% 2
91 Carbolic resistor 68K/0.25W±5% 1
92 Carbolic resistor 100K/0.25W±5% 3
93 Carbolic resistor 270K/0.25W±5% 1
94 Carbolic resistor 470K/0.25W±5% 2
95 Carbolic resistor 680K/0.25W±5% 1
96 Carbolic resistor 68/0.5W±5% 1
97 Carbolic resistor 100/0.5W±5% 6
98 Carbolic resistor 150/0.5W±5% 3

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Model No.: HTS-393-001
Version: 1.0
NO PART
Q'TY
(PCS)
99 Carbolic resistor 180/0.5W±5% 1
100 Carbolic resistor 220/0.5W±5% 21
101 Carbolic resistor 470/0.5W±5% 3
102 Carbolic resistor 1K/0.5W±5% 3
103 Carbolic resistor 1K5/0.5W±5% 6
104 Carbolic resistor 2K7/0.5W±5% 6
105 Carbolic resistor 3K3/0.5W±5% 9
106 Carbolic resistor 4K7/0.5W±5% 3
107 Carbolic resistor 5K1/0.5W±5% 2
108 Carbolic resistor 10K/0.5W±5% 6
109 Carbolic resistor 15K/0.5W±5% 9
110 Carbolic resistor 33K/0.5W±5% 3
111 Carbolic resistor 39K/0.5W±5% 6
112 Carbolic resistor 47K/0.5W±5% 13
113 Carbolic resistor 10/2W±5% 3
114 Concrete Resistor 150/3W 1
115 Concrete Resistor 0.33/5W 6
116 Concrete Resistor 100/5W 1
117 Concrete Resistor 390/5W 1
118 Ceramic capacitor 5P/50V±20% 1
119 Ceramic capacitor 30P/50V±20% 7
120 Ceramic capacitor 471/50V±20% 3
121 Ceramic capacitor 561/50V±20% 3
122 Ceramic capacitor 104/50V±20% 15
123 Terylene capacitor 561/63V±20% 2
124 Terylene capacitor 102/63V±20% 2
125 Terylene capacitor 272/63V±20% 2
126 Terylene capacitor 332/63V±20% 2
127 Terylene capacitor 562/63V±20% 2
128 Terylene capacitor 682/63V±20% 1
129 Terylene capacitor 103/63V±20% 1
130 Terylene capacitor 153/63V±20% 1
131 Terylene capacitor 333/63V±20% 1

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Model No.: HTS-393-001
Version: 1.0
NO PART
Q'TY
(PCS)
132 Terylene capacitor 473/63V±20% 1
133 Terylene capacitor 823/63V±20% 2
134 Terylene capacitor 104/63V±20% 21
135 Terylene capacitor 154/63V±20% 1
136 Terylene capacitor 224/63V±20% 1
137 Electric capacitor 0.4U7/15V 2
138 Electric capacitor 2U2/16V 3
139 Electric capacitor 4U7/16V 21
140 Electric capacitor 10U/16V 1
141 Electric capacitor 22U/16V 4
142 Electric capacitor 47U/16V 1
143 Electric capacitor 47U/25V 5
144 Electric capacitor 100U/16V 8
145 Electric capacitor 100U/25V 3
146 Electric capacitor 220U/16V 8
147 Electric capacitor 220U/25V 2
148 Electric capacitor 220U/35V 2
149 Electric capacitor 330U/16V 5
150 Electric capacitor 330U/25V 3
151 Electric capacitor 1000U/16V 2
152 Electric capacitor 2200U/25V 2
153 Electric capacitor 6800U/50V 2
154 Voltage capacitor 103/AC400V 1
155 Voltage capacitor 224/AC275V 2
156 Big radiator :7512A,L :271mm 1
157 Small radiator (7812) 24*25 1
158 mica 6
159 sponge cusion H:5mm 6
160 ST3×12 6
161 ST3×8 5
162 Bt screws M3×12 4
163 nut M3 3
164 ring 3 14
167 radiator 1

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Model No.: HTS-393-001
Version: 1.0
NO PART
Q'TY
(PCS)
165 Front panel 1
166 Iron case 1set
168 Big volume knob φ48 2
169 Middle volume knobφ15×17 4
170 square key 5×12 12
171 plastic pole =40 实心 8
172 plastic pole H=20 6
173 power cord (2.2m) 1
174 power wire nip 1
175 Remote controller 1
176 Foot(2pcs gold 2pcs black）φ59 1
177 wire 3*80 6
178 carton 1
179 styrofoam 1
180 instruction manual 1
181 Transformer 1
182 Radio board YST933-C9 with wire 1
183 Screws ST3×8 4
184 Screws ST4×8 12
185 Screws ST3×10 14
186 Screws ST3×6 45
187 Screws ST3×8 36
188 ring M3×4 8
189 ring M3×6 6
190 M5×25 4
191 nut M5 4
192 plastic bag 1