Module And Schematic Information - Crown Macro-Tech MA-2400 Service Manual

Module History
Since the introduction of the MA-2400 amplifier there
have been several updates and revisions. Some of
these changes called for new modules. The following
is a list of modules used up to this date, March 1996.
Output Modules: (left and right are identical)
Q42670-2
Original output module on P10233-8.
Q42887-2
Output module on P10315-3 board. No longer avail-
able. Use Q43065-4 as service replacement.
Q42985-4
Output module on P10337-7 board. No longer avail-
able. Use Q43358-3 as service replacement.
Q43194-2
Output module on P10396-3 board.
Q43358-3
Output module on P10433-4 board.
Main Modules:
Q42667-8
Main module on D 6978-7 board. No longer available.
Use Q42777-5 as service replacement.
Q42737-9
Main module on D 6978-7 board. No longer available.
Use Q42777-5 as service replacement.
Q42753-6
Main module on D 7150-2 board. No longer available.
Use Q42777-5 as service replacement.
Q42777-5
Main module on D 7251-8 board. Used as a replace-
ment for all older modules.
Q42982-1
Main module on D 7911-7 board. No longer available
use Q43257-7 as service replacement.
Q43037-3
Main module on D 7993-5 board. No longer available
use Q43257-7 as service replacement.
Q43132-2
Main module on D 8283-0 board.
Q43272-6
Main module on D 8283-0 board.
Q43257-7
Main module on D 8369-7 board.
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Macro-Tech 2400 Amplifier Service Manual

Module and Schematic Information

Fuse Module:
Q42742-9
Fuse module on P10202-3 Board.
M44161-4
Fuse module on P10387-2 board.
Display Module:
Q42742-9
Display module on D 6260C4 board.
Q42875-7
Display module on D 6260C4 board.
Q43442-5
Display module on D 8897-7 board.
Schematic Information
The schematics provided are representative only.
There may be slight variations between amplifier to
amplifier. These schematics are intended to be used
for troubleshooting purposes only.
For amplifiers with main boards D 6978-7, D 7150-2,
or D 7251-8 refer to schematic numbers J0342-6,
J0262-6, and display schematic J0242-8.
For amplifiers with main boards D 7605-5, or D 7911-
7 refer to schematic number J0449-9.
For amplifiers with main boards D 7993-5, or D 8283-
0 refer to schematic number J0531-4.
For amplifiers with a main board D 8369-7, refer to
schematic number J0625-4.