Crown CE-1000A Service Manual page 79

Rev. D
7.3.2 Schematic Diagrams
Main PWA
For main PWA 127451-4 refer to schematic 127451-4.
7.4 CE-2000, UT-2020, M-240, S3
7.4.1 Main PWA:
102140-5
Main PWA built on 102138-5 PWB. Used only in early
CE-2000. Use 127452-4 as service replacement.
102140-6
Main PWA built on 102138-6 PWB. Replaced 102139-5.
Use 127452-4 as service replacement.
102140-8
Main PWA built on 102138-8 PWB. Replaced 102138-
6. First main PWA with sensitivity switch. Use 127452-4
as service replacement.
102140-9
Main PWA built on 102138-9 PWB. Added 0.775V sen-
sitivity. Used only in export models. Use 127452-4 as
service replacement.
102140-11
Main PWA built on 102138-9 PWB. Used only in export
models. Includes bootstrap update. Use 127452-4 as
service replacement.
127452-4
Special service replacement PWA. Used as replace-
ment for all PWA. Comes with other assortment of parts
which may need to be replaced in the amplifier depend-
ing on version of original main PWA. (refer to instruction
sheet shipped with PWA).
127354-1
Main PWA built on 102138-9 PWB. Added 0.775V sen-
sitivity. Use 127452-4 as service replacement.
127354-2
Main PWA built on 102138-9 PWB. Includes bootstrap
update. Use 127452-4 as service replacement.
7.4.2 Input Module:
102690
Original input PWA built on 102688 PWB. Included sen-
sitivity switch.
CE Series Service Manual
126883
Input PWA built on 127004 PWB. Used with main PWAs
starting with 102139-8. Sensitivity switch was removed,
and moved to the main PWA. Use 127049-1 as service
replacement, which is PWA 126883 with new faceplate.
7.4.3 Schematic Diagrams
Main PWA
For main PWAs 102140-5 or 102140-6 refer to schematic
102141 F.
For main PWA 102140-8 refer to schematic 102142 J.
For main PWA 102140-9 refer to schematic 102142 L.
For main PWA 127354-1 or 127354-2 refer to sche-
matic 102142 M.
Input PWA
For input PWA 102690 refer to schematic 102568.
For input PWA 126883 refer to schematic 127014.
7.5 CE-2000A
7.5.1 Main/Input PWA:
127452-4
Main/input PWA built on 127450-1 PWB.
7.5.2 Schematic Diagrams
Main/Input PWA
For main/input PWA 127452-4 refer to schematic
127452-4.
Module and Schematic Information 7-2