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Micro-Tech 600 Amplifier Service Manual

Q117 Q217

D 2961-7

2N3859A

Q118 Q218

D 2961-7

2N3859A

Q119 Q219

C 3625-8

2N4125

Q120 Q220

C 3625-8

2N4125

Q121 Q221

C 7458-0

2N4123

Q122 Q222

C 7458-0

2N4123

Q123 Q223

C 7458-0

2N4123

Q124 Q224

C 3625-8

2N4125

RESISTORS

A10265-53621

53.6K

A10266-2402

24 OHM

A10266-2402

24 OHM

A10265-46421

46.4K

A10266-1041

100K

A10266-2031

20K

A10266-5121

5.1K

R16

A10266-5121

5.1K

R17

A10266-2031

20K

R18

A10266-1041

100K

R100

R200

C 7409-3

5K POT

R101

R201

A10265-49911

4.99K

R102

R202

A10266-5111

510 OHM

R103

R203

A10266-1041

100K

R104

R204

A10266-2721

2.7K

R105

R205

A10266-2721

2.7K

R106

R206

A10266-1231

12K

R107

R207

A10266-6831

68K

R108

R208

A10266-8211

820 OHM

R109

R209

A10266-6801

68 OHM

R110

R210

A10266-6831

68K

R111

R211

A10266-1231

12K

R112

R212

A10266-5131

51K

R113

R213

A10266-4721

4.7K

R114

R214

A10266-4721

4.7K

R115

R215

A10266-5141

510K

R116

R216

A10266-2751

2.7M

R117

R217

A10266-4731

47K

R118

R218

A10266-2711

270 OHM

R119

R219

A10266-3011

300 OHM

R120

R220

A10266-2711

270 OHM

R121

R221

C 5062-2

100K Trim

R122

R222

A10266-2741

270K

R123

R223

A10266-1832

18K .5W

R124

R224

A10266-6821

6.8K

R125

R225

C 7782-3

100 OHM

R126

R226

C 7782-3

100 OHM

R127

R227

A10266-6821

6.8K

R128

R228

A10266-1031

10K

R129

R229

A10266-1041

100K

R130

R230

A10266-1041

100K

R131

R231

A10266-1031

10K

R132

R232

C 5062-2

100K Trim

R133

R233

A10266-2741

270K

R134

R234

A10266-1832

18K .5W

R135

R235

C 7782-3

100 OHM

R136

R236

A10266-6821

6.8K

R137

R237

C 7782-3

100 OHM

R138

R238

A10266-6821

6.8K

R139

R239

A10266-8211

820

R140

R240

A10266-6801

68 OHM

R141

R241

A10266-1541

150K

R142

R242

A10266-1541

150K

R143

R243

A10266-1041

100K

R144

R244

A10266-1041

100K

R145

R245

A10266-1851

1.8M

R146

R246

A10266-1031

10K

R147

R247

C 7781-5

200 OHM

R148

R248

A10266-2721

2.7K

R149

R249

C 7781-5

200 OHM

R150

R250

A10266-2721

2.7K

R151

R251

A10266-1031

10K

R152

R252

A10266-1231

12K

R153

R253

C 5868-2

ZERO OHM

R154

R254

A10265-12131

121K 1%

R155

R255

A10266-1321

1.3K

R156

R256

A10266-1321

1.3K

R157

R257

A10266-1321

1.3K

R158

R258

A10266-9121

9.1K

R159

R259

A10266-1021

R160

R260

A10265-10021

10K 1%

R161

R261

A10266-4701

47 OHM

R162

R262

A10266-4701

47 OHM

R163

R263

A10265-12131

121K 1%

R164

R264

A10265-10021

10K 1%

R165

R265

A10265-12131

121K 1%

R166

R266

A10266-1851

1.8M

R167

R267

A10265-10011

1K 1%

R168

R268

A10265-95301

953 OHM

R170

R270

A10265-10011

1K 1%

R171

R271

A10265-95301

953 OHM

R173

R273

A10265-10021

10K 1%

R174

R274

A10265-24921

24.9K 1%

R175

R275

A10265-14721

14.7K 1%

R176

R276

A10265-24921

24.9K 1%

R177

R277

A10265-54921

54.9K 1%

R179

R279

A10266-1321

1.3K

R180

R280

A10266-4711

470 OHM

R181

R281

A10266-4721

4.7K

R182

R282

A10266-2201

22 OHM

R183

R283

A10266-2421

2.4K

R184

R284

A10266-4741

470K

R185

R285

A10266-2421

2.4K

R186

R286

A10266-2751

2.7M

R187

R287

A10266-3631

36K

Q42983-9 Main Module (D7911-7 board) Parts List Cont.

