canvm aoRponzmloN Morn c-9 sERvlcE MANUAL
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i.0 IrmoDLXITloN:
This ltianual is designed to address twro primary areas of concern
encountered when a ltodel C-9 is bronght in for repair:
A. The manual Contains those critical test procedures and expected
results necessary to determine whether or not the unit is
functioning as intended by design.
8. The manual provides diagnostic methods for locating the offending
circuit elelrent(s} once a valid malfunction has been detected.
The Model C-9 is unusual from the service perspective because of the
highly critical, ]pret almost totally subjective, nature of its function.
Obvious problems such as grces distortion, hun, noise or lack of an output
signal are, of Course, easy to recognize and categorize as true
maLl functions. Unfortunately ( frcm the service person' s perspective ) , these
kinds of problens are relatively rare in the Model C-9. In fact, about
half of the units received at the factory repair center exhibit absolutely
no malfuntion whatscever i
This is because several essential elements necessary to achieve the
cptimm experience of Sonic Holography are external to the C-9 itself . A
cursory reading. of the C-9 Cmer's Manual reveals that the C-9 haLrdrare is
siltply one elerient of a total psychcracoustic system responsible for
providing the exciting, yet subtle and extrerrely subjective perception of
Sonic Hblography. Some C-9 armers have been prenature in assuming
fault with the unit vlhen problens with the Hologram Effect are perceived.
Mbre often than not, a thorangh reading of the C-9 0unerts Marmal and
conscientious adherence to its reearmendations will resolve most problems a
customer might have in achieving the ultimate experience Sonic Holography
can prcrfuce.
Since no piece of test equipment has been designed that is capable of
perceiving and quantifying Sonic Hblngraphy effects in terms of Volts,
Ohas, Axperes, decibels, percentages or Eiertz, the Carver Corporation has
develc]ped a series of sixple and straightfcrmrard test prcoedures which will
absolutely verify or deny the prqper operation and correct aligrment of the
critical Sonic Holngraphy processing circuitry. These verif ication
prcoedures reqLiire only crmmon items of test equipment found on any
professional audio test bench and a basic level of technical skill.
2.o IBERTIF¥IRE TFH pROErm:
Before beginning any bench \rork, identify the general category of the
custerrer's oatplaint and use the following outline to lot:ate the reported
problen, in terms of three categories, cat:h of which leads to a specif ic set
of tests designed to determine whether or rrot the C-9 is at fault and then,
if it is, to help locate the offending circuitry.
