Lexicon Prime Time 93 - Unit Functions Only at Zero Delay Setting; Problems at Only One Delay Tap; Headroom Indicator Normal But No Audio; Headroom Indicator Acts Erratically

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WARNING
Do
not attempt to install or remove
modules with power applied to the
unit. This practice can damage the
electronics and can be hazardous to
you. Turn OFF power and remove power
cord prior to removing or installing
modules.
5.3 UNIT FUNCTIONS ONLY AT ZERO DELAY SETTING
If it is determined that the zero delay setting works but all higher delay
settings are malfunctioning, the memory module is suspect. Check for proper
installation of the memory card -- the connector pins should be fully engaged
and the nylon locking standoffs should be firmly in place.
5.4
PROBLEMS AT ONLY ONE DELAY TAP
This is a good indication that the difficulty is on the Analog board only.
Check for proper seating of the Analog board.
5.5
HEADROOM INDICATOR NORMAL BUT NO AUDIO
This is a good indication that all subsystems up to and including the Analog-
to-Digital converter are functioning properly.
5.6
HEADROOM INDICATOR ACTS ERRATICALLY
This problem often indicates problems with the control logic. It should be
noted that it is normal for all 5 Headroom LED
1
s to illuminate when the analog
module is not installed. Improper analog module installation can also cause
erratic headroom indicator operation.
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