Содержание Micro-Tech MT-600

Страница 1: ...R AMPLIFIER SERVICE MANUAL K SVCMT6 8 95 Micro Tech ODEP and Crown are registered trademarks of Crown International Inc MailingAddress P O Box 1000 Elkhart IN U S A 46515 1000 ShippingAddress 57620 C...

Страница 2: ...SS GAIN SWITCH CAUTION AVIS WARNING TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE The information furnished in this manual does not include all of the details o...

Страница 3: ...Non Module 17 Module and Schematic Information 20 Fuse and Display Modules 21 Q42549 8 Output Module 22 Q42647 0 Output Module 23 Q42717 1 Output Module 24 Q42817 6 Output Module 25 Q42968 0 Output Mo...

Страница 4: ...sts Schematics are attached Note that com ponent parts with circuit board comprise a complete module Module part numbers are always associated with a specific circuit board although an unpopulated cir...

Страница 5: ...a four character number after the prefix letter the space is considered a character The seventh character is usually a hy phen though it may be a letter to indicate a revision or specialnote Thelastc...

Страница 6: ...hms unbalanced Output Impedance 10 milliohms in series with 2 microhenries Protection Systems Output Device Emulation Protec tion ODEP limits drive in the event of dangerous dynamicthermalconditionswi...

Страница 7: ...boards The following chart indicates which jumpers are used for different voltages Note that the fuses and transmotor may need to be changed to accommodate different voltages Versions with the voltage...

Страница 8: ...l and are of the rotary type Front panel indicators let the user know the status of the low voltage power supply enable and an ODEP indicator for each channel which shows the reserve energy status In...

Страница 9: ...ODEP transistors steal drive as dictated by the ODEP circuitry discussed later The control protec tion transistors act as switches to totally shunt audio to ground during the turn on delay or during a...

Страница 10: ...bias resistor is slightly greater in value so that PNP output devices run closer Theory Vcc Positive Rail Vcc Negative Rail Load speaker Input signal HIGH SIDE LOW SIDE Inverting Op amp Figure 2 Crown...

Страница 11: ...to the speaker load which is twice the voltage produced by the power supply Benefits include full utilization of the power supply it conducts current during both halves of the output signal convention...

Страница 12: ...PNP STAGE POSITIVE HIGH SIDE OUTPUT NPN STAGE HIGH SIDE BIAS SERVO LVA 1 LVA 1 VOLTAGE TRANSLATOR VOLTAGE TRANSLATOR OUTPUT DEVICE EMULATION PROTECTION ERROR AMP VGS BGS BALANCED INPUTS INVERTING BRI...

Страница 13: ...mVDC Initial Conditions Controls per standard heatsink tem perature less than 40 C Procedure Measure DC voltages on the output module across R02 adjust R26 if necessary Measure DC voltages on the out...

Страница 14: ...itial Conditions Controls per standard 8 ohm load on each channel Procedure Inject a 1 kHz sine wave and adjust for 1 Watt output 2 8 VAC Check input and output signals against each other input and ou...

Страница 15: ...miting wave form either channel controls limiting in Parallel Mono Mode Initial Conditions Controls per standard rag or other obstruction blocking fan so that it does not turn Procedure Load the ampli...

Страница 16: ...kHz portion to 25 With an IM analyzer measure less than 0 01 IMD Repeat test at 35 dB reference 34 7 Volt RMS 60 Hz portion and measure less than 0 05 IMD TEST 20 CLIPPING Spec No protective action d...

Страница 17: ...w for 50 60Hz power transformer 8 A10101 19 500OD x 195ID Fiber Washer 4 H42873 2 Transmotor 120V 60Hz Only 1 H43068 8 Transmotor 100V Units Only 1 H43407 8 Transmotor 120V 50Hz Only 1 H43061 3 Transm...

Страница 18: ...wer Cord European Version 1 A10214 7 Strain Relief 1 C 2823 0 Dual Binding Post 2 D 7600 6 Dual Banana Ground Strap 1 CHASSIS FRONT ASSEMBLY CPN ITEM QTY C 6487 0 Power Switch 2 Pole 22 Amp Rocker 1 D...

