Akai QX-3700 Service Manual Download

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SERVICE MANUAL

Model:

QX3700

MINI HIFI

MICRO COMPONENT SYSTEM

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Summary of Contents for QX-3700

Page 1: ...SERVICE MANUAL Model QX 3700 MINI HI FI MICRO COMPONENT SYSTEM www akai ru All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 2: ...OUDNESS PHONES REMOTE FUNCTION UP R DOWN L Hi Fi MICRO COMPONENT SYSTEM VOLUME QX 3700 QX 3700 QX 3700 QX 3700 QX 3700 Mini Hi Fi Micro Component System SERVICE MANUAL All manuals and user guides at all guides com ...

Page 3: ...the constant improvement of product Contents I Safety instructions 2 II Specifications 3 III Level List of Equipments Instruments Required for Production 6 IV Block diagram 7 V Wiring diagram 8 VI Schematic Diagram 9 VII Component Diagrams 10 VIII Exploded Diagram View and Parts List 18 All manuals and user guides at all guides com ...

Page 4: ...or protecting the appliance from being damaged rated load while is printed on the appliance or is explained in opera tion instruction that should be connected to the speaker out put of the appliance Never short circuit the speaker output of the appliance when the appliance is working 16 Object and Liquid Entry Care should be taken so that objects do not fall and liquids are not spilled into the en...

Page 5: ...AS IHF T 200 b EXCEPT AS OTHERWISE SPECIFIED HEREIN ALL TESTS SHALL BE MEASURED AT FRONT CHANNELS AND SET THE SELECTOR POSITION c MODULATION OF FM DODE 75KHz DEVIATION AUDIO 1KHz 75 OHM d MODULATION OF FM STEREO MPX 67 5KHz DEVIATION 7 5KHz PILOT AUDIO 1 KHz e MODULATION OF MW 30 MOD AUDIO 1KHz f REF OUTPUT LINE OUT Specifications 1 FM Section FM Electrical Specifications Text Point at Line Out Me...

Page 6: ...vel ratio of modulation OFF to ON AUTO STOP 20mV M Center Adjust Minimum input level of Auto Stop SENSITIVITY Auto Stop Sensitivity threshold 5 0mV M OUTPUT LEVEL 150 500MVrms Center 10mV M Measure both channel test point at Line Out 3 VCD Section VCD Measurement Condition Measurement Point At line out or video out 1 Electrical Specifications No Test Item Unit Specification 1 Video Output Level Vp...

Page 7: ...req Level Level Power Output 15 3W SP out Line 1kHz Adjust Adjust MAX Both channel drive front THD 2 4 load Distortion Less than 2 SP out Line 1kHz Adjust 12W MAX Both channel drive 4 load read best value when indicator of distortion meter is changing Line Input 200 50mV SP out Line 1kHz Adjust Adjust MAX Sensitivity THD 2 S N 65dB SP out Line 4 7k 5W MAX Terminate Channel more than 30dB SP out Li...

Page 8: ... 7 0 dB 3 0dB NO Designation Requirement Reference Model Remark 1 Standard signal EXT MOD Input LEADER 3216 1 set Generator Modulation AM 0 60 FM 0 99 9KHz Frequency 0 1 140MHz Level 20 120dBu Output 1 50W 2 AC voltmeter Inter Resistance 1M 10MW KENWOOD V7 171 2 set 3 Automatic VP7702C 1 set Distortion Meter 4 CD Player NF3346A 1 set Evaluation Filter 5 Multiplex Signal KIKU SUI 3400S 1 set Genera...

Page 9: ...VFD 5V DG REM TU SW STB CLK DI DO PT16311 SW VOL VOL MUTE STAN MENU AG 12V DATA AUX L R TUNER T 933 2 FM AM L G R TUN CE DI DO CLK VCD MEPEG DECODER L G R V G DO STB CLK DG REM 8V DG 5V VIDEO OUT V2 V1 AUDIO OUT PT2314 SYSTEM CONNECTION 78E54 L R DO DI CLK CE 22V 22V 21V F1 F2 0V MUTE LEVEL STAN MENU AC10V AC17V 0V AC17V AC3V5 AC3V5 0V AC17V AC220V AC220V AC12V AC12V AC10V IV Block diagram 7 All m...

Page 10: ...V Wiring diagram 8 All manuals and user guides at all guides com ...

Page 11: ...7 R100 22K R3 22K C104 330P R104 24K W104 P104 C105 330P R105 24K R102 1K R103 1K C102 47u C103 47u P503 W503 R512 4K7X8 R513 4K7X8 VD500 IN4148 C503 10U C506 104 R509 22K V503 C9014 V502 C9014 R564 22K R560 33K N502A JRC4558 N502B JRC4558 R561 22K N400B JRC4558 B N400A JRC4558 A R220 150 K202 R222 18 R210 100 R205 100 K200 R209 100 K201 R204 100 V201 C9014 V202 C9014 V200 C9014 R206 33K C205 104 ...

Page 12: ...VII Component Diagrams i AMP PCB Component Diagram 10 All manuals and user guides at all guides com ...

Page 13: ...ii AMP CONTROL PCB Component Diagram 11 All manuals and user guides at all guides com ...

