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Model No.: HTS-999-311 
Version: 1.0 

 

   

 
 
 
 

SAFE OPERATION 

1.  Protect voltage line 

This equipment can produce output while operating at 2-channel mode. 
It is important to preset the maximum volume to a safe level. The factory setting is 0db. 

2.  Be sure to connect to a correct voltage, which is AC240V 50Hz/60Hz 

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 120V/240V 50Hz/60Hz 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 to it. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for HTS-999-311

Page 1: ...Home Theatre System Service Manual ...

Page 2: ... 2 Model No HTS 999 311 Version 1 0 MODEL HTS 999 311 ...

Page 3: ... 3 Model No HTS 999 311 Version 1 0 CONTENTS SAFE OPERATION 4 TROUBLE SHOOTING 5 FRONT PANEL CONTROL DIAGRAM 9 AMPLIFIER DIAGRAM 10 CIRCUIT DIAGRAM 11 ...

Page 4: ...y 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...

Page 5: ...it relay is ok c Check the Pre amp circuit d Check whether the source input switch is ok e Check the source input connection 3 Microphone no sound 2 Check the power supply 3 Check the Mic input 4 Check the echo 4 No radio a Check the power supply b Check the radio wire c Check the source input switch 5 VFD Display no display a Check the power 24V 6V b Check the VFD display 6 DVD no output a Check ...

Page 6: ... 6 Model No HTS 999 311 Version 1 0 8 Output distortion a Check signal input b Check power 40V c Check amplifier circuit d Check protecting circuit ...

Page 7: ...olution Change damage parts 1 Hum sounds Analyse Filter electric capacitor 3300uF 50V will be invalidation when it is at high voltage or high temperature and humidity Solution Change damage capacitor 3300uF 50V 2 VFD display damage Analyse a Due to the working voltage of VFD is connecting to the transformer if the voltage is too high easy be burn out the VFD display b The filament of the display i...

Page 8: ... new parts to instead of the damage parts Place the player in the place without electromagnetism interfering Operate the player at a steady voltage 4 The parts big power transistor C5196 burn out Analyse a Refer to Amplifier Diagram to change the possible damage parts which caused by C5196 burnout Test by digital multimeter to make judgement whether the parts are workable or not b Series wound con...

Page 9: ... 9 Model No HTS 999 311 Version 1 0 FRONT PANEL CONTROL DIAGRAM ...

Page 10: ... 10 Model No HTS 999 311 Version 1 0 AMPLIFIER DIAGRAM ...

Page 11: ...D GND GND 40V 40V Name R CHANNEL 2200U 50V C U D4 2200U 50V C 2200U 50V C 2200U 50V C 104 CAP 104 CAP 6A250V 5A 40A250V 1P4 AC 220V 5A 1F3 GND 101 100U 5551 5551 5401 33K 33K 1K 200 24 200 47U 3K9 1K 47 D1273 5551 5401 4148 33K 100 1K 3K9 10 104 U SPEAKER 4U7 D1273 5WR25 5WR25 GND GND GND 30V 30V Name SURR R CHANNEL Name CENT CHANNEL GND IC1 100P 22K 100K 2K2 GND 4U7 10K 1K U B100K GND GND IC1 100...

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