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Lab.gruppen LAB 1300, Service Manual, Page: 15 / 23

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Lab.gruppen LAB 1300 Service Manual Download Page 15

Summary of Contents for LAB 1300

Page 1: ...SS 1300 LAB 1300 SERVICEMANUAL LAB GRUPPEN Andersson Bavholm AB Gullregnsvagen 16 S 434 44 KUNGSBACKA SWEDEN Tel 46 300 168 23 Fax 46 300 142 46...

Page 2: ...RU...

Page 3: ......

Page 4: ...0 kOhms 0 25 W 150 kOhms 220 kOhms NTC Capacitators Cl C2 C3 C4 C5 C6 C7 C8 C9 CIO Cll Cl 2 C13 C14 C17 j C18 C109 C110 Cl 9 C20 C21 C22 C23 C26 SSI 300 C27 SSI 300 C26 Labi300 C27 Labi300 Transistors...

Page 5: ...1000 SS 1300 LAB 1500 RA RH RI 1 5Kohm 1 RB RC 15 Kohm RD 270 Kohm RF RG 27 Kohm R2 R3 Should be removed RIO Change to 10 Kohm 1 0 7W CA 4 7uF 50V OBS Only LAB 1500 QC BC 547 QD QE BC 557 UA VTC5C4 V...

Page 6: ...R10...

Page 7: ...R 8 lab gruppen LAB 13QQC POWER AMPLIFIER LED DISPLAY irw coai S3C3C9C3 LAB 130QC POWER AMPLIFIER INPUT BUFFER FAN SPEED CONTROL...

Page 8: ......

Page 9: ...SS 1300 LAB 1300 POWER AMPLIFIER LED DISPLAY...

Page 10: ...50V 150 pF ker 47 uP 25 V 15V Zener 0 4 W LF 353 or TL 072 4 7 lcOhms log pot 2 67kohms 1 23dB LED display R112 R113 R114 R115 R116 R117 R119 R120 R121 R122 R123 R124 R125 R126 R128 R129 R118 C108 D1...

Page 11: ......

Page 12: ...SPEED CONTROL...

Page 13: ......

Page 14: ...2PI 1000 BYT 30P 3OO D9 DIO 017 IN 5818 BZW 06P15B Misee11aneous Capacitators Cl C4 0 22 uF 250 V RIFA PME 271 C2 C3 4 7 nF 250 V RIFA PME 265 C6A C6D C7 C14 220 nF 385 V 390 pF ker C8 CIO C9 Cl 2 10...

Page 15: ......

Page 16: ...KUNGSBACKfi SUEDEN...

Page 17: ...2 nF Y DRV 2 7mH 8A 220V C3X 2 2 nF Y DR2X 2 7mH 8A 220V C4 0 22 pF X C5X 2 2 nF Y C6X 2 2 nF Y x 110V AC C7 100 pF 50V C8a 220 pF 385V R5 22 Q 9W C9a 220 pF 385V C2 4 7 nF Y C8bx C3 4 7 nF Y C9bx C5...

Page 18: ...2 330 pF R15 15 kQ 1 C13 10 nF from 931101 R16 180 Q C14 10 nF R17 220 kQ 1 Cl 5 330 pF R22 4 7 Q long legs Cl 6 1 nF R23 6 8 kQ R18 4 7 kQ 1 Cl 7 10 nF R30 30 kQ 1 R19 4 7 kQ 1 Cl 8 1 nF R20 432 kQ 1...

Page 19: ...8 82 a 33 n 33 Q R30 22 KQ 1 30 KQ 1 30 KQ 1 R32 50 KQ 1 36 5 KQ 1 36 5 KQ 1 Rectifier board PSUA LAB 1200 LAB 1300C LAB 2000C R8 4 7 KQ 1 on leg 4 7 KQ 1 on leg 47 KQ 1 R9 470 KQ 470 KQ 390 KQ RIO No...

Page 20: ...the power supply 1 Please contact the Manufacturer to get more information before you do any service of the power supply 2 All warranty service is done exclusively by tho Manufacturer 3 Bearing perso...

Page 21: ...and emitter Turn TP3 slowly until a pulse is visible on the scope The frequency is approx 27 kHz If the graph is seen go to item 10 If only narrow spikes is seen check the following components a D13...

Page 22: ...ative Someone of the transistors Q22 Q32 Q37 is broken If the voltage is below 20mV The output circuits are probably ok In that case go further to item 7 6 To determine which output transistor s which...

Page 23: ...AC Short the output by a resistor 0 3 0 50 5W Check symetry of the shortcircuitvoltage across the 0 3D resistor by the scope 9 Service in driver circuits a Desolder R12 R24 and R25 b Connect a resisto...

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