Alto-Mistral6000-pwr-sm 电路图 维修手册.pdf

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1、Service MODEL: MISTRAL 6000 Version 2.0 RadioFans.CN 收音机爱 好者资料库 1 CONTENTS 1. Introduction.2 2. Specification.3 3. Schematic Diagram.4 4. Wiring Diagram.11 5. PCB Layout.13 6. Test Procedure.18 7. Exploded Views & Mechanical Parts List.20 8. BOM.23 RadioFans.CN 收音机爱 好者资料库 2 1. Introduction ALTO MIST

2、RAL amplifiers are series of innovative design power amplifiers. This series work under high stability with great power supply in just 2-rack spaces. Airflow is from back to front panel to keep in a nice air circulation inside the Rack. The automatic fan, which affects the temperature of machine inc

3、ludes various kinds of speed, therefore, this low-noise fan makes a good result in cooling the heat from machines. MISTRAL amplifiers include 2 independent channels with separate protection system and power supply. The independent protection system avoids opening circuit, short, and wrong loading or

4、 over-heating. The special- designed protective system applies automatically restarting functions upon the default status and then goes back to normal. All electronic inputs equip standard power connectors. And all inputs are electronic balanced, with hi-quality transformer, MISTRAL amplifiers provi

5、de an outstanding performance in any conditions. Innovative design and high stability power amplifiers. Fan-cooled AB class high power amplifier in 19”rack, 2Usize Rugged amplifiers in a strong, compact chassis. 2 independent channels with separate protection system and power supply Smart-designed p

6、rotection system for auto re-operation after fault. Auto-adjusting speed fan. 4LEDs for operation/protection, limit, power on and clip High-current toroidal transformer designed for high power at 2Ohms with low noise. Independent DC and thermal overload protection on each channel. IEC standard power

7、 connectors. Binding post and NEUTRIK SPEAKON outputs power connectors. Balanced XLR inputs/ parallel outputs. RadioFans.CN 收音机爱 好者资料库 MODELMISTRAL6000 20Hz 20KHz0.1%THD, Stereo Mode 8 ohms per channel(EIAJ)1070W 4 ohms per channel (EIAJ)1500W Bridge Mono Mode 8 ohms, 1KHz, 0.1% THD (EIAJ)3000W Dist

8、ortion (SMPTE-IM)400 at 8ohms Signal to Noise, 20Hz-20KHz110dB Voltage Gain40 (31dB) Input Sensitivity 4 ohms6Vrms Input Clipping10Vrms (+22dB) Input Impedance10K ohms unbalanced, 20k ohms balanced 56 (36dB) Controls Front: AC switch, CH1 & CH2 Gain Knobs Rear: Limiter, Bridge selector Indications (

9、1 per channel) Power-on blue LED Operation / Protection : Dual color (Green/Red LED) Limit: Red LED Clip: Red LED Connectors, each channel Input: Active balanced XLR Parallel output: XLR Output NEUTRIK Spoken and Binding posts CoolingContinuously variable-speed fan, rear-to front air flow Load Prote

10、ction On / off muting, DC-fault load grounding relay: internal fault fuses Power requirements200-240 (100-120) Vac 5060Hz Dimensions 19” (48.3cm) rack mounting, 5.2” (13.3cm) tall (3 rack spaces) 17.8” (45.3cm) deep (rack mounting to rear support ears) Net Weight26.47Kg 12345678 A B C D 87654321 D C

11、 B A C1_15 C1_16 470uF/160V C1_17 C1_18 C1_19 C1_20 C1_21 C1_22 C1_23 C1_24 C1_25 C1_26 16x470uF/160V R1_25 22R 1W R1_28 0.22 5W R1_29 0.22 5W R1_30 0.22 5W R1_31 0.22 5W Q1_5Q1_6Q1_7Q1_8 D1_9 1N4148 +110V_A D1_15 1N5402 GND1 6x2SA1943 Q1_1 MJE15032 R1_23 2K2 5W R1_24 2K2 5W C1_40 22nF/100V poly C1_

12、13 3.3nF/50 cer C1_14 3.3nF/50 cer R1_62 5R6 1W R1_22 5R6 1W GND1 D1_13 1N4148 Q1_2 MJE15033 D1_14 1N4148 Q1_9Q1_10Q1_11Q1_12 R1_32 22R 1W R1_33 0.22 5W R1_34 0.22 5W R1_35 0.22 5W R1_36 0.22 5W GND1 -110V_A D1_16 1N5402 D1_11 0R D1_12 0R D1_5 1N4936 D1_6 1N4936 C1_11 560pF/50 cer C1_12 N/C D1_7 ZD5

