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Micro-Tech 600 Amplifier Service Manual

CAPACITORS

C 3913-8

470µF

C 3913-8

470µF

C 6802-0

.47µF

C 6806-1

.01µF

C 6806-1

.01µF

C 6094-9

33µF

C 6806-1

.01µF

C100

C200

C 5311-3

22µF

C101

C201

C 2820-6

5pF

C103

C203

C 6805-3

.022µF

C104

C204

C 6804-6

.1µF

C105

C205

C 6812-9

47pF

C106

C206

C 6812-9

47pF

C108

C208

C 6814-5

12pF

C112

C212

C 6803-8

.12µF

C113

C213

C 6802-0

.47µF

C114

C214

C 8026-4

100µF 35V

C115

C215

C 8026-4

100µF 35V

C116

C216

C 6802-0

.47µF

C117

C217

C 6803-8

.12µF

C118

C218

C 6814-5

12pF

C122

C222

C 6811-1

100pF

C123

C223

C 6812-9

47pF

C124

C224

C 6812-9

47pF

C125

C225

C 8026-4

100µF 35V

C127

C227

C 8026-4

100µF 35V

C128

C228

C 7706-2

.1µF 100V

C129

C229

OPEN

C130

C230

C 6813-7

27pF

C133

C233

C 6814-5

12pF

C134

C234

C 6805-3

.022µF

C135

C235

C 6805-3

.022µF

C136

C236

C 6808-7

470pF

C137

C237

C 6808-7

470pF

C138

C238

C 6814-5

12pF

C139

C239

C 6814-5

12pF

C140

C240

C 6812-9

47pF

C141

C241

C 6812-9

47pF

C144

C244

C 8026-4

100µF 35V

C145

C245

C 6814-5

12pF

C146

C246

C 6809-5

220pF

C147

C247

C 6806-1

.01µF

C148

C248

C 6810-3

180pF

C 149 C249

C 6808-7

470pF

C150

C250

OPEN

C151

C251

OPEN

C152

C252

C 6809-5

220pF

C153

C253

C 6804-6

.1µF

DIODES

C 2851-1

1N4004

C 2851-1

1N4004

C 2851-1

1N4004

C 2851-1

1N4004

C 2851-1

1N4004

C 2851-1

1N4004

C 2851-1

1N4004

C 3181-2

1N4148

C 3549-0

1N916B

D104

D204

C 2851-1

1N4004

D105

D205

C 2851-1

1N4004

D106

D206

C 2851-1

1N4004

D107

D207

C 2851-1

1N4004

D108

D208

C 3181-2

1N4148

D109

D209

C 3181-2

1N4148

D110

D210

C 3181-2

1N4148

D111

D211

C 5061-4

1N3070

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 5061-4

1N3070

D124

D224

C 5061-4

1N3070

RESISTOR NETWORKS

N100

N200

D 4669-4

Bal. Input

N101

N201

D 6081-0

Res. Net-B

N102

N202

D 6082-8

Res. Net-C

TRANSISTORS

C 7458-0

2N4123

C 3625-8

2N4125

Q100 Q200

D 2961-7

2N3859A

Q101 Q201

C 3578-9

MPSA93

Q102 Q202

C 3810-6

MPSA43/42

Q103 Q203

C 3786-8

PN4250A

Q104 Q204

C 3625-8

2N4125

Q105 Q205

C 3578-9

MPSA93

Q106 Q206

C 3625-8

2N4125

Q107 Q207

C 3786-8

PN4250A

Q108 Q208

D 2961-7

2N3859A

Q109 Q209

D 2961-7

2N3859A

Q110 Q210

C 3810-6

MPSA43/42

Q111 Q211

D 2961-7

2N3859A

Q112 Q212

C 3625-8

2N4125

Q113 Q213

C 3625-8

2N4125

Q115 Q215

D 2962-5

MPS8097

Q42776-7 Main Module (D 7251-8 board) Parts List

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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