Classe-SSP75-sur-sm维修电路原理图.pdf
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1、SSP-75 Class PREAMPLIFIER / PROCESSOR SERVICE MANUAL v 1.0 RadioFans.CN 收音机爱 好者资料库 Index Mechanical Assembly3 PC Boards12 Testing Procedures18 Diagrams21 RadioFans.CN 收音机爱 好者资料库 SSP-75 MECHANICAL ASSEMBLY 1 MS-2347 PHILIPS 2 L273XR01 3 L274XR03 SSP-75 FACE PLATE ASSEMBLY) Class - 4 DIGITALDIGITAL ST
2、ANDBYSTANDBY MODEMODE MEMORYMEMORY DIGITALDIGITALI/P SOURCEI/P SOURCE DTSDTS DOLBY DIGITALDOLBY DIGITAL DOLBY PRO-LOGICDOLBY PRO-LOGIC CLIPCLIP MUTEMUTE 3 2 1 FACE PLATE ASSEMBLY) 1 N-4K 2 SDB161PVB20F 3 Flat Washer 4 Nut 5 L273XR01 6 6-32 x 1/4 SHSS 7 L214XR01-S Class - 5 SSP-75 1 3 4 2 5 6 7 TOP V
3、IEW CHASSIS REAR VIEW 1 D501-J12-S2-15-DQ 2 Jack 3 4-40 x 3/8 BHCS 4 Balanced 5 4-40 x 3/8 BHCS 6 N-1K 7 656-042 8 EAC-333 9 6-32 x 3/8 BHCS Class - 6 SSP-75 2 3 1 9 8 6 7 4 5 CHASSIS REAR VIEW 1 Jack 2 4-40 x 3/8 BHCS 3 Jack 4 Standoff 5 Jack 6 4-40 x 3/8 BHCS 7 Jack 8 4-40 x 3/8 BHCS Class - 7 SSP
4、-75 5 6 7 8 1 2 3 4 CHASSIS REAR VIEW 1 Jack 2 4-40 x 3/8 BHCS 3 NC3MAH2 4 4-40 x 3/8 BHCS 5 4-40 x 3/8 BHCS 6 Toslink Connector Class - 8 SSP-75 3 4 1 2 6 5 CHASSIS 1 PLA CAPFR1 2 HDW #8 FLAT WASHER 3 BZO 8-32x3/4” BHCS 4 L271XR03 Class - 9 1 2 3 SSP-75 4 TOP VIEW Class - 10 PARTIAL ASSY 1 AVR BO51
5、XR02 2 AVR BO50XR03 3 AVR BO1CXR00 4 TRANSFORMER SSP-75 TOP VIEW SHIPPING AREA - FINAL ASSY 1 L272XR01 2 MPF-0605-100-BO Class - 11 SSP-75 MODEL CP-35 DIGITALDIGITAL STANDBYSTANDBY MODEMODE MEMORYMEMORY DIGITALDIGITALI/P SOURCEI/P SOURCE DTSDTS DOLBY DIGITALDOLBY DIGITAL DOLBY PRO-LOGICDOLBY PRO-LOG
6、IC CLIPCLIP DIGITALDIGITAL STANDBYSTANDBY MODEMODE MEMORYMEMORY DIGITALDIGITALI/P SOURCEI/P SOURCE DTSDTS DOLBY DIGITALDOLBY DIGITAL DOLBY PRO-LOGICDOLBY PRO-LOGIC CLIPCLIP MUTEMUTE 2 1 SSP-75 PC BOARDS B27BXR02 ADD ON Class - 13 SSP-75 B272XR03 TOP PCB Class - 14 SSP-75 Class - 15 B275XR01 POWER SU
7、PPLY SSP-75 Class - 16 B276XR02 FRONT PCB SSP-75 Class - 17 B27AXR00 IR SSP-75 SSP-75 TESTING PROCEDURES Class - 19 SSP-75 ST ART - UP 1-check all wires and components 2-Check screws and bolts 3-Connect the jumpers for 120 Volts 4-Turn the bias all the way to 0 volts 5-Connect the unit in bypass mod
8、e 6-Connect the unit with variable transformer 7-Connect speaker cables, regular and balanced inputs 8-Apply 10V AC from variable transformer and check the rail and driver voltages 9-If the unit is OK increase the voltage up to 120V 10-Turn off the unit and remove by pass 11-Turn on the unit and che
9、ck the rails driver and offset 12-Check the sequence of relay clicking 13-Adjust the bias and offset 14-Check the protection circuit both channels 15-Check the signal with 8 and 4 load in 16-Regular, regular mono, balanced stereo and balanced mono 17-Check noise with small speaker and RCA shorted pl
10、ug 18-Put in burning bench SSP-75 FINAL TEST Class - 20 1. Before final test unit was 4 days on burn-in-bench with music. 2. Take the unit from burn-in-bench to Q.C and play it immediately. Keep the line 120V A.C. 3. Check physically and check the components. -check all capacitor and devices directi
11、on. Capacitor stand up right way i.e. check co- solder. -check any missing parts. -check all fuse sockets. -check main board tight up with screw and washer. -check any screw missing. -check balance lock working smoothly. -check all output transistors position with pad. -check main transistors positi
12、on with pad. -check main transformer tight very well. 4. Adjust bias 26mV for every output devices for both channels. Wait 7 to 8 minutes after each adjustment. Also adjust offset to 0mV. 5. Measure rail and pre-driver voltage. 6. Measure A.C voltage for bridge. 7. Measure supply voltage for relays.
