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1、SERVICE MANUAL AVP700 SURROUND SOUND PROCESSOR CONTENTS Page DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 ADJUSTMENT POINTS DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 INSTRUMENT SETUP
2、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 ALIGNMENT PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3、. . . . . . . . . . . . . . . . . 7-9 WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-27 SCHEMATIC DIA
4、GRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-39 IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-55 ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5、. . . . . . . . . . . . . . . . 56-95 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97-100 RadioFans.CN AVP700 SURROUN
6、D SOUND PROCESSOR - 2 - 3 - AVP700 SURROUND SOUND PROCESSOR DISASSEMBLY INSTRUCTIONS 7 6 5 1 3 2 4 9 8 8 2. Pull both sides of the TOP COVER slightly outwards 8 and tilt approx. 35 and then remove in the direction as indicated by the arrow 9 . Refer to Figure No.2. 1. Remove machine screws M 4.0 x 6
7、.0 ( 1 to 6 ) from the side panels. Remove tapping screw 3.0 x 8.5 ( 7 )from the back panel. Refer to Figure No.1. Figure No.1 Figure No.2 RadioFans.CN AVP700 SURROUND SOUND PROCESSOR - 2 - 3 - AVP700 SURROUND SOUND PROCESSOR ADJUSTMENT POINTS DIAGRAM TUNER board OSCRF VT VIDEO board RadioFans.CN AV
8、P700 SURROUND SOUND PROCESSOR - 4 - 5 - AVP700 SURROUND SOUND PROCESSOR INSTRUMENT SETUP 1. FM MEASUREMENT Fig. 1 Fig. 2 2. RDS MEASUREMENT Fig. 3 3. AM MEASUREMENT Fig. 4 FM SIGNAL GENERATOR ANTENNA TERMINAL OUTPUT TERMINAL DISTORTION ANALYZER DISTORTION ANALYZER AC VOLTMETER OSCILLOSCOPE AC VOLTME
9、TER OR OSCILLOSCOPE AC VOLTMETER OR OSCILLOSCOPE OUTPUT TERMINAL OUTPUT TERMINAL L R ANTENNA TERMINAL ANTENNA TERMINAL ANTENNA TERMINAL AM LOOP ANTENNA (Accessory) AM LOOP ANTENNA 60cm DIGITAL MILLIVOLT METER VT-J954 FM SIGNAL GENERATOR AM SIGNAL GENERATOR FM SIGNAL GENERATOR RDS GENERATOR FM STEREO
10、 GENERATOR P-901 DC MILLIVOLT METER UNIT UNIT UNIT UNIT RadioFans.CN AVP700 SURROUND SOUND PROCESSOR - 4 - 5 - AVP700 SURROUND SOUND PROCESSOR FM/RDS SECTION - FM mono: 1kHz, 75kHz devi., 60dB/V - FM stereo: 1kHz, 67.5kHz devi., 60dB/V Pilot signal 19kHz 7.5kHz devi. OUTPUTS - Connect the non-induct
11、ive type resistor of 8 ohms to the all speaker terminals unless otherwise noted. ItemStep Connec- tion of instru- ment FM SG output Stereo modula- tor output Tuning frequency Output indicator Adjustment point Adjust forRemarks FM IF/RF 1 Fig.1 99.0MHz 1kHz 75kHz devi. 66dBf (60dB) 99.0MHz DC volt- m
12、eter L9410100mVFM MUTE/MODE switch: ON/AUTO Repeat the steps 1 to 3 until no further adjustment is neces- sary. 2 AC volt- meter IFT on the front end Maximum 3 Distortion analyzer L942Minimum Stereo Distor- tion Fig.2 99.0MHz Ext. mod. 66dBf (60dB) Channel L or R 1kHz 99.0MHz Distortion analyzer IFT
13、 on the front end Minimum FM MUTE/MODE switch: ON/AUTO. Dont turn more than +/-180. Stereo Sepa- ration Fig.2 99.0MHz Ext. mod. 66dBf (60dB) Channel L or R 1kHz 99.0MHz Oscillo- scope R956 Maximum Separa- tion Repeat stereo distortion and stereo separation align- ment until THD at minimum and sepa-