Страница 19: ...2 8 32 x 750 Taptite Pan Head Screw 2 A10192 1 500 Snap Bushing 4 A11376 6130J 13 inch Black Output Wire 1 A11376 6235J 23 inch Black Output Wire 1 A11394 6160E 16 inch Red Output Wire 1 A11394 6235E...

Страница 20: ...e Q42776 7 as service replacement Q42776 7 Main module on D 7251 8 board Used as a replace ment for all older modules Q42983 9 Main module on D 7911 7 board No longer available use Q43033 2 as service...

Страница 21: ...NSISTORS Q504 Q604 C 3625 8 2N4125 PNP IC S U502 C 5070 5 TL072CP Op Amp MISC U502X C 4508 5 16 Pin IC Socket Board D 8030 5 MT Display Bd M43534 3 FUSE MODULE CPN Item Qty C 5060 6 PC Mount Fuse Clip...

Страница 22: ...09 C 4479 9 22 R10 A10266 4711 470 R11 A10266 2R73 2 7 1W R12 A10266 2R73 2 7 1W R13 A10266 7501 75 R14 A10266 2R73 2 7 1W R16 C 6486 2 2 5W R17 C 6486 2 2 5W R19 C 6486 2 2 5W R20 C 6486 2 2 5W R21 C...

Страница 23: ...2 5W R09 C 7779 9 22 FP R10 A10266 4711 470 R11 A10266 2R73 2 7 1W R12 A10266 2R73 2 7 1W R13 A10266 7501 75 R14 A10266 2R73 2 7 1W R16 C 6486 2 2 5W R17 C 6486 2 2 5W R19 C 6486 2 2 5W R20 C 6486 2...

Страница 24: ...1W R12 A10266 1204 12 2W R13 A10266 7501 75 R14 A10266 1204 12 2W R15 C 6486 2 2 5W R16 C 6486 2 2 5W R17 C 6486 2 2 5W R18 C 6486 2 2 5W R19 C 6486 2 2 5W R20 C 6486 2 2 5W R21 C 7778 1 5 6 FP R22 C...

Страница 25: ...66 1204 12 2W R13 A10266 7501 75 R14 A10266 1204 12 2W R15 C 6486 2 2 5W R16 C 6486 2 2 5W R17 C 6486 2 2 5W R18 C 6486 2 2 5W R19 C 6486 2 2 5W R20 C 6486 2 2 5W R21 C 7778 1 5 6 FP R22 C 7779 9 22 F...

Страница 26: ...7 1W R12 A10266 1204 12 2W R13 A10266 7501 75 R14 A10266 1204 12 2W R15 C 6486 2 2 5W R16 C 6486 2 2 5W R17 C 6486 2 2 5W R18 C 6486 2 2 5W R19 C 6486 2 2 5W R20 C 6486 2 2 5W R21 C 7778 1 5 6 FP R22...

Страница 27: ...7 2W R12 A10266 1204 12 2W R13 A10266 7501 75 R14 A10266 1204 12 2W R15 C 6486 2 2 5W R16 C 6486 2 2 5W R17 C 6486 2 2 5W R18 C 6486 2 2 5W R19 C 6486 2 2 5W R20 C 6486 2 2 5W R21 C 7778 1 5 6 FP R22...

Страница 28: ...N4148 D112 D212 C 3181 2 1N4148 D113 D213 C 3181 2 1N4148 D114 D214 C 3181 2 1N4148 D115 D215 C 3181 2 1N4148 D120 D220 C 3181 2 1N4148 D121 D221 C 3181 2 1N4148 D122 D222 C 3181 2 1N4148 D123 D223 C...

Страница 29: ...6 1231 12K R154 R254 A10266 1011 100 OHM R156 R256 A10266 1321 1 3K R157 R257 A10266 1321 1 3K R158 R258 A10266 9121 9 1K R159 R259 A10266 1031 10K R161 R261 A10266 4701 47 OHM R162 R262 A10266 4701 4...

Страница 30: ...1 1 1N4004 D3 C 2851 1 1N4004 D4 C 2851 1 1N4004 D5 C 2851 1 1N4004 D6 C 2851 1 1N4004 D7 C 2851 1 1N4004 D104 D204 C 2851 1 1N4004 D105 D205 C 2851 1 1N4004 D106 D206 C 2851 1 1N4004 D107 D207 C 2851...

Страница 31: ...K R146 R246 A10266 1031 10K R147 R247 C 7781 5 200 OHM R148 R248 A10266 2721 2 7K R149 R249 C 7781 5 200 OHM R150 R250 A10266 2721 2 7K R151 R251 A10266 1031 10K R152 R252 A10266 1231 12K R153 R253 C...