Page 14: ...iii AMP OUTPUT PCB Component Diagram 12 All manuals and user guides at all guides com ...

Page 15: ... 13 iv CONNECTIVE PCB Component Diagram All manuals and user guides at all guides com ...

Page 16: ...v CPU CONTROL PCB Component Diagram 14 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 17: ... 15 vi VCD CONTROL PCB Component Diagram All manuals and user guides at all guides com ...

Page 18: ... 16 vii AUDIO VIDEO OUTPUT PCB Component Diagram All manuals and user guides at all guides com ...

Page 19: ... 17 viii REMOTE HANDSET PCB Component Diagram All manuals and user guides at all guides com ...

Page 20: ... 18 VIII Exploded Diagram View and Parts List A VCD exploded All manuals and user guides at all guides com ...

Page 21: ... 322 AA0801 01 SPOG SPR 6 12 E7801 013007 OUTPUT PCB ASSY 1 13 402 AA0903 05 REAR COVER 1 14 E7801 013009 TUNER PCB ASSY 1 15 E7801 013008 MPEG PCB ASSY 1 16 530 V58001 01 FIBER PAPER WASHER 4 17 401 AA0902 01 TOP CABINET 1 18 429 AA0901 01 BRACKET FOR PCB 2 19 E7801 013005 CPU PCB ASSY 1 20 239 AA0901 07S CD DOOR 1 21 E7706 003001 MECHANISM VCD 1 A 610 200108 10 S TAP SCREW RND 2x8 1 B 610 300108...

Page 22: ... 20 B AMP exploded All manuals and user guides at all guides com ...

Page 23: ... 1 13 367 V58801 01 BSHG RELIEF 1 14 236 AA0811 22S CABINET BACK 1 15 E3404 136001 AC LINE CORD 1 16 384 K58001 02H BACK PLATE 1 17 E7801 013004 CONNECTIVE PCB 1 18 403 AA0803 01 CABINET BOTTOM 1 19 370 AA0802 01 FOOT CSH REAR 2 20 E5102 151001 TRANSFORMER 1 21 269 AA0821 01K LENS RCN FLTR 1 22 370 AA0801 01 FOOT CSH 2 23 401 AA0803 01 CABINET TOP 1 24 389 AA0802 01H PLT SHD PCB 1 A 611 300208 10 ...

Page 24: ...P C B REMOTE BOARD 1 5 473 010101 01 BATT CONTACT SPRING SHEET VE 1 6 472 010101 01 BATT CONTACT PLATE VE 1 7 203 010131 03S REMOTE CABINET BOTTOM 1 8 611 260206 10 SELF TAPPING SCREW K T 2 6x6mm 1 9 474 010101 01 BATT CONTACT SPRING WIRE 1 10 210 010101 03S REMOTE BATTERY COVER VE 1 11 790 010110 11 REMOTE CONTROL HANDSET 43 KEYS 1 11 All manuals and user guides at all guides com ...

Page 25: ...W 5 8 R205 R209 R210 R219 R221 R408 R409 R220 RESISTOR CARBON 150 1 4W 5 1 R214 RESISTOR CARBON 180 1 4W 5 5 R215 R216 R217 R218 R208 RESISTOR CARBON 220 1 4W 5 1 R201 RESISTOR CARBON 560 1 4W 5 2 R203 R200 RESISTOR CARBON 680 1 4W 5 2 R202 R207 RESISTOR CARBON 1K 1 4W 5 3 R405 R406 R404 RESISTOR CARBON 3K3 1 4W 5 2 R407 R400 RESISTOR CARBON 4K7 1 4W 5 2 R402 R212 RESISTOR CARBON 10K 1 4W 5 3 R213...

Page 26: ... 2uF 50V 20 2 C719 C300 CAP H VOLTAGE MKP 0 15K 275V 20 1 iii DIODE TRANSISTOR Location Description QTY VD111 DIODE IN4148 9 VD206 VD207 VD403 VD500 VD600 VD601 VD602 VD603 VD110 DIODE IN4001 2 VD300 VD100 DIODE IN4007 13 VD101 VD102 VD103 VD104 VD105 VD106 VD107 VD108 VD109 VD114 VD115 VD400 VD200 DIODE LED F3 YELLOW 3 VD202 VD204 VD201 DIODE LED F3 GREEN 3 VD203 VD205 VD402 DIODE ZENER 5V1 0 5W ...

Page 27: ... 7 1PCS XS300 JACK SPK WP4 15 1PCS P202 JACK HEADPHONE 7PIN 1PCS RL100 RELAY YL 202 DC12V 1PCS RL300 F100 FUSE F3 15A 250V 1PCS F101 F300 FUSE T4A 250V 1PCS F100 FUSE HOLD 2PAIR F101 F300 FUSE HOLD 1PCS P300 AC LINE CORD 1 8M 1PCS K200 SWITCH TACT 6x6x9 5 10PCS K201 K202 K600 K601 K602 K603 K604 K605 K606 AV LINE RED WHITE YELLOW L 1 2M 1PCS FM ANTENNA 1 8M 1PCS AM ANTENNA 1PCS CONNECTOR WIRE See ...

Page 28: ... Attachment 1 All manuals and user guides at all guides com ...

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