Crown Macro-Tech 5002VZ Instrukcja Obsługi Strona 13
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Voltage Conversion 3-1
130446-1 Rev. A
MA-5002VZ Service Manual
©2000 Crown International, Inc.
3 Voltage Conversion
INSTRUCTIONS
CAUTION: Because there is a risk of
electric shock, only a qualified technician
should change the line voltage configuration.
1. Turn the amplifier off and disconnect it from the AC
power source. (The enable switch alone does not re-
move lethal voltage from the line cord.) Wait at least 10
seconds before proceeding.
2. Drain any remaining energy from the power supplies
by shorting them as follows: Touch a 100 ohm, 10 watt
resistor across terminals A1 and A2 and across B1 and
B2 as shown in the illustration. The resistor should be
held across the terminals for 10 seconds. Be careful—
the resistor can become hot.
3. Locate the Control Board. It is the circuit board clos-
est to the front of the amplifier. It contains numerous
power supply connections which set the voltage and
one jumper block which sets the frequency.
4. Use the information in Figure 3.1 to connect the color-
coded wiring harness correctly for the desired voltage.
Configure each wire group one at a time so the wires
are not confused. Do not mix wires between groups.
This step may require you to cut one or more tie wraps.
If you do, replace them to make sure no loose wires are
able to prevent the fans from rotating.
5. Locate the frequency jumper (JP1) and set it for ei-
ther 60 Hz (left) or 50 Hz (right).
6. Locate the fan connector (P729/P730) and move it to
the appropriate voltage connector (left for 200-240 VAC
or right for 100-120 VAC).
7. Double check that all connections are correct and
replace the top cover.
The MA-5002VZ power amplifier may easily be con-
verted to a variety of AC mains voltages and may oper-
ate at 50 or 60 Hz. Complete directions to accomplish
line voltage and/or frequency changes are found on a
label under the top cover of the unit. For convenience
this information is duplicated here and on the following
page.
NO.**
P712
P711
P724B
P707
P704
P705
P710
P709
P708
P703
P701
P700
P702
P713
P714
P722
P749
P750
P718
P716
P721
P719
P715
P724A
P736
P735
P734
P742
P737
P744
P743
P738
P739
P745
P724C
P741
P740
P729***
P730***
100 V
BLK
WHT
BLU*
BLK/GRN
--NONE--
--NONE--
WHT/GRN
WHT/RED
WHT/YEL
BLK/YEL
GRY
GRY
GRN/YEL
BLK/YEL
WHT/YEL
BRN*
WHT/RED
WHT/GRN
--NONE--
--NONE--
BLK/GRN
BLK
WHT
BLU*
GRN/YEL
GRY
GRY
BLK/YEL
WHT/YEL
WHT/RED
WHT/GRN
--NONE--
--NONE--
BLK/GRN
BLU*
WHT
BLK
BLK
WHT
BLU*
BLK/YEL
--NONE--
--NONE--
WHT/YEL
WHT/RED
WHT/GRN
BLK/GRN
GRY
GRY
GRN/YEL
BLK/GRN
WHT/GRN
BRN*
WHT/RED
WHT/YEL
--NONE--
--NONE--
BLK/YEL
BLK
WHT
BLU*
GRN/YEL
GRY
GRY
BLK/GRN
WHT/GRN
WHT/RED
WHT/YEL
--NONE--
--NONE--
BLK/YEL
BLU*
WHT
BLK
BLK
--NONE--
BLU*
BLK/GRN
BLK/YEL
WHT
WHT/RED
WHT/GRN
WHT/YEL
--NONE--
GRY
GRY
GRN/YEL
--NONE--
WHT/YEL
BRN*
WHT/GRN
WHT/RED
WHT
BLK/YEL
BLK/GRN
BLK
--NONE--
BLU*
GRN/YEL
GRY
GRY
--NONE--
WHT/YEL
WHT/GRN
WHT/RED
WHT
BLK/YEL
BLK/GRN
BLU*
--NONE--
BLK
BLK
--NONE--
BLU*
BLK/GRN
BLK/YEL
WHT
WHT/YEL
WHT/GRN
WHT/RED
--NONE--
GRY
GRY
GRN/YEL
--NONE--
WHT/RED
BRN*
WHT/GRN
WHT/RED
WHT
BLK/YEL
BLK/GRN
BLK
--NONE--
BLU*
GRN/YEL
GRY
GRY
--NONE--
WHT/RED
WHT/GRN
WHT/YEL
WHT
BLK/YEL
BLK/GRN
BLU*
--NONE--
BLK
BLK
--NONE--
BLU*
BLK/YEL
WHT
BLK/GRN
WHT/YEL
WHT/GRN
WHT/RED
--NONE--
GRY
GRY
GRN/YEL
--NONE--
WHT/RED
BRN*
WHT/GRN
WHT/YEL
BLK/GRN
WHT
BLK/YEL
BLK
--NONE--
BLU*
GRN/YEL
GRY
GRY
--NONE--
WHT/RED
WHT/GRN
WHT/YEL
BLK/GRN
WHT
BLK/YEL
BLU*
--NONE--
BLK
BLK
--NONE--
BLU*
BLK/YEL
WHT
BLK/GRN
WHT/YEL
WHT/RED
WHT/GRN
--NONE--
GRY
GRY
GRN/YEL
--NONE--
WHT/GRN
BRN*
WHT/RED
WHT/YEL
BLK/GRN
WHT
BLK/YEL
BLK
--NONE--
BLU*
GRN/YEL
GRY
GRY
--NONE--
WHT/GRN
WHT/RED
WHT/YEL
BLK/GRN
WHT
BLK/YEL
BLU*
--NONE--
BLK
120 V 200 V 208 V 230 V 240 V
Control Board Wiring for Different AC Voltages
120 V Position 240 V Position
Figure 3.1 Voltage/Frequency Conversion Chart
* Wire colors marked with a single asterisk connect to the power cord.
