Problem seems to be that it cannot find the standard UNIX command manuals:
dcs1:root

/mnt1/aix/530/base)>man ls
dcs1:root

/mnt1/aix/530/base)>
but if I use a file from /usr/share/man/cat1 it works:
dcs1:root

/usr/share/man/cat1)>ls
agsysdb.1 emcpupgrade.1 i4cfg.1 lb_admin.1 powermt.1 sftp.1 utility.1
dping.1 extract.1 i4gdb.1 lb_find.1 powerprotect.1 ssh-add.1 uuid_gen.1
drm_admin.1 fortran i4glbcd.1 llbd.1 scopeux.1 ssh-agent.1 xlf
dsh.1 glance.1 i4lct.1 mgmtsvr.1 scp.1 ssh-keygen.1 xlf90
dshbak.1 glbd.1 i4llmd.1 midaemon.1 sdlcomp.1 ssh-keyscan.1 xlf95
dsilog.1 gpm.1 i4lmd.1 mwa.1 sdlexpt.1 ssh.1
emcpminor.1 i4act.1 i4target.1 ovtrap.1 sdlgendata.1 stcode.1
emcpreg.1 i4blt.1 i4tv.1 perfstat.1 sdlutil.1 ttd.1
dcs1:root

/usr/share/man/cat1)>man mwa
MWA(1) (11 October 2001) MWA(1)
NAME
mwa - Performance tool script for starting and stopping data
collection and alarms
SYNOPSIS
mwa [action] [subsystem] [parms] on HP-UX 9.x, HP-UX 10.x,
HP-UX 11.x, IBM AIX and NCR systems.
mwa [-dce|-ncs] [action] [subsystem] [parms] on SINIX, Sun
Solaris and DEC systems.
DESCRIPTION
mwa is a script that is used to start, stop, and re-
initialize MeasureWare Agent processes. On SINIX, Sun
Solaris and DEC systems, depending on which communication
protocol is installed and running, you can choose a protocol
selector (ncs or dce).
ACTION
-? List all mwa options. If your shell
interprets ? as a wildcard character, use an
invalid option such as -xxx instead of -?.
start Start all or part of MeasureWare Agent.