akira MMS-251 Service Manual Download | Manualshive

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Multi-Media Speaker

Service Manual

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Summary of Contents for MMS-251

Page 1: ...Multi Media Speaker Service Manual ...

Page 2: ... 2 Model No MMS 251 doc Version 1 0 MODEL MMS 251 ...

Page 3: ...MPORTANT SAFETY MEASURES 4 CHARACTERISTICS 5 REMOTE CONTROL DESCIPTIONS 6 PANEL REAR DESCRIPTION 7 BASIC OPERATION 8 SYSTEM CONNECTION PICTURE 9 SPECIFICATION 10 HOW TO REPAIR SPEAKER MALFUNCTION 11 EXPLODED VIEW 12 PART LIST 13 CIRCUIT DIAGRAM 14 ...

Page 4: ...line 2 Ventilation this set must be put in ventilated place DO NOT push disk on it or cloth to cover it The distance away from the wall should not be less than 10 centimeters DO NOT put this set on the bed sofa carpet or other objects with similar surface in case of good ventilation 3 Casing dismantling do not dismantle the casing If the one touches the inner components he will probably get seriou...

Page 5: ...l No MMS 251 doc Version 1 0 CHARACTERISTICS 5 1 channel independent channel adjustment for a home theatre effect With remote control 7 color LCD display Novelty outlook design High quality make and finishing ...

Page 6: ... direction logic 3 AUX key 4 Main volume control 5 Mute 6 Common stereo 7 Center adjustment 8 Surround adjustment 9 Subwoofer adjustment 10 5 1 CH key OPERATION RANGE OF THE REMOTE CONTROL Infrared sensor NOTICE there should be big obstacle between the remote control and the main unit ...

Page 7: ...7 Instruction light of prologic II 8 Signal input selection 9 Normal prologic II 10 Main volume control key Rear panel function 11 AUX left right input AC 3 input 12 Front left right input 13 Rear surround left right input 14 Center input 15 Bass input 16 Speaker output Main channel front right output Main channel front left output Center output Rear surround right output Rear surround left output...

Page 8: ...ample when increasing the main volume the indicator light will extinguished from PROLOGIC II lighten 5 1CH AUX MUTE STANDBY light when adjust to the loudest volume STANDBY light plashed continuously and stopped after 3 seconds Press button the volume decrease on the front panel the indicator lights all lightened then gradually extinguished from the STANDBY to MUTE AUX 5 1CH PROLOGIC II when the vo...

Page 9: ... 9 Model No MMS 251 doc Version 1 0 SYSTEM CONNECTION PICTURE ...

Page 10: ...rsion 1 0 SPECIFICATION ITEM SPECIFICATION Satellite speaker 12Wx5 Main speaker 30W Input impedance 10K Ω Frequency response for Satellite speaker 110Hz 20KHz Frequency response for Main speaker 42Hz 159Hz Power 220V 240V 50 60Hz ...

Page 11: ...oop deflection or speaker magnetic iron part deflection speaker plate distortion amplifier power is too large Voice noise Speaker plate broke speaker case gap broke speaker rear panel loose speaker grill loose High Frequency poor High frequency crossover capacitor quality is poor speaker unit is poor grill incorrect use Low Frequency poor Frequency crossover net is bad low frequency speaker unit i...

Page 12: ... 12 Model No MMS 251 doc Version 1 0 EXPLODED VIEW ...

Page 13: ...No MMS 251 doc Version 1 0 PART LIST No Parts name QTY 1 Port tube 1 PC 2 Control panel 1 PC 3 Transformed 1 PC 4 5YD F60A 4 Woofer 1 PC 5 220 Grille 1 PC 6 Amplifier 1 PC 7 BA4X12 Screw 2 PC 8 BA4X12 Screw 10 PC ...

Page 14: ... 14 Model No MMS 251 doc Version 1 0 CIRCUIT DIAGRAM ...

Page 15: ......

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