13、V6 1/2W R1_14 820R R1_15 4K7 10W R1_18 820R R1_19 4K7 10W D1_8 ZD5V6 1/2W D1_10 1N4148 V1+ D1_1 ZD15V1.3W C1_8 220uF/25V GND1 D1_2 W2-04 R1_9 100R GND1 V1- C1_7 56pF/50 cer R1_8 10K C1_10 27pF/50 cer R1_11 15KSPEAKERS BUS R1_10 330R C1_9 0R GND1 R1_6 N/C R1_7 N/C GND1 CH1 GAIN C1_6 47uF/35V D1_4 ZD1

14、5V1.3W C1_45 220uF/25V GND1 RB1_1A 4x10K RB1_1B 4x10K C1_3 100pF/50 cer C1_5 47uF/35VRB1_1C 4x10K RB1_1D 4x10K C1_4 100pF/50 cer C1_2 22uF/50V GND1 C1_1 22uF/50V 1 4 2 3 5 6 7 8 9 T1_1 FCT TAUD600 GND1 R1_17 NTC 50R R1_16 TRIMMER 100R R1_20 TRIMMER 1K R1_21 TRIMMER 1K 3 2 1 U1_1A NJM4560L 5 6 7 U1_1

15、B NJM4560L 84 U1_1C NJM4580L V1+ V1- TP1_3 TP1_6 1 2 3 R1_5 3P-2.5 J1_4 3P2.5 J1_5 3P2.5 MIS60-CH1.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 27-Jan-2005 C.C.LIN ALTO MISTRAL6000-CH1 DRIVE 21of MISTRAL6000 VER050127 A2 PCB# MIS6000.PCB 3 2 1 U1_2A NJM4560L 5 6 7 U1_2B NJM4560L GND1

16、 R1_53 8K2 R1_54 10K C1_35 56pF/50 cer 84 U1_2C NJM4580L V1+ V1- CH1 PILOTLIM R1_52 47R D1_24 W2-04 2 1 3S1_1A SW 2C_2P (CH1 LIMITER MODE) GND1 R1_55 330R C1_37 220uF/16V 41 23 U1_5 VTL5C2 GND1 R1_51 100K GND1 C1_36 56pF/50 cer GND1 (FTR VT90N1 VACTEC+) 12 34 56 78 910 JP1_16 HEADER 5X2 R1_57 100R R

17、1_56 82K 1/2W R1_58 68K 1/2W +110V_A -110V_A GND1 12 34 56 78 910 JP1_3 HEADER 5X2 GND1GND1 CH1 INSERT CONNECTOR 21 D1_25 1N4004 V1+ 21 D1_26 1N4004 V1- CH1 INSERT IN CH1 INSERT OUT 2 1 3 J1_2 XLR MALE90 2 1 3 J1_1 XLR FEMALE90 CH1 INPUT GND1 12 34 56 78 910 JP1_15 HEADER 5X2 GND1GND1 5 4 6 S1_1B SW

18、ITCH 2C_2P NORMAL BRIDGED TO USE ONLY CH2 PUT JUMPER ON PIN 6&8 CH1 CLIP+ OUTPUT STAGE_A12 L1_1 2uH 10A 12 R1_39 5R6 2W R1_40 12R 5W R1_41 12R 5W C1_31 68nF/250V poly GND1 K1_1 RELAY VBS SERIES D1_23 1N4004 GND1 CH1 OUTPUT 1 2 JP1_1 CN-PCB6.3 1 2 JP1_2 CN-PCB6.3 1+ 1- GND1 TO SPEAKON PCB CH1 OUTPUT

19、D1_19 W2-04 R1_44 6K8 1W R1_43 100K Q1_16 MPSA92 R1_42 330K Q1_15 MPSA92 D1_17 5mm RED LED R1_46 100K R1_47 47K D1_18 ZD7V5 1/2W Q1_17 MPSA42 R1_48 330K D1_20 1N4004 TURN ON DELAY C1_32 10uF/63 C1_33 47uF/63V R1_45 1K5 C1_34 220uF/16V NP D1_21 ZD36V 1W R1_63 1K5 3W D1_22 1N4004 R1_50 PTC 65R R1_49 1