Страница 32: ...250 OPEN C151 C251 OPEN C152 C252 C 6809 5 220pF C153 C253 C 6804 6 1 F DIODES D1 C 2851 1 1N4004 D2 C 2851 1 1N4004 D3 C 2851 1 1N4004 D4 C 2851 1 1N4004 D5 C 2851 1 1N4004 D6 C 2851 1 1N4004 D7 C 28...

Страница 33: ...227 A10266 6821 6 8K R128 R228 A10266 1031 10K R129 R229 A10266 1041 100K R130 R230 A10266 1041 100K R131 R231 A10266 1031 10K R132 R232 C 5062 2 100K Trim R133 R233 A10266 2741 270K R134 R234 A10266...

Страница 34: ...J9 C 7527 2 HDR 6 PIN J10 C 7592 6 HDR 4 PIN J11 C 7526 4 HDR 3 PIN J100 J200 C 6777 4 PH JACK J500 J800 D 6619 7 10 Ribbon J600 J700 D 6620 5 6 Ribbon MISC MOUNTS U1 U2 2 C 1889 2 6 32 NUT 2 C 2176...

Страница 35: ...F C 149 C249 C 6808 7 470pF C150 C250 C 6806 1 01 F C151 C251 C 6806 1 01 F C152 C252 C 6950 7 82pF C153 C253 C 6804 6 1 F C154 C254 C 8426 6 1 F 250V C155 C255 C 6804 6 1 F C156 C256 C 6804 6 1 F C15...

Страница 36: ...1031 10K R132 R232 C 5062 2 100K Trim R133 R233 A10266 2741 270K R134 R234 A10266 1832 18K 5W R135 R235 C 7782 3 100 OHM R136 R236 A10266 6821 6 8K R137 R237 C 7782 3 100 OHM R138 R238 A10266 6821 6 8...

Страница 37: ...10 OHM R916 R1016 A10266 1001 10 OHM SWITCHES S2 C 7325 1 DPDT SIDE S3 C 7960 5 DP3T S100 C 6781 6 6P3T INTEGRATED CIRCUITS U1 C 5095 2 MC7815 U2 C 5096 0 MC7915 U100 U200 C 6911 9 UPA75 PNP U101 U20...

Страница 38: ...1 F C151 C251 C 6806 1 01 F C152 C252 C 6950 7 82pF 5 C153 C253 C 8897 8 1 F C154 C254 C 8426 6 1 F 250V C155 C255 C 8897 8 1 F C156 C256 C 8897 8 1 F C157 C257 C 6806 1 01 F DIODES D1 C 2851 1 1N4004...

Страница 39: ...30 R230 A10266 1041 100K R131 R231 A10266 1031 10K R132 R232 C 5062 2 100K Pot ODEP R133 R233 A10266 2741 270K R134 R234 A10266 1832 18K 5W R135 R235 C 7782 3 100 Flame Proof R136 R236 A10266 6821 6 8...

Страница 40: ...R916 R1016 A10266 3901 39 R917 R1017 A10266 10021 10K R918 R1018 A10266 10021 10K R919 R1019 A10266 10021 10K R920 R1020 A10266 10021 10K R921 R1021 C 9079 2 200 Pot CMR Null SWITCHES S2 C 7325 1 Grou...

Страница 41: ...1 F C151 C251 C 6806 1 01 F C152 C252 C 6950 7 82pF 5 C153 C253 C 8897 8 1 F C154 C254 C 8426 6 1 F 250V C155 C255 C 8897 8 1 F C156 C256 C 8897 8 1 F C157 C257 C 6806 1 01 F DIODES D1 C 2851 1 1N4004...

Страница 42: ...30 R230 A10266 1041 100K R131 R231 A10266 1031 10K R132 R232 C 5062 2 100K Pot ODEP R133 R233 A10266 2741 270K R134 R234 A10266 1832 18K 5W R135 R235 C 7782 3 100 Flame Proof R136 R236 A10266 6821 6 8...

Страница 43: ...R916 R1016 A10266 3901 39 R917 R1017 A10266 10021 10K R918 R1018 A10266 10021 10K R919 R1019 A10266 10021 10K R920 R1020 A10266 10021 10K R921 R1021 C 9079 2 200 Pot CMR Null SWITCHES S2 C 7325 1 Grou...

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