** The connector numbers are listed in clockwise order from left to right
as you face the front of the amplifier.
*** Connection P729 and P730 are combined on a single four-pin connec-
tor. It mates to a “120V” connector for 100V or 120V operation or a
“240V” connector for 200, 208, 230 or 240 volts.
- SERVICE MANUAL 1
- Macro-Tech® 1
- Revision History 3
- Table of Contents 5
- 1 Introduction 7
- 1-2 Introduction 8
- 2 Specifications 9
- ±10 millivolts 10
- 2-4 Specifications 12
- 3 Voltage Conversion 13
- INSTRUCTIONS 13
- 3-2 Voltage Conversion 14
- 4 Circuit Theory 15
- 4-2 Circuit Theory 16
- 4.2.2 Output Stage Circuitry 17
- 4.3 VZ Power Supply 18
- 4.3.2 VZ Supply Circuitry 19
- 4.4 ODEP Theory 20
- On Main ModuleOff Main 21
- 4.5 Front End Theory 22
- 4.6 Protection Systems 23
- 4-10 Circuit Theory 24
- 4.6.2 Over-voltage 25
- 4.6.3 DC/LF 25
- 4.6.5 Output Thermal 26
- 4.6.6 Transformer Thermal 26
- 4.6.7 FET Thermal 26
- 4.7 Display 27
- 4.8 Mono Modes 27
- 4.8.2 Parallel Mono 28
- 5 Maintenance 29
- 5.3.2 LED Checks 30
- Maintenance 5-3 31
- 5.4 Test Procedures 32
- 5-6 Maintenance 34
- Maintenance 5-7 35
- Maintenance 5-9 37
- 5-10 Maintenance 38
- Figure 5.3 10-kHz Square Wave 38
- Maintenance 5-11 39
- ENABLECH2 40
- 5-14 Maintenance 42
- 6 Parts 43
- 6-2 Parts 44
- 7 Exploded View Parts 45
- 7-2 Exploded View Parts 46
- 7.1 Main Chassis Assembly 47
- 7-4 Exploded View Parts 48
- 7.2 Front Chassis Assembly 49
- 7-6 Exploded View Parts 50
- 7.3 Middle Chassis Assembly 51
- 7-8 Exploded View Parts 52
- 7.4 Rear Chassis Assembly 53
- 7-10 Exploded View Parts 54
- Exploded View Parts 7-11 55
- 7-12 Exploded View Parts 56
- 7.6 Transformer Assembly 57
- 7-14 Exploded View Parts 58
- Exploded View Parts 7-15 59
- 7-16 Exploded View Parts 60
- Exploded View Parts 7-17 61
- 7-18 Exploded View Parts 62
- Exploded View Parts 7-19 63
- 7-20 Exploded View Parts 64
- Exploded View Parts 7-21 65
- 7-22 Exploded View Parts 66
- Figure 7.12 Output Assembly 66
- 7.12 Output Assembly 67
- 7-24 Exploded View Parts 68
- Exploded View Parts 7-25 69
- 7-26 Exploded View Parts 70
- Interconnect Cables 71
- 7-28 Exploded View Parts 72
- 8 Module and Schematic 73
- Information 73
- 9 Module Parts 75
- 9-2 Module Parts 76
- Module Parts 9-3 77
- 9-4 Module Parts 78
- Module Parts 9-5 79
- 9-6 Module Parts 80
- Module Parts 9-7 81
- 9-8 Module Parts 82
- Module Parts 9-9 83
- 9-10 Module Parts 84
- Module Parts 9-11 85
- 9-12 Module Parts 86
- Module Parts 9-13 87
- 9-14 Module Parts 88
- Module Parts 9-15 89
- 9-16 Module Parts 90
- Module Parts 9-17 91
- 9-18 Module Parts 92
- Module Parts 9-19 93
- 9-20 Module Parts 94
- Module Parts 9-21 95
- 9-22 Module Parts 96
- Module Parts 9-23 97
- 9-24 Module Parts 98
- Module Parts 9-25 99
- MA-5002VZ Service Manual 100
- 9-26 Module Parts 100
- 130446-1 Rev. A 100
- Module Parts 9-27 101
- 9-28 Module Parts 102
- (Component Side) 103
- 125903-4 PWA Component Map 103
- 9-30 Module Parts 104
- Module Parts 9-31 105
- 9-32 Module Parts 106
- Module Parts 9-33 107
- 9-34 Module Parts 108
- Module Parts 9-35 109
- 9-36 Module Parts 110
- Module Parts 9-37 111
- 9-38 Module Parts 112
- 127488-2 PWA Component Map 113
- 9-40 Module Parts 114
- Module Parts 9-41 115
- 9-42 Module Parts 116
- Module Parts 9-43 117
- 9-44 Module Parts 118
- Module Parts 9-45 119
- 9-46 Module Parts 120
- Module Parts 9-47 121
- 9-48 Module Parts 122
- Q42929-2 PWA Component Map 123
- 9-50 Module Parts 124
- Q42934-2 Negative Emitter PWA 125
- 9-52 Module Parts 126
- Q42935-9 Positive Emitter PWA 127
- 9-54 Module Parts 128
- Module Parts 9-55 129
- 9-56 Module Parts 130
- Module Parts 9-57 131
- 9-58 Module Parts 132
- Module Parts 9-59 133
- 9-60 Module Parts 134
- Module Parts 9-61 135
- 9-62 Module Parts 136
- Module Parts 9-63 137
- 9-64 Module Parts 138
- 10 Schematics 139
- 10-2 Schematics 140
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