13、 +15V and 15V for both channels. +12V and 12V. 8. Measure reference voltage 8.1V on both channels. 9. Measure reference voltage for protection 78V. 10. After setting the bias, connect load and input signal. Check output signal. Check phase with input signal. 11. Measure frequency response, slew rate
14、, gain, signal to noise ratio. 12. Check the output signal from 20Hz to 20KH with load in following combination. Also measure the output power. Regegur-stereo Balance-stereo Regegur-mono Balance-mono 13. Check phone-jack. 14. Check protection on both channels. 15. Check noise with speaker. 16. Put t
15、he jumpers and varistor for required A.C voltage. 17. Plug unit again and check rail and pre-driver voltage. SSP-75 DIAGRAMS POWER SUPPLY Class - 22 SSP-75 +5D 1 2 3 4 5 6 X5 0.156 6Pin PCB header with friction lock 1 2 3 4 5 6 X4 0.156 6Pin PCB header with friction lock +12V + - RECT2 SB601 C22 100
16、00uF C23 10000uF C24 100nF C25 100nF C19 10000uF C18 10000uF C20 100nF C21 100nF + - RECT4 SB601 C8 100nF C9 100nF C17 100nF C16 100nF + - RECT3 SB601 C14 100nF C6 100nF C7 100nF C15 100nF R4 10k R5 10k R3 10k R2 10k C34 1000uFC29 100nF R7 10k C35 1000uFC28 100nF R6 10k Vin 1 GND 2 Vout 3 IC2 7812CV
17、 Vin 1 GND 2 Vout 3 IC1 7805CV L1 DSS706-351D221M25-50 L2 DSS706-351D221M25-50 C32 100nF C27 10000uF C4 100nF C5 100nF C13 100nF C12 100nF + - RECT1 SB601 C30 100nF C26 10000uF C10 100nF C2 100nF C3 100nF C11 100nF C31 100nF C33 100nF 1 2 3 4 5 6 7 8 9 10 X3 0.156 10pin PCB header 1 2 3 4 5 6 X2 5mm
18、 pitch PCB terminal block FUSE4 1A SLOW FUSE5 500mA SLOW FUSE2 500mA SLOW FUSE7 1A SLOW FUSE6 2A SLOW FUSE1 500mA SLOW 12 34 SUPP1 PLH11C1811R2P01B1 R1 100 C1 100nF FUSE3 1A SLOW HS2 Thermalloy 6392B HS1 Thermalloy 6392B MH1MH2MH4MH3MH6MH5 Shield Shield 1 2 3 X1 Bulgin PX0580PC AUDIO BOARD Class - 2
19、3 SSP-75 5.1 Ch input 51switch.sch Control interface controli.sch Recording outputs recbuf.sch AV Audio input buffers inbuf2.sch Audio input buffers inbuf1.sch Zone2 volume and buffer zone2.sch Analog input buffers anasel.sch Audio1 Audio2 Audio3 Audio4 Audio5 Audio6 Video1 Video2 Video3 Video4 Vide
20、o5 Video6 Mic DSP and Bypass dsp.sch Analog audio in Digital audio in 5.1 ch. audio out DSP MODULE Zone 1 Zone 2 Serial Control Serial Control Main output buffers and muting mainout.sch Rec out1 Video 6 Out Rec out2 Zone 2 Out Left Right Left surround Right surround Center Sub 1 Sub 2 Volume Control
21、 From Control board Fixed out Power supplies power.sch +-15V +-5V +5 Digital Digital ground Analog ground +15A -15A +5A -5A Right Left Right Left Center Sub Surround Surround 5.1 CHANNEL Class - 24 SSP-75 C51 100uF C24 100uF C50 100uF C68 100uF C25 100uF C69 100uF 13 11 9 4 6 8 116 RE5 TTi TRS-05D-S
22、B-L D6BAS16 C165100nF EXT51_SEL 32 Q13 BC848B R142 1k C103 100nF DSP_LEFT DSP_RIGHT 13 11 9 4 6 8 116 RE6 TTi TRS-05D-SB-L D7BAS16 C166100nF 32 Q14 BC848B R143 1k C104 100nF DSP_SRND_LEFT DSP_SRND_RIGHT 13 11 9 4 6 8 116 RE7 TTi TRS-05D-SB-L D8BAS16 C167100nF 32 Q15 BC848B R144 1k C102 100nF DSP_CEN
23、TER DSP_SUBWOOFER LEFT_SWITCHED RIGHT_SWITCHED SRND_LEFT_SWITCHED SRND_RIGHT_SWITCHED CENTER_SWITCHED SUBWOOFER_SWITCHED 3 5 6 2 4 1 X4 HSP-214V REC_OUT_L REC_OUT_R C5 10nF C6 10nF SHIELD SHIELD 3 5 6 2 4 1 X5 HSP-214V C9 10nF C10 10nF SHIELD SHIELD Front In Surround In Center In Sub In Rec out 34 5
24、6 78 910 1112 1413 12 1516 1817 1920 21 23 25 22 24 26 2728 2930 3132 X13 DIN41612 1/2 Q Body PCB plug EXT51_VOL EXT51_GPIO1EXT51_GPIO2 EXT51_MUTE +5D +5A-5A +15A-15A DSP_SCLK DSP_MOSI External 5.1 ch volume board connector EXT51_SEL EXT51_SEL RELAY_POWER RELAY_POWER RELAY_POWER CONTROL INTERFACE Cl
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