20、5K 3W +110V_A 100R/10K GND1 CH1 BILED2 RELAY POWER1 CH1 BILED2 CH1 CLIP- CH1 CLIP+ CH1 CLIP- CH1 IN- CH1 IN+ (PARALLEL OUTPUT) -V_FAN_CH1 VAC FAN1-CH1 FAN OUT CH1 VAC FAN2-CH1 1 2 JP1_5 CN-PCB6.3 1 2 JP1_6 CN-PCB6.3 1 2 JP1_9 JEF-505 1 2 JP1_10 JEF-505 RECTIFIER BRIDGE1+ +110V_A COM1 1 2 JP1_7 CN-PC

21、B6.3 1 2 JP1_8 CN-PCB6.3 1 2 JP1_11 JEF-505 1 2 JP1_12 JEF-505 RECTIFIER BRIDGE1- -110V_A AC INPUT 1 2 3 JP1_13 HEADER 3 1 2 3 4 D1_27 W2-04 C1_42 470uF/35V U1_4 LM317T 12 R1_1 1K8 R1_2 0R C1_44 100nF/50 cer C1_43 10uF/63 D1_28 1N4004 1 2 JP1_14 2P2.5 +12V FAN OUTPUT STAGE_A RELAY POWER1 6.3x32 FUSE

22、 HOLDER MISTRAL6000 Schematic Diagram 1 of 2 FUSE1-1 10AT FUSE1-2 10AT R1_3 NTC 500R FAN OUT CH1 -V FAN CH1 VAC FAN1-CH1 VAC FAN2-CH1 ON/PROTECTION (OPTION) CH1 PHOTO COUPLER -15V +15V CH1 BILED1 CH1 BILED1 GND1 R1_64 15K CH1 BRIDGE SWITCH CH2 AMPLIFIER MIS60-CH2.SCH (1 5A 200V) (1.5A 200V) (1.5A 20

23、0V) (1.5A 200V) 6x2SC5200 R1_27 0.22 5W Q2_4 Q1_13 R2_37 0.22 5W C1_28C1_30 C1_27C1_29 R1_13 68R C1_38 1.5nF/250 cer R1_26 0.22 5W Q2_3 Q1_14 R2_38 0.22 5W 12345678 A B C D 87654321 D C B A C2_15 C2_16 470uF/160V C2_17 C2_18 C2_19 C2_20 C2_21 C2_22 C2_23 C2_24 C2_25 C2_26 12x470uF/160V R2_25 22R 1W

24、R2_28 0.22 5W R2_29 0.22 5W R2_30 0.22 5W R2_31 0.22 5W Q2_5Q2_6Q2_7Q2_8 D2_9 1N4148 +110V_B D2_15 1N5402 GND2 6x2SA1943 Q2_1 MJE15032 R2_23 2K2 5W R2_24 2K2 5W C2_40 22nF/100V poly C2_13 3.3nF/50 cer C2_14 3.3nF/50 cer R2_62 5R6 1W R2_22 5R6 1W GND2 D2_13 1N4148 Q2_2 MJE15033 D2_14 1N4148 Q2_9Q2_10

25、Q2_11Q2_12 R2_32 22R 1W R2_33 0.22 5W R2_34 0.22 5W R2_35 0.22 5W R2_36 0.22 5W GND2 -110V_B D2_16 1N5402 D2_11 0R D2_12 0R D2_5 1N4936 D2_6 1N4936 C2_11 560pF/50 cer C2_12 N/C D2_7 ZD5V6 1/2W R2_14 820R R2_15 4K7 10W R2_18 820R R2_19 4K7 10W D2_8 ZD5V6 1/2W D2_10 1N4148 V2+ D2_1 ZD15V1.3W C2_8 220u

26、F/25V GND2 D2_2 W2-04 R2_9 100R GND2 V2- C2_7 56pF/50 cer R2_8 10K C2_10 27pF/50 cer R2_11 15KSPEAKERS BUS R2_10 330R C2_9 0R GND2 R2_6 N/C R2_7 N/C GND2 CH2 GAIN C2_6 47uF/35VD2_4 ZD15V1.3W C2_45 220uF/25V GND2 RB2_1A 4x10K RB2_1B 4x10K C2_3 100pF/50 cer C2_5 47uF/35VRB2_1C 4x10K RB2_1D 4x10K C2_4

