Crown Com-Tech CT-800 - Module and Schematic Information

Com-Tech 800 Amplifier Service Manual
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Module and Schematic Information
Module History
The Com Tech 800B amplifier was introduced in 1990.
Since then there have been several updates and
revisions, some of which called for new modules. The
following is a list of all modules used up to this date,
January 1996.
Output Modules: (left and right are identical)
Q42758-5
Original Output Module on P10233-8 or P10265-5
board.
Q42889-8
Output Module on P10315-3 board.
Q42973-0
Output Module on P10337-7 board. No longer avail-
able. Use Q43190-0 as service replacement.
Q43190-0
Output Module on P10396-3 board.
Main Modules:
Q42783-3
Original B Version Main Module on D 7222-9 board.
No longer available. Use Q43130-6 as a service
replacement.
Q42920-1
Main Module on D 7605-5 board. No longer available.
Use Q23130-6 as a service replacement.
Q43011-8
Main Module on D 7911-7 board. Use Q43130-6 as a
service replacement.
Q43042-3
Main Module on D 7993-5 board. No longer available.
Use Q43130-6 as service replacement.
Q43130-6
Main Module on D 8283-0 board.
Q43239-5
Main Module on D 8369-7 board. Detent Pots. Not
reverse compatible.
Control Module:
Q42751-0
CT-400/800 Control Module on P10317-9 board. No
longer available. Use Q43242-9 as service replace-
ment.
Q43214-8
CT-400/800 Control Module on P10404-5 board. No
longer available. Use Q43242-9 as service replace-
ment.
Q43242-9
CT Control Module on P10405-2 board.
Display Module:
Q42706-4
CT display on D 7083-5 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 the main board D 7605-5, or earilier
refer to schematic number J0481-2.
For amplifiers with main boards D 7911-7, D 7993-5,
or D 8283-0 refer to schematic number J0524-9.
For amplifiers with main board D 8369-7 refer to
schematic number J0632-0.