Schematics; Module And Schematic Information; General Information; Pwas - Crown K1 Service Manual

K Series Service Manual
8 Module and Schematic
Information

8.1 General Information

Since the introduction of the K Series amplifiers there
have been several updates and revisions. Many of
these changes called for new modules. The follow-
ing pages list all modules used as of the printing of
this manual.
When replacing an Output PWA, it is recommended
that you order a complete, pre-assembled Output As-
sembly, which includes the PWA, heatsink, matched
output inductors and other parts.
The Crown Parts Department stocks the most current
PWAs and Output Assemblies for each K Series
model, which will retrofit into all older units.
Parts lists and schematics for Main, Output, and In-
put PWAs are included begining with current produc-
tion PWAs as of Revision A of this manual. Call the
Crown Technical Support Group if you require a parts
list or schematic for a module not included in this
manual.
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 completed circuit board with all components
assembled. PWB stands for Printed Wire Board. This
is the circuit board only, without components.

8.2 PWAs

8.2.1 Main PWA:
100497-1
Main PWA built on 100496-1 PWB.
100497-2
Main PWA built on 100496-2 PWB. Replaced 100496-1.
100497-3
Main PWA built on 100496-3 PWB. Replaced 100496-2.
100497-4
Main PWA built on 100496-4 PWB. Replaced 100496-3.
100497-5
Main PWA built on 100496-5 PWB. Replaced 100496-4.

Module and Schematic Information 8-1

8.2.2 Input PWA:
102524-1
Input PWA built on 100523-1 PWB.
102524-2
Input PWA built on 100523-2 PWB. Replaced 100523-1.
102524-3
Input PWA built on 100523-5 PWB. Replaced 100523-2.
K1
101809-1
Input PWA built on 100523-5 PWB. Replaced 100523-3
with K1.
101809-2
Input PWA built on 100523-5 PWB. Replaced 101809-1.
101809-3
Input PWA built on 100523-7 PWB. Replaced 101809-2.
101809-4
Input PWA built on 100523-7 PWB. Replaced 101809-3.
K2
102524-4
Input PWA built on 100523-5 PWB. Replaced 100523-3
with K2.
102524-5
Input PWA built on 100523-7 PWB. Replaced 100523-4.
102524-6
Input PWA built on 100523-7 PWB. Replaced 100523-5.
8.2.3 Output PWA:
Note: When replacing an Output PWA, Crown recom-
mends that you order a complete, pre-assembled Out-
put Assembly, which includes the PWA, heatsink,
matched output inductors and other parts. CPNs for
Output Assemblies are given after Output PWA list-
ings below for K1 and K2..
K1
101795-1
Output PWA built on 100437-2 PWB.
102176-1
Output PWA built on 100437-2 PWB. Replaced 101795-1.
102176-2
Output PWA built on 100437-3 PWB. Replaced 102176-1.
102175-2
Complete Output Assembly. Replaces all earlier Output
Assemblies.
Rev. A
©1999 Crown International, Inc.