Arcam-AVP700-avr-sm维修电路原理图.pdf
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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 收音机爱 好者资料库 AVP
6、700 SURROUND 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 screw
7、s M 4.0 x 6.0 ( 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 收音机爱 好者资料库 AVP700 SURROUND SOUND PROCESSOR - 2 - 3 - AVP700 SURROUND SOUND PROCESSOR ADJUSTMENT POINTS DIAGRAM TUNER board OSCRF VT VIDEO
8、 board AVP700 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
9、AC VOLTMETER 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
10、FM STEREO GENERATOR P-901 DC MILLIVOLT METER UNIT UNIT UNIT UNIT 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-inductive
11、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- meter
12、 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 on
13、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- rati
14、on 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 pointAdjust
15、 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 for 15
16、22kHz 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 AVP700 SURROUND SOUND PROCESSOR - 6 - 7 - AVP700 SURROUND S
17、OUND 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-bar UL NTSC / CE
18、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. AVP700 SURROUND SOUND PROCESSOR - 6 - 7 - AVP700 SURROUND SOUND PROCESSOR IMPORTANT NOTES 1.
19、 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, the 9K/10KHz switch should be
20、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 CPU P89C669 can be upgraded v
21、ia 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 seconds. Front panel will then disp
22、lay 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 the appropriate COM Port and c
23、lick 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. AVP700 SURROUND SOUND PROCESSOR - 8 - 9 - AVP700 SURROUND SOUND PROCESSOR 5. Upgrade DSP software DSP code i
24、n 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 and FM Mute/Mono for 3 sec- onds. Front pa
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