27、100pF/50 cer C2_2 22uF/50V GND2 C2_1 22uF/50V 1 4 2 3 5 6 7 8 9 T2_1 FCT TAUD600 GND2 R2_17 NTC 50R R2_16 TRIMMER 100R R2_20 TRIMMER 1K R2_21 TRIMMER 1K 3 2 1 U2_1A NJM4560L 5 6 7 U2_1B NJM4560L 84 U2_1C NJM4580L V2+ V2- TP2_3 TP2_6 1 2 3 R2_5 3P-2.5 J2_4 3P2.5 J2_5 3P2.5 MIS60-CH2-050203.Sch Titel

28、Size File: Date: Drawn By: Sheet RevisionModel No: 3-Feb-2005 C.C.LIN ALTO MISTRAL6000-CH2 DRIVE 21of MISTRAL6000 VER050203 A2 PCB# MIS6000.PCB 3 2 1 U2_2A NJM4560L 5 6 7 U2_2B NJM4560L GND2 R2_53 8K2 R2_54 10K C2_35 56pF/50 cer 84 U2_2C NJM4580L V2+ V2- CH2 PILOTLIM R2_52 47R D2_24 W2-04 2 1 3 S2_1

29、A SW 2C_2P GND2 R2_55 330R C2_37 220uF/16V 41 23 U2_5 VTL5C2 GND2 R2_51 100K GND2 C2_36 56pF/50 cer GND2 (FTR VT90N1 VACTEC+) 12 34 56 78 910 JP2_16 HEADER 5X2 R2_57 100R R2_56 82K 1/2W R2_58 68K 1/2W +110V_B -110V_B GND2 12 34 56 78 910 JP2_3 HEADER 5X2 GND2GND2 CH2 INSERT CONNECTOR 21 D2_25 1N4004

30、 V2+ 21 D2_26 1N4004 V2- CH2 INSERT IN CH2 INSERT OUT 2 1 3 J2_2 XLR MALE90 2 1 3 J2_1 XLR FEMALE90 CH2 INPUT GND2 12 34 56 78 910 JP2_15 HEADER 5X2 GND2GND2 5 4 6 S2_1B SWITCH 2C_2P NORMAL BRIDGED TO USE ONLY CH2 PUT JUMPER ON PIN 6&8 CH2 CLIP+ OUTPUT STAGE_B12 L2_1 2uH 10A 12 R2_39 5R6 2W R2_40 12

31、R 5W R2_41 12R 5W C2_31 68nF/250V poly GND2 K2_1 RELAY VBS SERIES D2_23 1N4004 GND2 CH2 OUTPUT 1 2 JP2_1 CN-PCB6.3 1 2 JP2_2 CN-PCB6.3 2+ 2- GND2 TO SPEAKON PCB CH2 OUTPUT D2_19 W2-04 R2_44 6K8 1W R2_43 100K Q2_16 MPSA92 R2_42 330K Q2_15 MPSA92 D2_17 5mm RED LED R2_46 100K R2_47 47K D2_18 ZD7V5 1/2W

32、 Q2_17 MPSA42 R2_48 330K D2_20 1N4004 TURN ON DELAY C2_32 10uF/63 C2_33 47uF/63V R2_45 1K5 C2_34 220uF/16V NP D2_21 ZD36V 1W R2_63 1K5 3W D2_22 1N4004 R2_50 PTC 65R R2_49 15K 3W +110V_B 100R/10K GND2 CH2 BILED2 RELAY POWER2 CH2 BILED2 CH2 CLIP- CH2 CLIP+ CH2 CLIP- CH2 LIMITER MODE CH2 IN- CH2 IN+ (P

33、ARALLEL OUTPUT) CH2 BRIDGE -V_FAN_CH2 VAC FAN1 CH2 LIMITER MODE FAN OUT CH2 VAC FAN2 1 2 JP2_5 CN-PCB6.3 1 2 JP2_6 CN-PCB6.3 1 2 JP2_9 JEF-505 1 2 JP2_10 JEF-505 RECTIFIER BRIDGE2+ +110V_B COM2 1 2 JP2_7 CN-PCB6.3 1 2 JP2_8 CN-PCB6.3 1 2 JP2_11 JEF-505 1 2 JP2_12 JEF-505 RECTIFIER BRIDGE2- -110V_B A

