Crown Macro-Tech MA-2402

Module and Schematic Information 8-1
130445-1 Rev. A
MA-2402 Service Manual
©2000 Crown International, Inc.
8.1 General Information
The schematics referenced and provided are repre-
sentative only. There may be slight variations between
amplifier to amplifier. These schematics are intended
to be used for troubleshooting purposes only.
Note on circuit board designations: Crown circuit boards
are referenced with a PWA and/or PWB part number.
PWA stands for Printed Wire Assembly. This is the com-
pleted circuit board with all components assembled.
PWB stands for Printed Wire Board. This is the circuit
board only, without components.
8.2 MA-2402 Modules
8.2.1 Cap/Rectifier PWA:
127100-2
Cap/Rectifier PWA on 127101-2 PWB.
8.2.2 Display PWA:
127177-2
Display PWA on 127176-2 PWB.
8.2.3 Main PWA:
127245-3
Main PWA on 125414-3 PWB.
8.2.4 Output PWA: (left and right are identical)
102774-1
Output PWA on 102770-1 PWB.
8.2.5 Relay PWA:
Ch 1
127476-1
Domestic Relay PWA on 127199-1 PWB.
127259-1
Export Relay PWA on 127199-1 PWB.
Ch 2
127477-1
Domestic Relay PWA on 127199-1 PWB.
127200-1
Export Relay PWA on 127199-1 PWB.
8.3 Schematic Diagrams:
8.3.1 Main PWA
127252
8.3.2 Display PWA
127175
8.3.3 Output PWA
102773
8.3.4 Cap/Rectifier PWA
127108
8.3.5 Relay PWA (Domestic)
127494
8.3.6 Relay/Voltage Select PWA (Export)
127198
8 Module and Schematic
Information