14、ration at maximum. Muting Level Fig.199.0MHz 22dB99.0MHz Oscillo- scope R941 Signal output RDSFig.3 99.0MHz Ext. mod. 66dBf (60dB) RDS 4% MOD 99.0MHz Decode the RDS Program Station. AM SECTION AM Modulation: 400Hz, 30% For UL Version StepAM SG outputTuning frequencyOutput indicatorAdjustment pointAd
15、just for 1530kHzDigital DC voltmeterQSC coil on RF block M9711.350.2V 2 600kHz 400Hz 30% mod. 60dB/M 600kHzAC voltmeterRF coil on RF block M971Maximum 3 600kHz 400Hz 30% mod. 60dB/M 990kHzAC voltmeterL972Maximum For CE Version StepAM SG outputTuning frequencyOutput indicatorAdjustment pointAdjust fo
16、r 1522kHz or 531kHzDigital DC voltmeterQSC coil on RF block M9711.350.2V (531kHz) 2 600kHz 400Hz 30% mod. 60dB/M 603kHzAC voltmeterRF coil on RF block M971Maximum 3 600kHz 400Hz 30% mod. 60dB/M 999kHzAC voltmeterL972Maximum ALIGNMENT PROCEDURES RadioFans.CN AVP700 SURROUND SOUND PROCESSOR - 6 - 7 -
17、AVP700 SURROUND SOUND PROCESSOR VIDEO BOARD SECTION 1 Required measurement equipment : 100KHz Scope, DVD player DVD test disc : TDV-540A 2 Connect the DVD Player into AVP700 composite Video IN; connect the component Video to TV (or connect 75 ohm loading resistor). 3 Play TDV-540A T2-C1 (75% colour-
18、bar UL NTSC / CE PAL). 4 Turn RV803 to adjust the component video Y voltage to 100075mV. 5 Turn RV804 to adjust the component video Cb voltage to 550mV30mV. 6 Turn RV805 to adjust the component video Cr voltage to 600mV30mV. RadioFans.CN AVP700 SURROUND SOUND PROCESSOR - 6 - 7 - AVP700 SURROUND SOUN
19、D PROCESSOR IMPORTANT NOTES 1. Show the software version Press “DVD” and “SAT” at the same time. 2. Light up all the icon on the VFL Press “CD” and “TAPE” at the same time. 3. Reset Press “FM MUTE” and “PRESET/TUNE” at the same time. When VFL shows “Resetl1 REQ?”, press “OK” button. For CE version,
20、the 9K/10KHz switch should be set to 9KHz and the voltage should be 230V AC. For UL version, the 9K/10KHz switch should be set to 10KHz and the voltage should be 115V AC. The 4/8 ohm switch should be set in 4ohm position in all version. Ground-SW: GROUND. 4. Upgrade MCU software The software of main
21、 CPU P89C669 can be upgraded via RS232. The programming steps are as follows: Connect the AVP700 to the computer. On AVP700, press the buttons RDS INFO and STORE at the same time. Then the front panel should display Program Req.:. Then press OK button. Or you can press RDS INFO and STORE for 3 secon
22、ds. Front panel will then display Program. The AVP700 is ready to be programmed. Note: when the program process is stopped unexpectedly, the program in IC may be erased. You can press these two buttons for 3 seconds for programming. Run the AVP700test.exe and click the button Program to CPU. Select
23、the appropriate COM Port and click the “Browse” to load the hex file. Then click the button Program. Upon the upgrade process is completed, a pop window will be shown. Note: Please try it again if there is error response. RadioFans.CN AVP700 SURROUND SOUND PROCESSOR - 8 - 9 - AVP700 SURROUND SOUND P
24、ROCESSOR 5. Upgrade DSP software DSP code in Flash Rom AT29LV040A can be upgraded via RS232. Connect the AVP700 to the computer. On AVP700, press the buttons RDS INFO and FM Mute/Mono at the same time. Then the front panel should display Program Req.:. Then press OK button. Or you can press RDS INFO
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