34、C INPUT 1 2 3 JP2_13 HEADER 3 1 2 3 4 D2_27 W2-04 C2_42 470uF/35V U2_4 LM317T 12 R2_1 1K8 R2_2 0R C2_44 100nF/50 cer C2_43 10uF/63 D2_28 1N4004 1 2 JP2_14 2P2.5 +12V FAN OUTPUT STAGE_B RELAY POWER2 6.3x32 FUSE HOLDER MISTRAL6000 Schematic Diagram 2 of 2 FUSE2-1 10AT FUSE2-2 10AT R2_3 NTC 500R FAN OU

35、T CH2 -V FAN CH2 VAC FAN1 VAC FAN2 ON/PROTECTION (OPTION) CH2 PHOTO COUPLER -15V +15V CH2 BILED1 CH2 BILED1 (1.5A 200V) (1 5A 200V) (1.5A 200V) (1 5A 200V) 6x2SC5200 R2_27 0.22 5W Q2_4 Q2_13 R2_37 0.22 5W C2_28C2_30 C2_27C2_29 R2_13 68R C2_38 1.5nF/250 cer Q2_14 R2_38 0.22 5W R2_26 0.22 5W Q2_3 GND2

36、 050203 modify 050203 modify 1234 A B C D 4321 D C B A R1 0.22 5W R2 0.22 5W Q1Q2 +110V_A Q3Q4 R3 0.22 5W R4 0.22 5W GND1 -110V_A 2x2SA1943 2x2SC5200 1 2 P1 CON2 1 2 P2 CON2 1 2 P3 CON2 1 2 P4 CON2 1 2 P5 CON2 MIS60MN2.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 27-Jan-2005 C.C.LIN

37、ALTO : MISTRAL6000 MAIN2-BOARD 11of MISTRAL6000 VER050127 A2 1234 A B C D 4321 D C B A PJ1 PHONEJACK2 1 2 3 CN1 CON3 1 2 3 CN3 CON3 1 2 3 4 5 CN4 CON5 1 2 3 CN2 CON3 MIS40IN.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 27-Jan-2005 C.C.LIN ALTO : MISTRAL4000 INPUT 11of MISTRAL4000 VER

38、031206 A4 1234 A B C D 4321 D C B A 12 D2_30 3mm YELLOW LED 12 D2_3 3mm RED LED 12 D2_29 3mm BLUE LED 12 34 56 78 910 JP2_22 HEADER 5X2 LIMITER CLIP ON/PROTECTION RED GREEN 1 1 2 2 D2_1 3mm R/G BLCOL LED POWER ON 12 D1_30 3mm YELLOW LED 12 D1_3 3mm RED LED 12 D1_29 3mm BLUE LED 12 34 56 78 910 JP1_2

39、2 HEADER 5X2 LIMITER CLIP ON/PROTECTION RED GREEN 1 1 2 2 D1_1 3mm R/G BLCOL LED POWER ON VR1_1 B50K VR2_1 B50K 1 2 3 CN1_1 3P2.5 1 2 3 CN2_1 3P2.5 MIS40FP.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 9-Apr-2004 C.C.LIN ALTO : MISTRAL4000 FP 11of MISTRAL4000 VER030710 A4 1234 A B C D

40、 4321 D C B A 1+ 1- 2+ 2- SPK1 SPEAKON BR POS BR_NEG 1+ 1- 2+ 2- SPK2 SPEAKON BR POS BR_NEG JP1 SP1 JP2 GND1 JP3 OUT2 JP4 GND2 JP5 SP1 JP6 SP1 JP7 SP1 JP8 SP1 MIS60SP.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 27-Jan-2005 C.C.LIN ALTO : MISTRAL6000 SP-BOARD 11of MISTRAL6000 VER0501

41、27 A2 1234 A B C D 4321 D C B A R2_67 NTC NP35L R2_68 NTC NP35L R2_73 2K7 10W R2_74 2K7 10W D2_31 1N4004 12 C2_46 470uF/50V POWER SWITCH 1. COMPONENTS WITHARE SAFETY CRITICAL PARTS. 100V 100V 0V 100V 100V 0V 13.5V 0V 115V or 120V 115V or 120V 0V 0V T130 T130 PT-MIS6000-E 1 2 P1 CN-PCB6.3 1 2 P2 CN-P

