Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Modifying A Release 2.1 or Earlier Processor Key Mode
Page E-2
Figure E-1. Modifying the Processor for Key Mode
!
CAUTION:
Do not touch the HDR3 header on the processor board; the header is
exposed when the feature module is not installed in the processor. If the
HDR3 header is removed, system programming may be deleted and will
have to be restored.
IC45
IC44
IC27
1
1
Y1
CR4 CR3
CR2
CR1
HDR3
IC15
IC17 IC19
IC21
IC16 IC18 IC20
IC22
IC57
IC50 IC51
IC56
IC55
IC36
IC11
IC64
1
IC10
IC48
IC4
IC62
IC66
IC61
HDR4
IC7
Y2
HDR4
SHUNT
IC1
J21
HDR3
!
Do not touch
HDR3