42、CB6.3 1 2 P8 CN-PCB6.3 1 2 P3 CN-PCB6.3 1 2 P4 CN-PCB6.3 1 2 P7 CN-PCB6.3 1 2 P5 CN-PCB6.3 1 2 P6 CN-PCB6.3 TRANS-IN TRANS-IN NEUTRAL SWITCH BD1 35A/200V BD2 35A/200V COM1 COM2 BRIDGE1+ BRIDGE1- BRIDGE2+ BRIDGE2- AC_1(AC_2) COM MIS60PWR.Sch Titel Size File: Date: Drawn By: Sheet RevisionModel No: 1-

43、Feb-2005 C.C.LIN ALTO MISTRAL6000 POWER BOARD 11of MISTRAL6000 VER050201 A4 PCB# MIS40PWR.PCB NEUTRAL 1 2 P9 L NE 1 2 P10 NEUT 1 2 P11 GND 1 2 P12 CN-PCB6.3 1 2 1 2 1 2 P16 CN-PCB6.3 1 2 P15 CN-PCB6.3 115V/25A 230V/18A BREAKER 12 3 45 K2_2 832A-1A-C 12345678 A B C D 87654321 D C B A MISTRAL6000 Chas

44、sis Wiring Drawing (100V-120V) JP2_1 JP2_2 JP2_13 JP2_14 JP2_7 R2_5 JP2_5 JP2_6 JP2_8 JP1_5 JP1_6 JP1_8 JP1_1 JP1_2 JP1_13 JP1_14 JP1_7 R1_5 OUT1GND1OUT2GND2 P2 P1 P3 P4 P5 P6 P16 AC AC AC AC (COM2) P9 PT-MIS6000-E (BRIDGE+) (AC_2) (COM1) (BRIDGE+) (AC_1) (GND1) (CH1_OUT) (GND2) (CH2_OUT) CN1_1CN2_1

45、 JP1_16JP2_16 JP1_22JP2_22 RED BLACK YELLOW WHITE WHITE WHITE RED GREEN PURPLE PURPLE BLACK BLUE GRAY GRAY HA01258 HA02471 HA01239 HA01237 HA02469 HA02470 HA02451 HA03444 HA01241x4 HA01244 HA02488 HA01198 HA02449 HA03431 OUT1GND1OUT2GND2 WHITE GRAY HA03433 HA03432 WHITE GRAY HA03433 HA03432 HA03442

46、P11P10 P15P8P7 P12 12345678 A B C D 87654321 D C B A MISTRAL6000 Chassis Wiring Drawing (220V-240V) JP2_1 JP2_2 JP2_13 JP2_14 JP2_7 R2_5 JP2_5 JP2_6 JP2_8 JP1_5 JP1_6 JP1_8 JP1_1 JP1_2 JP1_13 JP1_14 JP1_7 R1_5 OUT1GND1OUT2GND2 P2 P1 P3 P4 P5 P6 P16 AC AC AC AC (COM2) P9 PT-MIS6000-E (BRIDGE+) (AC_2)

47、 (COM1) (BRIDGE+) (AC_1) (GND1) (CH1_OUT) (GND2) (CH2_OUT) CN1_1CN2_1 JP1_16JP2_16 JP1_22JP2_22 RED BLACK YELLOW WHITE WHITE WHITE RED GREEN PURPLE PURPLE BLACK BLUE GRAY GRAY HA01258 HA02471 HA01239 HA01237 HA02469 HA02470 HA02451 HA03444 HA01241x4 HA01244 HA02488 HA01198 HA02449 HA03431 OUT1GND1OU

48、T2GND2 WHITE GRAY HA03433 HA03432 WHITE GRAY HA03433 HA03432 HA03442 P11P10 P15P8P7 P12 6. Test Procedure The semi-finished product test procedure 6.1Test Instruments 1. Power supply 2. Digital voltage meter 3. AP (Audio precision) 4. Oscilloscope 5. Two 8(400W) resistors 6.2 Test procedures and spe

49、cification a. Set LIMITER and BRIDGE switches at the position of OFF, turn the VRs of CH1 and CH2 to maximum, then turn on the power switch, the power LED will be illuminated (blue), OPERATING/PROTECTION LED is illuminated to be red at first, then become green after 2-5 seconds, the fan will be running. When you use the solder gun to test the position of R1-3 (R2-3), the fan should be accelerated. b.Without any signal input, adjust R1-20, R1-21 (R2-